Broadcast Electronics Dura Trak 90A Series Cartridge Machine Manual

User Manual: Broadcast Electronics Dura Trak 90A Series Cartridge Machine Manual

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PLAYBACK AUDIO PROCESSING CIRCUITSTO RECORD
LOGIC CIRCUIT
BOARD

71

pLEFT CHANNEL
OUTPUT AMPLIFIER

LOW FREQUENCY
CONTROL
R19

HIGH FREQUENCY
EQUALIZATION
CONTROL

+>-

LEFT CHANNEL
AMPLIFIER AND
EQUALIZATION
NETWORK

LEFT
CHANNEL I
AUDIO
INPUT

U20
AUDIO/MUTE
SELECTOR

V

,

RIGHT
CHANNEL
AUDIO
INPUT

A

HIGH FREQUENCY
EQUALIZATION
CONTROL

T

LEFT CHANNEL
I AUDIO OUTPUT

LEFT
MUTE
SWITCH

o '

LOW FREQUENCY
EQUALIZATION
CONTROL

->-

LEFT CHANNEL
OUTPUT LEVEL
CONTROL

-

I

R39

RIGHT
MUTE
SWITCH

RIGHT

CHANNEL

OUTPUT

LEVEL

CONTROL

PRIGHT
OUTPUT

AMPLIFIER

CONTROL
AMPLIFIER

RIGHT CHANNEL
AMPLIFIER AND
EQUALIZATION
NETWORK

^ Q M U T E
INVERTER

COMMAND

CONTROL LOGIC
MUTE
COMMAND

CHANNEL

FF
COMAND

MODE OF OPERATION

LOW

LOW

PLAYBACK AUDIO

LOW

HIGH

HIGH

HIGH

FAST FORWARD AUDIO
MUTE

/ nn

FAST

Y LHJ

COMMAND

- CUE TONE

CUE TONE
FILTER
CIRCUITS
USA
UOB
USB
U9A

TO RECORD
LOGIC CIRCUIT
BOARD

DETECTION CIRCUITS -

3000Hz CUE
TONE DETECTOR

xCUE AUDIO
" 7 OUTPUT

RIGHT CHANNEL
I AUDIO OUTPUT

FORWARD

UlSA

3 KHz CUE
LEVEL CONTROL
R78y.

PRIMARY CUE
TONE DETECTOR

1 KHz CUE
LEVEL CONTROL

'So—> TERTIAfY
U19D

_x 171 PRIMARY CUE
/ l±J TONE DETECTION

COMPARATOR

y^—
8 KHz CUE
LEVEL CONTROL

TERTIARY CUE
TONE DETECTOR
p

UUO
..UllE

UIOD
COMPARATOR

R66y

SECONDARY CUE
^TONE DETECTOR

y 150 Hz

CUE
LEVEL CONTROL
COMPARATOR

n
—!=

J
UUA
,^U11B

CUE
TONE RELAY
> CONTACT S

\

V REMOTE TERITIARY
7 CUE TONE INDICATOR
FRONT-PANEL
> TERITARY CUE
TONE INDICATOR

-+K2
TERITIARY
CUE TONE
RELAY

LOCATED ON
MOTHERBOARD

_\ fTfl SECONDARY CUE
7 LdJ TONE DETECTION
FRONT-PANEL
SECONDARY CUE
TONE INDICATOR
X REMOTE SECONDARY
7 cue TONE INDICATOR

END OF TONE
DETECTOR
UlSB. U19C
•> SECONDARY CUE
CUE TONE RELAY
> CONTACtS

O
H

\—
Kl
SECONDARY
CUE TONE
RELAY

LOCATED ON
MOTHERBOARD

>

^ [ g ] END OF
J EDM TONE

COPYRIGHT © 1990 BROADCAST ELECTRONICS, INC

597-9100-7A
FIGURE 4-1.
PLAYBACK CIRCUIT BOARD SIMPLIFIED
SCHEMATIC
(Sheet 1 of 2)
4-3/4-4

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STEAM POWERED RADIO.COM
FROM

O F
T O N E

EOM

B OA RD

L O G I C

E N D

C I R C U I T

R E C O R D

COMMAND

BO A RD

L O G I C

FORWARD

R E C O R D

FORWARD

I N H I B I T

F A S T

xA

C U E

C

^

/

D E T E C T I O N

C I R C U I T

T O

F A S T

T O N E

P R I M A R Y

S W I T C H

FORWARD

F A S T

S W I T C H

S T O P

S W I T C H I

S T A R T

S W I T C H

X T -

C A R T R I D G E
P R E S E N T

L O B I C

B O A R D

R E C O R D

C I R C U I T

TO

/-

4-

•START/STOP LOGIC CIRCUITS T A R T = H I G H

_

T O

/

C I R C U I T

S T A R T

B O A R D

COMMAND

S E L E C T O R

T O

C I R C U I T

M U T E

A U D I O / M U T E

MUTE

L O G I C

A N D
L O G I C

S T A T U S

C I R C U I T

R E C O R D

T O

COMMAND
S O L E N O I D

E N A B L E

\

C I R C U I T

M U T E
L O G I C

T O

S T A T U S

A U X I L I A R Y
- > S T A R T

>

P U L S E
E X T E R N A L
E Q U I P M E N T

^ F O R

S T A R T

I N D I C A T O R

S T A R T

' ' ' ^ R O N T - P A N E L

4-24.

The start/stop logic circuit consists of: 1) start/stop logic U14A, U15A, and U16A, 2) start/
stop latch U13B, 3) auxiliary start one-shot U18A, 4) inhibit one-shot U18B, and 5) inverters U12AaJ12B.

4-25.

Start and Start Lock-out Operations. A start operation is initiated when the front-panel
start switch/indicator is depressed. A LOW from the start switch/indicator is applied to
the start/stop logic for decoding. If the start lock-out and cartridge present switch status
lines are LOW, the start output line of the start/stop logic will apply a LOW to start/stop
latch U13B.

4-26.

With the LOW from the start/stop logic, U13B will output a continuous HIGH through diode D17 to energize the solenoid. This HIGH is also routed to the primary cue inhibit circuit, auxiliary start circuit, start indicator circuit, mute logic circuit, and flasher logic circuit.

4-27.

A start lock-out condition will occur when deck operation is terminated by a primary cue
tone detection and the start lock-out status line from the flasher logic circuit is HIGH.
This HIGH indicates a cartridge played condition and is applied to the start/stop logic to
prevent consecutive start operations.

4-28.

Start Indicator Operation. With the HIGH from the start/stop latch, inverters U12A/U12B
will output a LOW to illuminate the start and remote start indicator.

4-29.

Auxiliary Start Operation. With the HIGH from the start/stop latch, the auxiliary start
one-shot will apply a momentary HIGH to the mute logic circuit and inverter U12E.
U12E will output a momentary LOW for external equipment operations.

4-30.

Manual and Automatic Stop Operation. A manual stop operation is initiated when the
stop switch is depressed. A LOW from the stop switch is routed to the start/stop logic for
decoding. The stop output line of the start/stop logic will apply a LOW to start/stop latch
U13B. U13B will toggle LOW to disable the solenoid and extinguish the start indicators.

4-31.

An automatic stop operation is initiated when a primary cue tone is detected. A HIGH
from the primary cue tone status line is routed through primary cue detect jumper J211 to
the start/stop logic for decoding. The stop output line will go LOW to terminate deck operations. This LOW is also routed to the record logic circuit board through diode D36 to
terminate a record operation.

4-32.

Primary Cue inhibit Operation. During a start operation, a HIGH from the start/stop
latch is applied to inhibit one-shot U18B. The output of U18B is connected to the primary
cue detection status line. U18B will apply a momentary HIGH for approximately 1.75 seconds to the primary cue status line to delay a stop operation.

4-33.

Maintenance Mode Operation. The start/stop logic will also decode a special maintenance mode command to energize the solenoid without a cartridge inserted into the deck.
This command is applied to the start/stop logic when the start and stop switches are simultaneously depressed and the stop switch released prior to the start switch.

4-34.

FLASHER LOGIC CIRCUIT. The flasher logic circuit generates the start lock-out status
and controls the operation of the stop indicator depending on start lock-out jumper J213.
This circuit consists of NOR gate U17B, AND gates U15C and U15D, inverters
U12C/U12D, latch U13D, and NAND gate U17A.

4-35.

Jumper installed. When jumper J213 is installed, the start lock-out operation is enabled.
A LOW from the primary cue tone detection status line will be applied to start lock-out
latch U13D. U13D will apply a HIGH to the start/stop logic and flasher oscillator U17A.
U17A will apply pulses at a 1 Hz rate to flasher gate U15D.

4-36.

With the unit in the stop mode, U17B will gate a LOW from U13B and a LOW from the
cartridge present switch status line to output a HIGH to U15D. U15D will gate the oscillator pulses from U17A for application to the stop indicator through inverters U12C/U12D.
The stop indicator will flash at a 1 Hz rate for a cartridge played condition.

4-7
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ii_i-a

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4-37.

The start lock-out latch is cleared by AND gate U15C. The stop switch and cartridge present switch status lines are applied to U15C. With a LOW from either the stop switch or
cartridge present switch, U15C will output a LOW to reset to latch U13D.

4-38.

Jumper Removed. When jumper J213 is removed, the start lock-out function is disabled.
U13D will apply a continuous LOW to U17A which will output a HIGH to U15D. With the
unit in the stop mode, U17B will apply a HIGH to U15D which outputs a continuous
HIGH through inverters U12CAJ12D to illuminate the stop indicator.

4-39.

FAST FORWARD LOGIC CIRCUIT. The fast forward logic circuit controls the speed of the
capstan motor and operation of the solenoid. Depending on jumper J212, the automatic
fast forward operation is enabled or disabled. The fast forward logic circuit consists of: 1)
fast forward logic U14B, U15B, and U16B, 2) fast forward latch U13A, and 3) inverters
U12F a n d U l l F / U l l G .

4-40.

Automatic Fast Forward Operation. The automatic fast forward function is enabled when
jumper J212 is installed. A fast forward operation is initiated when a secondary cue tone
is detected. A LOW from the FND of FOM tone status line will be applied to the fast forward logic for decoding.

4-41.

With the LOW from the FND of FOM tone status line and a LOW from the cartridge present switch status line, the fast forward output line of the fast forward logic will output a
LOW to start/stop latch U13B through diode D29, and fast forward latch U13A The LOW
at U13B will extinguish only the start indicator. U13A will output a HIGH through diode
D18 to maintain solenoid operation.

4-42.

The HIGH fast forward command from U13A is also routed to inverters U l l F / U l l G to illuminate the fast forward indicator and the motor control circuit board through inverter
U12F.

4-43.

In a record/playback unit, a HIGH applied to the fast forward logic through J215 inhibits a
fast forward function when an FND of FOM tone is detected during a record operation.
With J215 removed during a record operation, an FND of FOM tone will initiate a fast forward function and also disable the record operation by applying a LOW through diode
D39.

4-44.

Manual Fast Forward Operation. A manual fast forward operation is identical to an automatic except the manual operation is initiated when the fast forward switch is depressed.
A LOW from the fast forward switch will be applied to the fast forward logic to begin a fast
forward operation.

4-45.

Automatic/Manual Termination of Fast Forward Operation. Automatic termination of the
fast forward operation is initiated when a LOW from the primary cue tone detection line is
applied to the fast forward logic for decoding. The normal output line of the fast forward
logic will apply a LOW to U13A. U13A will route a LOW to the motor control circuit board
to terminate the fast forward operation.

4—46.

Manual termination of the fast forward operation is identical to an automatic except the
manual operation is initiated when the start switch is depressed. A LOW from the start
switch will be applied to the fast forward logic to begin a termination operation.

4-47.

MUTE LOGIC CIRCUIT. The mute logic circuit generates the mute command, controls the
operation of the audio indicator, and provides an audio delay. This circuit consists of mute
logic U14C and U16C, mute latch U13C, NAND gate U17C, transistor Q3, and inverter
UllC.

4-48.

Mute Operation. A mute operation is initiated when a LOW from the stop switch bus, or
the fast forward switch bus is applied to the mute logic for decoding. A LOW from the
FND of FOM through J214 will also initiate a mute operation. The mute logic will apply a
LOW to U13C. U13C will output a HIGH to the audio/mute selector and transistor Q3.
The HIGH will bias Q3 ON which routes a LOW through inverter U l l C to extinguish the
audio indicator.

4-8
STEAM POWERED RADIO.COM

4-49.

A mute operation is also initiated by a LOW on the primary cue tone detection bus. This
LOW is directly applied to mute latch U13C which outputs a mute command.

4-50.

In addition, an auxiliary mute bus provides external mute operations. If both the secondary cue tone detection and auxiliary start status lines are LOW, the mute logic will decode a LOW on the auxiliary mute bus to generate a mute command.

4-51.

Audio Enable Operation, The motor control circuit board applies a LOW to the input of
U17C which momentarily inhibits audio until the motor attains proper speed. When the
start switch is depressed, a HIGH from start/stop latch U13B will be applied to U17C and
073. U17C will output a momentary LOW to U13C for a duration established by capacitor C73 and resistor R121. This LOW resets U13C to enable the audio.

4-52.

Audio can also be enabled during a fast forward operation. When the fast forward switch
is continuously depressed, a LOW is directly applied to the output of mute latch U13C to
enable the audio.

4-53.

SOLENOID AND POWER SUPPLY CIRCUITS. Figure 4-2 presents a simplified schematic
diagram of the solenoid and power supply circuits. Refer to Figure 4-2 as required for a
description of the circuits.

4-54.

Soldnoid Operation. Prior to solenoid operation, transistor Q3 is biased ON which routes
+28 volts through the solenoid winding to the collector of transistor Q l and the base of
transistor Q2. With a HIGH from the start/stop latch, Q l will conduct to rapidly operate
the solenoid.

4-55.

With Q l conducting, a LOW is applied to the base of Q2 which biases Q2 Off. The collector
of Q2 will go HIGH which disables Q3 and allows +12 volts from solenoid driver U3 to be
applied to the solenoid.

4-56.

Power Supply Circuit. Primary power is applied to the DT-90A through line fuse F l and
switch S i to the primary of power transformer T l . The secondaries of T l provide 25 volt,
40 volt, and 9 volt ac potentials.

4-57.

The 40 volt ac potential is routed to a full-wave rectifier and filter network to provide +20
volt and -20 volt dc potentials at the output. The +20 volt dc is applied to the input of
regulator U l which supplies a regulated +16 volts to the logic circuit board, front>-panel
switches, and cue relays. The -20 volt dc is applied to the input of regulator U2 which
supplies a regulated -16 volts to the logic circuit board.

4-58.

The 9 volt ac potential is routed to a full-wave rectifier and filter network to provide an
unregulated +10 volt supply for fronl^panel status indicators.

4-59.

The 25 volt ac potential is routed to a full-wave rectifier and filter network to provide an
unregulated +28 volt supply for solenoid operation. +28 volts is also routed to a lamp
driver which supplies +28 volts to the rear-panel for external applications, and operating
voltage for front-panel switch/indicators.

4-9
STEAM POWERED RADIO.COM

-SOLENOID CIRCUIT'
SOLENOID DRIVER
+ 12V

- I 2 8 V >

Q3

k/Q2

ENABLE COMMAND
FROM START/STOP >
LATCH
POWER SUPPLY CIRCUITLAMP DRIVER
05, 015. C3

Fl

SI

117/230VAC
50/60HZ

FULL WAVE
RECTIFIER
AND FILTER
NETWORK

FULL WAVE
RECTIFIER
AND FILTER
NETWORK

+28V SUPPLY TO FRONT PANEL
SWITCH/INDICATORS AND
REAR-PANEL CONNECTORS
•f28V SUPPLY TO
SOLENOID CIRCUIT

FULL WAVE
RECTIFIER
AND FILTER
NETWORK
Tl

\

+16V REG.
Ul

•UBV SUPPLY TO LOGIC CIRCUIT
BOARDS. CUE RELAYS. AND
FRONT-PANEL SWITCHES.

-IBV RES.
U2

-IBV SUPPLY TO LOGIC
CIRCUIT BOARDS

•HOV SUPPLY TO FRONT-PANEL
-> METER DISPLAY AND STATUS
INDICATORS

COPYRIGHT© 1990 BROADCAST ELECTRONICS. INC

597-910O-7C
FIGURE 4-2. POWER SUPPLY AND SOLENOID CIRCUITS
4-60.

MOTOR CONTROL CIRCUIT BOARD.

4-61.

Figure 4-3 presents a simplified schematic diagram of the motor control circuit board. Refer to Figure 4-3 as required for a description of the following circuits.

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I ELBCTHCNICS I N C

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4-10

A. Reference Circuit.
B. Tachometer Processing Circuit.
C. Frequency Comparator Circuit.
D. Motor Driver Circuit.
E . Motor Protection Circuit.
F. Motor Lock Detector Circuit.
G. Motor Commutator Control Circuit.
H. Vari-Speed Circuit.
J . Power Supply Circuit.
4-62.

REFERENCE CIRCUIT. A precision reference signal for servo circuit operation is generated
by a 460.8 kHz crystal controlled oscillator circuit consisting of crystal Y l , capacitors C30,
C31, and resistor R54. The oscillator circuit output is applied to divider U l l .

4-63.

Divider U l l is designed to generate motor frequency references. The output of U l l and
motor speed jumper network W l is applied to divide-by-three stage U12A/B. The output
of divider U12A/B is routed to multiplexer network U13A/B. U13A/B is designed to switch
between normal and fast forward motor frequency references. Jumper network W3 provides input information for the multiplexer network. The output of multiplexer U13A/B is
routed for application to a frequency comparator circuit. The following list provides motor
reference frequencies and corresponding motor speeds.

MOTOR R E F E R E N C E FREQUENCY (Hz)
NORMAL
FAST FORWARD
1200
600
300

3600
1800
900

MOTOR SPEED (Inches-Per-Second)
NORMAL
FAST FORWARD
15
7.5
3.75

22.5
11.25

4-64.

Normal/Fast Forward Operation. With the imit in the normal mode and programmed for
7.5 IPS operation, divider U l l will output an 1800 Hz reference to divider U12A/B and
multiplexer U13A/B via jumper network W3. U12A/U12B will output a 600 Hz reference
to multiplexer U13A/B. The vari-speed and fast forward control lines will be HIGH to
instruct multiplexer U13A/B to output a 600 Hz motor reference frequency for application
to a frequency comparator circuit.

4-65.

When the unit is operated to the fast forward mode, the fast forward control line will go
LOW. The LOW instructs multiplexer U13A/B to output an 1800 Hz reference for application to a frequency comparator circuit.

4-66.

TACHOMETER PROCESSING CIRCUIT. An indication of cartridge machine motor speed
is generated by a tachometer winding. When the unit is programmed for 7.5 IPS operation
and the motor is at full speed, the tachometer will output a sinusoidal 600 Hz signal to
high gain amplifier stage U2A. U2A is configured for a gain of approximately 1000. The
output of U2A is applied to inverter U15G. U15G generates square-wave tachometer
pulses for application to a frequency comparator circuit.

4-67.

FREQUENCY CCMPARATCR CIRCUIT. The frequency comparator circuit consists of a
one-shot network, a frequency comparator, and a shift register. The one-shot network
consists of integrated circuits U3A/B. The reference circuit output (600 Hz for 7.5 IPS operation) is applied to one-shot U3B. The motor tachometer reference is applied to oneshot U3A. The one-shots are designed to generate precision square-wave signals for application to the frequency comparator.

4-11
STEAM POWERED RADIO.COM

4-68.

The frequency comparator network consists of NAND gates U4A/B/C. The circuit compares the applied frequencies and generates corresponding shift and clock signals to shift
register U5 and a rectifier network. Shift register U5 will generate four outputs which
represent operating parameters such as motor load and speed. The outputs provide information for a motor driver circuit, a motor brake control circuit, and a motor protection circuit.

4-69.

Motor Run Circuit. The C L R input of shift register U5 determines motor operation. When
the deck switch is open (cartridge not present), a LOW is applied to the C L R input to inhibit motor operation. When the deck switch is closed (cartridge present), a H K J I H is applied to the C L R input to initiate motor operation.

4-70.

MOTOR DRIVER CIRCUIT. One output from shift register U5 is filtered into a dc level by
a passive low-pass filter consisting of resistors R7, R8, R9 and capacitors C9 and CIO. The
dc level is buffered by operational amplifier U6A and applied to amplifier stage U6B. U6B
will output a varying bias voltage to motor driver transistor Q l . Q l is designed to provide
a dc supply voltage which controls the speed of the motor. Potentiometer R16 provides motor drive calibration.

4-71.

MOTOR PROTECTION CIRCUIT. The motor is monitored for loss of tachometer signals
and over-current conditions by a protection circuit. A rectifier circuit consisting of diodes
D2 and D13 and operational amplifier U7A function as a tachometer monitor network.
With the application of tachometer signals, the output of U7A will be HIGH to allow normal motor drive operation. With the loss of tachometer pulses, the output of U7A will go
LOW to bias Q l off and terminate motor operation.

4-72.

Motor over-current conditions are monitored by a circuit consisting of a passive low-pass
filter, comparator U7C, and latch U7D. A motor current sample is filtered into a dc level
by a low-pass filter consisting of resistors R39, R40, and capacitor C26. The dc signal is
applied to comparator U7C and latch U7D. When the motor current sample is below the
reference level at U7C, U7C will output a HIGH to latch U7D. U7D will output a HIGH to
allow normal motor drive operation. When the motor current sample increases above the
comparator reference level, U7C will output a LOW to latch U7D. U7D will output a LOW
to bias Q l off and terminate motor operation. A timing circuit consisting of inverter U15B,
transistor Q8, and capacitor C29 disables the over-current protection circuit for approximately 3 seconds during initial motor operation.

4-73.

MOTOR LOCK DETECTOR CIRCUIT. Samples from U5 are monitored for motor unlocked
conditions by inverter U2B, diode D4, and fiip-fiop U9B. When the motor is operating in a
locked condition, a HIGH is applied to inverter U2B and a LOW to Diode D4. U2B will
output a LOW to frequency lock detector U9B. The output of U9B will go LOW. The LOW
is routed to inverter U15C which outputs a HIGH to the playback circuit board. When an
unlocked condition exists, the output of U2B will go HIGH or diode D4 will conduct to generate a clock pulse for fiip-fiop U9B. The output U9B will go HIGH. Inverter U15C will
route a LOW to the playback circuitry to inhibit audio output until the motor speed is synchronized.

4-74.

MOTOR COMMUTATOR CONTROL CIRCUIT. The motor commutator control circuit
consists of a stator control/driver network and a brake control circuit. Multiplexer UlOA/
B/C and transistors Q2 through Q7 operate together to control the direction of the motor
stators. Divider U8 and motor brake control fiip-fiop U9A initiate motor braking operations when: 1) the motor is operating at a fast forward rate and required to return to the
normal operating speed and 2) at motor termination.

4-12
STEAM POWERED RADIO.COM

VARI-SPEED y.
CONTROL —

COPYRIGHT © 1990 BROADCAST ELECTRONICS, INC

597-9100-22

MOTOR TACHOMETER
PULSES

CARTRIDGE
PRESENT
SWITCH

Ul
+28V dc

>

*•

VOLT
• +5
REGULATOR

FIGURE 4-3. MOTOR CONTROL CIRCUIT
BOARD SIMPLIFIED SCHEMATIC
4-13/4-14

STEAM POWERED RADIO.COM

4-75.

When the motor is in normal or fast forward operation, output samples from U5 will force
the output of divider U8 LOW. The LOW is applied to motor brake control flip-flop U9A.
The output of U9A will go LOW. With the output of U9A LOW, stator control logic UlOA/
B/C and the transistor driver circuits operate individually to control each motor stator. A
signal from hall effect sensor 1 will be routed through stator control device UlOA to the
stator 1 driver circuit. The driver circuit will output the signal to control the operation of
stator 1. Stator 2 and 3 control/driver networks operate in an identical manner. The stator control/driver circuitry will respond in the appropriate sequence to initiate and control
motor commutator rotation.

4-76.

When a motor braking operation is required, the motor drive samples from U5 will produce
a square-wave clock signal from U8. The clock signal is applied to flip-flop U9A which
outputs a corresponding square-wave control signal to the stator control logic. The stator
control logic will respond by simultaneously applying a +28 volt pulse to each stator to provide a motor braking action. When the motor returns to a locked condition, the output of
U9A will go LOW to terminate motor braking operation and provide normal stator control.

4-77.

VARI-SPEED CIRCUIT. The cartridge machine motor may be varied a minimum ±10% for
special audio applications by a vari-speed feature. The vari-speed circuitry consists of
comparator U7B, divider U14, and jumper network U2. The circuit operates from a nominal 9600 Hz external signal source.

4-78.

The vari-speed signal source is applied to comparator U7B. U7B is designed to generate a
square-wave reference signal for application to multiplexer U13B. When a LOW is applied to the vari-speed control line, multiplexer U13B will route the reference signal to
divider U14. U14 will output a corresponding reference signal for application to U13A and
the reference circuitry.

4-79.

POWER SUPPLY CIRCUIT. The motor control circuit board power supply circuit consists
of regulator U l and capacitor C39. U l and capacitor C39 regulate the +28V dc voltage
into a +5 volt supply for circuit operations.

4-80.

RECORD CIRCUITRY.

4-81.

Figure 4-4 presents a simplified schematic diagram of the record logic circuit board. Refer
to Figure 4-4 as required for a description of the following circuits.
A. Record Audio Processing Circuits.
B. Metering Circuits.
C. Program Bias Circuit.
D. Cue Bias Circuit.
E . Cue Tone Generator Circuits.
F. Record/Primary Cue Tone Logic Circuits.
G. Secondary/Tertiary Cue Tone Logic Circuits.

4-82.

RECORD AUDIO PROCESSING CIRCUITS. Stereophonic units are equipped with left
and right channel record audio circuits. Monophonic units are equipped with only the left
channel audio circuit. The left and right channel audio circuits are identical; therefore,
only the left channel record circuit will be discussed.

4-83.

Input Amplifier Circuit. Left channel record audio from the rear-panel record connector is
applied to a 600 Ohm impedance matching network. Audio from the impedance network is
applied to integrated circuits UlA, U I B and UID which operate as an instrumentation
amplifier. The amplifier provides maximum noise rejection with a gain of one.

4-15
STEAM POWERED RADIO.COM

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BROADCAST
ELECTRONICS I N C

STEAM POWERED RADIO.COM

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FIGURE 4-4. RECORD CffiCUIT BOARD SIMPLIFIED SCHEMATIC
(Sheet 1 of 2)

597-9100-SA

COPYRIGHT © 1990 BROADCAST ELECTRONCS, INC

- - - - - ---------- - - - -

RlllHT OWN3..
PLAYBAO< AlllIO

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AHPLIFIER lJ38

PLAYBACK/RECORJ
HETER COl'fWO

-=- -=- -=- -=- -=-

ALOIO PROCESSING CIROJITS-------------------,

� -------------------HETER CIRCUITS------------------------....

RillHT
Itf'UT
CHANNEL
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AllllO � NETlllR<
ltf'UT

LEFT
INPUT
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Itf'UT

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1500Hz

348KHZ

SOLENOID ENABLE ,
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1
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16

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R52

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ENABLE
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EXTERNAL CUE

SECONDARY CUE
TONE LEVEL CONTROL

PRIMARY CUE
TONE LEVEL CONTROL

BIAS

BIAS

^^J

L,

_ ^

N,

PANEL

X

INDICATOR

RECORD

REMOTE

INDICATOR

RREECCOORRDD

FRONT

V TO PRIMARY
7 CUE TONE
ENABLE GATE
U12D

X I \ TO DIODE 0 8
I 1
^ AT U19B

MUTE

PROGRAM

TO
7

Ql

Q2

MUTE

RECORD MUTE
COMMAND
TO PROGRAM

\

MUTE

BOARD

LOGIC

TO

COMMAND

METER

CIRCUIT

PLAYBACK

^

rr\
U U

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COMMAND
FORWARD
INHIBIT

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A

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7

7

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R84

R76

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TONE LEVEL CONTROL

A TO CUE CHANNEL
7 RECORD HEAD

RIGHT CHANNEL BIAS
LEVa CONTROL
N n n RIGHT CHANNEL
y>)C—
7 ULI RECORD BIAS
R49

LEFT CHANNEL BIAS
LEVEL CONTROL
^ j - ^ LEFT CHANNEL
—
RECORD BIAS
R48

128KHZ

12BKHZ

U19C

RECORD
ENABLE

C O N T R O L

U18A

C I R C U I T S

ITKHZ

L O G I C

^ O S C I L L A T O R

+v

r

IKHzaOW

RECORO=HISH

U13B AND ASSOCIATED
COMPONENTS

SECONDARY CUE TONE
LOW-PASS FILTER

U14A AND ASSOCIATED
COMPONENTS

PRIMARY CUE TONE
LOW-PASS FILTER

U13A AND ASSOCIATED
COMPONENTS

TERTIARY CUE TONE
LOW-PASS FILTER

EXTERNAL CUEy.
AUDIO INPUT 7

SECONDARY CUE TONE
ENABLE GATE

k4-

CUE BIAS
LOW-PASS FILTER
USB AND ASSOCIATED
COMPONENTS

C I R C U I T

C I R C U I T S -

PRIMARY CUE TONE
ENABLE GATE

S E C O N O A R Y / T E R T I A R Y

U17AAJ17B

IKHz
CUE TONE
DISABLE
LATCH

B I A S

GATE U18A

. AMPLIFIER

C U E

-ENABLE

TERTIARY CUE TONE
ENABLE GATE

HEC0RO=L0W

U17CAI170

RECORD
LATCH

ENABLEO=HIGH

J U M P E R

U12C

PROGRAM BIAS
J
LOW-PASS FILTER
UlOB AND ASSOCIATED
COMPONENTS
^ FROM RECORD

G E N E R A T O R

U120

U12A

T O N E

• R E C O R D / P R I M A R Y

FROM U16C>

FROM U7C>^

MUTE

TY
_y FROM BUFFER
^U19B

BIAS

C U E

FROM U16D>

ui6e

150Hz ENABLE
GATE

U16C

DELAY
R95

RECORD
CONTROL (

U12BAJ16A

FROM

'CUE

J 04

BIAS

^

-^2301

J102>^

-^J301

2201 > 5 -

-^2301

-^J201

2201

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^J301

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J102>^

-^JBOl

J102>^
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k;j301

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7

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?4

--<2105

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2102)4

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V S

2L/J201 2105)4
^

i<2105

<200

Hlb

f
100 J_C19

PI p

2 i < 2 2 0 1 2108

V S

>4

^

•

100 J_C1B

3 J 2 0 1

.15
2105 > 4

Ml/

100

9

j_C20

3

3

32105
-3(2105
—4<2105
-3(2105
-34

)4

3
3
3

2107

R20
HdU
WV—•
100 J_C23

19

44
-34

^2105

220l)4

ip.luF

p4 p

4(J105

2107 >^

10UF/35V

)4

2201

bib

4(J105

-3(2105

220

V ?

L(2102

J201>4

2201

2<2105

CIS

•10UF/35V

PS .

4(2102

2107)4

1N4005

C16

1
100 J^C17

-3(2102
-3(2102

J20l3bi-

iR13

1

-3J102

2108 >4 1

D17

^

-3(2102

21DB>-^—I

1N4005

.

-3J102

2201 >4
J201>^

2201

2105)4

3
3
3

-4- ^
J10B>i5

3J102

1 _ -3(J102
-i

^J201
KJ103

3J102

>4

-3(2103

2103 >^

2201 >^

J102>1^
J102>^

+28V
UNHEG

+ 16V

ip
KJ201
^

s 6

J10B)4
^

R'9
100

2. LAST COMPONENTS USED: R26, C24.
D17. K2. 05. U3, S J301 .
f
T C22

—L-

42<2301 2106)4

Y«)--T1
-A«V
100

1

3(2301

3. COMPONENTS NOT USED: 04.

C24

4. SEE PCB ASSEMBLY AD910-0115.

1990 aflOADCAST ELECTRONICS. INC.

DWN. BY

MH

Inlor.Atlon aisclasid herelr shill b|
reproddcefl dd trandferrdd tc dider

BROADCAST ELECTRONICS. INC.

dthdra fop •dddfscturlno dp fdP dny
nthep pdppdse eicdpt as spaplMcsUy
authdpliad In orltlno by BflOADCAST
ELECTRONICS. INC.

CHKD
ME

MATERIAL

BROADCAST ELECTRONICS INC.

SEE B/M
910-0115
FINISH

PflOJ. ENGR.
TOLERANCE (DECIMAL) U.D.S.
.X + .030
.XXX ± 005
XX ± .015
ANGLES t 1*

STEAM POWERED RADIO.COM

9-11-90

;7L^-T.-.t-Y
MFG.

^'

. ' •.4

MOTHERBOARD
TYPE SIZE

NEXT ASSY.

900-9100-001

S
MODEL

DWG. ND.

D
DT-90A

910-0115
NONE

COPYHIGHI © 1990 BROADCAST FLECTRONICS.

INC

, — 510-0115

-SEE

o

NOTE 4

J201

J107IIZZ1

JiosEZZl ^

J301

J102

50
• • • D O D
otiiiDODn2l

,26

r
1

J103

1

K E Y I N G PIN 5 -

J104
SEE NOTE 2
+

) nn

CIO

+

) rHrCi C 1 1

-CH23>-

4-3

o

SF 420-41064.23-4002
407-0132
423-400I
4 PLCS.

. 750 — C
+ .020

SEE NOTE 1

C12

420-4106
423-4002

455-0068-N

^~U1-U3.
- 455-0068
HEP.

AND Q5

L-409-7403
4 PLCS.

-NOTE ORIENTATION OF "T" LETTER
ON HEATSTNK 455-0068
4Z0-4IO7
/IX

.——423-4001

1.

(X)
U3

(O)
-PCB

JI05 / JI06-

-421

DETAIL "A"
4 PLCS.

REF.

5-6

-4001

DETAIL

AND 05 MUST BE LOCATED TO DIMENSION

2. 420-4106 , 6 PLCS. TO BE TOROUED

'

-423-4002

U1-U3.

SHOWN BEFORE SOLDERING TO P.O. BOARD.

4.

IN.-LBS.

A F T L L C O i - i l / N L M L CM C O M / NLMT S i r E C F
B C A F P A F C AAVL FOLOCKCL T h S N IMSTALL
J2.01 AMP J3C)| . T H C V A R C T c F L I N S T A L L E O
I L L I L . G ALLROrRlFTE S E A T L / . T c . L S . AS PER.
AFT AL.FLICATICTI S P E C I F / C A T I O N Nr.. •iiA-qocoT
RC-J C! S H E E T 1 TH,i.ci 61 .
J I C T A N L Tlr.a A R E O F T i o c lA.E . TTAFY L^ •
To E C IFISERTCD T l B O A K L .

T NEED

C 0 P Y R I G H T © 1 9 9 [ ) BROADCAST ELECTRONICS,

TOLERANCE DECIMAL U . O . S .
.X * . 0 3 0
.XXX - , 0 0 5
,XX T . 0 1 5 ANGLES * 1° :

STEAM POWERED RADIO.COM

INC.

DWN BY
PROPRIETARY RIGHTS are included in
KLS
7-20-90
information disclosed herein. This infornation is submitted in confidence and neither
this docuirent nor the information disclosed herein shall be reproduced or transferred to other documents or used or d Si
closed to others for manufacturing or a
any other pirpose except as specirical y
authorized in writing by BnoADCAST
ELECTRONICS. I N C .
PROJ-. E N S R .

MATERIAL
SEE B/M

IBHOADCAST ELECTRONICS INC.

910-0115
FINISH

PCB ASSEMBLY- MOTHERBOARD
NEXT

ASSY

TYPE I S I Z E I DWG.NO
D

e,DT-90A

910-0115

Uc.LE

2: 1

ET

i

OF i

TABLE 6-2. MOTHERBOARD CHICUIT BOARD ASSEMBLY - 910-0115
(Sheet 1 of 2)
REF. DES.
DESCRIPTION
PART NO. QTY.
Capacitor, Electrolytic, 2200 uF, 35V
014-2293
2
C1,C2
Capacitor, Electrolytic, 10 uF, 35V
023-1076
1
C3
Capacitor, Electrolytic, 4700 uF ±20%, 50V
020-4794
1
Capacitor, Electrolytic, 10,000 uF db20%, 16V
C4
1
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
C5
020—1094
1
Capacitor, Electrolytic, 1 uF, 50V
C6
003-1054
024-1064
2
Capacitor,
Electrolytic,
10
uF,
S5V
C7,C8
023-1076
2
Capacitor, Electrolytic, 4.7 uF, 35V, Low Leakage
C9,C10
024-4753
2
Capacitor, Electrolytic, 10 uF, 35V
C11,C12
C13THRU
C16
C17THRU
C24
DITHRU
D12
D13,D14
D15
D16,D17
JlOl
J102
J103
J104
J105
J106
J201,J301
K1,K2

Ql
02
Q3
Q5
Rl
R2
R3
R4

R5,R6
R7
R8,R9
R10,R11
R12,R13
R14 THRU
R21

R22
R23
R24
R25
R26
Ul
U2

Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Diode, 1N4005, Silicon, 600V @ 1 Ampere
Diode, 1N4148, Silicon, 75V ® 0.3 Amperes
Diode, 1N4750A Zener, 27V ±10%, 1 Watt
Diode, 1N4005, Silicon, 600V @ 1 Ampere
Connector, 9-Pin
Receptacle, Male, 13-Pin Dual In-Line
Receptacle, Header, 16-Pin Dual In-Line
Receptacle, Male, 20-Pin In-Line
Connector, 25-Pin D-Type
Connector, 25-Pin
Connector Header, 50-Pin Dual In-hne
Relay,
Coil: 12V dc, 800 Ohms
Contacts: lOOV dc @ 0.5 Amperes Maximum
Transistor, TIP 120, NPN Darlington-Connected Silicon Power,
65W @ 25°C Case
Transistor, 2N3904, NPN, Silicon, TO-92 Case
Transistor, TIP125, Silicon, PNP, Darhngton, TO-220 Case
Transistor, TIP31A, Silicon, NPN, TQ-220 AB Case
Resistor, 470 Ohm ±5%, 1/4W
Resistor, 22 k Ohm ±5%, 1/4W
Resistor, 1 k Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 1.5 k Ohm ±1%, 1/4W
Resistor, 124 Ohm ±1%, 1/4W
Resistor, 200 Ohm ±5%, iy4W
Resistor, 100 Ohm ±5%, 1/4W
Resistor, 10 Ohm ±5%, 1/4W
Resistor, 47 Ohm ±5%, 1/2W
Resistor, 22.1 Ohm ±1%, 1/4W
Resistor, 10 Ohm ±5%, 2W
Resistor, 100 k Ohm ±5%, 1/4W
Integrated Circuit, LM317T, Adjustable Positive Voltage
Regulator, 1.2V to 37V, 1.5 Ampere, TO-220 Case
Integrated Circuit, LM337T, Adjustable Negative Voltage
Regulator, 1.2V to 37V, 1.5 Ampere, TO-220 Case

STEAM POWERED RADIO.COM

AOA

1AA A

^ A\ A^

4 y\ fA

d

023-1076
AAA

m

m\

W

A

003-1054
203-4005
203—4148
200-0027
203-4005
418-0900
417-2600
417-1603
417-0200
417-0153
417-0146
270-0056
OAO

A m

A(\f\C

mm A A~\ A A

4ic5—ZOUU

210-0120
211-3904
210-0125
219-0031

1 00—47'^8

100-2253
100-1043
100-1063
100-1053
120-5011
103-1504
103-1241
100-2033
100-1033
100-1023
110-4723
103-2212
130-1023
100-1063
227-0317
227-0337

4
8

Ia

2
1
2
1
1
1
1
1
1
1

2
2

1

1
1
1
J.

1
1
1

2

1

2
2
2
8

1

TABLE 6-2. MOTHERBOARD CmCUIT BOARD ASSEMBLY - 910-0115
(Sheet 2 of 2)
REF. DES.
DESCRn»TION
PART NO. QTY.
U3

Integrated Circuit, LM317T, Adjustable Positive Voltage
Regulator, 1.2V to 37V, 1.5 Ampere, TO-220 Case
Blank Motherboard Circuit Board

STEAM POWERED RADIO.COM

227-0317

1

510-0115

1

STEAM POWERED RADIO.COM

STEAM POWERED RADIO.COM

COPYRIGHT © 1 9 B 8 BROADCAST PLECTRONICS, INC.

5 1 0 - 0 1 1 2

N O T E :

1

.

2 .

( S E E

3

1
1

0
0

-

S

C

H

0

1

1

0

1

1

E

M

A

2
2

T

I

C

8

0

9

1

0

-

0

1

1

2

.

" S T E R E O "
-

0

0

1

\ R E A

S H A D E D

J S E O

Q N L Y

O N

" M O N O "

O N
S

D R A W I N G
T

E

R

E

O

V

E

R

R

E

P

R

S

I

O

N

E

S

E

N

-

T

S

9

1

C O M P O N E N T S
0

-

0

1

1

2

.

COPYRIGHT © 1988 BROAOCAS ELECTRONICS, INC.
PHOPRIETARY RIGHTS arc included ,

inforwtion disclosed derein. This infornil
tion is subBitted in confidence and neithf
this dncuiiBnt nor the intnnBtim disclosed herein shall he reproduced or Irani
terred to other dhcuments or used or d closed to others for eenutacturing or
anv other purpose except as specltical
authorited in riting hy BROADCAST
ELECTRONICS,

INC

MERK

SEE

9 -

CHKD

B/M

I B R O A D C A S T

I N C .

FINISH
JHS
PROJ.

4-6-89
ENGR.
NEXT

PRB

PCB ASSEHBLY- PLAYBACK BOARD

TYPE I S I Z E

4-6-B9
ASSY

A

4-6-89

MODEL

STEAM POWERED RADIO.COM

E L E C T R O N I C S

910-0112
910-0112-001

MH

JRC

TOLERANCE DECIMAL U . O S ,
.X -• . 0 3 0
.XXX t . 0 0 5
.XX t . 0 1 5 ANGLES t
f

lATERIAL

OWN B Y

I DUG.NO. g i Q - Q l l O

•

DT90A

"STEREO" | "^v |

910-0112-001

"MONO"

EI

I

CE

1

TABLE 6-3. MONOPHONIC/STEREOPHONIC PLAYBACK CIRCUIT BOARD ASSEMBLY
910-0112/-001 (Sheet 1 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
CI
1
Capacitor, Electrolytic, 10 uF, 25V, Non-Polarized

03
04
Capacitor, Electrolytic, 47 uF, 16V
05
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
06
Capacitor, Electrolytic, 4.7 uF, 35V, Low Leakage
07,08,09
OlO
Capacitor, Ceramic, 0.001 uF ±10%, 200V
011,012
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
013
Capacitor, Electrolytic, 10 uF, 25V, Non-Polarized
026
Capacitor,
Monolythic Ceramic, 0.1 uF ±20%, 50V
027
Capacitor, Electrolytic, 10 uF, 25V, Non-Polarized
028
Capacitor, Electrolytic, 10 uF, 35V
029
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
O30
031
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 10 uF, 25V, Non-Polarized
032
Capacitor, Electrolytic, 2.2 uF, 50V
033,034
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
035 THRU Capacitor, Mica, 50 pF ±5%, 500V
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
037
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
038
Capacitor, Electrolytic, 1 uF, 50V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
039,040
Capacitor, Monolythic Ceramic, 0.047 uF ±5% 50V
041,042
043
Capacitor, Electrolytic, 1 uF, 50V
044
045 THRU Capacitor, Electrolytic, 2.2 uF, 25V dc
047
048
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
049
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
050,051
Capacitor, Monolythic Ceramic, 0.047 uF ±5% 50V
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
052
Capacitor, Electrolytic, 1 uF, 50V
053
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 33 uF, 35V
054
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 33 uF, 35V
065
Capacitor, Electrolytic, 3.3 uF ±20%, 50V, Non-Polarized
056
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
057
Capacitor, Electrolytic, 4.7 uF, 35V, Low Leakage
C60THRU Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 4.7 uF, 35V, Low Leakage
062
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
063
Capacitor, Electrolytic, 4.7 uF, 35V, Low Leakage
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
064
Capacitor, Electrolytic, 1 uP, 50V
065
Capacitor, Ceramic, 0.001 uF ±10%, 200V
Monolythic Ceramic, 0.1 uF ±20%, 50V
083
066 THRU Capacitor,
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
Capacitor, Ceramic Disc, 10 pF ±10%, IkV, Non-Polarized
068
069
O70, 072
STEAM POWERED RADIO.COM
075 THRU
074
073
082
077,080,081

1

UXo—4/OU

003—1054
noii
d7t;n
n

P301>

Rl

HI-

- W y -

C5
.H136 " T -390PF
lOK
1%

lOK

1%

LEFT
LEVEL
INPUT

.R6
:3,6K

i5iv^

.J813B,

C15

BIAS

.R15
•22K

lOK
1*

P301>£

CIS

C6

lOK IX

P301>

Hh-

LEFT HIGH
FREQUENCY EQ
RIGHT RECORD LEVEL

P301 I
26 '

- A M -

RIGHT LOW
FREQUENCY EQ

P301

LR30
TIOOK

0.1

H REG AUDIO MUTE
+ 16V

H22V

4AV—hHYW

lOK
IX

lOK
IX

-AW_C25

28
PB t

R31

-16V

I FRONT PANEL I P301

3F
• R137 -p,,
•lOK
IX

-H<;j302

H h

[RIGHT\
'BIAS/

-AW-

• 50|

j(,/35v N.P.

1

4053
YO

4053

PLAY/REC
SWITCH

U5B

ZO

H h

5. COMPONENTS NOT USED: RB5

+ 1BV

METER MUTE
SWITCH
U5C

C90

B120

H h

-AW-

' '

UElh

^P301

TL072,

YCOM

B

C92
0.1

ZOOM

910-0113 "STEREO"
910-0113-001 "MONO"

4. * REPRESENTS COMPONENTS USED ONLY ON
STEREO VERSION - 910-0113.

C9B

+ 1.6V
RllO

REG

C,9^

C103T*

Hh-

P301,

LEFT
REG

500K

lOK
IX

lOK
IX

390PF

-E5JV^
R3

SHIELD

R16

22K

— W v -

,
-i^

—

100

R3

1%

-H
RlOe

+ 16V

GND

U20B3F

C91

4053
YO

- M A -

AA—1

R12/31

; 150K

RIGHT
VU DRIVER

1B9K I i

.R134X
:5.1K

NB

+1.6V

R126

~vwv-

P130

-AVr-

P301)4
-16V

1/50V

P301>i

COPYHICHT © 1988 BHOADCAST ELECTRONICS, INC.
OWN av
MERK 11-1-88

PROPRIETARY RIGHTS ire teluiled il
inforBation disclosed herein. This inforniation is suhiitted in confidence and neither
ferred ta other docufients sr used sr disclosed to others for nanufactiring or for;
any other purpose except as specifically •,
authorited in ariting hy B R O A D C A S T )
ELECTRONICS.
TOLERANCE

-16V

STEAM POWERED RADIO.COM

C99

H h

fll35

-AW-

5,
FP RIGHT
-2/P301
^
VU

R131

R129

-AW-

H h

YODM

13

P301>3E35
P301>
P301_

W
^

WV-

RIGHT PLAY
.R109 METER CAL

P301>i
P301>

3F

MA—f
lOOK

''U20C3F

INC.

I

DECIMAL

U.O.S.

.X

I

.030

.XXX

t

.XX

t

.015

ANGLES

1

SEE B/M
910-0113
910-0113-001
F I N I S H

ME

PROJ.

MPS
\

.

I B R O A D C A S T

NEXT

ASSY

AD910-0113

E L E C T R O N I C S

I N C .

SCHEMATICDlgO RECORD PCB

T I T L E

ENGR._

]

.005

1°

CHKD

MATERIAL

TYPE

S I Z E

S

•

DT90

DUG.NO.

910-0113

910-0113-001

-STEREO-

"MDNO-

NONE

PE^X

STEAM POWERED RADIO.COM

COPYRIGHT © 1988 BROADCAST ELECTRONICS, INC.

X NOTE X

,/

INSTALL "PEM" STANDOFFS BEFORE ANY
OTHER COMPONENTS, TO BE INSTALLED
FROM SOLDER SIDE OF PCB. 3 PLCS.

510-0113

NO
420-4103 —
423-4002
3 PLCS.

INSTALL

•

"PEM" S T A N D O F F S

FIRST.

SEE SCHEMATIC S D 9 1 G - G 1 1 3 .
3t.

910-0113

"STEREO"

910-0113-001

r

"MONO"

AMF..A SF1ADED ON D R A W I N G

1

USED

ONLY

ON S T E R E O

REPRESENTS

VERSION

COMPONENTS

- 910-0113.

T

•
426-4004 REF.

BREAK SHIELD OFF BEEOHE
FLOW SOLDEli
SEE SIDE DETAIL FDR MGIJNflNO

EITG-Gig

o

HOd

OddlHS

COPYRIGHT © 1988 BROADCAST ELECIRONICS, INC

o

PROPMETARY RIGHTS are included iri
infdrBation disclosed herein. This inforraaf
tion is suhiitted in confidence and neithel
this decuient nor the information dis- )
closed herein shall he reproduced or transt
'erred to other docinents or used or ' "
any other pi/pose except as specificaT,
authorized in witing hy B R O A D C A S T
ELECTRONICS.
TOLERANCE
.X
.XX

STEAM POWERED RADIO.COM

INC.
DECIMAL

U.O.S.

-

.030

.XXX T

t

.015

ANGLES t

.005

1°

OWN

BY

MATERIAL

MERK 11-5-88
CHKD

MH

4-6-89

JHS

4-6-89

SEE B/M
910-0113
910-0113-001

IBHOADCAST ELECTHONICS I N C .

F I N I S H

PROJ.

JRC

ENGR.

4-6-89
NEXT

MFG.

PRB

4-6-B9

ASSY

"pCB
A S S E M B L Y - RECORD BOARD
T Y P E I S I Z E I D W G . N O . 910-0113 "STEREO" I H E V
A
D
910-0113-001 "MONO"
DT90

I SHEET

^

OF •

TABLE 6-4. MONOPHONIC/STEREOPHONIC RECORD CIRCUIT BOARD ASSEMBLY
910-0113/-001 (Sheet 1 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
C1,C2
C5,C6
C9,C10
C13

CIS

016
019
021,022
025
026
C!28
030,031
032,033
034,035
036
037
038,039
O40
041
042
043 THRU
045
046
047,048
049
050
051
052 THRU
055
056
057
058
059 THRU
061
062
063
064
065
066
067
068
069
070
071
072 THRU
073
075
076

Capacitor, Electrolytic, 10 uF, 35V
Capacitor, Mica, 390 pF ±5%, lOOV
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Ceramic Disc, 10 pF ±10%, IkV, Non-Polarized
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Mica, 120 pF ±5%, 500V
Capacitor, Ceramic Disc, 10 pF ±10%, IkV, Non-Polarized
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Mylar Film, 0.022 uF ±10%, lOOV
Capacitor, Electrolytic, 33 uF, 35V
Capacitor, Mica, 22 pF ±5%, 500V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 1 uF, 50V
Capacitor, Mica, 220 pF ±5%, 500V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Canacitor Polvester 0 0022 uF ±10% lOOV
Capacitor, Mylar, 0.01 uF ±10%, lOOV
Capacitor, Silvered Mica, 100 pF ±5%, 500V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Canacitor Mica 220 D F +5% 500V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Polyester, 0.0022 uF ±10%, lOOV
Capacitor, Mylar, 0.01 uF ±10%, lOOV
Capacitor, Silvered Mica, 100 pF ±5%, 500V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Mica, 470 pF ±1%, 500V
Capacitor, Mica, 47 pF ±5%, 500V
Capacitor, Mica, 470 pF ±1%, 500V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
Capacitor, Mica, 470 pF ±1%, 500V
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 10 uF, 35V
Capacitor, Monolythic Ceramic, 0.047 uF ±5%, 50V
Capacitor, Monolythic Ceramic, 0.0047 uF ±5%, lOOV
Capacitor, Monolythic Ceramic, 0.047 uF ±5%, 50V
Capacitor, Electrolytic, 10 uF, 35V
Capacitor, Mylar Film, 0.022 uF ±10%, lOOV
Capacitor, Electrolytic, 10 uF, 35V
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 1 uF, 50V
v/ciucli.1 lAji,

m,^%A^mA%A^VA

STEAM POWERED RADIO.COM

j T . i t ? v . i . i ui,y

VXAA. y myAaA\A%my

Liv,

AWIWv m-A A.

ux^,

^^\m

tjaj

y

/ V/. W^ V V

r

023-1075
042-3922
003-1054
001-1014
003-1054
042-1222
001-1014
003-1054
003-1054
031-2243
09'? in7l?
024-3335
042-2212
003-1054
024-1064
040-2223
003-1054
031-20.8.3
031-1043
040-1022
003-1054
040-2223
003-1054
031-2033
031-1043
040-1022
003-1054
040^721
040^713
040-1721
003-1054
008-4723
m\ d d\

d n

2
2
2

m

040—1721
003-4723
003-1054
023-1076
003^733
003-4723
003-4733
023-1075
031-2243
023-1075
003-1054
024-1064

3
1

TABLE 6-4. MONOPHONIC/STEREOPHONIC RECORD CIRCUIT BOARD ASSEMBLY
910-0113/-O01 (Sheet 2 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
C77 THRU Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
C80,C82,C83
Capacitor, Electrolytic, 4.7 uF, 35V, Low Leakage
C84
Canacitor. Electrolytic. 1 uF. 50V
C85
UapaciLor, ivionoij'xnic L/eranuc, u.i ur
Capacitor, Electrolytic, 10 uF, 35V
C92,C93
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 1 uF, 50V
C96
Capacitor, Monolythic Ceramic, 0.047 uF ±5%, 50V
C98
ClOO.ClOl Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
C102
Capacitor, Electrolytic, 10 uF, 35V
C104
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
C105
Capacitor, Electrolytic, 10 uF, 35V
D1,D2
Diode, 1N4737, Zener, 7.5V ±10%, IW
D3 THRU
Diode, 1N4148, Silicon, 75V @ 0.3 Amperes
D10,D13,D14,
TYI
J302 THRU Racatitacla Sincrle Pin
J310
J311
Connector, Header, 3-Pin
P301
Receptacle, 50-Pin Dual In-line
P311
Jumper, Programmable, 2—Pin
Ol THRU 04 rimiKx
x,
urcx, ±\m x>a&e
Q5,Q6
Transistor, 2N3904, NPN, Silicon, TO-92 Case
Q7,Q8
Transistor, MPS-A14, Silicon, NPN, Darlington, TO-92 Case
R1,R2
Resistor, 10 k Ohm ±1%, 1/4W
R6
Resistor, 3.6 k Ohm ±5%, 1/4W
R8
Resistor, 1 Meg Ohm ±5%, 1/4W
R10,R11
Resistor, 22 k Ohm ±5%, 1/4W
R14
Potentiometer, 500 k Ohm ±10%, 1/2W
Resistor, 22 k Ohm ±5%, 1/4W
R15
Potentiometer, 500 k Ohm ±10%, L/2W
R16
R20,R21
Resistor, 22 k Ohm ±5%, 1/4W
R24,R25
Resistor, 665 Ohm ±1%, 1/4W
R28,R29
Resistor, 470 Ohm ±5%, 1/4W
R30,R31
Resistor, 100 k Ohm ±5%, iy4W
R32
Resistor, 10 k Ohm ±5%, 1/4W
R34
Resistor, 100 Ohm ±5%, 1/4W
R36
Resistor. 10 Mee Ohm +5%. 1/4W
Resistor, 10 Ohm ±5%, 1/4W
R37
Resistor, 33.2 k Ohm ±1%, 1/4W
R38
Resistor, 35.7 k Ohm ±1%, 1/4W
R39
R40
Resistor, 11.3 k Ohm ±1%, 1/4W
Resistor,
470 k Ohm ±5%, 1/4W
R41
Resistor,
220 k Ohm ±5%, 1/4W
R42
Resistor, 10 k Ohm ±5%, 1/4W
R43
R44
Resistor, 4.7 k Ohm ±5%, 1/4W
R45 THRU Resistor, 1 k Ohm ±1%, 1/4W
R47
Potentiometer, 1 k Ohm ±10%, 1/2W
R48
c s m

r'a'7 n a a

X Z U T O ,

O U V

7

mm %f%am\dAmA y m^^lXmyAV

NJIIEI/T

STEAM POWERED RADIO.COM

^

xxx

XICULSIBLA/I, U ^ I

x—V/IIOJIIIEI

Y . 5

6
1

003-1054
024-4753
024—1064
003—1054
023—1075
003-1054
024-1064
003^733
003-1054
023-1075
003-1054
023-1075
200-4737
203-4148
V/X.GC

X L. V/

1
3

.

X

2
2
1
1
2
1
1
1
2
1]

417-0071-001
417-0003
417-0147
340-0004
91n_n97i
211-3904
211-0014
100-1051
100-3643
100-1073
100-2253
178-5064
100-2253
178-5064
100-2253
103-6653
100-1733
100-1063
100-1053
100-1033
100-1083
100-1023
103-3325
103-3575
103-1135
100-1763
100-2263
100-1053
100-1743
100-1041
178-1044
^ X 1

t\ A l\

^^J\J

A A A

I X

A

^XU—\}Ai 1 X

AvXX

AV>iX^^

W

X

g

1
1
1
2
2
2
1
1
2
1
1
1
2
2
2
2
1

J

3
1

TABLE 6-4. MONOPHONIC/STEREOPHONIC RECORD CIRCUIT BOARD ASSEMBLY
910-0113/-001 (Sheet 3 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
R50
R52
R53
R54
R55,R56
R57
R58
R59 THRU
R61
R62
R63
R64
R65
R66
R67
R68
R69
R70
R71
R72
R73
R74
R75
R76
R77
R78
R79
R80
R81
R82
R83
R84
R86
R87,R88
R89
R90,R91
R92
R93
R94,R95
R96
R97
R98
R99
RlOO
RlOl
R102

Resistor, 100 Ohm ±5%, 1/4W
Resistor, 11.3 k Ohm ±1%, 1/4W
Resistor, 35.7 k Ohm ±1%, 1/4W
Resistor, 33.2 k Ohm ±1%, 1/4W
Resistor, 470 k Ohm +5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 4.7 k Ohm +5%, 1/4W
Resistor, 1 k Ohm ±1%, 1/4W
Resistor, 100 Ohm ±5%, 1/4W
Potentiometer, 1 k Ohm ±10%, 1/2W
Resistor, 10 Ohm ±5%, 1/4W
Resistor, 43.2 k Ohm ±1%, 1/4W
Resistor, 301 k Ohm ±1%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 53.6 k Ohm ±1%, 1/4W
Resistor, 5.1 k Ohm ±5%, 1/4W
Potentiometer, 20 k Ohm ±10%, 1/2W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 34.8 k Ohm ±1%, 1/4W
Resistor, 294 k Ohm ±1%, 1/4W
Resistor, 44.2 k Ohm ±1%, 1/4W
Resistor, 2 k Ohm ±5%, 1/4W
Potentiometer, 10 k Ohm ±10% 1/2W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 24.9 k Ohm ±1%, 1/4W
Resistor, 169 k Ohm ±1%, 1/4W
Resistor, 32.4 k Ohm ±1%, 1/4W
Resistor, 1.2 k Ohm ±5%, 1/4W
Potentiometer, 5 k Ohm ±20%, 3/4W
Resistor, 200 Ohm ±5%, 1/4W
Potentiometer, 5 k Ohm ±20%, 3/4W
Resistor, 10 k Ohm ±5%, iy4W
Resistor, 10 Ohm ±5%, 1/4W
Resistor, 100 Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 470 k Ohm ±5%, 1/4W
Resistor, 1 k Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 470 k Ohm ±5%, 1/4W
Resistor, 1 k Ohm ±5%, 1/4W
Resistor, 470 k Ohm ±5%, 1/4W
Resistor, 220 k Ohm ±5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 3.3 Meg Ohm ±5%, 1/4W
Resistor, 22 k Ohm ±5%, 1/4W

STEAM POWERED RADIO.COM

100-1033
103-1135
103-3575
103-3325
100-4763
100-1053
100-4743
100-1041
100-1033
178-1044
100-1023
103-4325
103-3061
100-1063
103-5365
100-5143
178-2054
100-1063
103-3485
103-2946
103^425
100-2043
178-1054
100-1063
103-2495
103-1696
103-3245
100-1243
178-5044
100-2033
178-5044
100-1053
100-1023
100-1033
100-1063
100^763
100-1043
100-1063
100-4763
100-1043
100-4763
100-2263
100-1053
100-3373
100-2253

TABLE 6-4. MONOPHONIC/STEREOPHONIC RECORD CIRCUIT BOARD ASSEMBLY
910-0113/-001 (Sheet 4 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
R103,R104 Resistor, 100 k Ohm ±5%, 1/4W
100-1063
2
R105
Resistor, 10 k Ohm ±5%, 1/4W
100-1053
1
R106
Potentiometer, 10 k Ohm ±10% 1/2W
178-1054
1
R107
Resistor, 100 Ohm ±5%, 1/4W
100-1033
1
RllO
Potentiometer, 10 k Ohm ±10% L/2W
178-1054
1
Rill
Resistor, 100 Ohm ±5%, 1/4W
100-1033
1
R114 THRU Resistor, 100 k Ohm ±5%, 1/4W
100-1063
4
R117
R120,R121 Resistor, 169 k Ohm ±1%, 1/4W
103-1696
2
R122
Resistor, 150 k Ohm ±5%, 1/4W
100-1563
1
R123
Resistor, 300 k Ohm ±5%, 1/4W
100-3063
1
R124
Resistor, 100 k Ohm ±5%, 1/4W
100-1063
1
R125
Resistor, 1 Meg Ohm ±5%, iy4W
100-1073
1
R132
Resistor, 5.1 k Ohm ±5%, 1/4W
100-5143
1
R133
Resistor, 51.1 k Ohm ±5%, 1/4W
100-5153
1
R136
Resistor Network, 8-10 k Ohm ±1%, 1/4W, 16-Pin DIP
226-1055
1
R138
Resistor, 3.6 k Ohm ±5%, 1/4W
100-3643
1
R139
Resistor, 220 k Ohm ±5%, 1/4W
100-2263
1
R140
Resistor, 470 k Ohm ±5%, 1/4W
100-4763
1
R141
Resistor, 1 k Ohm ±5%, 1/4W
100-1043
1
TPl
Terminal, Turret, Double Shoulder
417-1597
1
Ul
Integrated Circuit, TL074CN, Quad JFET-Input Operational
221-0074
1
Amplifier, 14-Pin DIP
U3
Integrated Circuit, NE5532AP, Dual Low Noise Operational
221-5532-001 1
Amplifier, 8-Pin DIP
U5
Integrated Circuit, MC14053B, Analog Multiplexers/Demulti220-4053
1
plexers, CMOS MSI, 16-Pin DIP
US
Integrated Circuit, MC14060B, 14-Bit Binary Counter and
220-4060
1
Oscillator, CMOS MSI, 16-Pin DIP
U7
Integrated Circuit, MC14070BCP, Quad Exclusive OR Gate,
228^071
1
CMOS, 14-Hn DIP
US
Integrated Circuit, MC14013BCP, Dual D-Type Flip-Flop, CMOS, 228-4013
1
14-Pin DIP
U9,U10
Integrated Circuit, NE5532AP, Dual Low Noise Operational
221-5532-001 2
Amplifier, 8-Pin DIP
Ull
Integrated Circuit, MC14040B, CMOS MSI, 12-Bit Binary Counter, 220-4040
1
16-Pin DIP
U12
Integrated Circuit, CD4071B, OR Gate, CMOS, 14r-Pin DIP
225-0005
1
U13
Integrated Circuit, TL072CP, Dual JFET-Input Operational
221-0072
1
Amplifier, 8-Pin DIP
U14
Integrated Circuit, NE5532AP, Dual Low Noise Operational
221-5532-001 1
Amplifier, 8-Pin DIP
U15
Integrated Circuit, MC14018BP, Presettable Divide-By-N Counter, 220-4018
1
CMOS, 16-Pin DIP
U16
Integrated Circuit, CD4071B, OR Gate, CMOS, 14-Pin DIP
225-0005
1
U17,U18
Integrated Circuit, MC14093B, Quad 2-Input NAND Schmitt
220-4093
2
Trigger, CMOS, 14-Pin DIP
U19
Integrated Circuit, CD4071B, OR Gate, CMOS, 14-Hn DIP
225-0005
1
U21
Integrated Circuit, TL072CP, Dual JFET-Input Operational
221-0072
1
Amplifier, 8-Hn DIP
U23
Integrated Circuit, TL072CP, Dual JFET-Input Operational
221-0072
1
Amplifier, 8-Hn DIP
XI
Crystal, 6.144 MHz ±0.01% from 0°C to+70°C, 30 pF Load
390-0020
1
Capacitance, HC—18 Case

STEAM POWERED RADIO.COM

TABLE 6^. MONOPHONIC/STEREOPHONIC RECORD CIRCUIT BOARD ASSEMBLY
910-0113/-001 (Sheet 5 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
XUl
XU3
XU5,XU6
XU7,XU8
XU9,XU10
XUll
XU12
XU13,XU14
XU15
XU16 THRU
XU19
XU21PCU23

1/0,04
o/,ot>
011,0100
014

Socket, 14-Pin DIP
Socket, 8-Pin DIP
Socket, 16-Pin DIP
Socket, 14-Pin DIP
Socket, 8-Pin DIP
Socket, 16-Pin DIP
Socket, 14-Pin DIP
Socket, 8-Pln DIP
Socket, 16-Pin DIP
Socket, 14-Pin DIP
Socket, 8-Pin DIP
Blank Record Circuit Board

417-1404
417-0804
417-1604
417-1404
417-0804
417-1604
417-1404
417-0804
417-1604
417-1404
417-0804
510-0113

ADDITIONAL PARTS FOR STEREOPHONIC RECORD CIRCUIT BOARD
910-0113

P I

1 P I

P i

>f

oapacitor, jLiectroiytic, lu ur, Oo v
oapacitor,
ouu proeramic,
xo%, luuv
oapacitor, jvuca,
ivionoiytnic
u.i ur xzuyo, ouv

P i

•?

Pn/inrti+rt-..
P —.1——1+—-.1

017
C18
€20
023,024
027
029
094,095
097
099
0103,0106
D11,D12
D15,D16
R3,R4
R5,R7
R9
R12,R13
R17
R18
R19
R22,R23
R26,R27
R33
R35
R49
R51
R108
R109

PAnnfllX/...

TV/Ti'/irt

OQA

1-.1? l - C z y

1 AAir

PrturtwiiTYi«rt
1 A « 1 ? 4 - 1 AXX
1 l.ir
X T — « 13—1—14>. — 4
X T — M — 1 i 4 - 1 i i — P — N — - W 1 1 — A 1 1.1? -4-OAX!/
CA1T

Oapacitor,
Oeramic
10 pr500V
±10%,
oapacitor,
u.i ur IkV,
±zu%, Won—Polarized
ouv
Oapacitor, Monoiytmc
Mica,
120Uisc,
pFoeramic,
±5%,
Oapacitor, Oeramic Disc, 10 pF ±10%, IkV, Non-Polarized
Oapacitor, Monolythic Oeramic, 0.1 uF ±20%, 50V
Oapacitor, Mylar Film, 0.022 uF ±10%, lOOV
Oapacitor, Electrolytic, 10 uF, 35V
Oapacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Oapacitor, Electrolytic, 1 uF, 50V
Oapacitor, Monolythic Ceramic, 0.047 uF ±5%, 50V
Oapacitor, Electrolytic, 10 uF, 35V
Diode, 1N4737, Zener, 7.5V ±10%, IW
Diode, 1N4148, Silicon, 75V @ 0.3 Amperes
Resistor, 10 k Ohm ±1%, 1/4W
Resistor, 3.6 k Ohm ±5%, 1/4W
Resistor, 1 Meg Ohm ±5%, 1/4W
Resistor, 22 k Ohm ±5%, 1/4W
Potentiometer, 500 k Ohm ±10%, 1/2W
Resistor, 22 k Ohm ±5%, 1/4W
Potentiometer, 500 k Ohm ±10%, 1/2W
Resistor, 22 k Ohm ±5%, 1/4W
Resistor, 665 Ohm ±1%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 100 Ohm ±5%, 1/4W
Potentiometer, 1 k Ohm ±10%, l/ZW
Resistor, 100 Ohm ±5%, 1/4W
Potentiometer, 10 k Ohm ±10% 1/2W
Resistor, 100 Ohm ±5%, 1/4W

STEAM POWERED RADIO.COM

AOO

1AlC

Ozo—1075
042—3922
003—1054
001-1014
003—1054
042-1222
001-1014
003-1054
031-2243
023-1075
003-1054
024-1064
003^733
023-1075
200-^737
203-4148
100-1051
100-3643
100-1073
100-2253
178-5064
100-2253
178-5064
100-2253
103-6653
100-1053
100-1033
178-1044
100-1033
178-1054
100-1033
AAO

1AC4

A A1

1 A1 4

AAO

1 AC 4

1
1
2
2
2
1
1
2
1
4
2
1

2
2
2

2
2
2
2
2
1
2
1
1
1
2
2
1
1
1
1
1
1

TABLE 6-4. MONOPHONIC/STEREOPHONIC RECORD CIRCUIT BOARD ASSEMBLY
910-0113/-4)01 (Sheet 6 of 6)
REF. DES.
DESCRIPTION
PART NO. QTY.
R112
R113
R118,R119
R126,R127
R128
R129
R130
R131
R134
R135
R137
R142
U2
U4
U20
U22
XU2
XU4
XU20
XU22

Potentiometer, 10 k Ohm ±10% 1/2W
Resistor, 100 Ohm ±5%, 1/4W
Resistor, 470 Ohm ±5%, 1/4W
Resistor, 169 k Ohm ±1%, 1/4W
Resistor, 150 k Ohm ±5%, iy4W
Resistor, 300 k Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 1 Meg Ohm ±5%, iy4W
Resistor, 5.1 k Ohm ±5%, 1/4W
Resistor, 51.1 k Ohm ±5%, 1/4W
Resistor Network, 8-10 k Ohm ±1%, 1/4W, 16-Pin DIP
Resistor, 1 k Ohm ±5%, 1/4W
Integrated Qrcuit, TL074CN, Quad JFET-Input Operational
Amplifier, 14-Rn DIP
Integrated Circuit, NE5532AP, Dual Low Noise Operational
Amplifier, 8-Pin DIP
Integrated Circuit, MC14053B, Analog Multiplexers/Demultiplexers, CMOS MSI, 16-Pin DIP
Integrated Circuit, TL072CP, Dual JFET-Input Operational
Amplifier, 8-Pin DIP
Socket, 14-Hn DIP
Socket, 8-Hn DIP
Socket, 16-Hn DIP
Socket, 8-Hn DIP

STEAM POWERED RADIO.COM

178-1054
100-1033
100-1733
103-1696
100-1563
100-3063
100-1063
100-1073
100-5143
100-5153
226-1055
100-1043
221-0074
221-5532-001
220-4053
221-0072
417-1404
417-0804
417-1604
417-0804

COPYHIGHr ® 1388 BROADCAST ELECTRONICS, INC.
DS2 RED

DSl GREEN

•
tlOV J 4 0 1 ^

LEFT

^?

VU

NOTES:
1, ALL RESISTORS I N OHMS, 1/4W, 5%: ALL
CAPACITORS IN MICROFARADS. UNLESS
OTHERWISE SPECIFIED.

J401^
MODE

U2
LM3916

15
V-

BLO

S I G RHI

REF
CXJT

REF
AOJ

2, LAST COMPONENTS USED: 04, 02, DS8.
U402. R15, SB, 02
_C2 K

3, COMPONETS NOT USED: S1-S3 , K(4, s->5

"o.l

RIGHT

^16

•23
J401<:

VU
LEFT

17
J401<-

RECORD

J401<-

LEVEL

J40l^

J401

•25
J401470

X X

T
J.B10
>470

LHII

>470

-J>J402

5, X REPRESENTS COMPONENTS NOT USED ON
MONO VERSION 910-0111-001,

-£>J402

J401<^
J401J402
-§>J402
I - -A>J402

J401^

-5>J402

J401<2

10^
!>J402

.21

J^01<^

COPYRIGHT © 1988 BROADCAST ELECTRONICS, INC
OWN

GREEN

RFC
J401<£FCOMMAND

X X

GREEN
X X

GREEN
X X

ELECTRONICS,
TOLERANCE
X
,XX

STEAM POWERED RADIO.COM

BY

PHOPBIETABV BIGHTS are includea in
inforiation dlsclo ed herein. This infornfi- MERK
tion is sutMitted n confidence and neittier C H K D
this document nor he informatim disclosed herein shal he reproduced or transferred to other docunents or used or disclosed to others for nanufacturing or for' M E
any other purpose except as specitically
authorized in iriting by B R O A D C A S T

I

,030

t

,015

INC.

'

DECIMAL
XXX

P R D J .

8-19-88

""!fa/WM
'=f10'

•^io -om

Ot(1

9io-0/1I-O0Z

F I N I S H

T I T L E

ANGLES 1

,005

P

,

NEXT

E L E C T R O N I C S

I N C .

S C H E M A T I C -

F R O N T
TYPE

MFG

P C B

ENGR.

U.O.S.

t

I B R O A D C A S T

-oo\

ASSY

AC910-0111

S

S I Z E

•

D W G . 6*0 .

'=fiO'Of/t-oor>

Dr90

P A N E L
9/(3-

SCALE

Ol il,

NONE

REV

9!o-o/a-ooz
SHEET

1

DF

1

3

4

COPYRIGHT © 1 9 8 8 BROADCAST ELECTRONICS, I N C .

D

D

NOTE
POSITIONS
OF PIN 1

510-0111

C

-TTTTTh
•

1

B

0

•
•

Ii
1

• •
• •

I1
11

NOTE:
1 . FOR STEREO VERSION - 910-0111 - USE
ALL COMPONENTS SHOWN.

J401
•
•

1
1

3 a
3a

II

AREA SHADED W I T H / / ^ / / ^ REPRESENTS

]

3

COMPONENTS NOT USED ON MONO VERSION 910-0111-001 .
REPRESENTS

3. AREA SHADED WITH

-LEADS OF J402 TO
BE CLIPPED CLOSE.

COMPONENTS USED "ONLY" ON PLAYBACK
VERSION - 910-0111-002.
4.

SEE SCHEMATIC AD910-0111.

5. CUT P I N 8 OE J 4 0 2 .
6. DASHED COMPONENTS MOUNTED TO
OPPOSITE SIDE SHOWN.
7. SEE B/M:

910-0111 " STEREO"
9 1 0 - 0 1 1 1 - 0 0 1 "MONO"
910-0111-002 "PLAYBACK"

COPYRIGHT © 1988 BROADCAST ELECTHONICS, INC.
PHOPRIETARY RIGHTS are included i n
information disclosed herein. This information is submitted in confidence and neither
this document nor the information d i s closed herein shall be reproduced or transferred to other documents or used or d i s closed to others for manufacturing or for
any other purpose except as specitically
authorized in writing by BROADCAST
ELECTRONICS, I N C .

A

.X i .030

2
STEAM POWERED RADIO.COM

.XXX t

MERK
MH

4-6-89

UHS

4-6-89

.005

3

SEE NOTE 7

IBROADCAST ELECTRONICS INC.
4100 N.24-m ST.. P.O.BOX 3606 QUINCY. I L 62305 217/224-9600
TELEX 250142
CABLE BBOADCAST
FAX 217/224-9607

FINISH

PROJ.

ENGR.4_5_gg

CARPENTER
4-6-89
PR BROSE

MFG .

ANGLES i 1°

MATERIAL

a-17-E

CHKD

JR

TOLERANCE DECIMAL U.O.S.
.XX 1 .015

DWN BY

NEXT

ASSY

PCB ASSEMBLYFRONT PANEL
TYPE

SIZE

A

c

MODEL

DWG.NO.
910-0111,
910-0111-001,
910-0111-002

DT-gOA

SCALE
4

2:

1

REV

B

B

TABLE 6-6. RECORD/PLAYBACK FRONT-PANEL CIRCUIT BOARD ASSEMBLY
910-0111/-001
DESCRIPTION
PART NO. QTY.
REF. DES.
DS5THRU
DS7
DS8
J401
J402
R9THRU

Rll
R12

R13
S4,S5

S6

C2
C4

D2
DS3
DS4
R2

R5
R6
R8
U2

XU2

CI
C3

Dl
DSl
DS2

Rl
R3
R4
R7
Ul

XUl

LED, Green, MV54173, Light Intensity I
LED, Red, MV57173, light Intensity G
Receptacle, Male, 13-Pin Dual In-line
Receptacle, Male, 20-Pin In-line
Resistor, 470 Ohm +5%, iy4W
Resistor, 560 Ohm ±5%, iy4W
Resistor, 1 Ohm ±5%, L'4W
Switch, Push, Illuminated, SN10601Hz,,
Contacts: SPST, N.O., 50V ac at 125 mA Nominal
(SEC and TER Switches)
Switch, Push, SN10202N1,
Contacts: SPST, N.O., 24V dc at 125 mA Nominal
(REC Switch)
Blank Circuit Board

320-0016
320-0017
417-2600
417-0200
100-4733
100-5633
100-1013
340-0141
340-0118
510-0111

ADDITIONAL PARTS FOR STEREOPHONIC RECORD/PLAYBACK
910-0111

Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 10 uF, 35V
Diode, 1N4004, Silicon, 400V @ 30 uA
LED, Green, MV54164, High Efficiency 10-Segment Bar Graph
Array
LED, Red, MV57164, High Efficiency 10-Segment Bar Graph Array
Resistor, 22 Ohm ±5%, IW
Resistor, 2.26 k Ohm ±1%, 1/4W
Resistor, 6.04 k Ohm ±1%, 1/4W
Potentiometer, 50 k Ohm ±10%, 1/2W
Integrated Circuit, LM3916N, Dot/Bar Display Driver,
18-Pin DIP
Socket, 1&-Pin DIP

417-1804

ADDITIONAL PARTS FOR MONOPHONIC RECORD/PLAYBACK
910-0111-001

Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 10 uF, 35V
Diode, 1N4004, Silicon, 400V @ 30 uA
LED, Green, MV54164, High Efficiency 10-Segment Bar Graph
Array
LED, Red, MV57164, High Efficiency 10-Segment Bar Graph Array
Resistor, 22 Ohm ±5%, IW
Resistor, 2.26 k Ohm ±1%, 1/4W
Resistor, 6.04 k Ohm ±1%, iy4W
Potentiometer, 50 k Ohm ±10%, 1/2W
Integrated Circuit, LM3916N, Dot/Bar Display Driver,
18-Pin DIP
Socket, 18-Hn DIP

STEAM POWERED RADIO.COM

003-1054
023-1076
203-4004
320-4164
320-7164
120-2223
103-2264
103-6044
177-5054
220-3916

003-1054
023-1076
203-4004
320-4164
320-7164
120-2223
103-2264
103-6044
177-5054
220-3916

417-1804

1
1
1
3
1
1
2

TABLE 6-5A. PLAYBACK FRONT-PANEL CIRCUIT BOARD ASSEMBLY
910-0111-002
DESCRIPTION
PART NO. QTY.
REF. DES.
DS5THRU LED, Green, MV54173, Light Intensity I
320-0016
DS7
J401
Receptacle, Male, 13-Pin Dual In-Line
417-2600
J402
Receptacle, Male, 20-Pin In-Line
417-0200
R9THRU
Resistor, 470 Ohm ±5%, iy4W
100-4733
Rll
Blank Front-Panel Circuit Board
510-0111

STEAM POWERED RADIO.COM

STEAM POWERED RADIO.COM

I

455-0048

455-0048

REF

420-6104
423-6002
2

PLCS

0.05
5

ADD

407-014-7

REF

PLCS

UNDER Y l
510-9005

NOTES:

1.

PROPRIETARY
R I G H T S ARE DWN BY
INCLUDED IN INFORMATION DISCLOSED HEREIN.
M. HAYDEN
THIS INFORMATION I S SUBMITTED I N CONFIDENCE AND NEITHER THIS DOCUMENT NOR THE
INFORMATION DISCLOSED HEREIN SHALL BE R E - CHKD
PRODUCED OB TRANSFEHHEO TO OTHER DOCUMENTS OR USED OH DISCLOSED TO OTHERS FOR
MANUFACTURING OH FOR ANY OTHER PURPOSE
EXCEPT AS S P E C I F I C A L L Y AUTHORIZED I N
MRITING BY BROADCAST ELECTHONICS. INC.

TE
-19-86

PROJ

i743

P

.XX I .015

STEAM POWERED RADIO.COM

.XXX t .005
ANGLES I

1°

S0910-9005.

J

BROADCAST

INC.

ELECTRONICS I N C .

SEE B/M

FINISH

4100

N. 24TH ST.
QUINCY. I L .
TELEX 2 5 0 1 4 2
CABLE

TITLE

P
M O T O R

ENGR

TYPE

TOLERANCE DECIMAL U.O.S.
.X I .030

NO.

COPYRIGHT © 1986 BROADCAST ELECTRONICS.

MATERIAL

910-9005

-. J,

SEE SCHEMATIC

NEXT

ASSY

A
MODEL

SIZE

0

C

B

52305 2 1 7 / 2 2 4 - 9 6 0 0
-BHOADCAST'

A S S E M B L Y

C O N T R O L

B O A R D

DWG.NO.

P T 9 0

HFV
9

1

SCALE

0
2

/

9

0
1

0

5

SHEET

1 OF 1

TABLE 6-6. MOTOR CONTROL CIRCUIT BOARD ASSEMBLY
910-9005 (Sheet 1 of 3)
REF. DES.

DESCRIPTION

PART NO. QTY.

Capacitor, Monolythic Ceramic, 0.1 uF±20%, 50V
CI
02
Capacitor, Electrolytic, 10 uF, 35V
03,04
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
05,06
Capacitor, Silvered Mica, 100 pF ±5%, 500V
07 08
PnnflritAr Mrtnnlv+hir Pftrnmir ft 1 iiF+9ft<^
LAapacitor,
urXllCziUvfc,
iuuv /v, V
V^ct
^CLClLUI, jviyiar
ITXUllUijriim,
/LILLC \j,zz
, V/.X UJ;lOOV
Capacitor,
Mylar
Film,
0.01clXuF
±10%,
CIO
Capacitor, Electrolytic, 1 uF, 50V
Oil
012,013,014 Capacitor, Mylar
Monolythic
0.1 uFlOOV
±20%, 50V
015
Film,Ceramic,
0.01 uF ±10%,
016 THRU Canacitor Monolvthic Ceramic 0 1 uF +20% 50V
019
Capacitor, Mylar Film, 0.01 uF ±10%, lOOV
O20
021
Capacitor, Electrolytic, 10 uF, 35V
022
Capacitor, Monolythic Ceramic, 0.1 uF ±20%, 50V
Capacitor, Electrolytic, 10 uF, 35V
023,024,025
026
Capacitor, Electrolytic, 3.3 uF, 50V
Capacitor,
Monolythic Ceramic, 0.1 uF ±20%, 50V
027
028
Capacitor, Electrolytic, 2.2 uF, 25V
029
Capacitor, Electrolytic, 33 uF, 35V
030,031
Capacitor, Mica, 22 pF ±5%, 500V
C V > THRU
OnAftAifnT TWAnAlv+lrip r^Afdmip ft 1 nTT* 4-Oft^ '^ftV
037
038
Capacitor, Electrolytic, 10 uF, 35V
riflnflritAr
IVfnnnlvfhiV nprfunip
v>t;L cxiiuu,ftv.x1 uP+00*^ KftV
ouv
039 C40
041
Canacitor Electrolytic 100 uF 50V
1 iTT -X-OACK. KA\7
Capacitor, Ceramic, 0.001 uF ±10%, 200V
oapacitor,
Monoiytmc
ur
043THRU W i . L/ioue,
rjl
iiN^i^o,
oiiicon,ueramic,
/ov tsi u.ou.iAmperes
D5
Diode, 1N34, Germanium, 8.5 mA, lOV
D6 THRU D8, Diode, 1N4148, Silicon, 75V @ 0.3 Amperes
DllTHRU
D14
A4-A*.
Ofl^^^A
T
J602
Connector. Header 8—Pin Dual In—line
v-'Onnector, neaaer,
in—Liine
Ql
Transistor,
T1P120,zu—nn
NPN Darlington-Connected
Silicon Power,
65W @ 25*0 Case
Q2,Q3,Q4
Transistor, T1P32A, Silicon, PNP, TO-220 AB Case
Q5,Q6,Q7
Transistor, MPS-A14, Silicon, NPN Darlington, TO-92 Case
Q8
Resistor, 2.7 k Ohm ±5%, 1/4W
Rl
Transistor,1002N3906,
Silicon,
R2
Resistor,
Ohm ±5%,
iy4WPNP, TO-92 Case
R3
Resistor, 100 k Ohm ±5%, 1/4W
R5,R6
Resistor, 10 k Ohm ±5%, 1/4W
R7,R8,R9
Resistor, 22.1 k Ohm ±1%, 1/4W
Resistor, 470 k Ohm ±5%, 1/4W
RIO
Resistor, 330 k Ohm ±5%, iy4W
Rll
Resistor, 30 k Ohm ±5%, iy4W
R12
Resistor, 330 k Ohm ±5%, iy4W
R13
Resistor, 33 k Ohm ±5%, iy4W
R14
/Hl1

KVtJ

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ma. ^ ^

^

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j-£A\t

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003-1054
023-1076
003-1054
040-1022

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031-1043
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024-1064
003-1054
031-1043
003-1054
031-1043
023-1076
003-1054
023-1076
020-3363
003-1054
013-2064
024-3374
040-2213
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020-1083
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030-1033
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417-1603
210-0120
218-0032
211-0014
210-3906
100-2743
100-1033
100-1063
100-1053
103-2211
100-4763
100-3363
100-3053
100-3363
100-3353
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TABLE 6-6. MOTOR CONTROL CIRCUIT BOARD ASSEMBLY
910-9005 (Sheet 2 of 3)
REF. DES.
R15
R16
R17
R18
R19,R20
R21
R22
R23
R24
R25,R26
R27
R28
R29,R30
R31
R32,R33,R34
R35
R36
R37,R38
R39
R40
R41
R42
1143
R44
R45
R46
R47
R48
R50
R51,R52
R54
R56
R57
R58
R59,R60,R61
R62
R63
R64
R65
R66,R67
R68,R69,R70
R71
Ul
U2
U3

DESCRIPTION
Resistor, 1 k Ohm ±5%, 1/4W
Potentiometer, 500 Ohm, 1/2W
Resistor, 1 Ohm+1%, IW
Resistor, 10 k Ohm ±5%, iy4W
Resistor, 100 k Ohm ±5%, iy4W
Resistor, 1 Meg Ohm ±5%, iy4W
Resistor, 10 Meg Ohm ±5%, 1/4W
Resistor, 51k Ohm ±5%, iy4W
Resistor, 220 k Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 1 Meg Ohm ±5%, 1/4W
Resistor, 1 k Ohm ±5%, iy4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 5.1 k Ohm ±5%, 1/4W
Resistor, 470 Ohm ±5%, 1/2W
Resistor, 47 Ohm ±5%, 1/2W
Resistor, 470 Ohm +5%, 1/2W
Resistor, 1 Meg Ohm ±5%, 1/4W
Resistor, 1 k Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 24 k Ohm ±5%, iy4W
Resistor, 10 Meg Ohm +5%, 1/4W
Resistor, 10 k Ohm ±5%, iy4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 1 Meg Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 510 k Ohm ±5%, 1/4W
Resistor, 10 Meg Ohm ±5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 10 Meg Ohm ±5%, 1/4W
Resistor, 68 k Ohm ±5%, iy4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 1 Meg Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 300 Ohm ±5%, 2W, WAV
Resistor, 316 Ohm ±1%, 1/4W
Resistor, 100 Ohm ±1%, 1/4W
Resistor, 100 k Ohm ±5%, 1/4W
Resistor, 10 k Ohm ±5%, 1/4W
Resistor, 100 k Ohm ±5%, iy4W
Resistor, 9.1 k Ohm ±5%, y4W
Integrated Circuit, LM317T, Adjustable Positive Voltage
Regulator, 1.2V to 37V, 1.5 Ampere, TO-220 Case
Integrated Circuit, LM358N, Dual Operational Amplifier,
8-Pin DIP
Integrated Circuit, MC14528BCP, Dual Monostable Multivibrator, CMOS, 16-Pin DIP

STEAM POWERED RADIO.COM

PART NO.
100-1043
178-5030
120-1013
100-1053
100-1063
100-1073
100-1083
100-5153
100-2263
100-1063
100-1073
100-1043
100-1063
100-1053
100-5143
110-4733
110-4723
110-4733
100-1073
100-1043
100-1063
100-2453
100-1083
100-1053
100-1063
100-1073
100-1063
100-5163
100-1083
100-1053
100-1083
100-6853
100-1063
100-1073
100-1063
130-3004
103-3163
100-1031
100-1063
100-1053
100-1063
100-9143
227-0317
221-0358
224-4528

QTY.

TABLE 6-6. MOTOR CONTROL CIRCUIT BOARD ASSEMBLY
910-9005 (Sheet 3 of 3)
REF. DES.

DESCRIPTION

PART NO. QTY.

Integrated Circuit, MC14011BCP, Quad 2-Input NAND Gate,
CMOS, 14-Pin DIP
Integrated Circuit, MC54/74HC195, 4-Bit Universal Shift
Redster. CMOS 16-Pin DIP
Integrated Circuit, LM358N, Dual Operational Amphfier,
8-Pin DIP
Integrated Circuit, IVlVyJ.tV±VIJV/i
LM339AN, Quad
Comparator,
14-Pin DIP
Ttif
X l l l f O ^ l a t e U V / J l C U l b , MPIZnAnTtPP
,
v/UUlll/ei,
CMOS, 16-Pin DIP
CMOS, 14-Pin DIP
UlO
Intecrated Circuit MC14053B Analoe MultiDlexers/DemultiIntegrated Circuit, MC14060B, 14-Bit Binary Counter and
Ull
Oscillator,CMOS,
CMOS,
16-PinDIPDIP
plexers,
16-Pin
Integrated
Circuit,
CD4027BE,
Dual J-K Master-Slave FlipU12
Flop, CMOS, 16-Pin DIP
Integrated Circuit, MC14052B, Dual 4-Channel Analog MultiU13
plexers/Demultiplexers, CMOS, 2P4T, 16-Pin DIP
Integrated
Circuit, MC14040BCP, 12-Bit Binary Counter,
U14
CMOS, 16-Pin DIP
U15
Integrated Circuit, ULN2004, 7 NPN Darhngton Driver Pack,
XU2
Socket,
8—Pin
16—Pm
DIPDIP
XU3
Socket, 16-Pin DIP
XU4
Socket, 14r-Pin DIP
XU5
Socket, 16-Pin DIP
XU6
Socket, 8-Pin DIP
XU7
Socket, 14-Pin DIP
XU8
Socket, 16-Pin DIP
XU9
Socket, 14-Pin DIP
XUlO THRU Socket, 16-Pin DIP
XU15
Crystal, 460.80 kHz ±0.01% from 0°C to 50°C, R/DT Cut,
Yl
NE33D Case
Blank Circuit Board
U4
U5
U6
U7
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220-0195
221-0358
221-0339
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220-4053
220-4060
225-0003
220-4052
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226-2004
417-0804
417-1604
417-1404
417-1604
417-0804
417-1404
417-1604
417-1404
417-1604
390-0019
510-9005

FIGURE 6-7. DT-90A RACK ASSEMBLY DIAGRAM

STEAM POWERED RADIO.COM

PRODUCT WARRANTY
LIMITED T W O YEAR

While this warranty gives Purchaser specif Ic legal rights, which terminate two (2) years (one year on turntable,
cartridge and blower motors) from the date of shipment, Purchaser may also have other rights which vary state
to state.
Broadcast Electronics, Inc. ("Seller") hereby warrants cartridge machines, consoles, and other new
Equipment manufactured by Seller against any defects in material or workmanship at the time of delivery
thereof, that develop under normal use within a period of two (2) years (one year for turntable, cartridge and
blower motors) from the date of shipment, as such term Is defined herein. Other manufacturer's and suppliers'
Equipment and services. If any. Including electronic tubes, solid state devices, transmission line, antennas,
towers, related equipment and installation and erection services, shall carry only such manufacturer's or suppliers' standard warranty. This warranty extends to the original user and any subsequent purchaser during the
warranty period. Seller's sole responsibility with respect to any equipment or parts not conforming to this warranty is to replace such equipment or parts upon the return thereof F.O.B. Seller's factory or authorized repair
depot within the period aforesaid.
In the event of replacement pursuant to the foregoing warranty, only the unexpired portion of the warranty from the time of the original purchase will remain In effect for any such replacement. However, the warranty period will be extended for the length of time that Purchaser Is without the services of the Equipment due
to Its being serviced pursuant to this warranty. The terms of the foregoing warranty shall be null and void If the
Equipment has been altered or repaired without specific written authorization of Seller, or If Equipment Is operated under environmental conditions or circumstances otherthan those specif Ically described In Seller's product literature or Instruction manual which accompany the Equipment. Seller shall not be liable for any expense
of any nature whatsoever incurred by the original user without prior written consent of Seller.
Seller shall not be liable to Purchaser for any and all Incidental or consequential damages for breach of
either expressed or Implied warranties. However, some states do not allow the exclusion or limitation of Incidental or consequential damages, sothe above limitation or exclusion may not apply to Purchaser. All express
and Implied warranties shall terminate at the conclusion of the period set forth herein. Any card which is enclosed with the equipment will be used by Seller for survey purposes only.
If the Equipment Is described as used. It Is sold as Is and where Is. If the contract covers equipment not
owned by Seller at this date. It Is sold subject to Seller's acquisition of possession and title.

EXCEPT AS SET FORTH HEREIN, AND EXCEPT AS TO TITLE, THERE ARE NO WARRANTIES, OR
ANY AFFIRMATIONS OF FACT OR PROMISES BY SELLER, WITH REFERENCE TO THE EQUIPMENT,
OR TO MERCHANTABILITY, FITNESS FOR A PARTICULAR APPLICATION, SIGNAL COVERAGE, INFRINGEMENT, OR OTHERWISE, WHICH EXTEND BEYOND THE DESCRIPTION OF THE EQUIPMENT
ON THE FACE HEREOF.

BROADCAST ELECTRONICS, INC.

L

STEAM POWERED RADIO.COM

4100 North 24th Street, P.O. Box 3606, Quincy, Illinois 62305

•ADCAST

ELECTRONICS,

STEAM POWERED RADIO.COM

INC.

4100N.24THSTREET

P.O. BOX 3606 QUINCY. IL 62305 • TELEX 2 5 0 1 4 2 / C A B L E ' B R O A D C A S T '

(217) 224-9600



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : Yes
Author                          : Broadcast Electronics
Create Date                     : 2016:10:09 14:21:48-07:00
Keywords                        : Broadcast, Electronics, Dura, Trak, 90A, Series, Cartridge, Machine, Manual
Modify Date                     : 2016:10:09 15:25:24-07:00
Has XFA                         : No
XMP Toolkit                     : Adobe XMP Core 5.6-c015 84.158975, 2016/02/13-02:40:29
Metadata Date                   : 2016:10:09 15:25:24-07:00
Creator Tool                    : Adobe Acrobat Pro DC 15.17.20053
Format                          : application/pdf
Title                           : Broadcast Electronics Dura Trak 90A Series Cartridge Machine Manual
Description                     : Broadcast Electronics Dura Trak 90A Series Cartridge Machine Manual
Creator                         : Broadcast Electronics
Subject                         : Broadcast Electronics Dura Trak 90A Series Cartridge Machine Manual
Document ID                     : uuid:f26efc46-2054-4773-bf5b-620689f3a7e1
Instance ID                     : uuid:7d793406-1b8a-4b7b-a736-6d45bdd564b2
History Action                  : editedScannedDoc
History When                    : 2016:10:09 14:37:08-07:00
History Parameters              : Page:44
Producer                        : Adobe Acrobat Pro DC 15.17.20053
Page Count                      : 124

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