Yorkville 3400 Users Manual

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2015-02-03

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3400

HIGH EFFICIENCY STEREO POWER AMPLIFIER

WORLD HEADQUARTERS
CANADA

U.S.A.

Yorkville Sound

Yorkville Sound Inc.

550 Granite Court
Pickering, Ontario
L1W-3Y8 CANADA

4625 Witmer Industrial Estate
Niagara Falls, New York
14305 USA

Voice: (905) 837-8481
Fax: (905) 837-8746

Voice: (716) 297-2920
Fax: (716) 297-3689

SERVICE MANUAL
Quality and Innovation Since 1963
Printed in Canada

Manual-Service-AP3400-00-1v6.pdf

IMPORTANT SAFETY INSTRUCTIONS
The exclamation point within an equilatereal
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance.

This lightning flash with arrowhead symbol,
within an equilateral triangle, is intended to alert
the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure
that may be of sufficient magnitude to constitute a risk of
electric shock to persons.

Le point d’exclamation à l’intérieur d’un triangle équilatéral
est prévu pour alerter l’utilisateur de la présence
d’instructions importantes dans la littérature accompagnant l’appareil en ce qui concerne l’opération et la
maintenance de cet appareil.

Ce symbole d’éclair avec tête de flèche dans un triangle
équilatéral est prévu pour alerter l’utilisateur de la présence
d’un « voltage dangereux » non-isolé à proximité de l’enceinte
du produit qui pourrait être d’ampleur suffisante pour présenter
un risque de choque électrique.
S2125A

M1012A “THE INPUT BOARD”

FOLLOW ALL INSTRUCTIONS
Instructions pertaining to a risk of fire,
electric shock, or injury to a person

SUIVEZ TOUTES LES INSTRUCTIONS
Instructions relatives au risque de feu,
choc électrique, ou blessures aux personnes

CAUTION: TO REDUCE THE RISK OF ELECTRIC

AVIS: AFIN DE REDUIRE LES RISQUE DE CHOC

SHOCK, DO NOT REMOVE COVER (OR BACK).

ELECTRIQUE, N’ENLEVEZ PAS LE COUVERT (OU LE
PANNEAU ARRIERE) NE CONTIENT AUCUNE PIECE

NO USER SERVICEABLE PARTS INSIDE.

REPARABLE PAR L’UTILISATEUR.

REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.

CONSULTEZ UN TECHNICIEN QUALIFIE
POUR L’ENTRETIENT

Read Instructions: The Owner’s Manual should be read and

understood before operation of your unit. Please, save these instructions for future reference and heed all warnings.
Clean only with dry cloth.

Packaging: Keep the box and packaging materials, in case the unit
needs to be returned for service.

Warning: To reduce the risk or fire or electric shock, do not expose

this apparatus to rain or moisture. Do not use this apparatus near water!

Warning: When using electric products, basic precautions should
always be followed, including the following:

Power Sources

Your unit should be connected to a power source only of the voltage specified in the
owners manual or as marked on the unit. This unit has a polarized plug. Do not use
with an extension cord or receptacle unless the plug can be fully inserted. Precautions should be taken so that the grounding scheme on the unit is not defeated.

Hazards

Do not place this product on an unstable cart, stand, tripod, bracket or table. The
product may fall, causing serious personal injury and serious damage to the product.
Use only with cart, stand, tripod, bracket, or table recommended by the manufacturer
or sold with the product. Follow the manufacturer’s instructions when installing the
product and use mounting accessories recommended by the manufacturer.
The apparatus should not be exposed to dripping or splashing water; no objects
filled with liquids should be placed on the apparatus.
Terminals marked with the “lightning bolt” are hazardous live; the external wiring
connected to these terminals require installation by an instructed person or the use of
ready made leads or cords.
Ensure that proper ventilation is provided around the appliance. Do not install near
any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
No naked flame sources, such as lighted candles, should be placed on the apparatus.

Power Cord

Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug
has two blades with one wider than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade or the third prong are provided for your safety. If the
provided plug does not fit into your outlet, consult an electrician for replacement of the
obsolete outlet. The AC supply cord should be routed so that it is unlikely that it will be
damaged. If the AC supply cord is damaged DO NOT OPERATE THE UNIT.
Unplug this apparatus during lightning storms or when unused for long periods of time.

Service

The unit should be serviced only by qualified service personnel.

AUDIOPRO AP-3400 SERVICE MANUAL

Veuillez Lire le Manuel: Il contient des informations qui devraient
êtres comprises avant l’opération de votre appareil. Conservez.
Gardez S.V.P. ces instructions pour consultations ultérieures et
observez tous les avertissements.
Nettoyez seulement avec le tissu sec.

The input board processes the audio signal from the input jacks to the voltage amplifier board, (M1011A).
Each channel consists of a balanced gain stage, defeatable bass boost filter, and a preemphasis filter network.
The balanced input, (XLR Jack) and unbalanced input (phone jack) are wired in parallel to the input of a balanced
operational amplifier, (U1). The gain of this stage is 1.6 (4dB) balanced and 1.6 (4dB) unbalanced. Resistors R1, R5
along with capacitors C1 and C2 form a radio interference elimination filter.
Switch S1 selects a flat or bass boosted frequency response. The bass boost filter provides a 20Hz high pass, high Q
filter response with a +4dB peak at 55Hz. The filter consists of a tee network on the input of U1A along with R9, R10,
R11, C5 and C6. The gain is 1 (0dB) in the passband, (above 100Hz).
Operational amplifier U3B is a high pass shelving filter with a +2dB shelf above 20KHz. This filter provides the preemphasis required to obtain a flat frequency response (to 20KHz) on the power amplifier output at full power.

Emballage: Conservez la boite au cas ou l’appareil devait être

M1011A "VOLTAGE AMPLIFIERS AND SYSTEM CONTROL"

Attention: Lors de l’utilisation de produits électrique, assurez-vous

This board contains:
• Voltage amplifiers to drive the current amplifiers on the M1002A boards.
• The front panel volume control circuitry.
• The EMS control system with its associated circuits: Pre clipping and line current sensing heater circuits.
• Clip and activity LED's. Driver circuitry for the amplifier disable relay (used during amplifier turn on, turn off,
thermal shutdown and current limiting).

retourner pour réparation.
Avertissement: Pour réduire le risque de feu ou la décharge
électrique, n'exposez pas cet appareil à la pluie ou à l'humidité.
N’utilisez pas cet appareil près de l’eau!
d’adhérer à des précautions de bases incluant celle qui suivent:

Alimentation

L’appareil ne doit être branché qu’à une source d’alimentation correspondant au
voltage spécifié dans le manuel ou tel qu’indiqué sur l’appareil. Cet appareil est
équipé d’une prise d’alimentation polarisée. Ne pas utiliser cet appareil avec un
cordon de raccordement à moins qu’il soit possible d’insérer complètement les trois
lames. Des précautions doivent êtres prises afin d’eviter que le système de mise à la
terre de l’appareil ne soit désengagé.

Risque

Ne pas placer cet appareil sur un chariot, un support, un trépied ou une table instables.
L’appareil pourrait tomber et blesser quelqu’un ou subir des dommages importants.
Utiliser seulement un chariot, un support, un trépied ou une table recommandés par le
fabricant ou vendus avec le produit. Suivre les instructions du fabricant pour installer
l’appareil et utiliser les accessoires recommandés par le fabricant.
Il convient de ne pas placer sur l’appareil de sources de flammes nues, telles que
des bougies allumées.
L’appeil ne doit pas être exposé à des égouttements d’eau ou des éclaboussures
et qu’aucun objet rempli de liquide tel que des vases ne doit être placé sur l’appareil.
Assurez que lappareil est fourni de la propre ventilation. Ne procédez pas à
l’installation près de source de chaleur tels que radiateurs, registre de chaleur, fours
ou autres appareils (incluant les amplificateurs) qui produisent de la chaleur.
Les dispositifs marqués d’une symbole “d’éclair” sont des parties dangereuses
au toucher et que les câblages extérieurs connectés à ces dispositifs de
connection extérieure doivent être effectivés par un opérateur formé ou en utilisant
des cordons déjà préparés.

Cordon d’Alimentation

Ne pas enlever le dispositif de sécurité sur la prise polarisée ou la prise avec tige de
mise à la masse du cordon d’alimentation. Une prise polarisée dispose de deux
lames dont une plus large que l’autre. Une prise avec tige de mise à la masse
dispose de deux lames en plus d’une troisième tige qui connecte à la masse. La
lame plus large ou la tige de mise à la masse est prévu pour votre sécurité. La prise
murale est désuète si elle n’est pas conçue pour accepter ce type de prise avec
dispositif de sécurité. Dans ce cas, contactez un électricien pour faire remplacer la
prise murale. Évitez d’endommager le cordon d’alimentation. N’UTILISEZ PAS
L’APPAREIL si le cordon d’alimentation est endommagé.

Circuit Explanation:
Refer to the schematic of M1011A as the sections of the circuit are explained.
The audio signal enters the board from M1012A through connector MS4. The two channels are marked "L" and "R"
for left and right. The signals are to be considered as differential sources and therefore are marked as L+, L-,R+ and
R-. Since the left channel has the same topology as the right channel we will only look at the left channel.
The signal ("L+") at the terminal block (MS4) passes through the front panel level control (P1) and the desired level
enters the inverting input of U1.
Op amp U1 is an inverting amplifier with a set gain of 2.40 (7.6dB). Built around U1 is a dual purpose circuit controlled
by a voltage divider consisting of R15, R16, R17, R18, R19, R20 and R21. The voltage divider sets two reference
levels, (HDRM & CLP). Reference voltage levels vary with the voltage levels on the +/-144VDC supply rails. As the
amplifier?s output is loaded, the supply rails voltage decreases and so do the reference levels.
Transistors Q1, Q3 the surrounding resistors provide a pre-clipping function that tracks the supply rails through the
HDRM voltage reference and clips the audio signal at approximately 11.2V pk. The clip LED indicator circuit is
connected through D1 and D2 to the output of U1, The bases of Q2 and Q4 are connected to the “CLP” reference
voltage, and when the peak output voltage of U1 (+/-Vp) is enough to forward bias the transistor junctions, Q2 or Q4
will trigger the clip led circuit (Q5), and illuminate the clip LED.
The audio signal on the output of U1 enters U3 through R43 and RV1. Under normal operating conditions the gain of
U3 is 1(0dB). The signal then passes through U2 to the voltage amplifier.

Débranchez cet appareil durant les orages ou si inutilisé pendant de longues périodes.

Service

Consultez un technicien qualifié pour l’entretien de votre appareil.
safety-4v5.eps • April 3/2007

1

VOLTAGE AMPLIFIER:
The voltage amplifier amplifies the audio signal?s voltage from 4.8 volts peak (at the output of U2) to approximently
97v peak which is required to drive the current amplifier board M1002A. M1002A provides the current required for the
97v peak signal to drive 1200 watts into 4 ohms out of the binding posts.
Before the circuit is described in detail here is a quick rundown on the signal?s path through the voltage amplifier
stage. Refer to the schematic of M1011A. Let's consider that a positive going AC signal is present @ test point 3. The
positive going signal will turn on the positive side of the voltage amplifier. The signal at test point 3 turns on Q12
(through R40, D14 and D13). The collector of Q12 pulls down on the base of Q14, turns this transistor on further and
allows a greater current to flow out of Q14?s collector. This increase in current passes through Q15 and it?s collector to
emitter voltage drop decreases. The collector of Q15 now being more positive in voltage turns the base of Q18 on
causing an increase in Q18?s collector current resulting in test point 5 going positive.
As the positive side of the amplifier was turning on the negative side would have been turning off. This is how test
point 5 was able to move positive following the input signal. The reverse would hold true if a negative going signal was
present on the input of the voltage amplifier.
CIRCUIT DESCRIPTION:
The voltage amplifier is a mirrored image with circuitry connected to the positive power supply rail being identical (but
opposite polarity) to the circuitry connected to the negative power supply rail.
For this reason we will look in detail at the positive side of the amplifier.
The audio signal enters the voltage amplifier at test point 3. The signal passes through R40, D14 and D13 to the base
of Q12. Diodes D13 and D14 set up the DC bias on Q12 to approximately 0.6 mA.
The first voltage gain stage consists of Q12 along with the resistor chain on its collector and the emitter resistor (R44).
Transistor Q12 drives the base of Q14 through the resistor chain. A DC current of approximately 6 mA should flow
through the collector of Q14. The voltage drop across Q14 remains constant and is derived from the voltage drop
across the voltage reference Q20, resistor R58, and the base/emitter junction of Q15. This total voltage should equal
approximately 3 VDC. Transistor Q14 is the second gain stage and its output current flows through Q15. Transistor
Q15 is a common base stage with the collector driving the base of output buffer Q18.

SHUTDOWN CIRCUIT:
The last circuit on board M1011A is the shutdown relay and its associated drive circuitry. The relay circuit has two
possible operating states.
1. Amplifier on under normal operating conditions.
2. Amplifier power switch has just been turned OFF/ON or the amplfier is in current limit protecting the amplifier?s
output or the amplifier has overheated.
CIRCUIT DESCRIPTION
Here is how the circuit accomplishes these functions. The relay?s normally closed contacts short the output of the
voltage amplifiers to ground when the power switch is off. When the power switch is turned on, the relay remains off
(normally closed) for about 6 seconds. C52 charges to 35V and results in Q37 turning off allowing Q36 to turn on. As
Q36 turns on, it connects the negative terminal of the relay?s coil (Pin 16) to ground energizing the relay and opening
the normally closed contacts.
If prolonged current limiting occurs on the amplifier?s output transistors then D50 or D51 (depending on which channel
is current limiting) will be forward biased turning on Q38 (from its off state). Now +144VDC appears on the collector of
Q38 and through R130 and R128 turn on Q37 therefore turning off Q36 by shorting its base emitter junction. Q36
turning off will turn the relay off and the normally closed contacts (off state) will short the outputs of the voltage
amplifiers to ground so as not to continuously stress the amplifier?s output transistors. A cycle now occurs. With the
voltage amplifiers now disabled there is no signal driving the output transistors (Q14 to Q28) on board M1002A.
The current limit circuit on M1002A turns off and D50 and/or D51 are not forward biased and Q38 turns off. Through
Q37 and Q36 the relay is turned back on and the voltage amplifiers are now active again, driving the output
transistors. If current limiting still occurs, then the same cycle will occur. If the cause of current limiting (low impedance
or short on the speaker output terminals) has been removed, then the amplifier will continue to operate normally.
The third operation that the relay provides is "overheat shutdown". If for some reason the fan cannot keep the
heatsinks in a safe operating temperature area then the fan control circuit (on board M1013A) will deliver through the
"kill" signal line a positive current to turn Q37 on and turn Q36 off to turn off the relay and disable the voltage
amplifiers. When the temperature of the amplifier has been cooled down by the fan, then the kill signal will disappear
and the relay circuit will turn on the relay to resume normal operation. Anytime the relay is in the "protect" mode (due
to the abnormal states) then contact pin 8 of the relay will illuminate LD5 (the protect LED on the front panel).
M1002A “CURRENT AMPLIFIER BOARD”

Diode D17 is a clamping diode that prevents the maximum peak of the audio signal from coming within 4V of the 144
VDC rail. This is to prevent the output current amplifier (board M1002A) from going into saturation during clipping and
therefore having storage delay problems.
Transistor Q18 buffers the high impedance present on the collector of Q15. The output of the buffer provides a low
output impedance at test point 5 and is current limited to 25mA through the clamping action of D19, D20 and D23.
The signal at TP-5 drives the current amp board M1002A.

The current amplifier board (M1002A) receives a high voltage audio signal from voltage amplifier board (M1011A) and
provides the current drive necessary to drive speaker cabinets.
The current amplifier is a two tier complimentary output driver design controlled by a complimentary mos-fet stage.
CIRCUIT DESCRIPTION - REFER TO THE SIMPLIFIED SCHEMATIC #1 ON THE FOLLOWING PAGE

DC offset on the amplifier?s output is corrected by operational amplifier U2. The DC offset forms a current through
R54, R14 and is blocked by C5 giving a DC offset correction gain of -1.
The activity L.E.D. function is a simple charge pump circuit with a transistor that redirects a constant current path
through the activity L.E.D.

2

3

QUIESCENT CONDITION:
This design is class A/B and therefore the output driver transistors must be forward biased to provide low crossover
distortion. In most class A/B designs, a diode chain or VBE multiplier is used to control the bias voltage and provide a
means of adjusting the bias. This design is different as there isn't a diode chain or VBE multiplier. For simplicity lets
consider only the positive side of the current amplifier, that is all parts between the positive power supply rails and the
audio signal output/input terminals. The negative side is the same as the positive, except for polarity changes.
To bias Q14, greater than 0.5V is needed from base to emitter, (or for simplicity from base to amplifier output). Points
A and B are at the same potential, so consider them to be connected. If this is true then 0.5V from test point 2 to the
amplifier output must appear across R12. There must be some way of developing this voltage across R12, and there
is using the mos-fet (Q5) driver along with local feedback.
Simplified schematic Fig. #1 shows the biasing circuit. The current needed to develop 0.5V across R12 comes from
the source of Q5. When the amplifier is first turned on the current source (Q3) turns on Q5 and current flows through
R12 developing a voltage. When this voltage approaches 0.5V Q1 turns on and robs current from the gate of Q5.
This causes Q5 to turn off until the reduced current flowing through Q5 maintains 0.5V across R12. Q1 will turn off
slightly causing Q5 to increase its source current. The circuit reaches a point of equilibrium with approximately 0.5V
across R12.
Because all output devices are not identical and base emitter voltages vary, some adjustment must be available to
slightly adjust the 0.5V across R12. This is accomplished with RT1. RT1 causes Q1 to turn on slightly more or less
resulting in Q5 turning on slightly more or less and therefore R12? s voltage will be slightly more or less than 0.5v. The
proper quiescent current adjustment is 4mV ( to be measured between test points 8 and 9).
THE SECOND TIER:
Refer to the simplified schematic Fig. #1 while reading the following text. One way of making an amplifier more
efficient is to vary the Power Supply Voltage on the collectors of the output transistors (Q14 & Q22). The lower the
voltage from collector to emitter, the lower the device dissipation. During quiescent conditions, there is 78VDC on the
collectors of output transistors Q14 and Q22. The peak AC voltage that can appear on the amplifier's output is
approximately 132V peak. How can an output transistor deliver a 132V peak when its collector is only at 78VDC? It
can if its collector is pulled up to 144VDC as the output signal's peak rises above 78VDC. (refer to Fig. #2). The
second tier voltage must remain above the amplifier's output voltage by amount Vm. Therefore the circuitry controlling
the second tier voltage must increase the tier voltage before the amplifier's output voltage reaches 78VDC. This
leading voltage is necessary to compensate for time lag of the second tier circuit during fast rising amplifier output
signals.

4

5

The voltage between the
amplifier?s output and test point
4 is approximately 14.7VDC
derived from the voltage drop
across ZD3 @ ZD4. We call this
voltage the “floating battery”
because it floats on top of the
output audio signal with point 4
always being 14.7VDC greater
than the peak of the output
signal. Point 4 drives the gate of
mos-fet Q11. Q11 controls the
transistors of the upper tier. As
Q11 turns on it's source foward
biases the base of Q13 and Q13
pulls the collector of Q14
towards the 144 volt rail. The
gate to source voltage needed to
turn on Q11 is approximately 3.5
volts. When the peak output
signal is about 67vp (55v-(14.7v3.5v)) then Q11 will start to turn on the second tier. The second tier voltage will remain about 11 volts (Vm) above the
peak of the output signal to the point of clipping where this voltage is reduced to about 4 volts. Zener ZD8 protects the
gate source junction of Q11 and also provides a current path through R29 for the “floating battery”.

DC Protection
If a DC voltage greater than 8 volts appears on the output of the amplifier for more than 200 milliseconds then triac
Q30 will turn on holding the output at ground potential. MBS4992 is a device that turns on at either + or - 8 volts DC.

Current Limit Protection Circuitry
To have an amplifier drive 3000 watts into practically any combination of speaker cabinets and know what is a safe
load and what is not is a very difficult task. An extensive amount of time was spent on the current limit circuitry so that
it may simulate the safe operating area of the output transistors (SOAR curve). No matter how reactive the load may
be the phase shift that it presents, along with it's resistive component is used to set the output current limit of the
output transistor stage.
Refer to the schematic of board M1002A while reading the following text. The current limit circuitry is a mirrored image
with circuitry connected to the positive power supply rail being identical (but opposite polarity) to the circuitry
connected to the negative power supply rail. For this reason we will look at the positive side of the circuitry.
Transistor Q9 measures the peak current flowing through resistor R53. The voltage across R53 (as a result of the
current flowing through it) is scaled down by R55, R35, R36, R37, D7 and D11- these parts make up the safe
operating area along with the time constants of C26, R34, C12 and R26. Fig. #3 shows a waveform of the current that
passes through R52 and R53 when the output of the amplifier is shorted to ground. This can only be seen by using an
oscilloscope to measure differentially across R52 and R53. The conditions of the measurement are contained on the
diagram. During current limit when Q9 turns on it reduces the voltage across R42. R42 is in series with a 16 volt zener
(ZD7) and is also in parallel with the junction of Q8. Q8 is normally saturated by the current that flows through R20,
ZD7, R42, and R22. When Q9 reduces the voltage across ZD9 and R42 to below 16.6 volts then Q8 turns off allowing
a charge to build up on C8 through resistors R24 and R25. If current limiting occurs for a long enough duration to
allow C8 to charge to 1.2 volts then Q7 will turn on tripping the relay circuit on board M1011A. As soon as the relay is
turned off the audio signal will be turned off at the voltage amplifiers and will remain off for about 5 seconds before the
relay turns on and allows the audio signal to pass through the amplifier. If a current limit condition is still present then
the whole cycle will occur again and repeat until the load conditions on the amplifier's output are safe for the amplifier.
When a safe load reappears the amplifier will automatically reset and drive that load (the speaker cabinet).
Subwoofers present large inductive loads to the amplifier and are driven at low frequencies where the large current
peaks must be tolerated for short periods of time. To accomodate this type of loading C26 and R34 are used to retard
the firing of Q9 at low frequencies.

6

NOTE: Everytime you replace blown output transistors on a M1002A board
test the DC protection triac with the following circuit.
Conditions of test:
A. Pass a 100Hz 25v peak signal through the M1002A board under test with no load connected to the amplifier
output.
B. Connect points 1 and 2 as shown in the diagram. The amplifier should go into protect mode as the triac ( if
working) shorted the output of the amplifier to ground, and the amplifier goes into current limit.
C. Disconnect the triac test circuit and allow the amplifier to complete it?s protect cycle.
D. Reverse connections 1 to 2 and 2 to 1 and test again. The same results as in B) should be observed if the triac is
working.
Only test the triac for one protect cycle as prolonged testing will heat the triac to a high temperature.

7

EMS Circuit
Identifying Defective Boards in the AP-3400
The Energy Management System circuit only applies to North American line voltage products. A North American AC
receptacle can provide 1850 watts before the wall breaker would trip, but how can a amplifier provide 2 x 1200 watts
out when only 1850 watts is avaliable out of the AC receptacle? A sinewave source connected to the amplifier driving
the amplfier to full power output will cause the circuit breaker on the amplifier to trip. Music driving the amplfier to
clipping can be equal an average power output between 12 and 30 percent of the amplifier?s maximum capable power
output. Under this condition less than 12 ampheres of current is drawn from the AC line. Some synthesized music
may go beyond the 12 to 30 percent level and make the amplfier draw more than 12 amperes from the AC line. If this
occurs the coil on board M1013A heats up to the point where through the heating of thermistor RV5, Q32 sinks
current through R109. On board M1011A Q11 starts conducting through the connection to R109. Q11 heats
thermistors RV2 and RV4 attenuating the audio signal going to each amplfier channel, thus decreasing the current
drawn from the AC line to the point where less than 12 ampheres is being drawn.

STEP 1: VISUAL INSPECTION OF FRONT PANEL AND FAN
A. Check to see whether the green power LED is lit. If not, the amplifier has a power supply (M1013A board),
transformer, A.C. switch or line cord problem.
B. If the red protect LED stays on or samples off and on, this usually indicates a problem with one or both of the
M1002A current amplifier modules and possibly damage to the M1011A voltage amplifier board. Check for
misaligned pin connections or see if the ribbon cables have been cut or pinched through their insulation.
C. The fan running at full speed on power up usually indicates a problem with the fan circuitry on the M1013A board,
but it can also be caused by M1011A circuit problems. Erractic fan behaviour can be caused by damaged
thermistors located under the M1002A heatsinks.
D. No output on either or both channels can be caused by intermittent push switches at the input.

Fan Circuit
STEP 2: VISUAL INSPECTION OF INTERNAL CHASSIS
Looking at the schematic to
board M1013A, here is a quick
explaination of the fan control
circuit. There is a thermistor on
each M1002A board. When the
amplifier is first turned on, Q33
is saturated sinking the current
source through ZD10. As either
negative temperature coefficient
thermistor begins to heat up,
more current flows through D38
or D39 decreasing the conductor
of Q33 until the increasing VCE
of Q33 is enough to turn on Q34
and Q35. Further heating of the
thermistor causes an increasing
of Q33?s collector to emitter
voltage. Q34 and Q35 are a
common emitter stage with Q35
providing the drive current for the fan. To lower the dissipation of Q35, D42, D43, ZD12, ZD13 and R118 turn off Q35
when the full wave rectified voltage present of the collector of Q35 reaches approximently 50V by robbing current from
the base of Q34. The maximum fan voltage is 20.5 VDC. ZD14 and R120, R121 and R122 provide a current limiting
function. Figure #4 shows the current throught these resistors when there is 12VDC across the fan.

A. a) After removing the lid, look for any signs of smoke, charring or burnt components. If the M1002A boards have
such damage there may be some damage to the M1011A voltage amp board in the form of blown ICs, or possibly
open or shorted diodes, LED?s, resistors, transistors or capacitors. Exploded electrolytic capacitors indicate you
have major repairs to the M1002A, M1011A and M1013A boards.

Thermal Shutdown Circuit
Test point 7 in the fan circuit is the measuring point for the shutdown voltage. As the temperature sensing thermistors that
control the fan circuit heat up the voltage on test point 7 rises until at 85 degrees celcius on the M1002A heatsinks the
voltage on test point 7 reaches 34.5 VDC and the amplifier must be shutdown to protect the output power transistors. ZD15
and D47 become forward biased and through the kill connection to board M1011A, Q37 on M1011A turns on turning the
relay off and muting the audio signal. After the amplifier cools down the kill voltage will decrease FIGURE #4 AP3400 Fan
Current Waveform until Q37 turns off turning the relay back on enabling the amplifier.

8

9

STEP 3: POWER UP PROCEDURE WITHOUT M1002A BOARDS

It is extremely important that you never power up an AP3400 with the interconnecting cablesbetween the circuit
boards not connected.
Time and possible further damage will be reduced if you test M1011A and M1002A boards separately. To do this you
must use the M1011A and M1002A test connecters. These are shown in figures #5 and #6. These can be made if the
Molex connector parts are available or order them from the Yorkville Service Parts Dept. With the test connectors
connected to every board, slowly variac up the line AC voltage.

NOTE: It may be simplier to remove the power supply connections to M1002A boards not being troubleshooted to
reduce the possibility of further damage. With the M1011A test connector connected, a sinewave can be passed
through the board and be seen on test points 5 and 6. With the M1002 Atest connector installed, static DC
measurements can be made. A slight DC offset may be present on the board?s output as there will not be any DC
correcting feedback.
STEP 4: DISMANTLING AND REASSEMBLY PRECAUTIONS

SPECIFICATIONS
POWER
•
•
•

All values are in WATTS at 1KHz, except FTC 20Hz-20KHz.
Measurements made with regulated 120 VAC sine wave at line cord.
All values are rounded down to the nearest 25 watts

BURST AVERAGE
Measured as a 2 cycle burst at 1KHz, 8:1 duty. (Continuous measurements may require line currents >15 Amps).

ONE CHANNEL DRIVEN (WATTS).
LOAD
8ohms900
4ohms1500

1250
2250

CONT. AVG.
3000
6000

BURST AVG.

PEAK INSTANT

FTC 20-20KHz

BURST AVG.

PEAK INSTANT

FTC 20-20KHz

BURST AVG.

PEAK INSTANT

FTC 20-20KHz

800
1200

BOTH CHANNELS DRIVEN (WATTS).
LOAD
8ohms750
4ohms1200

1200
2175

CONT. AVG.
3000
6000

650
950

2400
4350

CONT. AVG.
6000
12000

1300
1900

BRIDGED (WATTS)
A. When removing power supply wires or resoldering wires to eyelets on the M1011A board, double check that there
are no solder bridges or icicles bridging traces or other eyelets. Failure to do so will result in the destruction of
newly installed boards as well as other boards in the unit. Also make sure wire color codes are correctly oriented
in their proper eyelets, and be careful that ribbon cables don?t get pinched or cut under the M1011A board.
B. When reinstalling M1002A boards, make sure the output wires, i.e. the red and yellow signal and black ground
wires, are not reversed. If either or both channels are reversed, the amp will stay in protect mode with the red
protect LED staying on or sampling on and off.

LOAD
16ohms1500
8ohms2400

THD DISTORTION
LOAD
8 ohms
4 ohms

AT 1KHz
<0.003 %
<0.004%

20Hz - 20KHz
<0.04 %
<0.05 %

CROSSTALK:
INPUT IMPEDANCE:
INPUT SENSITIVITY:
FREQUENCY RESPONSE:
HUM AND NOISE:
DC OFFSET:
PROTECTION:
COOLING:
SLEW RATE:
DAMPING FACTOR:
MAX OUTPUT CURRENT:
TURN ON/OFF:
EFFICIENCY:
WEIGHT:
SIZE:
POWER SUPPLY:
POWER COMSUMPTION:

10

-75 dB below full power at 1KHz
-60 dB below full power, 20Hz - 20KHz
20K ohms balanced, 10 Kohms unbalanced
1.4 VRMS sine wave = full power (36 dB gain).
Within 1dB, 20Hz to 20KHz (50Hz boost sw out)
-105 dB below max output RMS voltage, unweighted
less than 25 millivolts
fully protected, DC, LOAD and THERMAL
interleaved heatsink with DC servo controlled fan
Power amp: 30 V/usec, 60 V/usec in bridged mode
(rise time limited to 18 V/usec by input filter).
>500, 20Hz - 400Hz, into 8 ohms
100 amperes for 10 milliseconds, 50 amperes continuous
< 15 milliwatts / seconds, 0.5 Wpk (1s on delay).
Better than 75% at full power into 4 ohms
42 pounds 17.75 Kilograms
3.5" x 19" x 15.75" (front panel to binding posts)
Toroidal transformer and combination
power switch/circuit breaker
Will not exceed 13.5 Amps under actual conditions

11

AP3400 Parts List 10/28/98

Identifying Defective Boards in the AP-3000 & AP-3400
Please note:

All boards used in the AP-3400 are designated with an `A' suffix (e.g. M1002A) and
use bright red solder mask

STEP 1: VISUAL INSPECTION OF FRONT PANEL AND FAN
a) Check to see whether the green power LED is lit. If not, the amplifier has a power supply (M1013
board), transformer, A.C. switch or line cord problem.
b) If the red protect LED stays on or samples off and on, this usually indicates a problem with one or both
of the M1002 current amplifier modules and possibly damage to the M1012 voltage amplifier board.
Note: Any of the Molex cables from the M1011 circuit board to the M1012 input board as well as the
M1002 current amplifiers can cause the protect LED to stay on or sample on and off. Check for
misaligned pin connections or see if the ribbon cables have been cut or pinched through their insulation.
c) The fan running at full speed on power up usually indicates a problem with the fan circuitry on the
M1013 board, but it can also be caused by M1011 circuit problems. Erratic fan behaviour can be caused
by damaged thermistors located under the M1002 heat sinks.
d) No output on either or both channels can be caused by intermittent push switches at the input.
STEP 2: VISUAL INSPECTION OF INTERNAL CHASSIS
a) After removing the lid, look for any signs of smoke, charring or burnt components. If the M1002
boards have such damage, the M1011, M1012 and M1013 boards may also be damaged even if there is
no similar charring on their components. At the least, there will be some damage to the M1011 voltage
amp board in the form of blown ICs, or possibly open or shorted diodes, LEDs, resistors, transistors or
capacitors. Exploded electrolytic capacitors indicate you have major repairs to the M1002, M1011 and
M1013 boards.
STEP 3: POWER UP PROCEDURE WITHOUT M1002 BOARDS
It is extremely important that you never power up an AP-3000 or AP-3400 without following the
procedure located on the M1011 schematic highlighted within the box drawn in dashed lines. Failure to do
so will possibly result in damaging a good board. This procedure should only be done on a no load
scoped output to insure the rest of the circuit boards are working before installing new or repaired M1011
modules. The output of a fully operational M1011 will give a 70V peak to peak sinusoidal (undistorted)
wave form when a patch plug is attached at Pin #1. If the wave form is distorted or non- existent, or there
is DC offset, do not attempt to connect any M1002 module to the M1011 or you will immediately destroy
the new or repaired M1002 and will also cause more damage to the rest of the amplifier.
Note: M1002?spower supply wires (red, yellow, white, blue and black) must be removed as well as the
input Molex ribbon to the M1002 when attempting to power up an M1011.
STEP 4: DISMANTLING AND REASSEMBLY PRECAUTIONS
a) When removing power supply wires or resoldering wires to eyelets on the M1011 board, double check
that there are no solder bridges or icicles bridging traces or other eyelets. Failure to do so will result in the
destruction of newly installed boards as well as other boards in the unit. Also make sure wire color codes
are correctly oriented in their proper eyelets, and be careful that ribbon cables don?t get pinched or cut
under the M1011 boards as this will result in shut down into the protect mode or even destruction of more
boards.
b) When reinstalling M1002 boards, make sure the output wires, i.e. the red and yellow signal and black
ground wires, are not reversed. If either channels or both are reversed, the amp will stay in protect mode
with the red LED staying on or sampling on and off.

YS #
6410
6411
6419
6425
6438
6825
6934
6439
6440
6459
6461
6450
6822
6824
6432
6465
6433
5101
5102
5103
5107
5113
5114
6854
5105
5106
5123
6456
6873
6874
6891
6893
6779
6911
6912
6752
6923
6924
6925
6900
6927
6840
6884
5190
6444
6477
5401
5404
5408
5410
5412
5201
5416
5816
5422
5273
5427
6451
5272
5204
5834
5210
6435
5224
5226
5228
5314
5229
5882
5234
5255
5257
5259
5281
5629
5260
5627
5267
5619
5630

Description
GREEN 3MM LED 1V7 5MA BULK BRT CLR
RED 3MM LED 1V9 5MA BULK BRIGHT
BRIDGE 35A 400V WIRE LEAD GI3504
BAV21 200V 0A25 DIODE T&R
1N4004 400V 1A0 DIODE T&R
1N4148 75V 0A45 DIODE T&R
MR854 400V 3A0 DIODE FAST RECOV
1N5225B
3V0 0W5 ZENER 5% T&R
1N750ARL 4V7 0W5 ZENER 5% T&R
1N4732A
4V7 1W0 ZENER 5% T&R
1N5240BRL 10V0 0W5 ZENER 5% T&R
1N5242B 12V0 0W5 ZENER 5% T&R
1N4745A 16V0 1W0 ZENER 5% T&R
1N5246B 16V0 0W5 ZENER 5% T&R
1N5248B 18V0 0W5 ZENER 5% T&R
1N5250B 20V0 0W5 ZENER 5% T&R
1N5257B 33V0 0W5 ZENER 5% T&R
BC550C
TO92 NPN TRANS. T&R
BC560C
TO92 PNP TRANS. T&R
MPSA06
TO92 NPN TRANS. T&R
2N5551
TO92 NPN TRANS. T&R
MPSA42
TO92 NPN TRANS T&R
MPSA92
TO92 PNP TRANS T&R
2N6517
TO92 NPN TRANS.
MPSA13
TO92 NPN DARLINGTONT&R
MPSA63
TO92 PNP DARLINGTONT&R
NJM431L TO92 SHUNT REG T&R2V
BF872
TO202 PNP TRANS.
MJE340
TO126 NPN TRANS
MJE350
TO126 PNP TRANS.
TIP50 TO220 NPN TRANS
MJE5730 TO220 PNP TRANS
MJH11018 TO218 NPN DARLINGTON
BDX54C
TO220 PNP DARLINGTON
BDX53C
TO220 NPN DARLINGTON
MTP10N15L TO220 N CHAN MOSFET
MTP2P50E TO220 P CHAN MOSFET
MTW10N40E TO247 N CHAN MOSFET
MTP8P20
O220 P CHAN MOSFET
YS6900 (22) TO3 NPN TRANS.
YS6927 (23) TO3 PNP TRANS.
MC33078P IC DUAL OP AMP
NE5532N IC DUAL OP AMP
MBS4992 TO92 8V5 DIAC T&R
MAC224-4 TO220 40A TRIAC 200V
100K 5% 1/4W THERMISTOR T&R 0.2
_10P 500V 5%CAP T&R RAD CER.2"NPO
_27P 100V 10%CAP T&R TUBULAR NPO
_47P 100V 10%CAP T&R BEAD
NPO
100P 100V 10%CAP T&R BEAD
NPO
220P 100V 10%CAP T&R BEAD
NPO
470P 100V 5%CAP T&R RAD CER.2"NPO
470P 50V 10%CAP T&R BEAD
NPO
680P 100V 5%CAP T&R RAD CER.2"NPO
__1N 50V 10%CAP T&R BEAD
NPO
__1N5 200V 5%CAP T&R RAD CER.2"NPO
__2N2 500V 10%CAP T&R RAD CER.2" YB
__4N7 250V 20%CAP AC Y ONLY RAD10MM
__6N8 100V 5%CAP T&R RADIAL.2"FILM
_10N 100V 10%CAP T&R RADIAL.2"FILM
_10N 250V 20%CAP RAD POLYFILM BULK
_22N 100V 10%CAP T&R RADIAL.2"FILM
_22N 275V 20%CAP AC X2 RAD BLK15MM
_47N 100V 10%CAP T&R RADIAL.2"FILM
_68N 100V 5%CAP T&R RADIAL.2"FILM
100N 100V 5%CAP T&R RADIAL.2"FILM
100N 50V 10%CAP T&R BEAD
X7R
150N 63V 10%CAP T&R RADIAL.2"FILM
220N 250V 10%CAP RAD POLYFILM BULK
470N 63V 10%CAP T&R RADIAL.2"FILM
__1U 63V 20%CAP T&R RADIAL ELE.2"
__2U2 63V 20%CAP T&R RADIAL ELE.2"
__4U7 63V 20%CAP T&R RADIAL ELE.2"
_10U 16V 20%CAP NONPOLAR T&R .2"
_10U 160V 20%CAP RADIAL ELECT BULK
_22U 50V 20%CAP T&R RADIAL ELE.2"
_47U 10V 20%CAP NONPOLAR RAD BULK
100U 25V 20%CAP T&R RADIAL ELE.2"
330U 100V 20%CAP RADIAL ELECT BULK
330U 25V 20%CAP RADIAL ELECT BULK

Qty.
3
3
2
6
10
71
24
4
5
2
1
4
4
4
2
4
3
19
10
1
5
4
5
2
1
3
4
1
2
2
2
2
1
1
1
2
4
2
2
16
16
5
1
2
2
8
4
2
4
4
2
2
6
2
2
2
4
1
2
2
2
11
2
2
2
4
9
2
6
2
2
4
5
6
4
12
2
2
4
6

YS #
5621
5892
4522
4400
3590
3822
3820
3464
3465
3486
3489
3490
3682
3447
3498
3660
3451
3542
3630
3860
3692
3893
3894
3501
3750
3789
3806
8682
8498
8499
3795
3468
3821
3521
3541
3543
3593
8701
8793
8760
8800
8854
8787
8797
3797
3815
3846
4597
4599
5299
4745
4749
4974
4677
4877
4973
4688
4911
4748
4733
4610
4875
4592
4591
4607
4899
4817
6134
4811
4593
4859
4645
4857
4770
4867
4855
4821
4822
4609
4823

Description
Qty.
470U 63V 20%CAP RADIAL ELECT BULK
1
6800U 80V 10%CAP RADIAL ELECT BULK
8
4K7 TRIM POT
2
_10K 25A-AUD/DETENT STYLE"P15"16MM
2
12.0 AMP SWITCH BREAKER WHITE
1
500NH COIL 18AWG 0R000 AIR CORE
1
4UH COIL 14AWG ZOBEL HORIZONTAL
2
WIRE TO BOARD CRIMP 18-24 AWGT/LEAD
2
WIRE TO BOARD CRIMP 16-18 AWG TIN
4
CLIP 250X032 22-18AWG DISCO-LOK
14
CLIP 250X032 18-22AWG DISCO/INSL
2
CLIP 250X032 14-16AWG DISCO/INSL
1
250 MALE PCB TAB BULK ON CATRIGE
14
DUAL BINDING POST TPP3
2
M203-02 PLAIN PC MNT JK SKT
2
FEMALE PC MOUNT XLR NTRX.NC3FPR-H-O
2
0.089 OD SMALL EYELET ELECTROPLATED
18
SE44 LARGE EYELET TIN-PLATED BRASS
23
FAN GUARD METAL 80MM CHROME
1
FAN 80MM X 80MM 40CFM 12VDC
1
HEATSINK THERMALOY 6079-PB
5
AAVID HEATSINK 5811B
2
AAVID 5972-B H/S W/TAB B.O.
4
B52200F006 COMP WASH #4 SMALL
13
VINYL CAP SC 0.500 BLACK 1/2"
1
TERMINAL STRIP (BEAU INTERCONNECT)
1
RECTANGULAR WASHER FOR TRANS SUPPRT 1
#4 TEFLON WASHER .125ID .281OD .031
1
6-32 X 3/8 STEEL PEM STUD
4
6-32X1 STEEL PEM STUD
7
#8 GROUND LUG ZIERICK 505-169
3
8? 3/16 SJT AC LINE CORD STRIP 17"
1
HEYCO #1200 STRAIN RELIEF
1
SIDE ENTRY PCB CONN .156 8POS
1
24 PIN BREAKAWAY 90 .156
0.333
20 PIN BRKAWAY 90 LOCK .156
0.75
PCB CONN 90 5 CIR .156
3
4-40 KEPS NUT ZINC
17
4-40 HEX NUT ZINC
6
6-32 KEPS NUT TIN PLATED
64
6-32 KEPS NUT ZINC
28
6-32 X 1/4 HEX NUT ZINC
6
8-32 KEPS NUT ZINC
3
5/16-18 KEPS NUT SJ500
1
TO-247 THERMO CONDUCTIVE PAD
3
TO3 PREGREASED MICA 56-03-2AP
32
TO220 MICA THERMAL CONDUCTOR 56359B
8
22AWG STRAN TC WIR
19
22AWG SOLID SC WIR T&R
79
24AWG SOLID SC WIR RAD
43
5.0W 0R1 5%
BLK RES
12
5.0W 0R15 5%
BLK RES
4
1.0W 0R47 5%FLAME PROOF T&R RES
4
1/2W 1R 5%
T&R RES
4
1/4W 1R 5%
T&R RES
2
1.0W 1R 5%FLAME PROOF T&R RES
4
1/2W 2R2 5%
T&R RES
7
1/4W 2R2 5%
T&R RES
8
2.0W 3R9 5%
BLK RES
2
5.0W 5R6 5%
BLK RES
2
1/4W 10R 2%FLAME PROOF T&R RES
8
1/4W 10R 5%
T&R RES
2
1/8W 15R 2%FLAME PROOF T&R RES
1
1/8W 22R1 1%FLAME PROOF T&R RES
2
1/8W 39R 2%FLAME PROOF T&R RES
8
1/4W 39R 5%
T&R RES
8
1/4W 47R 5%
T&R RES
6
1/4W 47R 5%MINI
T&R RES
4
1/4W 68R 5%
T&R RES
2
1/8W 150R 2%FLAME PROOF T&R RES
4
1/4W 150R 5%
T&R RES
4
1/8W 220R0 1%FLAME PROOF T&R RES
4
1/4W 220R 5%
T&R RES
3
1/4W 249R 1%
T&R RES
12
1/4W 270R 5%
T&R RES
7
1/4W 330R 5%
T&R RES
3
1/4W 470R 5%
T&R RES
10
1/4W 820R 5%
T&R RES
2
1/8W 1K 2%FLAME PROOF T&R RES
4
1/4W 1K 5%
T&R RES
17

YS #
4854
4624
4824
4847
4804
6124
4744
4827
4982
4778
4862
4887
4990
4800
4829
4775
4630
4830
4771
6125
4885
4777
4832
4833
4840
4868
4908
4834
4836
4772
4898
4838
4776
4839
4668
4841
6126
4843
6127
4844
4797
4888
3699
3594
3595
8865
8742
8861
8741
8871
8799
8801
8829
8747
8761
8806
8802
8749
8762
8833
8783
8736
3433
8663
8629
3741
3743
8679
8667
8818
3511
8485
8491
8817
8850
8873
3436
3422
1288

Description
1/4W 1K2 5%
T&R RES
1/2W 1K5 5%
T&R RES
1/4W 1K5 5%
T&R RES
1/4W 2K2 5%
T&R RES
1/4W 3K 5%
T&R RES
1/4W 3K 5%MINI
T&R RES
5.0W 3K6 5%
BLK RES
1/4W 4K7 5%
T&R RES
1/4W 4K7 5%MINI
T&R RES
1/4W 5K36 1%
T&R RES
1/4W 5K6 5%
T&R RES
1/4W 7K5 5%
T&R RES
1/4W 8K2 5%MINI
T&R RES
1/4W 10K0 1%
T&R RES
1/4W 10K 5%
T&R RES
1/4W 14K0 1%
T&R RES
1/2W 15K 5%
T&R RES
1/4W 15K 5%
T&R RES
1/4W 17K8 1%
T&R RES
1/4W 18K 5%MINI
T&R RES
1/4W 20K 5%
T&R RES
1/4W 21K5 1%
T&R RES
1/4W 22K 5%
T&R RES
1/4W 27K 5%
T&R RES
1/4W 33K 5%
T&R RES
1/4W 36K 5%
T&R RES
1/4W 45K3 1%
T&R RES
1/4W 47K 5%
T&R RES
1/4W 68K 5%
T&R RES
1/4W 82K5 1%
T&R RES
1/4W 91K 5%
T&R RES
1/4W 100K 5%
T&R RES
1/4W 113K 1%
T&R RES
1/4W 150K 5%
T&R RES
2.0W 220K 5%10MM BODY T&R RES
1/4W 220K 5%
T&R RES
1/4W 220K 5%MINI
T&R RES
1/4W 470K 5%
T&R RES
1/4W 470K 5%MINI
T&R RES
1/4W 1M 5%
T&R RES
1/4W 1M2 5%
T&R RES
1/4W 4M7 5%
T&R RES
RELAY 2C 01AMP DC48 ???MA PC-S
9.5" 5C-24AWG RIBBON HEAVY DUT.100"
17" 8C-24AWG RIBBON HEAVY DUT.100"
4-40 X 5/16 PAN PH MS SJ500
4-40 X 3/8 PAN PH TAPTITE JS500
4-40 X 3/8 PAN PH MS SJ500
4-40 X 1/2 PAN PH MS JS500
4-40 X 5/8 PAN PH MS SJ500
#6 X 1/4 PAN PH TYPE B JS500
6-32 X 3/8 PAN PH TAPTITE SJ500
6-32 X 3/8 FLAT PH TAPTITE BO#4 HEA
6-32 X 1/2 HEX ND MS ZINC
6-32 X 1/2 PAN PHIL MS ZINC CLEAR
6-32 X 1/2 PAN PH TAPTITE SJ500
8-32 X 3/8 PAN QUAD TPTTE SJ500 #6H
10-32 X 1/2 QDX PH TAPTITE JS500
10-32 X1/2 TRUSS QUAD TAPTITE JS500
10-32 X 7/8 HEX CAP GRD 5 SJ500
10-32 X 1 PAN QUAD TT JS500 BLACK
5/16-18X2-3/4 GRD 5 HEX BOLT JS500
0.080 SPACER OD.700 ID.330 PLASTIC
11/64 NYLON SPACER (MICRO PLASTIC)
10-32 X 1/4 SPACER PHENOLIC
.5 SPACER ID-.171 OD-.25 #912-500
SNAP ON 0.5" SPACER RICHCO
6-32 X 1/4 X 1.75 NYLON SPACER(HEX)
SHOULDER WASHER SWS-229 LENGTH 1/8
3/4 OD X 5/16 ID X .08 THICK WASHER
#6 FLAT WASHER NYLON
#6 SPLIT WASHER ZINC
#10 SPLIT LOCK WASHER BO
#10 FLAT WASHER BLACK OXIDE
#10 INT TOOTH LOCKWASHER BO
1.250ODX5/16ID FENDER WASHER BARE
DPDT PUSH SW PCMT H BREAK B4 MAKE
THERMO/BRKR:N/CLOSED OPEN@60C
AP-3400
T?RD

Qty.
2
1
12
2
8
2
8
7
4
2
2
11
2
20
2
5
10
5
11
2
4
2
1
6
6
2
1
8
6
6
4
4
2
4
2
3
4
4
2
1
1
2
1
3
1
4
4
1
13
2
2
1
15
16
64
2
7
6
4
4
10
1
2
66
16
2
3
1
9
1
2
6
10
8
4
1
2
1
1

EY8
EY7

RED
RED

4

EY6 YELLOW
EY5 YELLOW

C45
80V
330u

2
13AMP
DB2

EY10 BLUE
EY9 BLUE

3

1

C46
80V
330u

2

C47
80V
330u

EY12 WHITE
4

CSA

+145

WC8

+78

WC1

GND

EY11

YELLOW +78

EY12

EY7

EY8

BLACK

EY9
EY10

-78

EY4

WHITE -78

-145

EY5

EY1

EY2

1N4004
D43

1N4004
D42

R108
47K

SENSOR:
100K @ 25~
50K @ 40~
25K @ 55~
10K @ 80~

D37

220uA
530uA

D45
1N4004

RMS IN
RV5
47K
100K R109

GROUND
STRAP

13.5v
Q32 10.7v
15.6v
IDLE
RV6 2N5551
100K
17K8:1%
R111
AMBIENT

TO WC1 ON M1012

R116
27K

28v @ 80~
33v
500mW
ZD15

R115
27K

68K 68K
R113 R112

D41
D38

R124
1K

D40

R123
7K5

MODEL(S):- AP-3400
# DATE
VER# DESCRIPTION OF CHANGE

D48

4v7
500mW
ZD11
25v

PC#4529_BD651->BDX53C_BD652->BDX54C
PC#4651_DEL_LD9->LD14_ADD_NJM431L
Q20A/B_Q21A/B
PC#5353_R60A_1/2W_220K->2W_220K
N
N
N
N
N
N

GND

U1

C14 R33
2u2 10K:1%

5

U2

R29
3K

ROG

20v
500mW
ZD8
R103

+18

HDRM-

GND

15K

D9
D10
C13
100n

R122
2R2

C31
27p

EY14
+18
LTSENSE
RTSENSE
RMS
KILL

40CFM

FAN

MC1
MC1
1
MC1
2
MC1
3
MC1
4
5
RDRV T1

C23
80V
T8 6800u
C24
80V
T9 6800u
C25
80V
6800u

R73
100K
-145

T5

D

ISOTHERMAL
TO HEATSINK
RV1

0.5W

-78

16mA

100K
R66
15K

SERVICE
IDLE CURRENT:
ADJUST FOR 3 TO 5 MILLIVOLTS
BETWEEN TESTPOINTS 8 & 9
ALL UNMARKED DIODES ARE 1N4148.

C53
22n

R7
150R

R67
15K -145

SCH ISSUE: 1.00
BRN
GRN/YEL
BLU

R1
39R

NOTE: Q1 AND Q2 MUST BE
THERMALLY COUPLED
TO Q14 AND Q22
FOR PROPER THERMAL
TRACKING!

C1
150v
1n5

MJE5730
.
MTP2P45 BDX53C MTP8P20
MTW10N40E MJH11018 MAC224 MTP245 BDX54C MTP10N12L MJE2361T BF872

MJ15023
MJ15022

G
MT2
MT1

BBOTTOM E
VIEW

BCE

GDS

B CE
B CE
BC550C MPSA42 MPSA13 MPSA06
NJM431L 2N5517 MBS4992 BC560C MPSA92 MPSA63 2N5551

123

EBC

MT1
NC
MT2

1 REF
2 ANODE
3 CATHODE
TO WC1 ON M1012

BCE

CBE

EBC

EBC

EBC

BCE
MPSA92
MPSA42

R9
249R:1%
LIN

RT1
4K7

R4
2R2

R10
4K7

R13
36K
R19
249R:1%

Q2
BC560

D50
R131
1K5

D51

R132
1K5

Q20B

NJM431 2V5

Q38
MPSA92
R130
10K

63v

1N4004
D49

R128
220K
R129
1M

GND
OVERHEAT SHUTDOWN

R15
150R

2
R79
R11
22R1 0R47

4V7
1W
ZD10

D21
Q13

3V0
500mW
C6 ZD3
R12 16v
39R 330u 12V0
500mW
ZD4

C7
R14
39R 16v
330u

R20
3K

R21
2K2

5

R22
3K

R23
4K7
D5

R70
18K
Q8
BC550

2R2
R41
4K7
R42
Q10
BC560
R43
470R

C8
10v
2u2
C13
16v 22n

D4

1R FLMPRF
270R
C26
16v 22n
R34
GND
2OK
R40A

20K
R35A
GND

R35
1K

MR854

MR854

MR854

D13

D14

D15

Q14

Q16

Q18

Q4
BC550
C5
10v
22u

4v ACROSS R17

R38
D9 27K D10
R39
BAV21
91K
R40
1K
-145 -78
C27
16v 22n
R49

270R
R50

1R

7

R53
0R15

R56
0R1

R58
0R1

R60
0R1

R52
0R15

R57
0R1

R59
0R1

R61
0R1

R62
3R9

C19
150v
10n

9
R51
220R0

GND
Q22

Q24

Q26

Q28

YS#6927
D16

YS#6927
D17

YS#6927
D18

YS#6927
D19

MR854
D23

MR854

MR854

MR854

MR854

16v
1W
5W

3K6
R45
5W

R46
1K

YS#6900

0.5W

Q6B

-F15

YS#6900

R55
220R0

BAV21

R48
39R

E CB

Q20

YS#6900

10
D11

R44
C14
GND 160V 220n

+78

YS#6900

8

R36
91K
D7
R37
27K

0R47

2R2
2R2
2X R49B R49A
MTP2P50E
R71 G PS Q6A
D
47R
S
R72
GP
D
47R

Q19

YS#6900

D12

YS#6900

+145 +78

1W

ZD2

Q17

YS#6900

D22
MR854

1R

18V
500mW
ZD7
2R2
R27

R24
220K

Q7
2N6517
350V

12V0
500mW
ZD5
3V0
500mW
ZD6

R25
220K

Q15

YS#6900
MR854

R32
39R

6

0.5W

R26
470R
Q9
BC550

C12
16v 22n

D1

3
16v
500mW

R16
15K
C4
470p

BCE
MJE340
MJE350

Q11
MTP10N15L

R33

D3

GND

R17
R18
249R:1% 10K:1%
EBC

500mW
16v

4

R3
2R2

220/240 VAC 50 Hz LINE

GROUND
STRAP

Q36
2N5551
R127
4K7

0.5W

1
R2
68R

CHASSIS
UNDER CAP:
L1

S

C11
GND 160V 220n

ZD1

R8
15K

Q1
BC550

THE MAXIMUM CURRENT AVAILABLE FROM
RDRV (LDRV) IS LIMITED TO 75 mA.

NOTE THAT THE CAPACITOR VOLTAGES SHOWN ARE
THE MINIMUM REQUIRED FOR PROPER OPERATION.
ACTUAL VOLTAGE RATINGS MAY BE HIGHER.

WC10

9

Q37
BC550

ZD8
16v
1W
R28

4 WATTS
Q5
MTW10N40E

D2

T10

CAUTION: VOLTAGES GREATER THAN
300 VOLTS ARE PRESENT
ON THIS CIRCUIT BOARD.

OUTPUTS

GND

G N

C2
1n

GND

CSA

10V
500mW
ZD17
C52
4u7
R126
10K

1N4004
D48

+145

MR854

75mA IDLE

Q3
BC560

+78
GND

D
GN
S

5W

0.5W

-78

EY12 WHITE

EY2

GREEN

R124
1K5

RELAY

R2

C10
100v 680p

3K6

MTP2P50E

C18
10n

RTSENSE

R31
47R

3K6
R29A

C3
10v
22u

FLMPRF

R76
8K2

T7

GND R5
R6
249R:1% 10K:1%

T4

0.5W

1N4004

C55 4n7

TITLE: AP3400

D28

D25
C17
100N D27

GND

R77
470K

R68 +145
15K

FLMPRF

BRN

Q33
2N5551

R69
15K

CW

8A/SW

EY10 BLUE
EY9 BLUE

C22
80V
6800u

R78
470K
+78

Q31
MPSA92
D24

CSA

AC LINE FILTER

PCB#&VER: M1002A/M1011A/M1012A/M1013A

C54 22n
CSA EY4

BROWN
GRN/YEL
BLUE

MODELS: AP-3400
POWER_AMP

TB1

PC#5444_R120->122_1/4W->1/2W
N
N
N
N
N
N
N
N
N

DATE: AUG/17/98

YORKVILLE NAME: AP3400

220/240VAC
YSL#1288E

R74
150K

C9
300V 2n2
R29
5W

+F15

1W

GRN

R75
150K

Q32
BC550

EY6 YELLOW
EY5 YELLOW

MODEL(S):- AP3400
# DATE
VER# DESCRIPTION OF CHANGE
1.40
V
V
V
V
V
V
V
V
V

RDRV
RDRV

EY8 RED
EY7 RED

M1013A.SCH_DATABASE_HISTORY
1 AUG/12/97
2 D
3 D
4 D
5 D
6 D
7 D
8 D
9 D
10 D

EY11 GREY

D26
Q34
MPSA42

R30
1K2

FLMPRF

230V

+145
1N4004

11

LD6

-18

MW35 RMS
MW3 KILL

4v ACROSS R5

ROG T2
RCLIM T3

T6

0.5W

WC11
EY3

ORANGE WIRE TO
EY3 FOR 245V
GREEN WIRE TO
EY3 FOR 230V
TR1
245V ORN

RTSENSE
RTSENSE

0.5W

TB2
13A/85C

R66B
10R
FP

+145

CE AC WIRING

PC#5546_R55,R51 249R->220R0_R40A,
R35A_470R->20K_R36,R39_27K->91K
R37,R38_10K->27K_R34,R50_249R->270R
C26,C27_10u->22N_R52,R53_0R1->0R15
R11,R12,R14,R33,->FLAMEPROOF
PC#5551_ADD_R79,ZD10_ACROSS_R11
ADD_R79,R80
PC#5656_R49,R79->0R47/1W_ZD7->18V
N
N

+18
CONTROL
INTERFACE:
1
MW32 +18

GND

R70B
68K

C29B
16v
330u

R65B
10R
FP

C25B
10v
4u7

WARNING: 300 VDC IS BETWEEN THE POWER SUPPLIES. THIS PRESENTS A SIGNIFICANT SHOCK HAZARD. PLEASE, USE EXTREME CAUTION WHEN SERVICING!

0.5W

2.00
.
.
.
.
2.10
.
2.20
V
V

-18

RED

R69B
33K

C28B
160V
10u

13
GND
S2 C2 RELAY
48V VERSION
8 1 16 9
ACTGND
+78
TO ACTIVITY LEDS.

MW33 LTSENSE
MW34 RTSENSE

RCLIM

1 DEC/09/97
2 .
3 .
4 .
5 .
6 JAN/14/98
7 .
8 MAR/12/98
9 D
10 D

C49
25v
100u

LD2

M1002A.SCH_DATABASE_HISTORY
MODEL(S):- AP-3400
# DATE
VER# DESCRIPTION OF CHANGE

RED

POWER

-78

R30
820R

PROTECT

C48
25v
100u

FP=FLAMEPROOF

Q10
A63

C1 S1

LD5

+18

R107
Q31 10R
FP
BDX54C

R105
1K

0.5W

R31
220K

R106
10R
FP
BDX53C

C24B
22u
R64B
150R
FP

R1

4

Q30

20v
500mW
ZD7

4

33078
R35
249R:1%

R32
249R:1%

15K

LOG

-145

D46

R104
1K

0.5W

10v

1/2

8
R121
2R2

D11
7

R102

Q19B
MJE350

R63B
C23B
39R
300V
10p
Q17B
BC550

6

GND

47u

D23B
D21B

R52B
1K5

R66A
10R
FP

TO AMP
1 A (LEFT)
LDRV
MW12
LOG
MW13
LCLIM
MW14
LFB
MW15
LTSENSE
MW1

LOG

10v
R53B
470R

+78
C17
D12

6
R62B
47R

Q16B

R51B
1K5

C29A
16v
330u

-145

R34
10K:1%
6

BC550
Q9
R28
47K

C12
47p

R50B
4K7
D18B

-18

R42
10K:1%

CLPD8

R70A
68K

D22B

MJE2361T

R41B
7K5

R65A
10R
FP

C25A
10v
4u7

Q18B
MJE340 ROG
1.6 WATTS
47R
R61B

D20B

R45B
1K

C28A
160V
10u

C51
470u

EY13

GND

CLP+

MJH11018

R120
2R2

7

2

Q8
BC550
ABOUT
5 WATTS
Q35

C24A
22u
R64A
150R

220K
R60B

D19B

Q13B
MPSA92

R63A
39R

LOG

R44B
1K

R42B
7K5

Q17A
BC550
R69A
33K

R58B
39R

Q15B

D16B LOG

Q19A
MJE350

C27B
160V
10u

MJE5730

ROG

R52A
1K5
10v
R53A
470R

R46B
4K7

D14B
C20B R43B
16v 22n
3K
D15B

C19B
16v
22u

R68B
68K

THIS BOARD MAY
BE OPERATED
WITHOUT THE POWER
AMP MODULES. SEE
NOTE ABOUT TEST
FIXTURE PLUG.
TO AMP B (RIGHT)
1 RDRV
MW22
ROG
MW23
RCLIM
MW24
RFB
MW25
RTSENSE
MW2

R59B
10R
FP

C26B
10v
4u7

Q12B
MPSA42

R125
270R
16v

33078

Q33
A06

GND

6

U3

R40
10K:1%

Q7
BC550
R27
47K

D7

R25
17K8:1%

R24
1K

Q34
2N5551
R119
220R
4v7
500mW
ZD14

5

R62A
47R

D23A
D21A

C23A
300V
10p

6

1/2

C50
25v
22n

-18

R56B
17K8:1%

D13B

R40B
220R

5

D20A

R45A
1K

R51A
1K5

1/2

HDRM+

47R
R61A

D22A

MJE2361T

33078

R26
3K

R23
1K

5

R117
15K

R39
82K5:1%

D19A
R44A
1K

C18B
16v
22u

10v

C22B
R47B
300V
1K5
10p
D17B

R39B
7K5

Q18A
MJE340
220K
R60A

R50A
Q16A
4K7
D18A

R42A
7K5

100K

R41
82K5:1%

R38B
7K5
ROG

Q13A
MPSA92
R41A
7K5

R55B
21K5:1%

R58A
39R

Q15A

ROG

D16A

RV4

100K

CLP-

7

R118
22K

4v7
500mW
ZD10

D39

2.30
2.40
.
2.50
V
V
V
V
V
V

R22
5K36:1%

ZD13
500mW
33V

7

D47

M1011A.SCH_DATABASE_HISTORY

C25

ZD12
500mW
33V
R110
14K0:1%

RV3

R21
10K:1%

BC560
Q6

25A

16v

D44
1N4004

0.5W

UNDER CAP:
L1

R114
1.2M

330R
R36

+18
C27A
160V
10u

MJE5730

R56A
D14A
17K8:1%
C20A R43A
16v 22n
3K
D15A

C19A
16v
22u

R59A
10R
FP

Q12A
MPSA42

D13A

R40A
220R

Q11
BF872

GND

C11
47p

R_LEVEL

-145

EY3

0.5W

AT 25~ AMBIENT:
11 A = 33K
13 A = 15K

1u
C10

HDRM-

C18A
16v
22u

+78

-78

EY6

BLUE -145

+78

D46

1 JUN/22/94
2 DEC/02/94
3 .
4 APR/08/97
5 D
6 D
7 D
8 D
9 D
10 D

-145
C15

10u

GND

100K

R19
45K3:1%

R18
270R

10u

GREEN WHITE
CHASSIS
120 VAC 60 Hz LINE

16v

100K

GND

HDRM - CLP = 300mV
R16
113K0:1%

RV2

ISOTHERMAL
R37
15R
FP

16v

R46A
4K7

R39A
7K5

RV1

R20
10k:1%

16v

WC10

BLACK

C3
1u

+78

EY13

GND

R17
270R

R15
113K0:1%

HIGH CURRENT INTERFACE:
FROM M1013 BRIDGE RECT PCB,
TO AMP A AND AMP B.
EY14
EY15
+145
+145
EY16

CLP+ 9.5

R38A
7K5

R38
82K5:1%

C26A
10v
4u7

+145
R67B
33K

R57B
150R
FP

R49B
470R
C21B
22u
R48B
1K5

0.5W

+145

C53
22n
+78

-18

GND

P2
10K
GND

-18

-18

+2dB

RED

R43
82K5:1%

R67A
33K
R68A
68K
Q14A
BC560

C22A
R47A
300V
1K5
10p
D17A

33078

C29
100n

EY17

20KHz

BLACK

WC4

WC7

C26
100n

-18

GND

13AMP

CSA

C6
100n

HDRM+ 9.85

WC6

C55 4n7
EY2

GND

-18

10v

U3
1/2

EY2

C44
80V
330u

EY11 GREY

MS4

+18

R57A
150R

3K6
C15
300V 2n2

ZD9
S
GP
D

Q21

Q23

Q25

Q27

YS#6927

YS#6927

YS#6927

YS#6927

-78

Q12
MTP8P20

D20
MR854
L1

R47
C16
39R 100v 470p

4uH

10u
16v

R64
33K
MT1 MBS4992 Q30 MT2
C21
TRIAC_MAC224
G
R65 G MT1
MT2

-145
BP1
EY1

10R
GND

GND

BP2
EY2

5W

WC3

1

1
3

1

0.5W

TR1

WC11
EY3 BLK
TYPE_H
1KVA
120VAC
YSL#1288
CSA
UI
C54 22n
EY4 BLK
12A/SW

TB1

DB1
3

2

+18

+145
R49A
470R
C21A
22u
R48A
1K5

2W

R36
1K5
C20
16v
6n8

TB2
13A/85C

2

18Ga BLACK WIRE
TO M1011 GND GND

1/2

R45
10K:1%

3

U3
5532

HDRM-

4

C24
T1 -18
100n

16v

Q21B

R24
10K:1%

-18

1
3

33078 BYPASS:
+18
+18

R54A
47K
R55A
21K5:1%

R14
10K:1%

R44
10K:1%

R54B
47K

47u

C9
D6

D5
R13
C5
2u2 10K:1%

16v

R100
100K
C23
220p

3
1

NJM431 2V5

R23
1K

R34
470R
2

5

U2

2

5W

LEFT = CHAN A

10K:1%
R21
C11
470p
C12
470p

6

T3 GND
T2

+18

3

1

C27
220p

5W

1K
R20

+18

C2
47p

L+
LR+
R+18

5: LTSENSE

R96
100K

BC560
Q14B

JB3 1 3 5

CW

3

MUST BE BREAK BEFORE MAKE, #3436
C17
R33
16v 470n
17K8:1%
R32
C15
16v 68n
4M7
14K0:1%
33078
R27
R28
R29
1/2
R22
C18
C19
10K:1%
17K8:1%
17K8:1%
3 U2
6
16v 150n
1 16v 47n
7
C16
16v
2
5 U2
R35
100n
1/2
82K5:1%
2
R30
R31
33078
5K6
7K5
R25
R26
14K0:1% 1R
C22
TO PIN 4 OF 5532
100n
C14
100p
C13
100p

JB4
2
BAL_IN
3
NUTRIX 1

2

1

IN

FROM INPUT
PCB:

7

R12
249R:1% LOG
33078

BAV21
D35
220n 250v
C43

ACTGND
R97
470K
220n 250v
C42

BAV21
D36

EXTRA BRIGHT LEDS!

5W

6

CLPBC550
D2
Q4
R7
47K
Q3
BC550 R8
3K

R4
1K

8

RED

R101
470K

GND AT
HIGH CURRENT
INTERFACE
(REQUIRED FOR OPERATION)

GREEN

GREEN

5W

3

IN

T

C23
100n

6

R

+4dB 55Hz
FILTER
5

S

-1dB 30Hz

OUT

LFB

1/2

33078
SIG_L
T8 REF_L
T7 SIG_R
T6 REF_R
T5
T4 +18

GND

R11
249R:1%

HARD LIMIT @ 11.2 Vp

1/2

+2dB

IN

CH_A_IN

20KHz

R3
2 17K8:1%
1
3 U1

4:

LD1

R9
820R

Q28
A63

5W

5

R1
5K36:1%

10u

LCLIM

Q29
A13

5W

4

2

C16

D1

LOG

3:

500mW
4v7

LD4

R99
330R

0.5W

1
OUT

NO_GOLD 2 4 6

16v

1/2

5532

TO PIN 4 OF 5532

4

NO_GOLD 2 4 6

U3

R18
1K5
C10
16v
6n8

C21
100n

IN = MONO
S2 S2

T

C9
16v 150n
R17
82K5:1%

R13
7K5

S1

R

C8
7 16v 47n

U1

6

OUT

S

R4
1R
C4
100p

5

R2
1K

10u

2:

R98
330R

LD3

5W

JB2 1 3 5
CH_B_IN

1

1/2

33078
R3
14K0:1%

17K8:1% 17K8:1%
C6
16v
100n
R12
5K6

GND

C32
27p

500mW
4v7

THE OPERATION OF THE FAN
AND THE HI-TEMP SHUT DOWN
MAY BE VERIFIED BY GROUNDING
RTSENSE OR LTSENSE.

LDRV

5W

U1

C28

7
5

D4
Q5
A63
C4
100n

1:

2W

1
3

6

1/2

6.4 uA ->
Q2 300mV/47K
BC550
R5
CLP+
47K

BC560
Q1

16v

Iled=20mA

R10
220K

Q20A

2

C2
470p
R2
10K:1%

R1
1K

R9
10K:1%

P1
10K

HDRM+

NJM431 2V5

C1
470p

JB1
2
BAL_IN
3
NUTRIX 1

R16
470R

R6
3K

C1
47p

25A

LEFT ACTIVITY ZD2
ZD1 RIGHT ACTIVITY

D3

Q21A

14K0:1%
R7

RIGHT = CHAN B

R15
17K8:1%

GREEN WIRE TO
GROUND STRAP:
WC1
GND

CW

C3
100p

IN

10K:1%
R6

OUT

1K
R5

MUST BE BREAK BEFORE MAKE, #3436
C7
16v 470n
R14
C5
16v 68n
4M7
33078
R10
R11

TO TEST THIS PCB WITHOUT POWER OUTPUT MODULES CONNECTED,
THE FOLLOWING PATCH PLUGS FOR MW1 AND MW2 SHOULD BE ASSEMBLED.
(LOG AND ROG MUST BE GROUNDED TO THE HIGH CURRENT INTERFACE GROUND) +18

+18

L_LEVEL

NJM431 2V5

+4dB 55Hz
FILTER
S1

-1dB 30Hz

R63
5R6

6
5

33078 BYPASS:
+18
+18

1

U2

D5
16v

C9
D6

R14
10K:1%

R13
C5
2u2 10K:1%

47u

R54A
47K
R55A
21K5:1%

16v

HDRMR44
10K:1%

R45
10K:1%

2

+18

1

3

4

+18

U3
1/2

2

C6
100n

1

MS4

C26
100n

GND
BLACK WIRE
DIRECT TO
M1012

-18
GND

-18

-18
CLP+ 9.5

HDRM+ 9.85

+145

R17
270R

R15
113K0:1%

C3
1u

16v

-145
C15

1u
C10

CW

P2
10K

10u
16v

R26
3K

C25
R22
5K36:1%

R23
1K

D7

R25
17K8:1%

6

Q7
BC550
R27
47K

33078
R24
1K

Q8
BC550
C12
47p

+78

R39
82K5:1%

HDRM+

5
R40
10K:1%

CLP+

10v

R68A
68K
Q14A
BC560

C26A
10v
4u7

R58A
39R

220K
R60A

R50A
Q16A
4K7
D18A
C23A
300V
10p

C24A
22u
R64A
150R

R63A
39R
Q17A
BC550
R69A
33K
R70A
68K

C17
D12

U2

10v

+145

4

1/2

33078
R35
249R:1%

47u

+78
GND

ROG

-78
-145

+18

HIGH CURRENT INTERFACE:
FROM M1013 BRIDGE RECT PCB,
TO AMP A AND AMP B.
EY14
EY15
+145
EY16
EY11
EY12
+78
EY13
EY7
EY8 EY9
GND
EY10
EY4
EY5
-78
EY6
EY2
EY1
-14 5
EY3

+18
CONTROL
INTERFACE:
1
+18
MW32
LTSENSE
MW33
RTSENSE
MW34
RMS
MW35
KILL
MW3

D9
R102
0.5W

15K

R104
1K

Q30
R106
10R
BDX53C
FP

20v
500mW
ZD7
20v
500mW
ZD8
R103
0.5W

15K

GND
R105
1K

R107
Q31 10R
FP
BDX54C

+18
C48
25v
100u
C49
25v
100u

-18

R31
220K

D10
C13
100n

TO TEST THIS PCB WITHOUT POWER OUTPUT MODULES CONNECTED,
THE FOLLOWING PATCH PLUGS FOR MW1 AND MW2 SHOULD BE ASSEMBLED.
(LOG AND ROG MUST BE GROUNDED TO THE HIGH CURRENT INTERFACE GROUND)

Q10
A63

C31
27p

R30
820R

LD2
GND
RED

SERVICE CAUTION: VOLTAGES GREATER THAN
300 VOLTS ARE PRESENT
ON THIS CIRCUIT BOARD.
THE MAXIMUM CURRENT AVAILABLE FROM
RDRV (LDRV) IS LIMITED TO 75 mA.

1:

LDRV

2:

LOG

3:

LCLIM

4:

LFB

5: LTSENSE

220K
R60B

D20B

Q18B
MJE340 ROG
1.6 WATTS
47R
R61B

6

R62B
47R

D23B
D21B

R63B
C23B
39R
300V
10p
Q17B
BC550

C24B
22u
R64B
150R
FP

10v
R53B
470R

R66A
10R
FP

LOG
LOG

R52B
1K5

C29A
16v
330u

TO AMP
1 A (LEFT)
LDRV
MW12
LOG
MW13
LCLIM
MW14
LFB
MW15
LTSENSE
MW1

Q19B
MJE350

Q16B

R51B
1K5

R69B
33K

C28B
160V
10u

R70B
68K

R65B
10R
FP

C25B
10v
4u7

BDX53C BF872
BDX54C

C29B
16v
330u
R66B
10R
FP

BCE

-145
11

6
4

GND
D46
LD5

PROTECT

RED

R2

R1

LD6

POWER

GREEN

10V
500mW
ZD17
C52
4u7
R126
10K

1N4004
D48

R124
1K5

-18

13

9
Q36
2N5551

Q37
BC550
R127
4K7

+145
D50

D51
E CB

R131
1K5

Q38
MPSA92
63v

BCE

MJE5730
MJE340 MJE2361T
MJE350

RELAY

GND
C1 S1
S2 C2 RELAY
48V VERSION
8 1 16 9
ACTGND
+78
TO ACTIVITY LEDS.

R132
1K5

BCE

NJM431L
1 REF
2 ANODE
3 CATHODE
123

R130
10K
BC550C MPSA13
BC560C MPSA63

R128
220K
R129
1M

1N4004
D49
CBE

EBC

MPSA42
MPSA92 2N5551

GND

OVERHEAT SHUTDOWN

EBC

NOTE: ALL UNMARKED DIODES ARE 1N4148
DATE: AUG/05/98
FP=FLAMEPROOF

LOG

THIS BOARD MAY
BE OPERATED
WITHOUT THE POWER
AMP MODULES. SEE
NOTE ABOUT TEST
FIXTURE PLUG.
TO AMP B (RIGHT)
1
RDRV
MW22
ROG
MW23
RCLIM
MW24
RFB
MW25
RTSENSE
MW2

D22B

R45B
1K

THE OPERATION OF THE FAN
AND THE HI-TEMP SHUT DOWN
MAY BE VERIFIED BY GROUNDING
RTSENSE OR LTSENSE.
GND AT
HIGH CURRENT
INTERFACE
(REQUIRED FOR OPERATION)

D19B

R50B
4K7
D18B

-18

R125
270R

D11
7

HDRM-

R65A
10R
FP

C25A
10v
4u7

R58B
39R

TIP50

R42B
7K5

C28A
160V
10u

C27B
160V
10u

MJE5730

Q13B
MPSA92

R41B
7K5

R59B
10R
FP

C26B
10v
4u7

Q15B

R44B
1K

D16B LOG

ROG

-145

R34
10K:1%

5

C19B
16v
22u

Q19A
MJE350

TIP50

R56B
D14B
17K8:1%
C20B R43B
16v 22n
3K
D15B

R67B
33K

R68B
68K

Q12B
MPSA42

D13B

R40B
220R

5

R62A
47R

D23A
D21A

Q13A
MPSA92

10v
R53A
470R

C18B
16v
22u

47R
R61A

D20A

R46B
4K7

R39B
7K5

Q18A
MJE340

10v

C22B
R47B
300V
10p
1K5
D17B

R38B
7K5

D22A

R45A
1K

R51A
1K5

+18

ROG

R57B
150R
FP

R49B
470R
C21B
22u
R48B
1K5

R59A
10R
FP

MJE5730
D19A

+145

R55B
21K5:1%

C27A
160V
10u

Q15A

R44A
1K

R52A
1K5

7

6

R32
249R:1%

ROG

R67A
33K

R57A
150R

R42
10K:1%

C14 R33
2u2 10K:1%

BC550
Q9
R28
47K
R29
3K

-18

U3

6

CLPD8

R42A
7K5

1/2

2

1/2

R41A
7K5

100K

R41
82K5:1%

16v

U1

D16A

33078

7

5

R56A
D14A
17K8:1%
C20A R43A
16v 22n
3K
D15A

RV4

100K

BC560
Q6

25A

330R
R36
RV3

16v

C19A
16v
22u

R49A
470R
C21A
22u
R48A
1K5

Q12A
MPSA42

D13A

R40A
220R

Q11
BF872

R21
10K:1%
CLP-

C11
47p

C18A
16v
22u

+78

ISOTHERMAL
R37
15R
FP

GND

HDRM-

R_LEVEL

100K

R19
45K3:1%

R18
270R
10u

100K

GND

HDRM - CLP = 300mV
R16
113K0:1%

RV2

+145

R46A
4K7

R39A
7K5

RV1

R20
10k:1%

16v

R38A
7K5

R38
82K5:1%

R43
82K5:1%

R54B
47K

C22A
R47A
300V
1K5
10p
D17A

33078

C29
100n

-18

EY17

-78

1

2

3

-18

3

0.5W

+18

7

3

C27
220p

NJM431 2V5

8

LOG

C23
220p

PC#4529_BD651->BDX53C_BD652->BDX54C
PC#4651_DEL_LD9->LD14_ADD_NJM431L
Q20A/B_Q21A/B
PC#5353_R60A_1/2W_220K->2W_220K
PC#5528_Q16 A,B REPLACE WITH TIP50#6891
N
N
N
N
N

NJM431 2V5

L+
LR+
R+18

R12
249R:1%
33078

R96
100K

R100
100K

2.30
2.40
.
2.50
2.60
V
V
V
V
V

Q20B

BC550
Q4
R7
47K
Q3
BC550 R8
3K

C2
47p

RED

BAV21
D35
220n 250v
C43

R97
470K
220n 250v
C42

BAV21
D36

EXTRA BRIGHT LEDS!

1 JUN/22/94
2 DEC/02/94
3 .
4 APR/08/97
5 AUG/05/98
6 D
7 D
8 D
9 D
10 D

ACTGND

Q21B

FROM INPUT
PCB:

GND

GREEN

Q29
A13

GREEN

BC560
Q14B

CLPD2

R4
1K

R9
820R

R11
249R:1%

R101
470K

LD1

1/2

1/2

33078

Q28
A63

MODEL(S):- AP-3400
# DATE
VER# DESCRIPTION OF CHANGE

0.5W

10u

R3
2 17K8:1%
1
3 U1

C32
27p

LD3

R99
330R

NJM431 2V5

R1
5K36:1%

Q5
A63
C4
100n

R98
330R

500mW
4v7

LD4

2W

R2
1K

10u

16v

6.4 uA ->
300mV/47K
Q2
BC550
R5
D1
CLP+
47K
HARD LIMIT @ 11.2 Vp

BC560
Q1

500mW
4v7

Iled=20mA

R10
220K

D4

+18

NJM431 2V5

C28

HDRM+

D3

ZD1 RIGHT ACTIVITY

Q20A

25A
16v

C16

R6
3K

C1
47p

M1011A.SCH_DATABASE_HISTORY

LEFT ACTIVITY ZD2

+18

Q21A

P1
10K

CW

L_LEVEL

YORKVILLE NAME: M1011A26

CAPACITOR VOLTAGES SHOWN ARE MINIMUM REQUIRED.

MODELS: AP-3400
.
PCB#:

EBC

M1011A

SCH ISSUE: 2.60
TITLE: SCH_NAME

#XXXX

1

MW4

D8POS.RT.ANGLE_MOLEX
RAINPUT_BOARD
OB TUPNI
BLK
WIRE

4148

270R
R125
330R
R36

R124
C11

R31

@ZD1

BLANK SIZE=16.000"X11.050"

D48
1N4004

AMP_A

POT

AMP_B

1

MOTTOB

B

4K7
220K
10K
1M
R129

FUNCTION
C42
250V
220N
R26

E

1
_MW3

C3

1N4004

J4

J6

1K5
J7

J8
J9
10K0

BLK WIRE
R12

R96

C27

R14

47K

C26

R34

D12
D11

J10

113K0

R21
16V
1U
@R2

16V
1U
@R2

113K0
10K0
220P
C23

R100
R54A

R33

4148
4148

10K0

10K0
100N

33078

10K0

@U1

R131
1K5

1

TP9

10K
R126

C52
10V

R28

PART#
FUNCTION
BF872

R27

82K5
100N

R38
J11
C29
82K5
10K0
J13
R44
10K0
R32

J20
J21
R11

R7

R8
R5
R6

220P
100K
249R
J26

C9

D5

D49
R132

10R

F
RED
F
R106
BDX53C

B

FUNCTION

E
PART#

J3
HS1

F
YELL
F

J1

F
F

BLK
WHT

F
F

PART#

BDX54C

B

20V

FUNCTION

E

C49 R66A
10R

4148

25V
100U

D23A

F
F

BLUE

ZD8

47R @R9
R62A
4148
D21A
4148
D20A
PART#
4148
D22A
R63A
39R
47R @R9 R61A
D19A
4148
@R11 33K
R67A
PART#
10R
R65A
68K @R12
10R
R59A
R68A
C25A
150R @R7 R57A
R15 HS2 @C1300V
220K
@R7
150R
R64A
2WATT @R8
C22A 10P
R49A
470R
R60A
R58A
33K @R11
R53A
39R
470R
R69A
68K @R12 R70A
1K5
C21A
NJM431 Q14A
2V5
Q21A
MJE340

M1011-5.13
M1011-5.13
C32
R18
270R
45K3

4148

D6

MJE350

ASSEMBLY
PCB MECH
3K

47K

3K

47K

J22

249R

249R
J19

J18

J16

R39
R40

47K

1

PPOWER_SUPPLY
US WOP

AZ
D46 HOLE
RE1

220K

47K

C1

3K

ZD17

NO NC C
AROMAT_RELAY
48V_COIL

#3699
C31

470K

47P

BAV21

D7

4148
4148

D8

C12

R29
3K

47P
R24
R23

R3
R4
R2

1K
1K
17K8
J17

@U1

U1

33078

5K36

R1

R97
D36

27P

NOTE RELAY HAS 48V COIL
@10R

4148

100N
820R
4148
4V7

1K5

0.5W

+
GRN
LD6
+
RED
LD5
C13
R30
D10
D9
ZD2
Q29
@R13

5K36
R25
TP2

@R1

16V
10u
17K8
1K
1K
4148

TP1
C2
47P
D1
4148

47P

27P

@R14

270R

4148

J27

BLUE
EY4

R47A
R16
R46A
R20
R50A

J24
100K
47K

249R

R54B

@R5

4148
4148

@R5

4K7
4K7

D50

1

300V
D17A

R51A

4148

1K5
4148
4148

17K8
1K
1K
4148

R41A
7K5
7K5
R39A
22U
C19A 16V

1
_MW2

D13A

D18A
D16A
R56A
R45A
R55A R44A
21K5

R35

4K7
4K7
1K5
39R

1K
1K

1K5
R51B

4148

D18B

4148

BC560
1K5

C18B

16V C18A
22U

22U
16V

D16B

17K8

4148

7K5

7K5

_MW1 16V
C19B 22U

R44B

R41B
D13B

R39B

D51

21K5

R55B

FUNCTION

R50B
R46B
R47B
R58B

4148

D17B

MJE340

R67B
33K @R11
68K @R12 R68B
Q20B
C25B
10V
4U7
C26B 4U7
PART#
HS3
10V
PT#4790
R60B @R8 220K
4148
2_WATT
47R @R9
D19B
4148
R61B
R63B
39R
4148
D22B
@R9

3K
1K5

22N

4148

4148

7K5

7K5

220R

220R

7K5

7K5

4148

4148

22N

1K5
3K

22U
10V

1K5

470R
10R
10R
470R
150R
150R

C29B

R48A

@R7
@R7

R52A
R43A

R53B
R64B
R57B

R59B
R65B

R49B

R48B

C24B

R43B
R52B

C20B

D15B

D14B

R42B

R38B

R40B

R40A

R38A

R42A

C20A
D15A
D14A

10V
22U

PT#4400
25A10K

@R1

16V
10u

D2

ZD1
R9
220K
R10
R19
R17

M1011A
AP-3400
VER 5.13

4148

47R
R62B

10R
R66B

C24A

C25
J15
R22
+
RED
LD2
+
GRN
LD4 -

-18
NC
NC
+18
RR+
LL+

4V7

820R
LD1
D4

C4
D35
BAV21

470K
R101

D21B
D23B

4148

BC550

GUIDE
ETCH
PT#4400
25A10K

+
RED
4148

LD3
100N

4148

PART#

"500.

MJE350

"800.
ETCH
"210.
GUIDE

"020.

SHEAR

ETUOR
EGAG

ELOH/"10.0

PC#4443_R17,R18_470R->270R
R19_51K->43K
PC#4533_R19_43K->45K3
PC#4545_R1/R22_6K2->5K36
SHEAR
PC#4529_BD651->BDX53C_BD652->BDX54C
PC#4651_LED’S->NJM431+2_RESISTORS
Q14A/Q21A_MOVED_TO_AID_INSERTION
PC#5353_R60A/B->2_WATT
PC#5497_R66A/B_1/8WFP->1/4WFP
PC#5528_Q16 A,B REPLACE WITH TIP50#6891
N
4.51
.
4.52
4.52
4.53
5.00
5.10
5.11
5.12
5.13
V
1 AUG/06/93
2 .
3 JAN/18/94
4 FEB/94
5 JUN/22/94
6 NOV/29/94
7 FEB/15/95
8 APR/08/97
9 OCT/27/97
10 AUG/05/98
11 D
PC#4529_BD651->BDX53C_BD652->BDX54C
PC4651_LED’S->NJM431+2_RESISTORS
Q14A/Q21A_MOVED_TO_AID_RAD_INSERT
PC#5497_R66A/B_1/8WFP->1/4WFP
SHEAR
N
N
N
N
N
N
N
4.53
5.00
5.10
5.12
V
V
V
V
V
V
V
JUN/22/94
NOV/29/94
FEB/15/95
OCT/27/97
D
D
D
D
D
D
D

C28B

MODEL(S):- AP-3400
# DATE
VER# DESCRIPTION OF CHANGE
MODEL(S):- AP-3000
# DATE
VER# DESCRIPTION OF CHANGE

-55
C29A

10V
22U

Q17A

R69B
33K
2V5
16V
330U NJM431 TJH1
Q21B
R70B @R12 68K
@R11

+
GRN
-

D3

-1101M
31.5

SHEAR

NJM431

TP6

M1011A.PCB_DATABASE_HISTORY

EY10
4U7
10V

2V5

22U
10V

10V
4U7

BC550 Q17B R56B

Q13A

PRODUCTION NOTES
1 RV2,RV4 TO BE HAND
INSERTED C3 1U 16V
TO BE HAND INSERTED
1
2
3
4
5
6
7
8
9
10
11

D20B

C21B
10U
160V
160V
10U

@C1 C22B
J14

"500.

R103

C28A
@C2

@C2
C27B

Q18B

Q19B

C27A
@C2

@C2

B
E

"800.
ETCH
"210.
GUIDE
"020.

M1011.PCB_DATABASE_HISTORY

EY1

BLUEY2
EY3
@R3

0.5W

R105
1K
15K

WHT
EY6
EY5
TP5

-100

Q31
10U
160V
160V
10U

WHT
330U
16V

EY7

HS5

BLK
EY9 EY8

10R
Q20A
2V5
NJM431

BLKL

15K

R102
EY17
R107
C48
25V
100U

EY11

GND
0.5W

@R3

YELL
1K

EY13
BLKEY12

ZD7
20V

C26A

+55
Q30

Q19A

R104

EY14

YELEY15
EY16

Q18A

@Q4
MPSA92

B

E

@Q3
MPSA42

10P
C23A
@C1

10P
300V
300V
10P
C23B
@C1 Q14B
BC560

Q12A
Q12B
MPSA42
@Q3
MPSA92
@Q4
Q13B
R45B
B

E

MS3

MW3

+100
RED
B
E

MS1
1 MW1

J28
TIP50

RED
HS6PART#
@Q2
Q16A

@Q1
Q15A

2

C10
C17

U3
U2

MJE5730

MPSA92
@Q5
10K0
R45

R130
100K
RV1
47U
10V

J29

MS2

TP4

FACE
DOWN
@Q1
Q15B

@Q2
Q16B

10K0
J25

Q38
MJE5730

FACE
DOWN
TIP50

R13
TP3
250V
220N
C43

"210.
"800.
"500.

M1011A

MW2
RV2
@U1

Q11
100K

82K5
63V
10K0
2U2
R42 100K
C14
RV3 R43
82K5
10V
47U

R41

33078

R127
R128

@Q6 Q36
2N5551
BC550
Q37

2

63V
4U7
RV4
100K
C5
2U2
63V

Q7

@R4

15R
R37

3
BC550

TJH2

BC550
BC550
BC550

Q9

A63
Q10
BC550

J5
Q4

MS4

BC560
Q1
BC560

Q3
Q2

Q6
Q8
100N
J23
A63

@R6

C16

C28

C6

Q28

Q5

C15
330R
1/4W
R99

@R6

A13
10u
16V

_MW4
1

16V
10u

R98
1/4W
330R
A63

BC550

L+M
L-M
R+M
R-M
+18M
NC
NC
-18M
P2
P1

"020.

VCD
BLANK SIZE=16.000"X11.050"
SOLDERSIDE M1011-5.10

BLK
WIRE

@10R

100N
820R
4148

5K36

4148
4V7

1K5

4148

270R
R125
330R
R36

R124
C11

R25

D7

D46 AZ
HOLE RE1

C31

R97
D36

R31

#3699

47K

ASSEMBLY
PCB MECH
BLK WIRE
@R14

@ZD1

3K

D48
1N4004

TP9

10K
R126

C52
10V

B

R44

4K7
220K
10K
1M
R129

E

10K0

C3

1
_MW3

100N

82K5

FUNCTION
BF872

PART#

FUNCTION
C42
250V
220N
R26
R27

R38
C29
82K5
10K0
J13

R32

R6

R5

R8

R11

R7

J20
J21

J11

R28

R39
R40

J16
J18
249R
J19

249R
J22

47K

3K
47K
3K

C32
R18
270R
45K3

16V
1U

R131
1K5

J4

J6

1N4004

1K5
J7

J8
J9

D12
D11

R12

R96

C27

R14

47K

C26

R34

J10

113K0

10K0

R21

@R2

16V
1U
@R2

113K0
10K0
220P
C23

R100
R54A

R33

4148
4148

10K0

10K0
100N

33078
@U1

10K0
220P
100K
249R
J26

C9

D5

D49
R132

R63A

E

B

10R

F
RED
F
R106
FUNCTION
BDX53C

PART#

HS1

4148

39R

PART#

J3

PART#

D19A

@R5

4148

@R5

@R8

4K7
4K7

4K7
4K7
1K5
39R

PART#

MJE340
4148

220K
2_WATT

F
YELL
F

J1

25V
100U

D23A

F
F

BLK

C49

4148

E

R66A
10R

F
F

WHT

FUNCTION

PART#

BDX54C

B

20V

F
F

BLUE

ZD8

47R @R9
R62A
4148
D21A
4148
D20A
4148
D22A
47R @R9 R61A
@R11 33K
R67A
10R
R65A
68K @R12
10R
R59A
R68A
C25A
150R @R7 R57A
220K
150R @R7 R64A
2WATT @R8
R49A
470R
R60A
R53A
33K @R11
470R
R69A
68K @R12 R70A
C21A
NJM431
Q14A
2V5
Q21A
4148

1K5
4148
4148

17K8
1K
1K
4148

R41A
7K5

22U
16V

7K5
R39A
22U
16V
16V
22U

R51A

300V
D17A

D18A
D16A
R56A
R45A
R44A
D13A

_MW2
1

C19A

1K
1K
4148D16B

1K5
R51B

4148

D18B

17K8

4148

7K5

7K5

1_MW1 16V
C19B 22U

R44B

R41B
D13B

R39B

D51

D50

R55A
21K5

R35

21K5

R55B

FUNCTION

4148

1K5

R15 HS2
@C1 300V
C22A
10P
R58A
39R
R47A
R16
R46A
R20
R50A

J24
100K
47K

249R

R54B

R50B
R46B
R47B
R58B

HS3
PT#4790
R60B

MJE340

M1011-5.13
M1011-5.13
C1

47K

ZD17

NO NC
C
AROMAT_RELAY
48V_COIL

220K
470K

U1

R24
R23

R29
3K

@U1

1K
1K

C12

R1

47P

47P

BAV21

4148

5K36

R3
R4
R2

27P

33078

J17

17K8

4148
D8

TP2

@R1

16V
10u
17K8
1K
1K
4148

TP1
C2
47P
D1
4148

47P

220K
R10
R19
R17

4148

MJE350

0.5W

@R1

16V
10u

27P

NOTE RELAY HAS 48V COIL
+
GRN
LD6
+
RED
-LD5
C13
R30
D10
D9
ZD2
Q29
@R13

C25
J15
R22
+
RED
LD2 +
GRN
LD4 -

-18
NC
NC
+18
RR+
LL+
D2

ZD1
R9

D4

C4

270R

D6

D19B
R63B

39R

10V
C26B
4U7

D22B

4148

D17B

33K
68K
Q20B

4148

4148

47R
R61B

BC560
1K5

C18A
C18B

R68B
C25B

R67B
@R11

@R9

4U7
10V

@R12

@R9

1K5
3K
22N
4148
4148

7K5
7K5
220R

220R
7K5
7K5
4148
4148

22N
3K
1K5

1K5

470R
10R
10R
470R
150R
150R

R48A

@R7
@R7

R53B
R64B
R57B

R65B

R59B

R49B

R48B

C24B

R43B
R52B

C20B

D15B

D14B

R42B

R38B

R40B

R40A

R38A

R42A

C20A
D15A
D14A

R52A
R43A

C24A

PT#4400
25A10K

PT#4400
25A10K

4V7

820R
LD1
4148

LD3
100N

4148

J27

47R
R62B

4.51
.
4.52
4.52
4.53
5.00
5.10
5.11
5.12
5.13
V
AUG/06/93
.
JAN/18/94
FEB/94
JUN/22/94
NOV/29/94
FEB/15/95
APR/08/97
OCT/27/97
AUG/05/98
D
1
2
3
4
5
6
7
8
9
10
11
PC#4529_BD651->BDX53C_BD652->BDX54C
PC4651_LED’S->NJM431+2_RESISTORS
Q14A/Q21A_MOVED_TO_AID_RAD_INSERT
PC#5497_R66A/B_1/8WFP->1/4WFP
N
N
N
N
N
N
N
4.53
5.00
5.10
5.12
V
V
V
V
V
V
V
JUN/22/94
NOV/29/94
FEB/15/95
OCT/27/97
D
D
D
D
D
D
D

D35

M1011A
AP-3400
VER 5.12

4148

C29B

AP-3400
VER# DESCRIPTION OF CHANGE
MODEL(S):# DATE

AP-3000
VER# DESCRIPTION OF CHANGE

1
2
3
4
5
6
7
8
9
10
11

BAV21

470K
R101

D21B
D23B

4148

10R
R66B

PC#4443_R17,R18_470R->270R
R19_51K->43K
PC#4533_R19_43K->45K3
PC#4545_R1/R22_6K2->5K36
PC#4529_BD651->BDX53C_BD652->BDX54C
PC#4651_LED’S->NJM431+2_RESISTORS
Q14A/Q21A_MOVED_TO_AID_INSERTION
PC#5353_R60A/B->2_WATT
PC#5497_R66A/B_1/8WFP->1/4WFP
PC#5528_Q16 A,B REPLACE WITH TIP50#6891
N

PRODUCTION NOTES
1 RV2,RV4 TO BE HAND
INSERTED C3 1U 16V
TO BE HAND INSERTED
MODEL(S):# DATE

C28B
C27B

M1011A.PCB_DATABASE_HISTORY

-100

10V
22U
22U
10V

ETCH
GUIDE

R103

C28A
@C2

EY4
22U
10V

C29A

BC550

R69B
33K
16V
2V5
NJM431
330U
TJH1
Q21B
R70B @R12 68K

+
RED
+
GRN
-

D3
4148

PART#

ETCH
GUIDE

@R11

C21B
10U
160V

Q20A
2V5
NJM431

Q17A
BC550 Q17B

R56B

10V
4U7

NJM431

TP6

10V
22U

160V
10U

M1011.PCB_DATABASE_HISTORY

EY2

EY1
0.5W

@R3

EY3
R105
1K
15K

-55
EY5

EY6

WHT
330U
16V

EY9 EY8

10R

EY7

HS5

BLK
EY10

BLUE

Q31
10U
160V
160V
10U

0.5WZD7
@R3

R102
EY17
R107
C48
25V
100U

EY13 EY12

EY11

GND
BLKL
15K
2V5

J14

@C1 C22B
10P
300V
300V
10P
C23B
@C1
Q14BBC560
D20B

C27A
@C2

@C2
@C2

B

TP5

1K
R104

20V

+55
YELL
Q30
@Q4
MPSA92

C26A
4U7
10V

EY14
EY16 EY15
Q13A

@Q3
MPSA42
Q18B
Q19B

B
E

2
Q16B

10P
C23A
@C1

B
E
B
E

@Q2
@Q1

Q19A
Q18A

+100
RED
HS6PART#
Q16A
Q15A
Q12A
Q12B
MPSA42
@Q3
MPSA92
@Q4
Q13B
R45B
E

FACE
DOWN

R128

1
J28
TIP50

MJE5730

J29
@Q1
Q15B

@Q2

C17

FACE
DOWN

Q38
MJE5730
TIP50

C10
10K0
R45

U2

RV2

MPSA92
@Q5
U3
47U
10V

33078

63V
4U7

@R4

15R
R37

R130
100K
RV1

@U1

Q11
100K
C14
TP4
10V
47U

R13
10K0

M1011A
BLANK SIZE=16.000"X11.050"
P:\1011APRT.PRN

J25

Q9

@Q6 Q36
2N5551
BC550
Q37

2
R42
63V
2U2
TP3

Q7

R127
82K5
10K0
100K
RV3 R43
82K5
C43

BC550

RV4
100K
R41
C5
2U2
63V
250V
220N

BC550

3
BC550

BC550
BC550

A63
Q10
Q1
BC560

J5
Q4

TJH2

Q2

BC560

Q6
Q8
Q5

BC550
C28

C6
100N
J23
A63

@R6

C16

_MW4

C15

A13

10u
16V
1

@R6

330R
1/4W
R99

Q28

P1

R98
1/4W
330R
A63

Q3

L+M
L-M
R+M
R-M
+18M
NC
NC
-18M
P2
16V
10u

GUIDE
ETCH

MJE350

+4dB 55Hz
FILTER
S1

-1dB 30Hz

RIGHT = CHAN B
C1
470p

JB1
2
BAL_IN
3
NUTRIX 1
R1
1K

C2
470p
R2
10K:1%

JB2 1 3 5
IN = MONO
S2 S2
1

4

OUT

CH_A_IN

S

R

T

2

5

3

6

1K
R20

LEFT = CHAN A
GREEN WIRE TO
GROUND STRAP:
WC1
GND

2

1

3

U3
1/2

5532
R18
1K5

20KHz

C10
16v
6n8

+2dB

+18

IN

JB3 1 3 5

JB4
2
BAL_IN
3
NUTRIX 1

7
5

+4dB 55Hz
FILTER

OUT

IN

6

R23
1K

10K:1%
R21
C11
470p
C12
470p

R24
10K:1%

MUST BE BREAK BEFORE MAKE, #3436
C13
C17
R33
100p
16v 470n
17K8:1%
R32
C15
16v 68n
4M7
14K0:1%
33078
R27
R28
R29
1/2
R22
C18
C19
10K:1% 17K8:1% 17K8:1% 3 U2
6
16v 150n
1 16v 47n
7
C16
2
16v
5 U2
R35
100n
1/2
82K5:1%
2
R30
R31
33078
5K6
7K5
R25
R26
14K0:1% 1R
C22
TO PIN 4 OF 5532
100n
C14
100p
DATE: SEP/19/94

GND

YORKVILLE NAME: M1012A.SCH

6

NO_GOLD 2 4 6

-1dB 30Hz

R16
470R

IN

NO_GOLD 2 4 6

5

T

4

R

S1

S

OUT

CH_B_IN

MUST BE BREAK BEFORE MAKE, #3436
R15
C3
C7
100p
16v 470n
17K8:1%
R14
C5
14K0:1%
16v 68n
4M7
33078
R7
R9
R10
R11
1/2
C8
C9
10K:1% 17K8:1% 17K8:1% 5 U1
2
16v
47n
16v
150n
7
1
C6
6
16v
3 U1
R17
100n
1/2
82K5:1%
1
R12
R13
33078
R3
R4
5K6
7K5
14K0:1%
1R
C21
TO PIN 4 OF 5532
100n
C4
100p
IN

10K:1%
R6

OUT

1K
R5

MODELS: AUDIO-PRO
AP-3400
PCB#&VER: M1012-2.00

R34
470R
2
1
3

-18

T8
T7
T6
T5
T4
C23 T3
100n T2
T1

SIG_L
REF_L
SIG_R
REF_R
+18
GND
-18

C24
100n

U3
1/2

5532
R36
1K5
C20
16v
6n8

20KHz
+2dB
GND
EY2
18Ga BLACK WIRE
TO M1011 GND

SCH ISSUE: 0.00
TITLE: INPUT_&_FILTER

5

ASSEMBLY
PCB MECH

M1012-2.10 BLANK SIZE=15.700"X10.000"
M1012-2.00
GREY_BUTTON
SHEAR
"
0
0
0
.
0
1
X
"
0
0
7
.
5
1
=
E
Z
I
S
K
N
A
L
B
GREY_BUTTON
B_BAL_INPUT

5

15

SHEAR

5

A_BAL_INPUT

15

BUT2

SHEAR

VCD

59

52

52

52

"520.
030.
LINEWIDTH "
"GAUGE
040.
"050.
"060.

59

40

J12
J11

52

52

52

52

R26

C22
100N

R24

R25

10K0

10K0

14K0

100P

@R1

C14

40

40

40

10K0

40

40

40

33078@U1
40

40

40

U2

40

40

40

40

40

40

40

40

40

40

40

40

40

R30
128

TJH2

AP-3400
LLIM1012A
RD
SHEAR

00.2-2101M EDISREDLOS

00.2-2101M LTED

J13

40
40

40

C16

52

C12

470P

100P

@R1
40

R29

52

1R

C11
470P

1K
1K

R23
C17
470N
40

47N

TP2
J14

30

30

30

30

C20

52

40

40

52

40

100N

59

40

17K8

59

40

C13

R27

82

MC1GRN
FUNCTION

59

40

40

5K6

59

40

7K5

59

40

68N

100N

59

40

52

C24

82

16AWG

40

6N8

40

4M7

R32

30

30

30

MONO

40

40

40

40

100N

52

R35
R34

6N8

C10

30

30

30

C8

30

J2
J1

40
52

J10
WC2 WC1J9
BLK 13"
16AWG
40

40

R21

R31

40

J3

40

J19

40

52

40

40

40

J15

40

40

40

17K8

40

40

C15

R13

J4

40

40

R22

C18

U3

40

14K0

R36 R33

150N

40

52

40

40

J16
30

40

40

40

40

R28

R12
5

40

40

40

40

52

J17

2101M

40

R10

40

4

15

30

40

40

30

30

40

52

SIG_L
REF_L
SIG_R
REF_R
+18V
GND
GND
-18V

40

40

40

40

40

52

40

40
52

C23

17K8

7K5

5K6

100N

40

40

17K8

1

40

40

40

C6

40

40

52

40

68N

15

R11
40

TP1

2101M
00.2

40

R9

40

47N

10K0

@U1
40

C5

SHEAR

33078
40

4M7
40

40

U1

R14

470N

14K0
40

40

52

40

40

40

40

98’TPES

40

40

J18

M1012A
AP-3400
VER.
02.12.10

C4
40

40

J5

40
40

40
40

52

40

40

JB3

47

40

40

52

R20

30

40

40

40

52

40

40

30

C19

52

47

59

42

52

5532

40

40

82K5

40

R7

40

40

C3

40

40

J6

C9
R17

99

47

40

40

52

59

40

47

52

52

@R1

100P

10K0

14K0
@R1

10K0

1R

100P

40

52

40

40

42

52

470R

40

42

1K5

40

47

30

40

C7

40

40

R4

40

47

R15

J7

R2
R3
R6
40

47

R18
R16

40

52

30

1K
40

42

47

J8

30

470P
40

00.2

30

470P
40

2101MS2

JB2

1K

100N
40

30

40

40

47

30

C2
C1
R1
R5
40

40

PART#

59

59

#3436

40

UNBAL_IN_B

52

1K5

59

PT#3660

16

S1

17K8

59

16

59

#3436

150N

47

40

59

52

17K8

52

C21

AZ HOLE

59

99

TJH1

16

BUT1

470R

128

59

BASS_BOOST

SWITCH/S
ARE #3436
BREAK
BEFORE
MAKE!!!!

59

30

16

UNBAL_IN_A

59

30

16

82K5

16

30

16

30

16

4

PT#3660

15

5

MJH11018

TB2

3

1

C44
80V
330u

4

2

C45
80V
330u

EY11 GREY
RED
RED

EY6 YELLOW
EY5 YELLOW

13AMP
DB2

EY10 BLUE
EY9 BLUE

3

1

C46
80V
330u

4

2

C47
80V
330u

EY12 WHITE

CSA

+78

WC1

GND

YELLOW
BLACK
BLACK

GND

C55 4n7

WC4

-78

WHITE

WC7

-145

BLUE

MPSA06
2N5551

EBC
B CE

C53
22n
GND

+78

+78

1N4004
D43

1N4004
D42

WC10

GREEN WHITE
CHASSIS
120 VAC 60 Hz LINE

AT 25~ AMBIENT:
11 A = 33K
13 A = 15K

R108
47K

SENSOR:
100K @ 25~
50K @ 40~
25K @ 55~
10K @ 80~

D37
D46

UNDER CAP:
L1

220uA
530uA
RMS IN
RV5
47K
100K R109

GROUND
STRAP

TO WC1 ON M1012

R114
1.2M

R116
27K

ZD12
500mW
33V
R110
14K0:1%

13.5v
Q32 10.7v
15.6v
IDLE
RV6 2N5551
100K
17K8:1%
AMBIENT
R111

7
28v @ 80~
33v
500mW
ZD15

R118
22K

4v7
500mW
ZD10

68K 68K
R113 R112

R117
15K
D41

D38

D47

R124
1K

D39

C50
25v
22n

D48

4v7
500mW
ZD11
25v

GND

1 AUG/12/97
2 D
3 D
4 D
5 D
6 D
7 D
8 D
9 D
10 D

1.40
V
V
V
V
V
V
V
V
V

PC#5444_R120->122_1/4W->1/2W
N
N
N
N
N
N
N
N
N

TO M1011A: MC1
+18
1
MC1
LTSENSE
2
MC1
RTSENSE
3
MC1
RMS
4
MC1
KILL
5

GND

ABOUT
5 WATTS
Q35

Q34
2N5551
R119
220R
4v7
500mW
ZD14

Q33
A06
D40

R123
7K5

M1013A.SCH_DATABASE_HISTORY

D44
1N4004

ZD13
500mW
33V

R115
27K

GND

MODEL(S):- AP3400
# DATE
VER# DESCRIPTION OF CHANGE

D45
1N4004

MJH11018

8
0.5W

BLACK

R120
2R2

R121
2R2

0.5W

CSA

WC8

RED

WC6

13AMP

EY2

+145

0.5W

EY8
EY7

WC3

HIGH CURRENT TO M1011A

DB1

TR1
WC11
EY3 BLK
TYPE_H
1KVA
120VAC
YSL#
CSA
UI
C54 22n
EY4 BLK
12A/SW

TB1

13A/85C

R122
2R2

C51
470u

EY13
40CFM

EY14

FAN

NOTE: CAPACITOR VOLTAGE RATINGS SHOWN ARE MINIMUM REQUIRED.
ACTUAL PARTS MAY HAVE HIGHER VOLTAGE RATINGS.
ALL UNMARKED DIODES ARE 1N4148.

DATE: AUG/12/97

YORKVILLE NAME: M1013A.SCH

MODELS: AP-3400
PCB#&VER: M1013A

SCH ISSUE: 1.40
TITLE: SUPPLY/FAN_PCB

WC11
EY3

ORANGE WIRE TO
EY3 FOR 240V
GREEN WIRE TO
EY3 FOR 220V
TR1
240V ORN
220V

DB1

EY8
EY7

GRN

3

1

C44
80V
330u

4

2

C45
80V
330u

EY11 GREY
RED
RED

EY6 YELLOW
EY5 YELLOW

TB1

8A/SW

C54 22n
CSA EY4

13AMP
DB2

220/240VAC
YSL#1288E

EY10 BLUE
EY9 BLUE

BRN

3

1

C46
80V
330u

4

2

C47
80V
330u

EY12 WHITE

CSA

WC8

+78

WC1

GND

RED

YELLOW
BLACK
BLACK

GND

13AMP

CSA

+145

WC6

C55 4n7
EY2

WC3

WC4

-78

WHITE

WC7

-145

BLUE

HIGH CURRENT TO M1011A

TB2
13A/85C

C53
22n
+78

GND

+78

1N4004
D43

1N4004
D42

BRN
GRN/YEL
BLU

AT 25~ AMBIENT:
11 A = 33K
13 A = 15K

CHASSIS

BROWN
GRN/YEL
BLUE

AC LINE FILTER

WC10
R108
47K

SENSOR:
100K @ 25~
50K @ 40~
25K @ 55~
10K @ 80~

D37
D46

220uA
530uA

UNDER CAP:
L1

R110
14K0:1%

Q32 10.7v
13.5v
15.6v
IDLE
RV6 2N5551
100K
17K8:1%
R111
AMBIENT

GROUND
STRAP

R116
27K

ZD13
500mW
33V

R115
27K

7
28v @ 80~
33v
500mW
ZD15

R118
22K

4v7
500mW
ZD10

68K 68K
R113 R112

R117
15K
D41

D38

D47

R124
1K

D39

D40

R123
7K5

MJH11018

C50
25v
22n

LTSENSE
RTSENSE
RMS

EBC

KILL

B CE

GND

MC1
1
MC1
2
MC1
3
MC1
4
MC1
5

1 SEPT/28/95
2 D
3 D
4 D
5 D
6 D
7 D
8 D
9 D
10 D

1.40
V
V
V
V
V
V
V
V
V

PC#4883 ADDED EMI AC LINE FILTER
N
N
N
N
N
N
N
N
N

11
12
13
14
15
16
17
18
19
20
21
22
23
24
25

V

N

C51
470u

EY13
40CFM

EY14

NOTE: CAPACITOR VOLTAGE RATINGS SHOWN ARE MINIMUM REQUIRED.
ACTUAL PARTS MAY HAVE HIGHER VOLTAGE RATINGS.
ALL UNMARKED DIODES ARE 1N4148.

DATE: SEP/28/95

M1013AE.SCH_DATABASE_HISTORY

8

FAN

YORKVILLE NAME: M1013AE.SCH

MODEL(S):- AP-3400E
# DATE
VER# DESCRIPTION OF CHANGE

MJH11018

R120 R121 R122
2R2 2R2 2R2

4v7
500mW
ZD11

GND
TO M1011A:
+18

ABOUT
5 WATTS
Q35

D48

25v

MPSA06
2N5551

Q34
2N5551
R119
220R
4v7
500mW
ZD14

Q33
A06

GND

TO WC1 ON M1012

D44
1N4004

ZD12
500mW
33V

RMS IN
RV5
47K
100K R109

220/240 VAC 50 Hz LINE

R114
1.2M

D45
1N4004

MODELS: AP-3400E
PCB#&VER: M1013A-2.20

SCH ISSUE: 1.40
TITLE: SUPPLY/FAN_PCB

MC1
@R1

68K
17K8
68K

#3743

Q33
A06
4V7
ZD10
4148
D40
4148
D48
2R2_1/2W R120

TP7

4V7
@R2

27K
4148

2R2_1/2W

33V

2M5551

27K
4148

Q34
@Q1

R122

TP8
2R2_1/2W
15K
22K
220R

R121
R117
R118
R119
ZD14
ZD13

4V7
33V

J1

J2

33V

C51

J3

@R2

FAN_CTRL

KBPC3506-W

D42
D45

ASSEMBLY
PCB MECH

M1013-2.30
M1013-2.30

1N4004
1N4004
1N4004

EY13

B Q35

MJH11018

SHEAR

EY7

D44

E

1N4004

EY14

D43

AP-3400

TJH1

2M5551
1K
R124

4148
4148

ZD12

LEADS UP

TP9

1M2

BLU
03.2 -3101M
LAY DOWN

BLU
EY8

RED RED

YELLOW

EY5

J24

EY10

@Q1
Q32

14K0
4148

22N
C50

EY9

330U

VCD

SHEAR

+18
L T-SEN
R T-SEN
RMS
KILL

WHITE

LEADS UP

KBPC3506-W

EY11

GREY
J21

J22

EY12

R110
D37
R114
D38
D39
R112
R111
R113
ZD11
R115
D47
ZD15
R116
D41

7K5
R123

J25

@C1 80V

4148

47K

470U
63V

DUMMY

#6477

RV6
100K

X-F,BLACK

EY4

LAY DOWN
AC-WHITE

AP-3400

J23

R109
47K
D46

M1013A

C47

LAY DOWN

EY6
330U

M1013A

FUNCTION

R108

EY2

L1

#3822
C45

C44

DUMMY

#3743
SPARE
WC11
X-F,BLACK
22N
250V
C53

TJH2

J20
330U

C46

YEL

LAY DOWN

BLK
BLK

M1013A

@C1 80V

@C1 80V

LAY DOWN

SHEAR

EY3

C54

22N
250V
WC4 WC6
WC7

C55

WC10 4N7
250V
WC3

330U

WC1

WC8

@C1 80V

REPPOC ZO 2

"210.
"800.
"500.

RV5
100K
#6477

YELLOW

BLANK SIZE=12.600"X6.500"
SIX WIRES 16AWG
#3743 12" 12"
11" 11" 11" 11"
WHT
RED

GRN
18AWG
10.5" 8_1/2"BLK_DBL/INS

GUIDE
ETCH

T-BRK

BLU

SHEAR "005.6X"006.21=EZIS KNALB

SHEAR

"020.

FAN- FAN03.2-3101M LTED LLIRD

SHEAR

"020.

GUIDE
ETCH

"210.
"800.
"500.

M1013.PCB_DATABASE_HISTORY
MODEL(S):- AP-3000
# DATE
VER# DESCRIPTION OF CHANGE

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

JUN/23/94
.
SEP/20/94
NOV/24/95
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D

2.21
.
2.21
2.30
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V

PC#4529
.
PC#4576
PC#49**
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N

R115,R116 22K TO 27K - ZD13 20V TO 33V
WC11 WIRE DBL INSULATED
ADD EXTRA EYELETS FOR
EURO XFMR 245/230V

M1013A.PCB_DATABASE_HISTORY
MODEL(S):- AP-3400
# DATE
VER# DESCRIPTION OF CHANGE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

SHEAR 03.2-3101M EDISREDLOS

MAY/26/94
SEP/20/94
NOV/24/95
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D

2.20
2.21
2.30
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V

PC#4609
PC#4576
PC#49**
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N

BD651 TO BDX53C
WC11 WIRE DBL INSULATED
ADD EXTRA EYELETS FOR
EURO XFMR 245/230V

"500.
"800.
ETCH
"210.
GUIDE
"020.

SHEAR

P:\1002APRT.PRN

M1002A

AP-3400

Q19

YS#6900
.

D15
MR854

1

R53

YS#6900
.

MR854

Q14

Q20

5WATT
0R1

5WATT
0R1

D22

MR854

Q18

MR854

R60

D14

MR854

D12

R58

D13

YS#6900
.

YS#6900
.

MR854

2

R56

Q16

Q13

YS#6900
.

5WATT
0R1

Q15

5WATT
0R15

YS#6900
.

D21

Q17

_WC7

YS6900
.

YS#6900
.

BC550

WC6

R61
MR854

RV1

Q21

YS#6927
.

J18
R3

R4

RT1

2R2

VBE
2R2
4K7

22R
22N
4V7/1W
ZD10
4148
D4
0.R47
1W
R79
4148
D3
J16
470R
249R
39R
R43 R14
R12
39R
J2

4K7

39R

TP1

68R

J3

R1

TP9
R2

220R0
R51
2R2

2R2

D9

27K
1K
R38
R40

R11

R41

C7

R27

J4

330U
16V

22N
C27

R35
1K
R34
270R
R26
470R
BC550
22N
Q9
C12
R50
270R

3V

3K

12V

R10

R9

C13

22N
C26

16V
330U

R39
D10

91K

J17

D1

4148

4148

TP2

@R3

TP4
J15

C6

4004

BC550 MPSA42

R8
R7
C2
D2

R6

R5

Q7

18K
4K7

R24

@R2

BAV21

R40A
20K

12V

3K
18V
220K
R25
3V
R22
ZD7

4148

10V
C5 C3

2N6517
Q34

ZD1

16V

J19
10K0
15K
150R
1N

10V R13 22U

249R

36K

D5

C8
D28

4148

Q3

ZD4
ZD3
R20

249R
R18
10K0
249R
R19
R42
4K7

BC550
4148

D25

Q33

C17

Q4

22U

R70
Q32 R23

470P
150R
15K
C4
R15
R16
D7

27K

4148

@R3

BAV21

MPSA92 R76

M1002-9.00
M1002-9.00

@Q2

R33

SS

1R
1W_FP

GG

@Q1

4148

TP7

R35A
20K
R37

D11

TO M1011
ASSEMBLY
PCB MECH

100N

-145V

Q8

2U2
10V
2N5551

D27

-78V

TAB5

8K2

TAB3

TAB4

RED WIRE

470K
10N C18
150K
R75
R74
150K
4004
D24
R73
100K

4148

TAB2

GND

@C3

SS

D23

@R6

2K2

Q31

+78V

+145V
TAB1

@C3

J9
J22

@C3

@Q1

47R
R49A
1/2W
1/4WATT
2R2
16V
R72 @R6 47R
1/4WATT R49B
1/2W J21
2R2 @R1
ZD2
R17 BC550 BC560
R71

R77

C11 C14

FUNCTION

MC1

R21
91K

PART#

R36

J12

R46
220N
250V
220N
250V

#5892

80V

6800U

#5892

470K

J7
J8

80V

6800U

#5892

80V

6800U

#5892

80V

6800U

@C3

R48 J20
39R

470P

C16
R44

R47

1R
0.5W

ZD9

3K6

TP6
R78

BLUE
WIRE

S

39R

16V/1W

G

2N2

5WATT #5427

3K6

39R

GG

R49
0.R47
1WATT

@Q1

R45AQ12

500V
C15

@R5

R32

16V/1W

3K6

C25

MTP2P50E

TP5

47R
680P

3K6

5WATT

#5427

C9

C24

MR854

MTW10N40E
MTP2P50E

1K

C23

500V
2N2

4uH

MR854

D20

3
R6

5R6
5WATT

L1

R65 R64

33K

R62

7"YEL
16AWG

1R
0.5W

C22

TP10

2WATT
3R9

WC7

R28

15K
0.5W

C19

S

ZD8

R67

10N
250V

C10

M1002A
AP-3400
VER. 9.10

5.5"BLK
16AWG

WC6

C21

G

Q5

@Q3

MTP8P20

Q11 R45

@R5

@R4

15K
0.5W

MBS4992

R31

MTP10N15L

1K2

R66

Q29

R29A

R29

R30

R69
R68

15K
0.5W

16V
10U

OUTPUT
+

J5
J6

@R4

@R4

15K
0.5W

10R

MAC224-4
DC_PROT
TRIAC
@R4

OUTPUT
TAB7

Q30

TAB6

Q6B

220K
ZD6
ZD5

Q27

HOLE
J10
J11

AUTO ADJUST

Q25Q6A

.
YS#6927

1N5

.
YS#6927

NOTE #6

D16

C1

3

Q23
.
YS#6927

MR854

D18

J1

D17

BC560

MR854

D19

100K

MR854

Q2

R52

R59

R55 Q10
BC560
220R0

R57

YS#6927
.

1

Q1

5WATT
0R15

YS#6927
.

YS#6927

YS#6927

5WATT
0R1

.

Q22

@R1

.

Q24

Q26

5WATT
0R1

5WATT
0R1

Q28

TP8

D26

BLANK SIZE=14.750"X8.850"

¢

Testing Repaired Circuit Board
Now that you have rebuilt the M1002 or M1002A circuit board. It is just as important to
properly power up the board. If the sinewave doesn’t look right check the signal at test
point (1) on M1002 to ensure that the voltage amplifier on board M1011 or M1011A isn’t
distorting the signal. If there is still a damaged part on the board instantly turning it on
could blow up the board and you would be back where you started.
The best method is to connect the test connector shown in figure 3 to the 5 pin molex
connector MC1 and connect the power wires and ground to the power supply.
Connect a digital multimeter to test pins 8 and 9 to measure the bias quiescent current and
place a scope probe on the speaker output. Be sure to turn the quiescent current trimpot
RT1 fully counter clockwise.
Now using a variac slowly turn up the AC main voltage while monitoring the quiescent
voltage and the speaker output trace on the scope. Watching these two test points is a
good indicator of the health of the board. If you have a second multimeter connect it up
from the speaker output to test point 4 or 5. As you variac up also check these DC battery
voltages to ensure that they both increase in voltage to approximately +14 or –14 vdc.
If the board looks OK after variacing up to 120vac then slowly turn up the bias (RT1
trimpot) to obtain 3 to 5 millivolts of bias voltage on test points 8 and 9.
Now power down the board; connect MC1 to circuit board M1011 and variac up the
whole amplifier. Check the speaker output with a 1KHZ sinewave with no load. If this
looks good place the minimum rated load (4 ohm for M1002A, 2 ohm for M1002) on the
speaker output and increase the sinewave amplitude to the point of clipping. If the signal
looks free of oscillation, place a short across the speaker posts. The amplifier should go
into protect mode after 1/10 of a second. Remove the short and the sinewave will appear
6 seconds later.
Reassemble the complete amplifier and run just clipping music or pink noise into the
minimum rated speaker load for that model of amplifier. Let the amplifier heat up for 20
minutes. This will check the thermal mounting of the transistors and for any weak parts
not caught during troubleshooting.
If the amplifier passes this test the product is ready to return to the customer.

Figure 3.

See details of figure 3 in service manual.

YORKVILLE SOUND

AP3000 AND AP3400 SERVICE
Quick Fix for M1002 and M1002A
To speed up the servicing of the AP3000 or
AP3400 on your bench, Yorkville Sound’s service
department has developed a method to replace the
components most likely to fail when a M1002/A
amplifier board requires service.
This Quick Fix kit contains the procedure,
assembly drawings, and components to perform
the Quick Fix to a M1002 or M1002A board.
It should be understood that the person using
this procedure knows how to test resistors, diodes,
and transistors to determine if they are defective.
This procedure is not intended to be a substitute
for one’s lack of electronic capability.
Before starting, look at the board for repair
and locate the version number. It is very
important that you follow the procedure for the
appropriate circuit board version number.
A complimentary service manual for the
AP3000 power amplifier is supplied with this
M1002KIT.

STEP 1.

Locate the assembly drawing for the version number printed on
the M1002 or M1002A circuit board to be serviced.

2.

Remove all of the transistors coloured RED on the assembly drawing.

3.

Measure and remove any of the diodes coloured BLUE on the assembly
drawing that may be damaged. Replace a 1N4732A 1W 4V7 zener (#6459)
{These components already exist on version 9 and higher, add only in versions
9 and lower.] that may have been added to the component side of the board
along with a series 0.5 ohm resistor. Refer to figure 1.

Figure 1
4.

Rotate the trim pot RT1 fully counter - clockwise as in figure 2. Inspect and
replace any resistors that look burnt. Measure all of the resistor values
coloured YELLOW on the assembly drawing. The value that you measure
may not be exactly what is shown on the assembly drawing but if the resistor
doesn’t look damaged it should measure within + or – 5% of the printed value.

Figure 2

5.

Measure the resistor coloured GREEN. The measured value should measure
within + or – 5% value listed in the table below. Replace any resistor that
measured beyond the + or – 5% value listed in the table below.
Resistor
Number
R10

6.

Printed
Value
4K7

Correct
Measured Value
-5%
+5%
2K25 2K3 2K35

Measure across the pair of test points listed in the table below.
If the
measured value is not within + or – 10% of the value listed in the table then
replace the resistors shown in the table below.
Test
Points

Layout
Reference

Correct
Measured Value

A to A

TP2 to J19

-10%
+10%
15ohm 17 ohm 19 ohm

Replace
Resistors
R11, R12, R14

7.

Measure the resistors coloured ORANGE. Since the value of these resistors is
0.1 ohm, your ohmmeter will measure the higher series resistance of the test
leads if the resistor is OK. If the resistor is damaged your ohmmeter will read a
very high resistance (an open circuit). Replace any damaged resistors.

8.

Measure the output TO –3 transistors (Q13 to Q28) to determine if any are
damaged. Mark any damaged transistors with a marking pen.

9.

Replace any output transistors that you have marked as being damaged.
Replace any diodes that you have found to be damaged. Replace all of the red
transistors that were removed.

10. Inspect the traces on the circuit board for any that have ‘fused’ open or look
like they got very hot. Bridge and solder a piece of wire over any damaged
traces.

AFTER YOU HAVE REPLACED ALL OF THE NECESSARY
COMPONENTS INSPECT THE REPAIRED BOARD FOR ANY
MISSING PARTS, CORRECT VALUES IN THE CORRECT
POSITION AND THAT ALL COMPONENTS ARE SOLDERED.

M1002A

SHEAR

AP-3400

SHEAR

Q19

D13

CHECK

CHECK

R58

D14

MR854

YS#6900
.

R60

R53

D15

MR854

D22

MR854

MR854

1

5WATT
0R15

YS#6900
.

.
CHECK

Q14

5WATT
0R1

YS#6900

.
CHECK

Q20

5WATT
0R1

5WATT
0R1

YS#6900
Q16

Q18

YS6900
.
CHECK

CHECK

SHEAR

SHEAR

CHECK

2

R56

YS#6900
.

MR854

.
CHECK

Q13

D12

Q15

YS#6900
.

MR854

YS#6900

D21

Q17

_WC7

CHECK
R61
MR854

AUG/25/94
.
FEB/28/95
MAR/01/95
OCT/19/95
.
.
JAN/97
OCT/28/97
D
D
D
DEC/17/97
JAN/28/98
D
D
D
D
D
D

6.00 PC#4645 REPLACE EYELETS WITH TABS
PC#4650 ADD DON’T BLOW ME UP CIRCUIT
.
6.10 NTABS ADDED FOR SPKR OUTPUTS RTV HOLES MOVED TO
NACCOMODATE NEWER AND SMALLER FILTER CAPS
.
6.20 PC#4924 PAD SIZE FOR OUTPUT TRANSISTOR
NCOLLECTORS MADE LARGER TO ACCOMODATE
.
NROBOT ASSEMBLY. CHANGES TO TRACE ONLY
.
ADDED_ROUTING_AT_TP8-TP9
.
7.00 PC#5498 R55,R51 249R->220R0 R40A,R35A 470R->16K
.
V
R37,R38
8K2->16K,R36,R39 36K->68K R34,R50 249R
.
V
->270R
C26,C27 10u->22N,R52,R53 0R1->0R15
.
V
R11,12,14,33,49
TO FLAMEPROOF. CIRCUIT CHANGES
8.10 PC#5550_R40A/R35A_16K->13K
9.00 PC#5550_ADD_R79,ZD10_ACROSS_R11
N
V
N
V
N
V
N
V
N
V
N
V

6.00
.
.
6.10
.
6.20
.
V
7.00
.
.
.
8.00
9.00
.
9.10
.
V
V
V

8

R33

1R
1W_FP

R3

R4

J17

RT1

2R2

2R2
4K7

VBE
4K7

TP8

"058.8X"057.41=EZIS KNALB
BLANK SIZE=14.750"X8.850"

SHEAR

39R

R1

68R

TP1

C13

TP9

J3

Q10

R55BC560
220R0
220R0
R51
J1
C1 1N5 R2

2R2
R41

2R2

3V

22R
22N
4V7/1W
ZD10
4148 D4
0.R47
1W
4148 D3 R79
J16
470R
249R
39R
R43 R14
R12
39R
J2

27K
1K

D9

D1

@R3

C7

3K

12V

330U
16V

R27

R24

2N6517
Q34

22N
C27

R10

R9

J4
R35
1K
R34 270R
R26
470R
BC550
22N
Q9
C12
R50
270R

22N
C26

ZD4
ZD3
R20

R70
Q32 R23

C8
D28

D27

4148

12V

Q7

18K
4K7

100N D25

Q33

PC#4645 REPLACE EYELETS WITH TABS
PC#4650 ADD DON’T BLOW ME UP CIRCUIT
PC#4531 PT#6923 FROM MTP2P45 TO MTP2P50E
.TABS ADDED FOR SPKR OUTPUTS RTV HOLES MOVED TO
.ACCOMODATE NEWER AND SMALLER FILTER CAPS
PC#4924 PAD SIZE FOR OUTPUT TRANSISTOR
.COLLECTORS MADE LARGER TO ACCOMODATE
.
PC#5546 R55,R51 249R->220R0 R40A,R35A 470R->20K
.R37,R38 10K->27K,R36,R39 27K->91K R34,R50 249R
.->270R C26,C27 10u->22N,R52,R53 0R1->0R15
.R11,12,14,33,TO FLAMEPROOF. CIRCUIT CHANGES
PC#5546_R36,R39_1_END_78V->145V_
PC#5551_ADD_R79,ZD10_ACROSS_R11_R49
=2X_1R_1/4W_IN_PARALLEL_BY_HAND
PC#5656_R49_2X1R_1/4W->0.R47_1W_R79
1R/1W->0.R47/1W_ZD7_20V-18V
N
N
N

R40A
20K

TP4
J15

C6

4004

7

D2

C5 C3

R39
D10

BAV21

TP2

D23
J18

91K

@R2

R38
R40

22U
10V

S
ZD1

16V

4148

R13

10V
22U

R49
0.R47
1WATT

D

4148

36K

R22
3K
ZD7 18V
220K
220K
ZD6
R25
3V
ZD5
TP5

4K7

4148

Q3

16V
330U

2U2
10V
2N5551
4148

Q4

D5

MODEL(S):- AP-3400
# DATE
VER# DESCRIPTION OF CHANGE
AUG/25/94
.
.
FEB/28/95
MAR/01/95
OCT/19/95
D
D
DEC/09/97
.
.
.
DEC/08/97
JAN/28/98
.
MAR/12/98
.
D
D
D

@Q2

@Q1

C17 BC550 MPSA42
D26
MPSA92 R76
TO M1011
ASSEMBLY
M1002-9.00
SHEAR
PCB MECH
M1002-9.00
00.9-2001M EDISREDLOS

M1002A.PCB_DATABASE_HISTORY
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

S
S

R5
249R
J19
10K0
R6
R8
15K
R7
150R
C2
1N

249R
R18
10K0
249R
Q8

BC550

@R3

470K
10N C18
150K
R75
R74
150K
4004
D24
R73
100K

R19
R42

470P
150R
15K
C4
R15
R16
D7

4148

27K

BAV21

2K2
R77

FUNCTION
C11 C14
RED WIRE

S

4148

TP7

R35A
20K

D11
J12

MC1

R37

C16

470P

R48 J20
39R

R44

R47

1R
0.5W

ZD9

3K6

39R

16V/1W

500V
C15

PART#

BLUE
WIRE

R21
R36
91K

220N
250V
220N
250V

-145V

-78V

M1002.PCB_DATABASE_HISTORY

TAB5

470K

MR854

A

@Q1

G
S
G
S
G
S
G
S1/2W
R49A
R71 @R6 47R
1/4WATT
2R2
16V
R72 @R6 47R
@R1
J21
1/4WATT R49B
2R2 1/2W
ZD2
R17 BC550 BC560

4148

TAB4

VCD

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

5WATT#5427

R46
@C3

SHEAR

MODEL(S):- AP-3000
# DATE
VER# DESCRIPTION OF CHANGE

2N2

@R5

R78

#5892

6800U
80V

#5892
@C3

GND
TAB3

S

G
G
G
G

Q31

+78V
TAB2

+145V
TAB1

TP6

MTP2P50E

@Q1

8K2

@C3

3K6

7"YEL
16AWG

R45A
Q12 GG D

J9
J22

@C3

R32
39R

3K6

16V/1W

WC7

J7
J8

6800U
80V

#5892

80V

6800U

#5892

C25
6800U
80V

G

Q5

MTW10N40E
MTP2P50E
MTP8P20

SQ11

Q6B

@Q3

1K

C24

HOLE
J10
J11

AUTO ADJUST

47R
680P

C10

5WATT

3K6

MR854

4uH

C23

500V
D20
#5427
2N2 C9

R6

3

5R6
5WATT

L1

33K

R62

Q6A

R45

S

.
YS#6927

Q25

MTP10N15L

1R
0.5W

C22

R29A
R31

R28 ZD8

SHEAR

15K
0.5W

C19

1K2

R67
@R4

15K
0.5W

R65 R64

M1002A
AP-3400
VER. 9.10

TP10

2WATT
3R9

10N
250V

@R5

@R4

R66

WC6

C21

MBS4992

5.5"BLK
16AWG

CHECK

CHECK

G

R30

R69
R68

15K
0.5W

Q29

OUTPUT
16V
+
10U

J5
J6

@R4

15K
0.5W

10R

MAC224-4
DC_PROT
TRIAC
@R4

OUTPUT
TAB7

Q30

Q21

YS#6927
.

Q27
R29

D16

RV1

YS#6927

TAB6

MR854

D18

3

CHECK
.

NOTE #6

BC560

MR854

D19

D17

R52

R59

100K

MR854

Q2

CHECK

R11

R57

YS#6927

YS#6927
.

1

Q1

5WATT
0R15

YS#6927
.

YS#6927

CHECK
.

Q22

5WATT
0R1

5WATT
0R1

5WATT
0R1

CHECK
.

YS#6927

Q23

Q26

@R1

.
CHECK

Q24

Q28

BC550

WC6

R ED

W C3

YEL

WC8

W C1

B LK

B LK

W C6

W C4

BL U

WHT

W C7

WC1 0

C55
4N7
250V

C54
250V
22N

T - BR K
22N
250V
C53

C44

T JH 1

WC11
EY3

C46
L1

RV5
100K

EY2

EY6
C45

Y ELLO W
EY5

C47

SHOWN WIRED FOR
230V

EY4

A C-W HITE

Y ELLO W
RV6
100K

GR EY
EY11
EY8

EY7

RED

RE D

#1289
BLU
E Y12

W HIT E

EY9

EY10

BL U
EY13
FANFAN-

EY14

AP-3400CE XFMR WIRING
NOV 13. 95

R ED

W C3

YEL

WC8

W C1

B LK

B LK

W C6

W C4

BL U

WHT

W C7

WC1 0

C55
4N7
250V

C54
250V
22N

T - BR K
22N
250V
C53

C44

T JH 1

WC11
EY3

C46
L1

RV5
100K

EY2

EY6
C45

Y ELLO W
EY5

C47

SHOWN WIRED FOR
245V

EY4

A C-W HITE

Y ELLO W
RV6
100K

GR EY
EY11
EY8

EY7

RED

RE D

#1289
BLU
E Y12

W HIT E

EY9

EY10

BL U
EY13
FANFAN-

EY14

AP-3400CE XFMR WIRING
NOV 13. 95



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