ALPHA 10/10P SERVICE MANUAL AV50 Arcam 10P Pwr Sm
User Manual: ALPHA AV50
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ALPHA 10/10P SERVICE MANUAL ALPHA 10/10P SERVICE MANUAL CIRCUIT DESCRIPTION The mother PCB is common for both the A10 and A10P with the exception of the input mode switch and pre-amp output mute relay which are only fitted to the A10 and the power/standby LED and links to parallel the input connections to what would otherwise be the pre-amp output for use with a mono link. The amplifier is based on the D290/Alpha 9 design but with lower gain, a higher current and higher voltage driver stage and a high power output stage. The current servo has been improved over the Alpha 9 to be output device independent. A micro supervises the amplifier state, switch state and remote control functions. Provision is made for an additional 3rd channel PCB to be added with power supply and protection circuitry access. Input stage The input connections are taken either from the pre-amp connector, LK12X, or the external power amp input on the A10 depending on the position of SW1. On the A10P, the input is taken from the external power amp input only with provision for a mono shorting link by having two parallel input connectors. On the A10, there is a mute relay on the pre-amp outputs which are always connected to the pre-amp connector, LK12X. The signal is passed through a low pass filter with a -3dB point of 550KHz at normal gain and 740KHz at low gain. The gain is selected by SW2. C72 and C74 are d.c. blocking capacitors with a -3dB point of 0.7Hz. A d.c. error correction current is injected into the base of Q19 and 26 from the voltage servo Z3 and 4, to null any voltage offset at the amplifier output. The input and voltage amplifier stages both run off regulated 15 Volt suppies. The input stage is an NPN differential input, Q18, 19, 25 and 26, with an adjustable current source, Q21 and 28 which sets the quiescent current through all the stages but specifically the output stage. C37, R58, C49 and R66 keep the input stage and voltage amplifier stable. Q52, 53, 54 and 55 form a current mirror to ensure that the differential input is balanced during normal operation. Voltage Amplifier The voltage amplifier consists of another differential pair, Q48, 49, 50 and 51. Q48 and 50 are the positive pulling side of the voltage amplifier output and Q49 and 51 pull negative via a current mirror Q8, 9, 10 and 11. The network C12, 36, R74 and 77 give the current mirror gain to compensate for the fact that Q49 and Q51 is only driven from the lowimpedance side of the input stage current mirror. The network ensures a fast, symmetrical slew rate of the voltage amplifier stage. Network C69, 70, R172, 174 ensure the overall stability of the amplifier by reducing the open loop gain at high frequencies. Second Voltage Amplifier and Driver Stage Q33, 36, 41 and 44 are the next voltage amplifier stage with feedback applied from the output coupled to their emitters. This stage runs on the full supply rail voltages and splits the level shifts the signal via Q2, 3, 5 and 6 to drive the gates of the output MOSFETs, Q13, 14, 15 and 16. Q2 and 3 simply buffer the inverted signal at the collector of Q36 to drive the low side MOSFETs, Q13 and 15. Q5 and 6 invert the inverted signal at the collector of Q41 and Q44 to drive the high side MOSFETs, Q14 and 16. To ensure that the high side drive is able to swing far enough to ensure the high side MOSFETs can be driven to saturation, a bootstrap, C5, D41 R57, C78 and D22 boosts the driver stage power supply during positive excursions of the amplifier output. This is inactive at low output voltage swings as any distortion induced by the network would be more audible at such levels. Output Stage Both the high and low side output devices feature over-current protection, Q17, 23, 24, 30 which clamps the gate of the MOSFET it protects. A high current is permitted through the MOSFET for a few milliseconds after which time the current is throttled down to about 10A peak. A second current sensing network, Q32 and Q35 activates the over-current protection cut-out if the low side is current limiting for too long, a few hundred milliseconds. The current sensing resistors do not reduce the transconductance of the MOSFETs because the driver stage is referenced to the MOSFET source. This means that the current through the driver stage is also sensed but this is insignificant as fas as over-current protection sensing is concerned. Auto-bias 1 ALPHA 10/10P SERVICE MANUAL Figure 1Block Diagram of Power Amplifier The bias is regulated in two modes, one where these is no signal and one when signal is being split between the high and low side MOSFETs when driving a alternating signal into a load. Under static conditions, Z8 simply compares the sensed current, which includes the driver stage current, with a d.c. mode reference of 13mV. The sense resistor is 0.11 so this corresponds to a current of about 120mA, some of which is driver current. The current through the MOSFETs is about 80mA at this point. The comparator output is level shifted to drive the integrating current servos Z3 and 4. This adjusts the amplifier current so that, on average, the bias level is held at the reference point. Under dynamic conditions, the low side drive will definitely be conducting more current than the reference (80mA) for half the signal cycle and will be switched off for the other half. The result is a rectangle wave output from the comparator, Z4. When the output stage is biassed correctly (class AB operation) the comparator output toggles when the current through the sense resistor for the -ve MOSFET is equal to the d.c. mode static reference level and at the half way point of the signal. The result is a perfect square wave output from the comparator. Under these conditions, the +ve MOSFET is also conducting the same amount of current at this point. If the bias level is lower than the reference, say, at zero (class B operation) then the -ve MOSFET will spend slightly less than half the time conducting at or above the reference level resulting in a rectangle wave output from the comparator at a duty cycle slightly less than 50%. If the bias level is higher than the reference then the -ve MOSFET will spend slightly more than half the time conducting at or above the reference level resulting in a rectangle wave output at a duty cycle slightly more than 50%. The change in duty cycle away from 50% causes the integrator, Z3 and Z4 to adjust the bias level via the bias adjusting transistors, Q22 and 29. The integrator has a reference, the a.c. mode dynamic reference, for a bias point slightly higher than for a 50% duty cycle. This eliminates the possibility of the bias being slowly throttled due to component tolerance mismatch resulting in a reference which would pull the servo down. A high dynamic bias reference level simply stabilises the bias slightly higher than the static reference but a low dynamic reference causes the bias to drift down to complete throttle. This system works if the signal is a.c., symmetrical and is not a rectangle wave. Certainly, only a.c. signals are passed Sense Resistor -ve MOSFET Measured Current (blue) Other MOSFET Comparitor Output 49% 50% Bias correct Under Biassed Figure 2 Auto-bias under dynamic conditions 2 52% Over Biassed ALPHA 10/10P SERVICE MANUAL through the amplifier due to C72 and 74 d.c. blocking capacitors and on average the signal will be symmetrical. Any short-term asymmetry will be ironed out by the long time constant of the integrator. Main Power Supply The main power supply is regulated in two stages. First it is pre-regulated by Q1 and 4 to about 11V less than the main supply rails. This supply is made available to an option board. The maximum load on these supplies is 150mA for less than 2W dissipation in Q1 and 4. These supplies are then regulated to +/-15V by Z1 and 2. These supplies are used by the input stages of the power amplifiers including any 3rd channel board, the pre-amplifier board and an optional phono amplifier board. The positive voltage regulator, Z1, has a larger heatsink than Z2 because the phono board consumes much more current from the positive rail than from the negative rail. Control Micro The control micro performs the following functions... ‚ Switches the amplifier on or off, ‚ Mutes the speakers #1 or #2 or the pre-amp output, ‚ Monitors the heatsink temperature, ‚ Monitors RF content of speaker outputs, ‚ Handles the remote bus and infra red remote input, ‚ Reports fault conditions to the main display and LED, ‚ Reads the speaker and power switch positions. The control micro runs of the constant power supply from standby transformer, TX2. This enables the amplifier to be switched on or off remotely from the remote bus or, in the case of the integrated amplifier, from an infra red remote control. This power supply is intended to supply all the digital circuitry in the amplifier including any option boards. This is supplied at 8V to the other boards where it will be locally regulated to 5V as required. The micro communicates with the display board via a multi-master I2C bus. This bus is used to report amplifier and power status to the display micro and remote control commands received. It is also possible for the display micro to control functions on the power amplifier board. The option board also uses this bus to receive any remote control commands and communicate with the display micro. The external remote bus handles raw information from infra red sensors with no demodulating. The remote bus input can be echoed to the output through a buffer circuit. The incoming signal is demodulated by Z13. Raw signal is also sent to the micro interrupt line, pin 12, for assessing the noise on the remote bus. In addition, any d.c. signal on the remote bus is sensed on pin 2 of the micro in when it is not being used as an output to mute the hardware remote echo buffer. The micro must modulate any output it sends to this bus with a carrier (37KHz). The output will drive one or two series infra red LEDs directly. The list below shows how various fault conditions can be deduced simply from the Power LED behaviour. Figure 3 Micro Block Diagram 3 ALPHA 10/10P SERVICE MANUAL • On power up, the protection should be engaged. This is checked after 3 seconds on pin 9 of Z9. If it isn't happening, the unit shuts down with flashing red. If the protection does not clear after about 16 seconds on power-up the unit shuts down to flashing red. This is usually caused by a voltage offset. Any main amp power loss detected on pin 26 after power-up causes a shut down to flashing red. Any RF detected on pin 3 results on immediate shut down to flashing red. Any protection fault detected after power up on pin 9 results in a flashing amber LED for about 16 seconds max. If it has not cleared by then the unit is shut down to flashing red. Protection faults are caused by voltage offset or over-current. Over-current should latch resulting in a shut down after 16 seconds. Voltage offsets should clear themselves if brief. A temperature fault on pin 25 results in the power LED flashing slow amber and can last indefinitely until it clears. When it clears the flashing will speed up until the protection times back in. • • • • • ALPHA 10P POWER AMP MAIN BOARD PARTS LIST Ref No. Description Part No C31 MLC 100N 50V X7R 10% SM 2C410 C1 ELST 100U 100V 2N710B C32 ELST 22U 63V 2N622 C2 ELST 100U 100V 2N710B C33 ELST 22U 63V 2N622 C3 MLC 100N 50V X7R 10% SM 2C410 C34 MLC 100N 50V X7R 10% SM 2C410 C4 ELST 100U 100V 2N710B C35 PPRO 150P 5% 63V RA 2D115 C5 ELST 100U 100V 2N710B C36 PPRO 4N7 63V 5% RA 2D247N C6 ELST 22U 63V 2N622 C37 PPRO 1N0 5% 63V RA 2D210 C7 ELST 10U 50V 2N610 C38 PPRO 680P 63V 5% RA 2D168 C8 ELST 22U 63V 2N622 C39 PPRO 680P 63V 5% RA 2D168 C9 ELST 10U 50V 2N610 C40 MLC 10N 50V X7R 10% SM 2C310 C10 ELST 10U 50V 2N610 C41 MLC 10N 50V X7R 10% SM 2C310 C11 ELST 1U0 50V 2N510 C42 MLC 10N 50V X7R 10% SM 2C310 C12 PPRO 4N7 63V 5% RA 2D247N C43 MLC 10N 50V X7R 10% SM 2C310 C13 SUPPR CAP 4N7 250V 2K247 C44 SUPPR CAP 4N7 250V 2K247 C14 PPRO 150P 5% 63V RA 2D115 C45 ELST 10U 50V 2N610 C15 ELST 10U 50V 2N610 C46 SUPPR CAP 4N7 250V 2K247 C16 ELST 10U 50V 2N610 C47 SUPPR CAP 4N7 250V 2K247 C17 ELST 10U 50V 2N610 C48 ELST 3M3 25V 2N833 C18 ELST TNC 10m 63V RA 40mm 2N910A C49 PPRO 1N0 5% 63V RA 2D210 C19 ELST TNC 10m 63V RA 40mm 2N910A C50 ELST 1U0 50V 2N510 C20 PPRO 4N7 63V 5% RA 2D247N C51 ELST 220U 16V 2N722 C21 PPRO 4N7 63V 5% RA 2D247N C52 ELST 220U 16V 2N722 C22 ELST 100U 25V 2N710 C53 ELST 220U 16V 2N722 C23 ELST 100U 25V 2N710 C54 ELST 220U 16V 2N722 C24 ELST 100U 25V 2N710 C55 PCRB 100N 100V 10% RA 5mm 2H410 C25 ELST 100U 25V 2N710 C56 PCRB 100N 100V 10% RA 5mm 2H410 C26 ELST 100U 25V 2N710 C57 PCRB 100N 100V 10% RA 5mm 2H410 C27 ELST 100U 25V 2N710 C58 PCRB 100N 100V 10% RA 5mm 2H410 C28 MLC 470P 100V NPO 5% SM 2C147 C59 PCRB 100N 100V 10% RA 5mm 2H410 C29 MLC 470P 100V NPO 5% SM 2C147 C60 PCRB 100N 100V 10% RA 5mm 2H410 C30 MLC 470P 100V NPO 5% SM 2C147 C61 PPRO 100P 63V 5% RA 2D110N 4 ALPHA 10/10P SERVICE MANUAL C62 PPRO 100P 63V 5% RA 2D110N D5 ZENER 10V 400MW 3C11004 C63 PPRO 150P 5% 63V RA 2D115 D6 ZENER 10V 400MW 3C11004 C64 PPRO 330P 5% 63V RA 2D133 D7 ZENER 10V 400MW 3C11004 C65 PPRO 150P 5% 63V RA 2D115 D8 ZENER 10V 400MW 3C11004 C66 PPRO 330P 5% 63V RA 2D133 D9 ZENER 10V 400MW 3C11004 C67 PEST 15N 63V 5% 2K315 D10 RECTIFIER 6A40 6A 400V 3B6A40 C68 PEST 15N 63V 5% 2K315 D11 RECTIFIER 6A40 6A 400V 3B6A40 C69 PSTY 56P 160V ENCAP 1PF% 2F056 D12 RECTIFIER 6A40 6A 400V 3B6A40 C70 PSTY 56P 160V ENCAP 1PF% 2F056 D13 RECTIFIER 6A40 6A 400V 3B6A40 C71 ELST NON POLAR 10UF 35V 2U610 D14 RECTIFIER 1N4003F 1A 200V 3B4003 C72 ELST NON POLAR 10UF 35V 2U610 D15 RECTIFIER 1N4003F 1A 200V 3B4003 C73 ELST NON POLAR 10UF 35V 2U610 D16 SSDIODE 1N4148 75V 3A4148 C74 ELST NON POLAR 10UF 35V 2U610 D17 SSDIODE 1N4148 75V 3A4148 C75 PEST 47N 63V 10% 2K347 D18 RECTIFIER 1N4003F 1A 200V 3B4003 C76 PEST 47N 63V 10% 2K347 D19 RECTIFIER 1N4003F 1A 200V 3B4003 C77 PEST 47N 63V 10% 2K347 D20 SSDIODE 1N4148 75V 3A4148 C78 PEST 47N 63V 10% 2K347 D21 RECTIFIER 1N4003F 1A 200V 3B4003 C79 ELST NON POLAR 10UF 35V 2U610 D22 RECTIFIER 1N4003F 1A 200V 3B4003 C80 ELST NON POLAR 10UF 35V 2U610 D23 RECTIFIER 1N4003F 1A 200V 3B4003 C81 MLC 22P 100V NPO 5% SM 2C022 D24 RECTIFIER 1N4003F 1A 200V 3B4003 C82 MLC 22P 100V NPO 5% SM 2C022 D25 RECTIFIER 1N4003F 1A 200V 3B4003 C83 ELST 100U 25V 2N710 D26 SSDIODE 1N4148 75V 3A4148 C84 MLC 100N 50V X7R 10% SM 2C410 D27 RECTIFIER 1N4003F 1A 200V 3B4003 C85 MLC 100N 50V X7R 10% SM 2C410 D28 SSDIODE 1N4148 75V 3A4148 C86 MLC 100N 50V X7R 10% SM 2C410 D29 ZENER 4V7 400MW 3C04704 C87 MLC 100N 50V X7R 10% SM 2C410 D30 SSDIODE 1N4148 75V 3A4148 C88 MLC 100N 50V X7R 10% SM 2C410 D31 SSDIODE 1N4148 75V 3A4148 C89 MLC 100N 50V X7R 10% SM 2C410 D32 SSDIODE 1N4148 75V 3A4148 C90 ELST 10U 50V 2N610 D33 SSDIODE 1N4148 75V 3A4148 C91 PPRO 680P 63V 5% RA 2D168 D34 SSDIODE 1N4148 75V 3A4148 C92 MLC 10N 50V X7R 10% SM 2C310 D35 SSDIODE 1N4148 75V 3A4148 C93 MLC 1N0 50V X7R 10% SM 2C210 D36 SSDIODE 1N4148 75V 3A4148 C94 MLC 10N 50V X7R 10% SM 2C310 D37 SSDIODE 1N4148 75V 3A4148 C95 ELST 10U 50V 2N610 D38 SSDIODE 1N4148 75V 3A4148 C96 ELST 10U 50V 2N610 D39 ZENER 12V 3W SM 3C03C12 C97 MLC 100N 50V X7R 10% SM 2C410 D40 SSDIODE 1N4148 75V 3A4148 C98 MLC 10N 50V X7R 10% SM 2C310 D41 ZENER 12V 3W SM 3C03C12 C99 CERD 10PF 63V 10% 2A010 D42 SSDIODE 1N4148 75V 3A4148 C100 CERD 10PF 63V 10% 2A010 D43 ZENER 5V6 400MW 3C05604 D1 ZENER 15V 400MW 3C11504 D44 ZENER 24V 3W SM 3C03C24 D2 ZENER 15V 400MW 3C11504 D45 RECTIFIER 1N4003F 1A 200V 3B4003 D3 ZENER 10V 400MW 3C11004 D46 SSDIODE 1N4148 75V 3A4148 D4 ZENER 10V 400MW 3C11004 D47 SSDIODE 1N4148 75V 3A4148 5 ALPHA 10/10P SERVICE MANUAL D48 ZENER 4V7 400MW 3C04704 Q10 TRANS LF SS N SM BC846B 4A846B D49 SSDIODE 1N4148 75V 3A4148 Q11 TRANS LF SS N SM BC846B 4A846B D50 ZENER 5V6 400MW 3C05604 Q12 TRANS LF SS N SM BC847B 4A847 F4 FUSE 20mm 2.5A AS C12256 Q13 TRANS POWER MOSFET IRPF360LC 4K360 F4 INS COVER PCB FUSEHOLDER F022 Q14 TRANS POWER MOSFET IRPF360LC 4K360 F4 FUSEHOLDER 20mm PCB 8S004 Q15 TRANS POWER MOSFET IRPF360LC 4K360 F5 FUSEHOLDER 20mm PCB 8S004 Q16 TRANS POWER MOSFET IRPF360LC 4K360 F5 INS COVER PCB FUSEHOLDER F022 Q17 TRANS LF SS N SM BC849B 4A849B HS1 HEATSINK CLIP TO220 13/8.6 DC/W F006 Q18 TRANS LF SS N SM BC849B 4A849B HS1 HEATSINK TO220 13 DEGC/W F005 Q19 TRANS LF SS N SM BC849B 4A849B HS3 HEATSINK TO220 CLIP 23DEG/W F004 Q20 TRANS LF SS N SM BC849B 4A849B HS5 CARBON THERMAL PAD E816MC Q21 TRANS LF SS N SM BC849B 4A849B HS5 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK Q22 TRANS LF SS N SM BC849B 4A849B HS5 HEATSINK CLIP TO220 13/8.6 DC/W F006 Q23 TRANS LF SS N SM BC849B 4A849B HS7 HEATSINK TO220 CLIP 23DEG/W F004 Q24 TRANS LF SS N SM BC849B 4A849B HS9 HEATSINK CLIP TO220 13/8.6 DC/W F006 Q25 TRANS LF SS N SM BC849B 4A849B HS9 CARBON THERMAL PAD E816MC Q26 TRANS LF SS N SM BC849B 4A849B HS9 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK Q27 TRANS LF SS N SM BC849B 4A849B HS10 HEATSINK TO220 CLIP 23DEG/W F004 Q28 TRANS LF SS N SM BC849B 4A849B HS11 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK Q29 TRANS LF SS N SM BC849B 4A849B HS11 HEATSINK CLIP TO220 13/8.6 DC/W F006 Q30 TRANS LF SS N SM BC849B 4A849B HS11 CARBON THERMAL PAD E816MC Q31 TRANS LF SS N SM BC849B 4A849B HS12 CARBON THERMAL PAD E816MC Q32 TRANS LF SS N 2SC2547 4A2546 HS12 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK Q33 TRANS LF SS P 2SA1085 4A1085 HS12 HEATSINK CLIP TO220 13/8.6 DC/W F006 Q34 TRANS LF SS N SM BC849B 4A849B HS13 HEATSINK TO220 CLIP 23DEG/W F004 Q35 TRANS LF SS N 2SC2547 4A2546 HS14 HEATSINK TO220 CLIP 23DEG/W F004 Q36 TRANS LF SS P 2SA1085 4A1085 L1 INDUCT 2U2 15x25mm AD2018 7D002A Q37 TRANS LF SS N SM BC849B 4A849B L2 INDUCT 2U2 15x25mm AD2018 7D002A Q38 TRANS LF SS P 2SA1085 4A1085 L3 27mH INDUCTOR 7D327 Q39 TRANS LF SS N SM BC849B 4A849B LED1P LED RED/GREEN 5MM 3D002 Q40 TRANS LF SS N 2SC2547 4A2546 LK9P JUMPER 4-WAY LEAD L836CA Q41 TRANS LF SS N 2SC2547 4A2546 O1 OPTO ISOLATOR 4N35 5T4N35 Q42 TRANS LF SS N SM BC847B 4A847 PCB PRINTED CIRCUIT BOARD L829PB Q43 TRANS LF SS N 2SC2547 4A2546 Q1 TRANS AUDIO DRIVER N 2SC5248 4B5248 Q44 TRANS LF SS N 2SC2547 4A2546 Q2 TRANS AUDIO DRIVER N 2SC5248 4B5248 Q45 TRANS LF SS N 2SC2547 4A2546 Q3 TRANS AUDIO DRIVER N 2SC5248 4B5248 Q46 TRANS LF SS N 2SC2547 4A2546 Q4 TRANS AUDIO DRIVER P 2SA1964 4B1964 Q47 TRANS LF SS N 2SC2547 4A2546 Q5 TRANS AUDIO DRIVER P 2SA1964 4B1964 Q48 TRANS LF SS P SM BC856B 4A856B Q6 TRANS AUDIO DRIVER P 2SA1964 4B1964 Q49 TRANS LF SS P SM BC856B 4A856B Q7 TRANS LF SS P SM BC856B 4A856B Q50 TRANS LF SS P SM BC856B 4A856B Q8 TRANS LF SS N SM BC846B 4A846B Q51 TRANS LF SS P SM BC856B 4A856B Q9 TRANS LF SS N SM BC846B 4A846B Q52 TRANS LF SS P SM BC859B 4A859B 6 ALPHA 10/10P SERVICE MANUAL Q53 TRANS LF SS P SM BC859B 4A859B R34 RESISTOR SM W4 11K 2% 1A311 Q54 TRANS LF SS P SM BC859B 4A859B R35P RESISTOR SM W4 0R0 2% 1A000 Q55 TRANS LF SS P SM BC859B 4A859B R35 RESISTOR SM W4 1K0 2% 1A210 Q56 TRANS LF SS P SM BC859B 4A859B R36 RESISTOR SM W4 47K 2% 1A347 Q57 TRANS LF SS P SM BC859B 4A859B R37 RESISTOR SM W4 22K 2% 1A322 Q58 TRANS LF SS P SM BC859B 4A859B R38 RESISTOR SM W4 47K 2% 1A347 Q59 TRANS LF SS N SM BC849B 4A849B R39 RESISTOR SM W4 47K 2% 1A347 Q60 TRANS LF SS P SM BC859B 4A859B R40 RESISTOR SM W4 22K 2% 1A322 Q61 TRANS LF SS N SM BC849B 4A849B R41 RESISTOR SM W4 47K 2% 1A347 Q62 TRANS LF SS N SM BC849B 4A849B R42 RESISTOR SM W4 47K 2% 1A347 R1 RES MF FU W3 1R0 5% NFR25 1G810 R43 RESISTOR SM W4 47K 2% 1A347 R2 RES MF FU W3 1R0 5% NFR25 1G810 R44 RESISTOR SM W4 47K 2% 1A347 R3 RES MF FU W3 1R0 5% NFR25 1G810 R45 RESISTOR SM W4 47K 2% 1A347 R4 RES CF 1W 330R 5% 1E133 R46 RESISTOR SM W4 47K 2% 1A347 R5 RES CF 1W 330R 5% 1E133 R47 RESISTOR SM W4 68K 2% 1A368 R6 RES CF W2 100R 5% 1D110 R48 RESISTOR SM W4 180R 2% 1A118 R7 RES MF FU W3 470R 5% NFR25 1G147 R49 RES CF W2 100R 5% 1D110 R8 RES MF FU W3 470R 5% NFR25 1G147 R50 RES MF FU W3 100R 5% NFR25 1G110 R9 RES MF FU W3 220R 5% NFR25 1G122 R51 RES MF FU W3 10R 5% NFR25 1G010 R10 RES MF FU W3 220R 5% NFR25 1G122 R52 RES MF FU W3 10R 5% NFR25 1G010 R11 RES MF FU W3 1K0 5% NFR25 1G210 R53 RES CF 2W 220R 5% 1C122 R12 RES MF FU W3 470R 5% NFR25 1G147 R54 RES MF FU W3 100R 5% NFR25 1G110 R13 RES MF FU W3 470R 5% NFR25 1G147 R55 RES MF FU W3 10R 5% NFR25 1G010 R14 RES MF FU W3 220R 5% NFR25 1G122 R56 RES MF FU W3 10R 5% NFR25 1G010 R15 RES MF FU W3 220R 5% NFR25 1G122 R57 RES CF 2W 220R 5% 1C122 R16 RES MF FU W3 1K0 5% NFR25 1G210 R58 RESISTOR SM W4 47R 2% 1A047 R17 RES MF FU W3 470R 5% NFR25 1G147 R59 RESISTOR SM W4 1M0 2% 1A510 R18 RES MF FU W3 470R 5% NFR25 1G147 R60 RESISTOR SM W4 1M0 2% 1A510 R19 RES MF FU W3 1K0 5% NFR25 1G210 R61 RESISTOR SM W4 2M2 2% 1A522 R20 RES MF FU W3 1K0 5% NFR25 1G210 R62 RESISTOR SM W4 1M0 2% 1A510 R21 RES MF FU W3 1K0 5% NFR25 1G210 R63 RESISTOR SM W4 1M0 2% 1A510 R22 RESISTOR SM W8 220R 1% 1A122A R64 RESISTOR SM W4 2M2 2% 1A522 R23 RESISTOR SM W8 220R 1% 1A122A R65 RESISTOR SM W4 220R 2% 1A122 R24 RESISTOR SM W8 2K4 1% 1A224A R65P RESISTOR SM W4 0R0 2% 1A000 R25 RESISTOR SM W8 2K4 1% 1A224A R66 RESISTOR SM W4 47R 2% 1A047 R26 RESISTOR SM W4 22K 2% 1A322 R67 RESISTOR SM W4 47R 2% 1A047 R27 RESISTOR SM W4 22K 2% 1A322 R68 RESISTOR SM W4 10K 2% 1A310 R28 RESISTOR SM W4 10K 2% 1A310 R69 RESISTOR SM W4 10K 2% 1A310 R29 RESISTOR SM W4 1K5 2% 1A215 R70 RESISTOR SM W4 10K 2% 1A310 R30 RESISTOR SM W4 120K 2% 1A412 R71 RESISTOR SM W4 4K7 2% 1A247 R31 RESISTOR SM W4 120K 2% 1A412 R72 RESISTOR SM W4 100R 2% 1A110 R32 RESISTOR SM W4 100K 2% 1A410 R73 RESISTOR SM W4 100R 2% 1A110 R33 RESISTOR SM W4 12K 2% 1A312 R74 RESISTOR SM W4 100R 2% 1A110 7 ALPHA 10/10P SERVICE MANUAL R75 RESISTOR SM W4 1K0 2% 1A210 R116 RESISTOR SM W4 10K 2% 1A310 R76 RESISTOR SM W4 100R 2% 1A110 R117 RESISTOR SM W4 1K5 2% 1A215 R77 RESISTOR SM W4 100R 2% 1A110 R118 RESISTOR SM W4 33K 2% 1A333 R78 RESISTOR SM W4 100R 2% 1A110 R119 RESISTOR SM W4 33K 2% 1A333 R79 RESISTOR SM W4 1K0 2% 1A210 R120 RESISTOR SM W4 33K 2% 1A333 R80P RESISTOR SM W4 0R0 2% 1A000 R121 RESISTOR SM W4 33K 2% 1A333 R80 RESISTOR SM W4 10K 2% 1A310 R122 RESISTOR SM W4 33K 2% 1A333 R81 RESISTOR SM W4 180R 2% 1A118 R123 RESISTOR SM W4 33K 2% 1A333 R82 RESISTOR SM W4 180R 2% 1A118 R124 RESISTOR SM W4 33K 2% 1A333 R83P RESISTOR SM W4 0R0 2% 1A000 R125 RESISTOR SM W4 33K 2% 1A333 R83 RESISTOR SM W4 100R 2% 1A110 R126 RESISTOR SM W4 33K 2% 1A333 R84 RES MO 3W 5% 0R22 KOASPR3 1Q922 R127 RESISTOR SM W4 33K 2% 1A333 R85 RES MO 3W 5% 0R22 KOASPR3 1Q922 R128 RESISTOR SM W4 22K 2% 1A322 R86 RES MO 3W 5% 0R22 KOASPR3 1Q922 R129 RESISTOR SM W4 220R 2% 1A122 R87 RES MO 3W 5% 0R22 KOASPR3 1Q922 R130 RESISTOR SM W4 220R 2% 1A122 R88 RES MO 3W 5% 0R22 KOASPR3 1Q922 R131 RESISTOR SM W4 220R 2% 1A122 R89 RES MO 3W 5% 0R22 KOASPR3 1Q922 R132 RESISTOR SM W4 220R 2% 1A122 R90 RES MO 3W 5% 0R22 KOASPR3 1Q922 R133 RESISTOR SM W4 220R 2% 1A122 R91 RES MO 3W 5% 0R22 KOASPR3 1Q922 R134 RESISTOR SM W4 220R 2% 1A122 R92 RESISTOR SM W4 47R 2% 1A047 R135 RESISTOR SM W4 220R 2% 1A122 R93 RESISTOR SM W4 47R 2% 1A047 R136 RESISTOR SM W4 220R 2% 1A122 R94 RESISTOR SM W4 150R 2% 1A115 R137 RESISTOR SM W4 100K 2% 1A410 R95 RESISTOR SM W4 47R 2% 1A047 R138 RES MF FU W3 220R 5% NFR25 1G122 R96 RESISTOR SM W4 47R 2% 1A047 R139 RES MF FU W3 100R 5% NFR25 1G110 R97 RESISTOR SM W4 150R 2% 1A115 R140 RES MF FU W3 100R 5% NFR25 1G110 R98 RESISTOR SM W4 27K 2% 1A327 R141 RES MF FU W3 220R 5% NFR25 1G122 R99 RESISTOR SM W4 470R 2% 1A147 R142 RESISTOR SM W4 4K7 2% 1A247 R100 RESISTOR SM W4 4K7 2% 1A247 R143 RES MF FU W3 220R 5% NFR25 1G122 R101 RESISTOR SM W4 470R 2% 1A147 R144 RES MF FU W3 100R 5% NFR25 1G110 R102 RESISTOR SM W4 68K 2% 1A368 R145 RES MF FU W3 100R 5% NFR25 1G110 R103 RESISTOR SM W4 68K 2% 1A368 R146 RES MF FU W3 220R 5% NFR25 1G122 R104 RESISTOR SM W4 120K 2% 1A412 R147 RESISTOR SM W4 470R 2% 1A147 R105 RESISTOR SM W4 68K 2% 1A368 R148 RES MF FU W3 1K0 5% NFR25 1G210 R106 RESISTOR SM W4 68K 2% 1A368 R149 RES MF FU W3 1K0 5% NFR25 1G210 R107 RESISTOR SM W4 120K 2% 1A412 R150 RES MF FU W3 470R 5% NFR25 1G147 R108 RESISTOR SM W4 1K2 2% 1A212 R151 RES MF FU W3 1K0 5% NFR25 1G210 R109 RESISTOR SM W4 1K2 2% 1A212 R152 RES MF FU W3 1K0 5% NFR25 1G210 R110 RES CF 1W 1R5 5% 1E815 R153 RES MF FU W3 470R 5% NFR25 1G147 R111 RES CF 1W 1R5 5% 1E815 R154 RESISTOR SM W4 2K2 2% 1A222 R112 RES CF 1W 5R6 5% 1E856 R155 RESISTOR SM W4 2K2 2% 1A222 R113 RES CF 1W 5R6 5% 1E856 R156 RESISTOR SM W4 2K2 2% 1A222 R114 RESISTOR SM W4 47R 2% 1A047 R157 RESISTOR SM W4 2K2 2% 1A222 R115 RESISTOR SM W4 1K5 2% 1A215 R158 RESISTOR SM W4 1K5 2% 1A215 8 ALPHA 10/10P SERVICE MANUAL R159 RESISTOR SM W4 1K5 2% 1A215 R202 RESISTOR SM W4 100K 2% 1A410 R160 RESISTOR SM W4 100R 2% 1A110 R203 RESISTOR SM W4 2K4 2% 1A224 R161 RESISTOR SM W4 100R 2% 1A110 R204 RESISTOR SM W4 10K 2% 1A310 R162 RESISTOR SM W4 100R 2% 1A110 R205 RES CF 1W 5% 6K8 1E268 R163 RESISTOR SM W4 100R 2% 1A110 R206 RESISTOR SM W4 100K 2% 1A410 R164 RESISTOR SM W8 560R 1% 1A156A R207 RESISTOR SM W4 100K 2% 1A410 R165 RESISTOR SM W8 560R 1% 1A156A R208 RESISTOR SM W4 470R 2% 1A147 R166 RESISTOR SM W4 2K2 2% 1A222 R209 RESISTOR SM W4 4K7 2% 1A247 R167 RESISTOR SM W4 2K2 2% 1A222 R210 RESISTOR SM W4 1K5 2% 1A215 R168 RESISTOR SM W4 220R 2% 1A122 R211 RESISTOR SM W4 4K7 2% 1A247 R169 RESISTOR SM W4 220R 2% 1A122 R212 RESISTOR SM W4 1K5 2% 1A215 R170 RES MF W4 22K 1% 1H322 R213 RESISTOR SM W4 47R 2% 1A047 R171 RES MF W4 22K 1% 1H322 R214 RESISTOR SM W4 4K7 2% 1A247 R172 RESISTOR SM W4 10R 2% 1A010 R215 RESISTOR SM W4 4K7 2% 1A247 R173 RESISTOR SM W4 470R 2% 1A147 R216 RESISTOR SM W4 1K0 2% 1A210 R174 RESISTOR SM W4 10R 2% 1A010 R217 RESISTOR SM W4 10K 2% 1A310 R175 RESISTOR SM W4 4K7 2% 1A247 R218P RESISTOR SM W4 220R 2% 1A122 R176 RESISTOR SM W4 470K 2% 1A447 R218 RESISTOR SM W4 120K 2% 1A412 R177 RESISTOR SM W4 470K 2% 1A447 R219 RESISTOR SM W4 10K 2% 1A310 R178 RESISTOR SM W4 470K 2% 1A447 R220 RESISTOR SM W4 100K 2% 1A410 R179 RESISTOR SM W4 470K 2% 1A447 R221 RES CF 1W 470R 5% 1E147 R180 RESISTOR SM W8 47K 1% 1A347A R222 RESISTOR SM W4 100K 2% 1A410 R181 RESISTOR SM W8 47K 1% 1A347A R223 RESISTOR SM W4 10K 2% 1A310 R182 RESISTOR SM W8 2K7 1% 1A227A R224 RES MF FU W3 10R 5% NFR25 1G010 R183 RESISTOR SM W8 2K7 1% 1A227A R225 RESISTOR SM W4 10K 2% 1A310 R184 RESISTOR SM W4 100K 2% 1A410 R226 RESISTOR SM W4 10K 2% 1A310 R185 RESISTOR SM W4 100K 2% 1A410 R227 RES MF W4 10R 1% 1H010 R186 RESISTOR SM W4 120K 2% 1A412 R228 RES CF 1W 2K7 5% 1E227 R187 RESISTOR SM W8 8K2 1% 1A282A R229 RES CF 1W 2K7 5% 1E227 R188 RESISTOR SM W8 8K2 1% 1A282A R230 RESISTOR SM W4 47K 2% 1A347 R189 RESISTOR SM W4 27K 2% 1A327 R231 RESISTOR SM W4 47K 2% 1A347 R190 RESISTOR SM W4 1M0 2% 1A510 R232 RESISTOR SM W4 1K0 2% 1A210 R191 RESISTOR SM W4 27K 2% 1A327 R233 RESISTOR SM W4 3K3 2% 1A233 R192 RESISTOR SM W4 470K 2% 1A447 R234 RESISTOR SM W4 3K3 2% 1A233 R193 RESISTOR SM W4 22R 2% 1A022 R235 RESISTOR SM W4 100K 2% 1A410 R194 RESISTOR SM W4 22R 2% 1A022 R236 RESISTOR SM W4 10K 2% 1A310 R195 RESISTOR SM W4 22R 2% 1A022 R237 RESISTOR SM W4 1K5 2% 1A215 R196 RESISTOR SM W4 22R 2% 1A022 R238 RESISTOR SM W4 1K8 2% 1A218 R197 RESISTOR SM W4 100K 2% 1A410 R239 RESISTOR SM W4 1K8 2% 1A218 R198 RESISTOR SM W4 4K7 2% 1A247 RLY1 RLY SPST 24V SPKR A213 R199 RES MF FU W3 1R0 5% NFR25 1G810 RLY2 RLY SPST 24V SPKR A213 R200 RES CF 1W 2K7 5% 1E227 RLY3 RLY SPST 24V SPKR A213 R201 RESISTOR SM W4 22K 2% 1A322 RLY4 RLY SPST 24V SPKR A213 9 ALPHA 10/10P SERVICE MANUAL RLY6 RELAY MAINS 24V 10A A212 TX1 ALPHA10 AMP POWER TX 230V L831TX RLY7 RELAY MAINS DPDT 12V 5A A211 TX2 ALPHA 10 AMP 230V/115V TRANSFORMER L825TX SH1 MAINS EMC SHIELD E5402 X1 CER RESON 4.00MHz 7W005 SH2 PHONO EMC SHIELD E808MC Y1 TX WIRE RESTRAINT F185 SK1 PHONO SKT 4-WAY EMC GOLD 8D225 Y2 TX WIRE RESTRAINT F185 SK2 CAMCON BINDING POST 4WAY GOLD 8D417G Z1 IC VREG POS LM317T 5D317T SK3 CAMCON BINDING POST 4WAY GOLD 8D417G Z2 IC VREG POS LM337T 5D337 SK4 IEC MAINS CONN PCB INS PX 8A001 Z3 IC AUDIO SM DUAL TL072 5B072D SK5 STEREO JACK PCB 8D301 Z4 IC AUDIO SM DUAL TL072 5B072D SK6 22-WAY FFC CONN 8K8022 Z5 IC COMPARITOR TA7317P 5M7317 SK7 CAGE CLAMP 16A 3 WAY 8Q001 Z6 IC VREG POS 7805 5D7805 SK8 CAGE CLAMP 16A 4 WAY 8Q002 Z7 IC VREG POS 7808 5D7808 SK9 CAGE CLAMP 16A 1 WAY ARC003-236 8Q003 Z8 IC COMPARITOR SM DUAL LM393A 5M393AD SK10 MIN JACK DUAL 3.5mm HSJ1002-01-1020 8D302 Z9 IC SOCKET 28 NARROW 8S028N SKT1 JST 6 WAY HEADER 8K709 Z9 IC CMOS MICRO HT48R30 28-DIP-B-0 5B483028 SW2 SW PUSH 2PCO A1008 Z10 IC THERMOSTAT SM LM56CIM 5M56 SW3 SW PUSH 2PCO A1008 Z11 IC THERMOSTAT SM LM56CIM 5M56 SW4 SW PUSH 2PCO A1008 Z12 IC CMOS EPROM 24C02 SM 5G2402 SW5 SW PUSH 2PCO A1008 Z13 IC COMPARITOR SM DUAL LM393A 5M393AD TH2 THERMISTOR MAINS SURGE 1T004 TH3 THERMISTOR MAINS SURGE 1T004 ALPHA 10 PREAMPLIFIER BOARD PARTS LIST Ref No. Description Part No. C24 MLC 47P 100V NPO 5% SM 2C047 C1 ELST NON POLAR 10UF 35V 2U610 C25 MLC 47P 100V NPO 5% SM 2C047 C2 ELST 22U 63V 2N622 C26 MLC 47P 100V NPO 5% SM 2C047 C3 ELST NON POLAR 10UF 35V 2U610 C31 ELST 22U 63V 2N622 C4 ELST 22U 63V 2N622 C32 ELST 22U 63V 2N622 C8 MLC 1N0 50V X7R 10% SM 2C210 C33 MLC 1N0 50V X7R 10% SM 2C210 C9 MLC 1N0 50V X7R 10% SM 2C210 C34 MLC 1N0 50V X7R 10% SM 2C210 C10 PPRO 680P 5% 63V RA 2D168 C35 MLC 1N0 50V X7R 10% SM 2C210 C11 PPRO 680P 5% 63V RA 2D168 C36 MLC 1N0 50V X7R 10% SM 2C210 C13 MLC 47P 100V NPO 5% SM 2C047 C37 MLC 1N0 50V X7R 10% SM 2C210 C14 MLC 47P 100V NPO 5% SM 2C047 C38 MLC 1N0 50V X7R 10% SM 2C210 C15 MLC 47P 100V NPO 5% SM 2C047 D1 ZENER 6V8 400MW 3C06804 C16 MLC 47P 100V NPO 5% SM 2C047 D2 ZENER 6V8 400MW 3C06804 C17 MLC 47P 100V NPO 5% SM 2C047 LK1 JUMPER 8-WAY LEAD FOR A10 PRE-AMP L823CA C18 MLC 47P 100V NPO 5% SM 2C047 LK2 JUMPER 8-WAY LEAD FOR A10 PRE-AMP L832CA C19 MLC 47P 100V NPO 5% SM 2C047 PCB PRINTED CIRCUIT BOARD L832PB C20 MLC 47P 100V NPO 5% SM 2C047 PL6 16 WAY DIL PIN HEADER 8K6316 C21 MLC 47P 100V NPO 5% SM 2C047 R1 RESISTOR SM W4 1K0 2% 1A210 C22 MLC 47P 100V NPO 5% SM 2C047 R2 RESISTOR SM W4 1K0 2% 1A210 C23 MLC 47P 100V NPO 5% SM 2C047 R3 RESISTOR SM W4 56R 2% 1A056 10 ALPHA 10/10P SERVICE MANUAL R4 RESISTOR SM W4 56R 2% 1A056 R58 RESISTOR SM W4 47R 2% 1A047 R5 RESISTOR SM W4 1K8 2% 1A218 R59 RESISTOR SM W4 47R 2% 1A047 R6 RESISTOR SM W4 100K 2% 1A410 R60 RESISTOR SM W4 47R 2% 1A047 R7 RESISTOR SM W4 100K 2% 1A410 R61 RESISTOR SM W4 47R 2% 1A047 R14 RESISTOR SM W4 10K 2% 1A310 R62 RESISTOR SM W4 47R 2% 1A047 R17 RESISTOR SM W4 1K0 2% 1A210 R63 RESISTOR SM W4 47R 2% 1A047 R18 RESISTOR SM W4 1K0 2% 1A210 R64 RESISTOR SM W8 1K5 1% 1A215A R19 RESISTOR SM W4 1K0 2% 1A210 R65 RESISTOR SM W8 1K5 1% 1A215A R20 RESISTOR SM W4 1K0 2% 1A210 R66 RESISTOR SM W8 6K8 1% 1A268A R21 RESISTOR SM W4 1K0 2% 1A210 R67 RESISTOR SM W8 6K8 1% 1A268A R22 RESISTOR SM W4 1K0 2% 1A210 R68 RESISTOR SM W4 100K 2% 1A410 R23 RESISTOR SM W4 1K0 2% 1A210 R69 RESISTOR SM W4 100K 2% 1A410 R24 RESISTOR SM W4 1K0 2% 1A210 R70 RESISTOR SM W4 100K 2% 1A410 R25 RESISTOR SM W4 1K0 2% 1A210 R71 RESISTOR SM W4 100K 2% 1A410 R26 RESISTOR SM W4 1K0 2% 1A210 R72 RESISTOR SM W4 100K 2% 1A410 R27 RESISTOR SM W4 1K0 2% 1A210 R73 RESISTOR SM W4 100K 2% 1A410 R28 RESISTOR SM W4 1K0 2% 1A210 R74 RESISTOR SM W4 100K 2% 1A410 R29 RESISTOR SM W4 1K0 2% 1A210 R75 RESISTOR SM W4 100K 2% 1A410 R30 RESISTOR SM W4 1K0 2% 1A210 R76 RESISTOR SM W4 100K 2% 1A410 R31 RESISTOR SM W4 1K0 2% 1A210 R77 RESISTOR SM W4 100R 2% 1A110 R32 RESISTOR SM W4 1K0 2% 1A210 R80 RESISTOR SM W4 22K 2% 1A322 R33 RESISTOR SM W4 1K0 2% 1A210 R81 RESISTOR SM W4 22K 2% 1A322 R34 RESISTOR SM W4 1K0 2% 1A210 SK1 PHONO SKT 4-WAY EMC GOLD 8D225 R38 RESISTOR SM W4 100K 2% 1A410 SK2 PHONO SKT 4-WAY EMC GOLD 8D225 R39 RESISTOR SM W4 100K 2% 1A410 SK3 PHONO SKT 4-WAY EMC GOLD 8D225 R40 RESISTOR SM W4 100K 2% 1A410 SK4 PHONO SKT 4-WAY EMC GOLD 8D225 R41 RESISTOR SM W4 100K 2% 1A410 SK5 PHONO SKT 2-WAY EMC GOLD 8D226 R44 RESISTOR SM W4 22K 2% 1A322 SK7 22-WAY FFC CONN 8K8022 R45 RESISTOR SM W4 22K 2% 1A322 SK8 32-WAY FFC CONN VERT 8K8032 R46 RESISTOR SM W4 22K 2% 1A322 Z3 IC OPAMP DUAL SM OPA2134PA 5B2134 R47 RESISTOR SM W4 22K 2% 1A322 Z4 IC OPAMP DUAL SM OPA2134PA 5B2134 R48 RESISTOR SM W4 22K 2% 1A322 Z6 IC HCMOS SM MAX 4051 5K4051M R49 RESISTOR SM W4 22K 2% 1A322 Z7 IC HCMOS SM MAX 4051 5K4051M R50 RESISTOR SM W4 22K 2% 1A322 Z8 IC HCMOS SM MAX 4051 5K4051M R51 RESISTOR SM W4 22K 2% 1A322 Z9 IC HCMOS SM MAX 4051 5K4051M R52 RESISTOR SM W4 22K 2% 1A322 Z10 IC HCMOS SM MAX 4051 5K4051M R53 RESISTOR SM W4 22K 2% 1A322 Z11 IC HCMOS SM MAX 4051 5K4051M R54 RESISTOR SM W4 22K 2% 1A322 Z12 IC AUDIO SM DUAL TL072 5B072D R55 RESISTOR SM W4 22K 2% 1A322 Z13 IC AUDIO SM DUAL TL072 5B072D R56 RESISTOR SM W4 22K 2% 1A322 Z14 IC AUDIO DUAL VOLPOT LM1972 5C1972 R57 RESISTOR SM W4 22K 2% 1A322 ALPHA 10 DISPLAY BOARD PARTS LIST 11 ALPHA 10/10P SERVICE MANUAL Ref No. Description Part No. R6 RES MF W4 150R 1% 1H115 C1 CERD 100N 63V 20% RA 2A410 R7 RES MF W4 150R 1% 1H115 C2 ELST 470U 25V RA 2N747 R8 RES MF W4 150R 1% 1H115 C3 CERD 100N 63V 20% RA 2A410 R9 RES MF W4 4K7 1% 1H247 C4 CERD 100N 63V 20% RA 2A410 R10 RES MF W4 4K7 1% 1H247 C5 CERD 100N 63V 20% RA 2A410 R11 RES MF W4 10K 1% 1H310 C6 ELST 220U 16V 2N722 R12 RES MF W4 10K 1% 1H310 C8 CERD 100N 63V 20% RA 2A410 R13 RES MF W4 150R 1% 1H115 D1 SSDIODE 1N4148 75V 3A4148 R14 RES MF W4 330R 1% 1H133 D2 SSDIODE 1N4148 75V 3A4148 R15 RES MF W4 4K7 1% 1H247 D3 SSDIODE 1N4148 75V 3A4148 R16 RES MF W4 4K7 1% 1H247 D4 SSDIODE 1N4148 75V 3A4148 R17 RES MF W4 10K 1% 1H310 D5 SSDIODE 1N4148 75V 3A4148 R18 RES MF W4 100R 1% 1H110 D6 SSDIODE 1N4148 75V 3A4148 R19 RES MF W4 100R 1% 1H110 D7 SSDIODE 1N4148 75V 3A4148 R20 RES MF W4 100K 1% 1H410 D8 SSDIODE 1N4148 75V 3A4148 R21 RES MF W4 100R 1% 1H110 D9 SSDIODE 1N4148 75V 3A4148 R22 RES MF W4 100K 1% 1H410 D10 SSDIODE 1N4148 75V 3A4148 RP1 RES NETWORK 100Kx8 COMMON 1V410 D11 SSDIODE 1N4148 75V 3A4148 RX1 REMOTE CONTROL RECEIVER SBX1610-62 38KHZ B2103 L831PB PRINTED CIRCUIT BOARD L831PB SK1 22-WAY FFC CONN HORIZ 8K8122 LED1 LED GREEN 5MM 3D001 SK2 22-WAY FFC CONN HORIZ 8K8122 LED2 LED GREEN 5MM 3D001 SK3 EC16B2414 A1211 LED3 LED GREEN 5MM 3D001 SW1 TACT SWITCH 2-PIN LOW PROF A1504 LED4 LED GREEN 5MM 3D001 SW2 TACT SWITCH 2-PIN LOW PROF A1504 LED5 LED GREEN 5MM 3D001 SW3 TACT SWITCH 2-PIN LOW PROF A1504 LED6 LED GREEN 5MM 3D001 SW4 TACT SWITCH 2-PIN LOW PROF A1504 LED7 LED GREEN 5MM 3D001 SW5 TACT SWITCH 2-PIN LOW PROF A1504 LED100 LED RED/GREEN 5MM 3D002 SW6 TACT SWITCH 2-PIN LOW PROF A1504 LK1 LINK PLAIN 10mm 1X010A SW7 TACT SWITCH 2-PIN LOW PROF A1504 LK3 JUMPER 3 WAY x 125mm L815CA SW8 TACT SWITCH 2-PIN LOW PROF A1504 M1 NORITAKE ITRON CU20025RCPB-U1J B1010 SW9 TACT SWITCH 2-PIN LOW PROF A1504 Q1 TRANS LF SS P BC557B 4A557 SW10 TACT SWITCH 2-PIN LOW PROF A1504 Q2 TRANS MOSFET SW ZVNL120A 4K120 SW11 TACT SWITCH 2-PIN LOW PROF A1504 R1 RES MF FU W3 3R3R 5% NFR25 1G833 X1 CER RESON 4.00MHz 7W005 R2 RES MF W4 150R 1% 1H115 Z1 IC VREG POS 7805 5D7805 R3 RES MF W4 150R 1% 1H115 Z2 40 PIN IC SOCKET 8S040 R4 RES MF W4 150R 1% 1H115 Z2 IC CMOS MICRO PIC16C65 5H16C65 R5 RES MF W4 150R 1% 1H115 12 FR4_2OZ 470R FU R7 1R0 FU 100R W2 CF 1N4003F 10V 400MW D3 D14 6A40 6A40 R228 2K7 1W CF R229 10U EL 6A40 D13 6A40 D12 100U EL 100V ATE_PAD C2 + 470R FU R8 1R0 FU R2 15V 400MW ! D15 D4 HS8N TO220HS23TR D2 ! + C19 10M EL 63V 10V 400MW -15V Regulator ! +UREG ATE_PAD +15V Q39 BC849B B C38 680P PP 4 4 -15V +5V Control Supply MOLEX2MV MOLEX2MV +8V O Vout C10 GND C31 LOut Vin 100N SM I C94 PMPU1 Z6 7805 ATE_PAD + G C89 100N SM 100N SM 100N SM C88 C87 47K SM R230 Q_30 10U EL C39 680P PP SKT2 SKT3 2 1 1 2 Digital Supply FIX2 Z3C Z4C TL072 SM TL072 SM FANOUT ATE_PAD BAS16W SM ACD2 ATE_PAD PDIG1 ATE_PAD + BAS16W SM 47K SM D47 Q_47 R231 11 1N4003F O Vout D46 11V 230V +8V 100N SM C45 D19 + 1N4003F C86 12 Vin Z7 7808 HS ATE_PAD GND I 0V Q59F 2SC5248 D45 10U EL Q_56 -SUP 8 R232 Fan 8 5V6 400MW D50 10K SM 10U EL R217 C90 +UREG UREG1 1N4003F -15V 1K0 SM G 1N4003F CAGECLAMP4 10U EL C7 C9 2K7 1W CF D11 D10 C1 ATE_PAD PAN1 100U EL 100V 220R SM1% R23 2K4 SM1% R25 22U EL ADJ NAN1 A 22U EL C8 4N7 PP C33 220R SM1% R24 2K4 SM1% R22 HS ADJ 22U EL C32 4N7 PP C6 22U EL A PPRE1 ATE_PAD C20 C21 180R SM ACDet C TO220HS23REG R35 24V 3W SM HS2NA TO220HS08REG 100N SM 4N7 MAINS TX230 ATE_PAD AC2 ATE_PAD ROut DDH AS2A5 DDD Drilling Detail DRILL_DWG DD_A2H DDV DD1 Drilling Detail Issue Box A2 Vertical Paper Marker DD_A2V DD_ISSUE BARCD BARCODE LABEL BARCODE 1 115V RLY7A C44 1 2 3 4 10N SM A2 Horizontal Paper Marker Kit Masks: 1) For Integrated Amp use... N, F inclusive 2) For Power Amp use... P,S,F inclusive 11V 2 C13 PCB MATERIAL FR4, 2 OZ Cu 5 PTHMAINS AS4A_115V O Vout PGND1 ATE_PAD Q_55 D44 C85 CAGECLAMP3 F5 Y1 TX WIRE CLIP F4 DDM + ACD1 ATE_PAD D18 3M3 EL TX115 ATE_PAD SK7 1 Blue 2 Dark Grey 3 Orange PTHMAINS FIDUCIAL PD7 PD8 SJB TOOLINGTOOLING A RLY DPDT 12V TXN ATE_PAD + + SK8 Grey Light Green Light Green Grey AC1 ATE_PAD 1K0 SM 13 D240V ATE_PAD LIVE ATE_PAD TH3 S.J.B. SJB BAS16W SM 1K0 SM D NSUP1 Q_48 R216 C48 NEUTRAL ATE_PAD Z2 LM337T Vin Q12 BC847B Q42 BC847B 7 RLY SPDT 24V TH2 TX2 0V L825TX Y2 TX WIRE CLIP EMCMAINS FD_1 D49 GRN/YEL CAGECLAMP1 RLY6A PD5 TOOLING 0V Green D115V ATE_PAD C47 4N7 MAINS IEC3 FIDUCIAL 100K SM D42 + TXGND ATE_PAD BAS16W SM RLY7B RLY DPDT 12V E N 1 C46 4N7 MAINS 4N7 MAINS L SK9 SK4 FD_2 Reset Circuit R202 + HS3A I BLUE BLACK L N + 1K5 SM C96 115V HS1A TO220HS13REG + Q4 2SA1964 GREEN R29 FIX1 FIX4 FIX5 FIX6 FIX7 + Q_57 CONTROL l829ct2_6.SCH BROWN + -PRE FIX8 FIX9 EMC Shield B RESET + C18 10M EL 63V +15V O Vout R199 EMCPHONO Vin 1R0 FU BLUE 230V SH1 E ACDet Fault 4K7 SM ORANGE ACDet Fault R71 TX1 L831TX Chassis Connection FIX3 Fan FAN Powerup 10U EL 1 ACDet +SUP 2 +15V 3 4 5 6 -15V -SUP JST 6W HEADER Replace with same type component only LVProt RVProt L829PB D16 SKT1 R81 C41 3rd Ch. Power NPRE1 ATE_PAD PCB ATE_PAD ! Regulator 47N PE RLY DPDT 12V EMC Shield Bot- +UREG 180R SM SH2 CHASS BAS16W SM RLY7C -SUP PCB Top- C101 R82 180R SM 1R0 FU R3 I SK3C CAMCON_G Bot+ 470P SM ROut 2PCO_VERT ! R1 +15V Z1 LM317T 470P SM C43 10N SM Output R48 RLY 51SB12T HS6N TO220HS23TR SK3B CAMCON_G RLY5NB SCREEN C SK3A SPKA2 ATE_PAD SW1NB 2PCO_VERT 15V 400MW Q1 2SC5248 CHASS Bot- Top+ 4 5 RLY1A RLY SPST SPKR CAMCON_G SW1NC ! +PRE C30 VI Cut ABiasRef Input R83P 0R0 SM RLY 51SB12T Top- +SUP D1 RLY SPST SPKR VI Latch SK1B SPKB2 ATE_PAD RLY3A 68K SM PWRAMPR l829ct4_6.SCH 0R0 SM 6 ABSUP R47 10N SM C28 470P SM RLY5NA R27 22K SM N PRE2 ATE_PAD R65P SPKA1 ATE_PAD LOut R201 22K SM N PHONO4G L&R Inputs F PRE1 ATE_PAD F ! SK2C CAMCON_G Bot+ 8 PSUP1 330R 1W CF CAMCON_G SK2B Top+ C42 1 Output R80P 0R0 SM 0R0 SM 1 EMC ABiasRef Input CAMCON_G SK2A RLY2A RLY SPST SPKR R35P SK1A PHONO4G VI Cut C40 Pre_Outputs 2 3 22K SM VI Latch 7 LOut ATE_PAD PWRAMPL l829ct3_6.SCH R26 22K SM 6 7 R SPKB1 ATE_PAD R128 SW1NA 2PCO_VERT RLY4A RLY SPST SPKR R4 330R 1W CF HP2 R5 ROut 100R W2 CF R6 VIRESET1 470R SM -15V 10R MF ATE_PAD 6 HP1 2 3 1 LHC RHC R224 HPSKT R208 D SK5 SGND1 10U EL + C22 10U EL R36 Q7 BC856B C95 Q60 BC859B 4 5 L R49 VI Cut-out latch 47K SM +15V 1 2 3 4 5 6 7 8 WTRAP2.5X8V 5 Fault + SK11 4 10N SM Pre-Amp Audio Input 3 C29 2 10N SM 1 2 UPDTBX Update Box UPDATE_BOX PS Designators ending in... N - For integrated amp only, P - For power amp only, R - For power amp with remote only, S - For power amp with no remote only, X - Other end of wire link. 97_1085 SJB 22-9-97 Hardware Remote RX 2 97_1086 SJB 26-9-97 C6 & C8 change from 10u to 22u 3 97_1096 SJB 22-10-97 No Change 4 97_1102 SJB 11-11-97 HS2N change to larger size 5 23425 Circuit Diagram Notes: A & R Cambridge Ltd. Pembroke Avenue 98_1042 SJB 9-7-98 Denny Industrial Centre ECO No. INITIALS DATE Waterbeach Date Printed Filename Cambridge CB5 9PB 10-Jul-1998 J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\L829ct1_6.prj Photo Strip PHOTO_STRIP 3 DRAWING TITLE Alpha 10 Amp Main 4 5 6 PCB Issue 2 to 3 changes 6 DESCRIPTION OF CHANGE Drawn by: Sheet 1 of 5 SJB 7 DRAWING NO. ISSUE L829CT1 8 A 1 2 3 4 5 6 7 8 D21 +15V +SUP Q_10 220R SM QPAD 220R SM Q49 BC856B 47N PE D Bootstrap 10R SM 56P PS 12V 3W SM D39 0R22 3W MO 100U EL 100V HS7 TO220HS23TR R172 R84 ! + C4 C69X Q41 2SC2547 0R22 3W MO C68 C106 100P PPS SM 100P PPS SM 68K SM R9 C63 STABLE1 R115 R154 2K2 SM 470R FU R158 1K5 SM 47R SM R92 100N SM R108 1K2 SM 150R SM R94 1K0 FU R11 Q32 2SC2547 68K SM HS10 TO220HS23TR Q33 2SA1085 ! 100U EL HS9 R103 + C23 C51 C104 ! R50 ABSUP 100R FU 1K0 FU R148 10K SM B 33K SM Q40 2SC2547 R118 100R SM 3 LM393A SM BAS16W SM C57 100N PC 0R22 3W MO R86 0R22 3W MO R87 R93 C52 D5 220R SM 220R SM R129 R130 1K0 FU R149 1K0 SM 100P PP R75 C61 100R SM 10V 400MW ABiasRef 4N7 PP Q_41 QPAD Z8A 2 10R FU R74 C12 ! R51 + 1 IRFP360LC Q17 BC849B ! R68 R141 ! R67 R73 220R FU 220R FU Q8 BC846B 100R SM Q_8 QPAD 10P SM#A 2K2 SM C99 Q9 BC846B 47R SM Q_6 ! Q13 ! R10 220R FU R240 ! R138 Q2 2SC5248 Q20 BC849B R166 TO247HS2.8DEGC/W Q_5 QPAD QPAD 4K7 SM 220U EL ! + VI Cut 22K SM 120K SM Q_7 Voltage Servo ATE_PAD R37 VI Cut-out R104 O2 TLP181 SM Q21 BC849B B R39 +VI Protection 2K2 SM R155 4 470R SM 6 3 470R FU R99 Q_43 150P PP -VI Protection R177 Q_3 Output VI Latch 47R SM Z3A TL072 SM 470K SM C OUTPUT1 2U2H LAC R110 220U EL 3 33K SM R119 2 1 1 R176 470K SM QPAD ATE_PAD VSERVO1 10U NP L1 ATE_PAD Q23 BC849B C14 R60 1K8 SM C71 R12 Q_19 R170 QPAD 150P PP R168 2K4 SM R13 47N PE ! 10K SM Q22 BC849B 1R5 1W CF 22K MF R164 R194 Q_4 560R SM1% Q18 BC849B Q_59 R193 22R SM 1M0 SM Q_58 C75 47K SM R59 R38 330P PP C64 47K SM1% R180 Q19 BC849B 22R SM C C55 100N PC R112 5R6 2W CF#A D17 10U NP C72 Q5 2SA1964 R102 Q_60 47R SM C56 100N PC D6 10V 400MW R58 1N0 PP R53 R132 Q48 BC856B C37 220R 2W CF Q14 IRFP360LC R131 Q_50 ATE_PAD C76 100R FU 100R FU R139 R140 10R FU 220R FU R85 Q52 BC859B 470R FU R52 ! R150 QPAD 2K7 SM 100K SM 100R SM 100R SM BAS16W SM 8K2 SM1% R187 Q_13 R182 Input R137 Q_11 QPAD Q_12 QPAD Gain 29dB or 28.3x INPUT1 HS5 TO247HS2.8DEGC/W R72 3 Q53 BC859B D32 D R160 SW2A 2PCO 2 R161 1 100R SM 1N4003F Bias Level detector C102 1N0 SM -15V 7 6 QPAD 2M2 SM R30 C79 120K SM TL072 SM 10U NP 33K SM R61 BAS16W SM 5 A BSRef Q_29 D31 Z3B R120 R184 C67 10N SM 100K SM Q_49 ATE_PAD ISERVO1 -SUP IQ1 ATE_PAD ! 2 3 97_1085 SJB 22-9-97 Hardware Remote RX 2 97_1086 SJB 26-9-97 C64 change from 220P to 330P 3 97_1096 SJB 22-10-97 R50 change from 10R to 100R 4 97_1102 SJB 11-11-97 R61 & 168 changed. C99 added. 5 23425 Replace with same type component only Circuit Diagram Notes: A & R Cambridge Ltd. Pembroke Avenue 98_1042 SJB 9-7-98 Denny Industrial Centre ECO No. INITIALS DATE Waterbeach Date Printed Filename Cambridge CB5 9PB 10-Jul-1998 J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\l829ct3_6.SCH Auto-Bias Servo 1 DRAWING TITLE Alpha 10 Amp L Ch. 4 5 6 PCB Issue 2 to 3 changes 6 DESCRIPTION OF CHANGE Drawn by: Sheet 2 of 5 SJB 7 DRAWING NO. ISSUE L829CT3 8 A 1 2 3 4 5 6 7 8 D22 +15V +SUP 10R FU Q_23 220R SM QPAD 220R SM Q51 BC856B Bootstrap 10R SM 56P PS 12V 3W SM D41 0R22 3W MO 100U EL 100V HS13 TO220HS23TR R174 R88 ! + C5 C70X Q44 2SC2547 0R22 3W MO C107 C108 100P PPS SM 100P PPS SM 68K SM R14 C65 STABLE2 R117 2K2 SM R156 1K5 SM 470R FU R159 R17 Q_45 47R SM R95 100N SM R109 1K2 SM 150R SM R97 1K0 FU Q35 2SC2547 68K SM HS14 TO220HS23TR Q36 2SA1085 ! + 100U EL HS12 R106 R16 C53 C105 ! R54 ABSUP 100R FU Q_42 QPAD B 5 33K SM Q43 2SC2547 R121 LM393A SM BAS16W SM C60 Z8B 6 100N PC 0R22 3W MO R90 0R22 3W MO R91 -VI Protection 47R SM + 220U EL R96 C54 R151 ! 10K SM ! R55 100R SM Q24 BC849B 10V 400MW D7 220R SM 220R SM R133 R134 1K0 FU R152 1K0 SM 100P PP R79 C62 100R SM 4N7 PP ! 7 IRFP360LC ABiasRef Q_22 QPAD R69 R146 Q15 10R FU R78 C36 R114 47R SM R77 220R FU 220R FU Q10 BC846B 100R SM Q_21 QPAD 10P SM#A 2K2 SM C100 Q11 BC846B ! ! R15 220R FU R241 ! R143 Q3 2SC5248 Q_44 R167 + VI Cut 22K SM C24 Q_18 QPAD Q27 BC849B 4K7 SM 220U EL ! VI Cut-out R107 O3 TLP181 SM QPAD R42 +VI Protection 2K2 SM R157 470R SM 470R FU R101 4 R40 120K SM Q_20 Voltage Servo ATE_PAD VI Latch 150P PP Q_46 6 3 Q28 BC849B B Output R111 TO247HS2.8DEGC/W 470K SM C OUTPUT2 2U2H LAC C35 1K0 FU Q_16 R179 Z4A TL072 SM 33K SM R122 3 QPAD 2 L2 ATE_PAD Q30 BC849B R169 2K4 SM 1 R178 470K SM ATE_PAD VSERVO2 10U NP 150P PP 1R5 1W CF R63 1K8 SM C73 1 22K MF QPAD ! 10K SM Q29 BC849B R18 47N PE R171 R165 R196 Q_17 560R SM1% Q25 BC849B Q_62 R195 22R SM 1M0 SM Q_61 C77 47K SM R62 R41 330P PP C66 47K SM1% R181 Q26 BC849B 22R SM C C58 100N PC R113 5R6 2W CF#A D26 10U NP C74 Q6 2SA1964 R105 Q_63 47R SM D D8 10V 400MW R66 1N0 PP R57 R136 Q50 BC856B C49 220R 2W CF Q16 IRFP360LC R135 Q_52 ATE_PAD C78 100R FU R145 100R FU R144 R56 C59 100N PC 47N PE ! 220R FU R89 Q54 BC859B ! 470R FU ! R153 QPAD 2K7 SM 100K SM 100R SM 100R SM BAS16W SM 8K2 SM1% R188 Q_26 R183 Input R197 Q_24 QPAD Q_25 QPAD Gain 29dB or 28.3x INPUT2 HS11 TO247HS2.8DEGC/W R76 6 Q55 BC859B D34 D R162 SW2B 2PCO 5 R163 4 100R SM 1N4003F Bias Level detector C103 1N0 SM -15V R123 Z4B BSRef 33K SM Q_51 ATE_PAD ISERVO2 -SUP IQ2 ATE_PAD 5 7 6 TL072 SM R64 2M2 SM D33 C80 BAS16W SM A ! 10U NP 2 3 97_1085 SJB 22-9-97 Hardware Remote RX 2 97_1086 SJB 26-9-97 C66 change from 220P to 330P 3 97_1096 SJB 22-10-97 R54 chage from 10R to 100R 4 97_1102 SJB 11-11-97 R64 & 169 changed. C100 added. 5 23425 Replace with same type component only Circuit Diagram Notes: A & R Cambridge Ltd. Pembroke Avenue 98_1042 SJB 9-7-98 Denny Industrial Centre ECO No. INITIALS DATE Waterbeach Date Printed Filename Cambridge CB5 9PB 10-Jul-1998 J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\l829ct4_6.SCH Auto-Bias Servo 1 DRAWING TITLE Alpha 10 Amp R Ch. 4 5 6 PCB Issue 2 to 3 changes 6 DESCRIPTION OF CHANGE Drawn by: Sheet 3 of 5 SJB 7 DRAWING NO. ISSUE L829CT4 8 A 3 4 LED PCB 5 Demod Power Supply Detection BAS16W SM PWR Amp Control CST4.00 8 Z8C LM393A SM Designators ending in... N - For integrated amp only, P - For power amp only, R - For power amp with remote only, S - For power amp with no remote only, X - Other end of wire link. 2 3 HT48R30 28-DIP-B-0 Q_9 THTESTL ATE_PAD R33 6 6 6 5 5 5 4 4 4 Display PCB +5V 12K SM Z11 VREF VCC Vt2 OUT1 Vt1 OUT2 GND Vtemp LM56CIM 8 7 6 5 Q_1 Thermal Protection R234 10K SM 1 2 3 4 SP 2 Q_31 +5V VREF VCC Vt2 OUT1 Vt1 OUT2 GND Vtemp THERMX1 SP3_PWR VFAULT1 STBYLED1 REQ1 SDA1 SCK1 Z12 24C02 SM R65 Powerup B 4 3 2 1 LED PCB 220R SM L836CA 3 2 1 LK10R L815CA 8 7 6 5 1K0 SM FAN Remote PCB ATE IR RX Disable pad R225R STANDBY Z10 SP2 SP1 PROT1 220R SM LK9P C84 100N SM +5V REMKILL1 Q58R BC859B Rmin Q59 BC849B User IR RX Disable Link LM56CIM Q_32 R191 Q_15 22K SM n.b. R33 & R34 are supposed to be different! DRAWING TITLE 97_1085 SJB 22-9-97 Hardware Remote RX 2 Alpha 10 Amp Power Ctrl 97_1086 SJB 26-9-97 No Change 3 97_1096 SJB 22-10-97 No Change 4 97_1102 SJB 11-11-97 No Change 5 Circuit Diagram Notes: A & R Cambridge Ltd. Pembroke Avenue 98_1042 SJB 9-7-98 Denny Industrial Centre ECO No. INITIALS DATE Waterbeach Date Printed Filename Cambridge CB5 9PB 10-Jul-1998 J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\l829ct2_6.SCH 4 +5V 8 VDD A2 A1 A0 1 VSS R218P 1 SP 1 C FAULT1 REMI1 REMO1 4K7 SM 1 4 4K7 SM R215 2 R214 2 WP 2 7 5 6 STBYSW1 3 SW5A 2PCO SW3A 2PCO 3 +5V 23425 -SUP 1 3 10K SM BAS16W SM 47K SM D38 ABSUP 4 10U EL C16 5V6 400MW D43 Replace with same type component only + 11K SM Q_28 R189 22K SM Auto-Bias supply ABSUP1 A THTESTR ATE_PAD R34 R233 10K SM 1 2 3 4 6K8 1W CF Power-off Auto-Bias defeat R203 SK9N +PRE 1 2 3 4 5 6 7 -PRE Fault 8 Rmin 9 RemOut 10 11 SP2MuteN 12 SP1MuteN 13 Prot 14 +8V 15 16 ThermX_RST 17 SP3_PWR 18 VFault 19 STBYLED 20 REQ 21 SDA 22 SCK FFC22V FFC22V 2K4 SM 10K SM Q38 2SA1085 R205 -SUP 10U EL R46 C15 R204 10K SM 33K SM R125 33K SM R124 R219 + Fault Fault Q_64 RESET SP2SW1 SW3B 2PCO + Q56 BC859B Mains/VI Fault detection Pwrok 3 2 1 1N4003F 28 27 26 25 24 23 22 21 20 19 18 17 16 15 PB5 PB6 PB4 PB7 PA3 PA4 PA2 PA5 PA1 PA6 PA0 PA7 PB3 OSC2 PB2 OSC1 PB1 VDD PB0 RES VSS PC5 (TMR)/INT PC4 PC0 PC3 PC1 PC2 R116 R43 4 10K SM Speaker/Amp Protection 1U0 EL ! C3 100N SM 7 V- C50 D27 R70 ACDet 4V7 400MW R207 O 47K SM FB V+ 6 D29 9 RC IN2 10V 400MW 5 100U EL + C26 C27 + R206 Powerup SW5B 2PCO D9 100K SM 0V 3 B SP2MuteN SP1MuteN ProtStat Q58 BC859B Prot Z5 TA7317P PreMuteN BAS16W SM ! 8 PWR IN1 100U EL R186 120K SM 2 RFProt Therm Cutout R20 1K0 FU 1K0 FU BAS16W SM VFault PREMTN1 ! 1 2 3 4 5 6 7 8 9 10 11 12 13 14 SW4A 2PCO R19 R21 1K0 FU Powerup Z9 SP1SW1 D35 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 +UREG SDA SCL 10U EL + C17 100N SM Q34 BC849B 100K SM 1 ! BAS16W SM Q45 2SC2547 4K7 SM SK6 SW4B 2PCO D36 C25 + D37 Q46 2SC2547 100U EL R32 R235 47K SM R45 47K SM R44 100K SM Lout LVProt 100K SM PRTSUP1 Option PCB D48 D40 RemMute +5V C34 R192 1U0 EL + +SUP R98 27K SM Q47 2SC2547 Rout Send 4V7 400MW R175 R173 470R SM Q_54 22P SM BAS16W SM BAS16W SM D28 Raw X1 C11 2K7 1W CF Pre-Amp Out Break -SUP RVProt D Q_33 1M0 SM R201N R142 Q_53 D30 R190 REMOTE L829CT5_6.SCH 4K7 SM 22P SM C82 Q_27 R147 Q_14 D20 RLY 51SB12T 1N4003F 1N4003F RLY5NC D26N RLY SPST SPKR D24 RLY SPST SPKR Speakers 2 1N4003F RLY4B RLY3B RLY SPDT 24V D25 2K7 1W CF 2WVERTJUMPER Soft Start RLY6B RLY2B RLY SPST SPKR 1 2 RLY1B Speakers 1 1N4003F D23 33K SM R126 33K SM R127 27K SM 27K SM R185 R31 120K SM R218 PL1 R200 RLY SPST SPKR +SUP BAS16W SM STBY/POWER R100 R G C81 LED1P LED RED/GRN C 8 Rout 470R SM Lout D Pwrok 7 RF Protection L836CA Fit Jumper to PL1 for test power-up from external d.c. supply 6 LK9X 4 3 2 1 4K7 SM 2 470K SM 1 5 6 PCB Issue 2 to 3 changes 6 DESCRIPTION OF CHANGE Drawn by: Sheet 4 of 5 SJB 7 DRAWING NO. ISSUE L829CT2 8 A 2 RemRaw Raw C98 Q_39 Q31 BC849B Q_67 +5V O1 220P SM R28 +UREG ! 10K SM R83 R227 10K SM R223 10K SM + C83 100U EL REMJK2 Q_65 TLP181 SM Far from PCB JACK3.5X2 Q37 BC849B 27MH R198 L3 10N SM Q_68 4K7 SM 470R 1W CF REMJKO1 Near to PCB JACK3.5X2 SK10A C Remote Out Send 1K5 SM R212 +5V Demod 4K7 SM Q61 BC849B R211 10K SM R236 Z13B Q62 BC849B Remote Buffer Demod 6 LM393A SM B 8 1K8 SM +5V R238 1N0 SM C93 B 3 Break 7 Q_38 4 D SK10B Q_66 Q_2 +5V 5 R226 1 R221 Q57 BC859B Q_40 Q_37 Carrier Demodulator 680P PP C92 1K8 SM 1K5 SM C91 R239 R237 100K SM R222 Q_34 10K SM 100K SM Q_36 LM393A SM R210 R220 3 10K SM Carrier Filter 1 1K5 SM R80 2 C 6 Remote In R209 Z13A 4K7 SM R225 10R FU Q_35 REMJK1 R213 47R SM D +5V 4 3 100R SM 1 Z13C LM393A SM 4 C97 100N SM DRAWING TITLE 97_1085 SJB 22-9-97 Hardware Remote RX 2 Alpha 10 Amp Remote Bus 97_1086 SJB 26-9-97 No Change 3 97_1096 SJB 22-10-97 R210, R198, R212 change 4 97_1102 SJB 11-11-97 No Change 5 23425 A Circuit Diagram Notes: A A & R Cambridge Ltd. Pembroke Avenue 98_1042 SJB 9-7-98 Denny Industrial Centre ECO No. INITIALS DATE Waterbeach Date Printed Filename Cambridge CB5 9PB 10-Jul-1998 J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\L829CT5_6.SCH 1 2 3 PCB Issue 2 to 3 changes 6 DESCRIPTION OF CHANGE Drawn by: SJB Sheet 5 of 5 ISSUE DRAWING NO. 4 L829CT5 1 5 P4 +5V P12 RIN THRU_PIN THRU_PIN THRU_PIN THRU_PIN THRU_PIN O/P GND Case +8V RST PWRLED STBYLED REQ SDA SCL FFC22H LK1013 LK1019 LINK10NP LK1008 LINK10NP LK1014 LINK10NP LK1020 LINK10NP LK1003 LINK10NP LK1009 LINK10NP LK1015 LINK10NP LK1021 LINK10NP LK1004 LINK10NP LK1010 LINK10NP LK1016 LINK10NP LK1022 LINK10NP LK1005 LINK10NP LK1011 LINK10NP LK1017 LINK10NP LINK10NP LK1006 LINK10NP LK1012 LINK10NP LK1018 LINK10NP LINK10NP LINK10NP 1 BARCODE LABEL BARCODE_A10_DISP DD I 3R3R FU Vin DATA C1 100N CD LOAD +5V Z1 7805 R1 Vout PD100 PD101 TOOLINGTOOLING O PWRLED + + C6 220U EL C3 100N CD C2 470U EL 25V VFD_D3 VFD_D2 VFD_D1 VFD_D0 R13 150R MF LK3 3 2 1 VFD_E VFD_RS CLOCK GND +5V ROW1 LED GREEN +5V COL1 150R MF R16 4K7 MF D6 LED2 1N4148 R3 GND B D7 LED GREEN LED100 STBYLED LK2 3 2 1 1N4148 LED3 SW4 TACTSW2 GND Q2 ZVNL120 COL3 COL2 COL7 COL6 COL5 COL4 R4 REQ R18 100R MF COL3 COL4 SCL R19 100R MF VFD_RS COL1 D1 ROW2 SW5 TACTSW2 GND D9 COL5 GND R6 150R MF COL6 A D11 TAPE2_2 TAPE2_2 TAPE1_1 TAPE1_1 SOURCE_0SOURCE_0 TAPE1_2 TAPE1_2 SOURCE_1SOURCE_1 TAPE2_0 TAPE2_0 SOURCE_2SOURCE_2 COL7 SW7 TACTSW2 D4 23425 1N4148 LED GREEN A & R Cambridge Ltd. Pembroke Avenue Denny Industrial Centre Waterbeach Cambridge CB5 9PB 150R MF STBYLED STBYLED RIN DATA DATA ROUT CLOCK CLOCK A Circuit Diagram PHIL Sheet 1 of 1 3 4 5 15/5/97 2-Oct-1998 J:\PROJECTS\A10amp\CIRCS\display\L831ct_1.schDRAWN 2 REQ DRAWING TITLE Filename 1 SDA SDA REQ ALPHA 10 AMP DISPLAY R8 GND SCL SCL ** SOCKETED ** TAPE2_1 TAPE2_1 SW11 TACTSW2 150R MF LED7 1N4148 SDA R_OUT 1N4148 R7 LED GREEN B R_IN D3 LED6 GND TAPE2_0 TAPE2_1 TAPE2_2 TAPE1_0 TAPE1_1 TAPE1_2 DATA R21 LOAD 100R MF CLOCK LED RED/GRN LOAD LOAD SW10 TACTSW2 D10 1N4148 R PHASE_B PHASE_A ROW1 ROW2 SOURCE_0 SOURCE_1 SOURCE_2 ROUT 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 1N4148 SW6 TACTSW2 LED GREEN 100N CD C4 100N CD TAPE1_0 TAPE1_0 D2 LED5 1N4148 MCLR RB7 RA0 RB6 RA1 RB5 RA2 RB4 RA3 RB3 RA4/T0CKI RB2 RA5/SS RB1 RE0/RD RB0/INT RE1/WR VDD RE2/CS VSS VDD RD7/PSP7 VSS RD6/PSP6 OSC1/CLKIN RD5/PSP5 OSC2/CLKOUT RD4/PSP4 RC0/T1OSI/T1CKI RC7 RC1/T1OSO RC6 RC2/CCP1 RC5/SDO RC3/SCK/SCL RC4/SDI/SDA RD0/PSP0 RD3/PSP3 RD1/PSP1 RD2/PSP2 C5 SW9 TACTSW2 R5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 PIC16C65 1N4148 150R MF LED GREEN COL2 COL3 VFD_D3 VFD_D2 VFD_D1 VFD_D0 VFD_E X1 CST4.00 SW8 TACTSW2 LED4 1N4148 COL4 COL5 COL6 COL7 RP1 100K X 8 COM 150R MF LED GREEN D8 2 3 4 5 6 7 8 9 G Z2 COL2 150R MF SW3 TACTSW2 C L815CA L815CA RST 1 R15 4K7 MF PD7 PD8 TOOLING TOOLING PD9 TOOLING R14 330R MF R17 10K MF R22 100K MF ROW2 R20 100K MF PD3 PD4 TOOLING TOOLING NEAR Z1, Z2 ROW1 R2 PD10 TOOLING PD1 PD2 TOOLING TOOLING +5V SW2 TACTSW2 R12 10K MF PD11 PD12 PD13 PD14 PD5 PD6 TOOLINGTOOLINGTOOLINGTOOLING TOOLING TOOLING Itron VFD Module 4K7 MF GND DRILL_DETAIL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 +8V +5V R9 1N4148 DD_ISSUESML D R11 10K MF 3 GND VCC NC RS R/W (WR) E (RD) DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 FOLD Z1 FLAT TO BOARD +8V LED1 Drilling Detail PHASE_B FFC22H D5 DD2 Drilling Detail Issue Box PHASE_A PCB SILK SCREEN). SW1 TACTSW2 Update Box (Small) UPDATE_SML SK3 ALPS_ENCODER M1 ITRON_VFDM SOURCE_0 SOURCE_1 SOURCE_2 TAPE2_0 TAPE2_1 TAPE2_2 TAPE1_0 TAPE1_1 TAPE1_2 GND RIN ROUT SK2 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 RX1 SBX1610-52 G SK1 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 LK1007 LINK10NP LK1002 +5V 4K7 MF 2 C8 100N CD TO PREAMP Q1 BC557B R10 +5V TO POWER AMP LK1001 UDB L831PB 2 P13 D C 1 3 P11 8 EL1 PCB LK1 CUT LK1 TO DISABLE IR RECEIVER 10MM LINK THRU_PIN THRU_PIN THRU_PIN THRU_PIN P10 7 L831PB THRU_PIN THRU_PIN THRU_PIN THRU_PIN P5 P6 P7 P8 P9 6 B A P3 4 2 1 P2 3 C P1 2 BY CHK BY 6 ECO No. L831CT DESCRIPTION OF CHANGE DATE 7 1 DRAWING NO. ISSUE 8 2 3 R24 22K SM AVR 1K0 SM PHONO4G SK2B C20 47P SM AVR C21 47P SM Aux2L Tape2_0 Tape2_1 Tape2_2 AUX2L R25 F N PlugL 8 7 R53 22K SM -7V2 B SK3A 1 C23 47P SM Tape1IL R27 EMC PlugR R55 22K SM N R28 22K SM TAPE1IR 1K0 SM C24 47P SM 1 TAPE2IL EMC Tape2IL 1 2 3 4 5 6 7 8 R29 TAPE2IR R30 22K SM 1K0 SM 16 14 12 10 8 6 4 2 DIL16 VPLG 1 Aux1R L Aux1L Aux1R CDR TunerR AVR Aux2R Tape1IR Tape2IR PlugR 13 14 15 12 1 5 2 4 Source_0 Source_1 Source_2 6 11 10 9 8 7 -7V2 1 Tape2IR Aux1L VDD 3 X Z4B OPA2134PA SM 5 Null_R 20 19 18 17 16 15 14 13 12 11 +6V8 C4 +6V8 -7V2 OPA2134PA SM 8 4 8 4 D2 C32 + 6V8 400MW 22U EL + 22U EL LK2 +15V 1 2 3 4 5 6 7 8 GND C C9 L832CA 1N0 SM R4 56R SM NAN1 NASW1 R2 -7V2 R5 1K8 SM C3 R7 6 100K SM 10U NP Data INH A B C R34 Clock Load R33 1K0 SM 1K0 SM R32 1K0 SM C38 R77 LGND 100R SM 1N0 SM GND VEE R31 1K0 SM MAX4051 SM QPAD QPAD QPAD QPAD QPAD QPAD QPAD QPAD QPAD Q_11 Q_10 Q_9 Q_14 Q_13 Q_12 Q_17 Q_16 Q_15 Tape1_2 Tape1_1 Tape1_0 Tape2_2 Tape2_1 Tape2_0 Source_2 Source_1 Source_0 R75 R73 R71 R69 FIDUCIAL TL1 TOOLING TL2 TOOLING 1K0 SM -7V2 TL3 TOOLING TL4 TOOLING 100K SM 100K SM 100K SM 100K SM R76 R74 R72 R70 R68 100K SM 100K SM 100K SM 100K SM 100K SM SK7 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 CLOCK LOAD DATA DGND SOURCE_2 SOURCE_1 SOURCE_0 TAPE2_2 TAPE2_1 TAPE2_0 TAPE1_2 TAPE1_1 TAPE1_0 FFC22V SK8 FFC32V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 -15V Aux1L Aux1R CDL CDR B TunerL TunerR AVL AVR Aux2L Aux2R Tape1IL Drilling Detail Tape1IR Tape2IL BARCODE LABEL Update Box Tape2IR PLUGINL PlugL DD1 PlugR PCB PLUGINR 23425 L832PB Drilling Detail Issue Box Photo Strip DD_ISSUE A & R Cambridge Ltd. Pembroke Avenue Denny Industrial Centre Waterbeach Cambridge CB5 9PB 1K0 SM C14 DRAWING TITLE A A10 Amp Pre-Amp PCB TL5 TL6 TOOLING_BIG TOOLING_BIG R18 22K SM Aux1R Circuit Diagram Sheet 1 of 1 Filename L832CT 2-Oct-1998 DRAWN J:\PROJECTS\A10amp\CIRCS\PREAMP\L832ct_1.sch Phono PCB 2 6K8 SM1% 7 47P SM L823CA C8 1N0 SM LM1972 X0 X1 X2 X3 X4 X5 X6 X7 R45 22K SM PHONO2G D1 6V8 400MW C31 22U EL + R17 R44 1K0 SM AUX1R GND AC IN2 OUT1 GND2 GND1 VEE1 IN1 OUT2 GND AC GND AC GND AC VDD2 VEE2 GND AC LOGIC GND VDD1 CLOCK DATA OUT LOAD/SHIFT DATA IN -7V2 FD_2 FIDUCIAL AUX1L OPA2134PA SM R38 FD_1 Pre-Amp Audio Output R67 +6V8 16 S.J.B. SK5 47P SM PH15P PHGND1 PHOR PHGND2 PHGND3 PHOL PHGND4 PH15N R EMC 15 13 11 9 7 5 3 1 C26 LK1X 8 7 6 5 4 3 2 1 MAX4051 SM C13 47P SM 1N0 SM PHONO4G PL6 A 10U NP GND VEE +15V 47R SM ROUT OPA2134PA SM Z14 1 2 3 4 5 6 7 8 9 10 + C2 22U EL R63 7 6 R66 -15V C37 1N0 SM R57 22K SM N 8 7 5 6K8 SM1% INH A B C +15V LK1 L823CA R56 1K0 SM F 6 11 10 9 Tape1IR C25 47P SM SK4A Source_0 Source_1 Source_2 Z3B 47R SM OPA2134PA SM Z13C TL072 SM Z6 -15V -15V MAX4051 SM +6V8 16 X0 VDD Z4A X1 3 Null_L 3 X2 X 1 X3 R6 2 X4 100K SM X5 OPA2134PA SM C1 X6 X7 Z7 GND VEE -7V2 13 14 15 12 1 5 2 4 LOUT R62 1 -7V2 INH A B C 8 7 Aux1L CDL TunerL AVL Aux2L Tape1IL Tape2IL PlugL SETOFF MAX4051 SM Z11 +6V8 16 X0 VDD X1 3 X2 X X3 X4 X5 X6 X7 6 11 10 9 Tape2_0 Tape2_1 Tape2_2 R54 1K0 SM F 1N0 SM C35 Aux2R TAPE1IL PHONO4G C36 C22 47P SM GND VEE 13 14 15 12 1 5 2 4 Aux1R CDR TunerR AVR Aux2R Tape1IR 1K0 SM PHONO4G INH A B C R52 1K0 SM R26 22K SM AUX2R 6 11 10 9 +15V To Plug-in PCB N 13 14 15 12 1 5 2 4 Aux1L CDL TunerL AVL Aux2L Tape1IL R51 22K SM Z12C TL072 SM MAX4051 SM Z10 +6V8 16 X0 VDD X1 3 X2 X X3 X4 X5 X6 X7 -15V D Z3A 3 +15V 2 GND VEE -7V2 PHONO4G 680P PP EMC 8 7 R50 1K0 SM Q_4 QPAD INH A B C AVL R23 F 1N0 SM C34 AVL 47R SM TL072 SM -15V R3 56R SM PASW1 680P PP C19 47P SM 1 C Tape1_0 Tape1_1 Tape1_2 7 Z3C 1K0 SM PAN1 TAPE2OR R61 6 QPAD Z4C R1 N 5 C10 47P SM SK2A 6 11 10 9 TunerR Z13B Q_21 +6V8 C11 1K0 SM C18 PHONO4G Tape2IR PlugR F Q_3 QPAD R65 R22 22K SM TUNERR 47R SM TL072 SM 1K5 SM1% N 2 QPAD +15V TAPE2OL R60 1 R64 R49 22K SM SK4B 3 MAX4051 SM Z9 +6V8 16 X0 VDD X1 3 X2 X X3 X4 X5 X6 X7 1K5 SM1% R48 1K0 SM F 13 14 15 12 1 5 2 4 Aux1R CDR TunerR AVR Aux2R Q_20 8 R21 Q_2 QPAD Z13A 8 TUNERL -7V2 PHONO4G 4 SK1B TunerL TAPE1OR 47R SM TL072 SM GND VEE 10K SM C17 47P SM 6 4 8 7 +15V R59 7 QPAD 22K SM 47P SM INH A B C F N 5 R14 CDR 8 Q_1 QPAD Z12B Q_19 R80 C16 7 TAPE1OL 47R SM TL072 SM 22K SM Tape1_0 Tape1_1 Tape1_2 1K0 SM PHONO4G 6 11 10 9 R58 1 2 QPAD R81 R20 22K SM CDR 6 SK3B 3 R39 N Z12A Q_18 3 X R40 EMC Tape2IL PlugL R47 22K SM 5 +6V8 16 100K SM R46 1K0 SM VDD 100K SM R19 F 1N0 SM C33 D CDL X0 X1 X2 X3 X4 X5 X6 X7 R41 1 13 14 15 12 1 5 2 4 Aux1L CDL TunerL AVL Aux2L CDL 100K SM Z8 C15 47P SM SK1A 4 100K SM 1 3 4 5 BY CHK BY 6 ECO No. DESCRIPTION OF CHANGE DATE 7 1 DRAWING NO. ISSUE 8
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.2 Linearized : No Creator : G:TEXT...A10PPTS.MA [PFP#1080144465] Create Date : 02 October 1998 16:08 Title : ALPHA 10/10P SERVICE MANUAL Author : Unknown Producer : Acrobat PDFWriter 3.02 for Windows Subject : Modify Date : 2000:09:07 16:16:45 Page Count : 19EXIF Metadata provided by EXIF.tools