ALPHA 10/10P SERVICE MANUAL - Acoustic Psychos · ALPHA 10/10P SERVICE MANUAL Figure 3 Micro Block...
Transcript of ALPHA 10/10P SERVICE MANUAL - Acoustic Psychos · ALPHA 10/10P SERVICE MANUAL Figure 3 Micro Block...
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
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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-ampoutput mute relay which are only fitted to the A10 and the power/standby LED and links to parallel the inputconnections to what would otherwise be the pre-amp output for use with a mono link. The amplifier is based on theD290/Alpha 9 design but with lower gain, a higher current and higher voltage driver stage and a high power outputstage. The current servo has been improved over the Alpha 9 to be output device independent. A micro supervisesthe amplifier state, switch state and remote control functions. Provision is made for an additional 3rd channel PCB tobe added with power supply and protection circuitry access.
Input stageThe input connections are taken either from the pre-amp connector, LK12X, or the external power amp input on theA10 depending on the position of SW1. On the A10P, the input is taken from the external power amp input only withprovision for a mono shorting link by having two parallel input connectors. On the A10, there is a mute relay on thepre-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. errorcorrection current is injected into the base of Q19 and 26 from the voltage servo Z3 and 4, to null any voltage offset atthe amplifier output.The input and voltage amplifier stages both run off regulated 15 Volt suppies. The input stage is an NPN differentialinput, Q18, 19, 25 and 26, with an adjustable current source, Q21 and 28 which sets the quiescent current through allthe 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 AmplifierThe voltage amplifier consists of another differential pair, Q48, 49, 50 and 51. Q48 and 50 are the positive pulling sideof 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 low-impedance side of the input stage current mirror. The network ensures a fast, symmetrical slew rate of the voltageamplifier stage.Network C69, 70, R172, 174 ensure the overall stability of the amplifier by reducing the open loop gain at highfrequencies.
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 theiremitters. This stage runs on the full supply rail voltages and splits the level shifts the signal via Q2, 3, 5 and 6 to drivethe gates of the output MOSFETs, Q13, 14, 15 and 16. Q2 and 3 simply buffer the inverted signal at the collector ofQ36 to drive the low side MOSFETs, Q13 and 15. Q5 and 6 invert the inverted signal at the collector of Q41 and Q44to drive the high side MOSFETs, Q14 and 16. To ensure that the high side drive is able to swing far enough to ensurethe high side MOSFETs can be driven to saturation, a bootstrap, C5, D41 R57, C78 and D22 boosts the driver stagepower supply during positive excursions of the amplifier output. This is inactive at low output voltage swings as anydistortion 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 ofthe MOSFET it protects. A high current is permitted through the MOSFET for a few milliseconds after which time thecurrent is throttled down to about 10A peak. A second current sensing network, Q32 and Q35 activates theover-current protection cut-out if the low side is current limiting for too long, a few hundred milliseconds. The currentsensing resistors do not reduce the transconductance of the MOSFETs because the driver stage is referenced to theMOSFET source. This means that the current through the driver stage is also sensed but this is insignificant as fas asover-current protection sensing is concerned.
Auto-bias
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Figure 1Block Diagram of Power Amplifier
Sense Resistor
Comparitor Output
Measured Current (blue)
Other MOSFET
-ve MOSFET
50% 49% 52%
Bias correct Under Biassed Over Biassed
Figure 2 Auto-bias under dynamic conditions
The bias is regulated in two modes, one where these is no signal and one when signal is being split between the highand 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 whichis driver current. The current through the MOSFETs is about 80mA at this point. The comparator output is level shiftedto drive the integrating current servos Z3 and 4. This adjusts the amplifier current so that, on average, the bias level isheld at the reference point.Under dynamic conditions, the low side drive will definitely be conducting more current than the reference (80mA) forhalf the signal cycle and will be switched off for the other half. The result is a rectangle wave output from thecomparator, Z4.
When the output stage is biassed correctly (class AB operation) the comparator output toggles when the currentthrough the sense resistor for the -ve MOSFET is equal to the d.c. mode static reference level and at the half waypoint of the signal. The result is a perfect square wave output from the comparator. Under these conditions, the +veMOSFET 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 thereference level resulting in a rectangle wave output from the comparator at a duty cycle slightly less than 50%. If thebias level is higher than the reference then the -ve MOSFET will spend slightly more than half the time conducting ator above the reference level resulting in a rectangle wave output at a duty cycle slightly more than 50%. The changein duty cycle away from 50% causes the integrator, Z3 and Z4 to adjust the bias level via the bias adjustingtransistors, Q22 and 29.The integrator has a reference, the a.c. mode dynamic reference, for a bias point slightly higher than for a 50% dutycycle. This eliminates the possibility of the bias being slowly throttled due to component tolerance mismatch resultingin a reference which would pull the servo down. A high dynamic bias reference level simply stabilises the bias slightlyhigher 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
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
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through the amplifier due to C72 and 74 d.c. blocking capacitors and on average the signal will be symmetrical. Anyshort-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 themain supply rails. This supply is made available to an option board. The maximum load on these supplies is 150mAfor less than 2W dissipation in Q1 and 4. These supplies are then regulated to +/-15V by Z1 and 2. These supplies areused by the input stages of the power amplifiers including any 3rd channel board, the pre-amplifier board and anoptional phono amplifier board. The positive voltage regulator, Z1, has a larger heatsink than Z2 because the phonoboard 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 beswitched on or off remotely from the remote bus or, in the case of the integrated amplifier, from an infra red remotecontrol. 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 andpower status to the display micro and remote control commands received. It is also possible for the display micro tocontrol functions on the power amplifier board. The option board also uses this bus to receive any remote controlcommands and communicate with the display micro.The external remote bus handles raw information from infra red sensors with no demodulating. The remote bus inputcan be echoed to the output through a buffer circuit. The incoming signal is demodulated by Z13. Raw signal is alsosent to the micro interrupt line, pin 12, for assessing the noise on the remote bus. In addition, any d.c. signal on theremote bus is sensed on pin 2 of the micro in when it is not being used as an output to mute the hardware remoteecho buffer. The micro must modulate any output it sends to this bus with a carrier (37KHz). The output will drive oneor two series infra red LEDs directly.
The list below shows how various fault conditions can be deduced simply from the Power LED behaviour.
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• On power up, the protection should be engaged. This is checked after 3 seconds on pin 9 of Z9. If it isn'thappening, 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. Thisis 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 voltageoffset or over-current. Over-current should latch resulting in a shut down after 16 seconds. Voltage offsetsshould clear themselves if brief.
• A temperature fault on pin 25 results in the power LED flashing slow amber and can last indefinitely until itclears. 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
C1 ELST 100U 100V 2N710B
C2 ELST 100U 100V 2N710B
C3 MLC 100N 50V X7R 10% SM 2C410
C4 ELST 100U 100V 2N710B
C5 ELST 100U 100V 2N710B
C6 ELST 22U 63V 2N622
C7 ELST 10U 50V 2N610
C8 ELST 22U 63V 2N622
C9 ELST 10U 50V 2N610
C10 ELST 10U 50V 2N610
C11 ELST 1U0 50V 2N510
C12 PPRO 4N7 63V 5% RA 2D247N
C13 SUPPR CAP 4N7 250V 2K247
C14 PPRO 150P 5% 63V RA 2D115
C15 ELST 10U 50V 2N610
C16 ELST 10U 50V 2N610
C17 ELST 10U 50V 2N610
C18 ELST TNC 10m 63V RA 40mm 2N910A
C19 ELST TNC 10m 63V RA 40mm 2N910A
C20 PPRO 4N7 63V 5% RA 2D247N
C21 PPRO 4N7 63V 5% RA 2D247N
C22 ELST 100U 25V 2N710
C23 ELST 100U 25V 2N710
C24 ELST 100U 25V 2N710
C25 ELST 100U 25V 2N710
C26 ELST 100U 25V 2N710
C27 ELST 100U 25V 2N710
C28 MLC 470P 100V NPO 5% SM 2C147
C29 MLC 470P 100V NPO 5% SM 2C147
C30 MLC 470P 100V NPO 5% SM 2C147
C31 MLC 100N 50V X7R 10% SM 2C410
C32 ELST 22U 63V 2N622
C33 ELST 22U 63V 2N622
C34 MLC 100N 50V X7R 10% SM 2C410
C35 PPRO 150P 5% 63V RA 2D115
C36 PPRO 4N7 63V 5% RA 2D247N
C37 PPRO 1N0 5% 63V RA 2D210
C38 PPRO 680P 63V 5% RA 2D168
C39 PPRO 680P 63V 5% RA 2D168
C40 MLC 10N 50V X7R 10% SM 2C310
C41 MLC 10N 50V X7R 10% SM 2C310
C42 MLC 10N 50V X7R 10% SM 2C310
C43 MLC 10N 50V X7R 10% SM 2C310
C44 SUPPR CAP 4N7 250V 2K247
C45 ELST 10U 50V 2N610
C46 SUPPR CAP 4N7 250V 2K247
C47 SUPPR CAP 4N7 250V 2K247
C48 ELST 3M3 25V 2N833
C49 PPRO 1N0 5% 63V RA 2D210
C50 ELST 1U0 50V 2N510
C51 ELST 220U 16V 2N722
C52 ELST 220U 16V 2N722
C53 ELST 220U 16V 2N722
C54 ELST 220U 16V 2N722
C55 PCRB 100N 100V 10% RA 5mm 2H410
C56 PCRB 100N 100V 10% RA 5mm 2H410
C57 PCRB 100N 100V 10% RA 5mm 2H410
C58 PCRB 100N 100V 10% RA 5mm 2H410
C59 PCRB 100N 100V 10% RA 5mm 2H410
C60 PCRB 100N 100V 10% RA 5mm 2H410
C61 PPRO 100P 63V 5% RA 2D110N
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C62 PPRO 100P 63V 5% RA 2D110N
C63 PPRO 150P 5% 63V RA 2D115
C64 PPRO 330P 5% 63V RA 2D133
C65 PPRO 150P 5% 63V RA 2D115
C66 PPRO 330P 5% 63V RA 2D133
C67 PEST 15N 63V 5% 2K315
C68 PEST 15N 63V 5% 2K315
C69 PSTY 56P 160V ENCAP 1PF% 2F056
C70 PSTY 56P 160V ENCAP 1PF% 2F056
C71 ELST NON POLAR 10UF 35V 2U610
C72 ELST NON POLAR 10UF 35V 2U610
C73 ELST NON POLAR 10UF 35V 2U610
C74 ELST NON POLAR 10UF 35V 2U610
C75 PEST 47N 63V 10% 2K347
C76 PEST 47N 63V 10% 2K347
C77 PEST 47N 63V 10% 2K347
C78 PEST 47N 63V 10% 2K347
C79 ELST NON POLAR 10UF 35V 2U610
C80 ELST NON POLAR 10UF 35V 2U610
C81 MLC 22P 100V NPO 5% SM 2C022
C82 MLC 22P 100V NPO 5% SM 2C022
C83 ELST 100U 25V 2N710
C84 MLC 100N 50V X7R 10% SM 2C410
C85 MLC 100N 50V X7R 10% SM 2C410
C86 MLC 100N 50V X7R 10% SM 2C410
C87 MLC 100N 50V X7R 10% SM 2C410
C88 MLC 100N 50V X7R 10% SM 2C410
C89 MLC 100N 50V X7R 10% SM 2C410
C90 ELST 10U 50V 2N610
C91 PPRO 680P 63V 5% RA 2D168
C92 MLC 10N 50V X7R 10% SM 2C310
C93 MLC 1N0 50V X7R 10% SM 2C210
C94 MLC 10N 50V X7R 10% SM 2C310
C95 ELST 10U 50V 2N610
C96 ELST 10U 50V 2N610
C97 MLC 100N 50V X7R 10% SM 2C410
C98 MLC 10N 50V X7R 10% SM 2C310
C99 CERD 10PF 63V 10% 2A010
C100 CERD 10PF 63V 10% 2A010
D1 ZENER 15V 400MW 3C11504
D2 ZENER 15V 400MW 3C11504
D3 ZENER 10V 400MW 3C11004
D4 ZENER 10V 400MW 3C11004
D5 ZENER 10V 400MW 3C11004
D6 ZENER 10V 400MW 3C11004
D7 ZENER 10V 400MW 3C11004
D8 ZENER 10V 400MW 3C11004
D9 ZENER 10V 400MW 3C11004
D10 RECTIFIER 6A40 6A 400V 3B6A40
D11 RECTIFIER 6A40 6A 400V 3B6A40
D12 RECTIFIER 6A40 6A 400V 3B6A40
D13 RECTIFIER 6A40 6A 400V 3B6A40
D14 RECTIFIER 1N4003F 1A 200V 3B4003
D15 RECTIFIER 1N4003F 1A 200V 3B4003
D16 SSDIODE 1N4148 75V 3A4148
D17 SSDIODE 1N4148 75V 3A4148
D18 RECTIFIER 1N4003F 1A 200V 3B4003
D19 RECTIFIER 1N4003F 1A 200V 3B4003
D20 SSDIODE 1N4148 75V 3A4148
D21 RECTIFIER 1N4003F 1A 200V 3B4003
D22 RECTIFIER 1N4003F 1A 200V 3B4003
D23 RECTIFIER 1N4003F 1A 200V 3B4003
D24 RECTIFIER 1N4003F 1A 200V 3B4003
D25 RECTIFIER 1N4003F 1A 200V 3B4003
D26 SSDIODE 1N4148 75V 3A4148
D27 RECTIFIER 1N4003F 1A 200V 3B4003
D28 SSDIODE 1N4148 75V 3A4148
D29 ZENER 4V7 400MW 3C04704
D30 SSDIODE 1N4148 75V 3A4148
D31 SSDIODE 1N4148 75V 3A4148
D32 SSDIODE 1N4148 75V 3A4148
D33 SSDIODE 1N4148 75V 3A4148
D34 SSDIODE 1N4148 75V 3A4148
D35 SSDIODE 1N4148 75V 3A4148
D36 SSDIODE 1N4148 75V 3A4148
D37 SSDIODE 1N4148 75V 3A4148
D38 SSDIODE 1N4148 75V 3A4148
D39 ZENER 12V 3W SM 3C03C12
D40 SSDIODE 1N4148 75V 3A4148
D41 ZENER 12V 3W SM 3C03C12
D42 SSDIODE 1N4148 75V 3A4148
D43 ZENER 5V6 400MW 3C05604
D44 ZENER 24V 3W SM 3C03C24
D45 RECTIFIER 1N4003F 1A 200V 3B4003
D46 SSDIODE 1N4148 75V 3A4148
D47 SSDIODE 1N4148 75V 3A4148
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D48 ZENER 4V7 400MW 3C04704
D49 SSDIODE 1N4148 75V 3A4148
D50 ZENER 5V6 400MW 3C05604
F4 FUSE 20mm 2.5A AS C12256
F4 INS COVER PCB FUSEHOLDER F022
F4 FUSEHOLDER 20mm PCB 8S004
F5 FUSEHOLDER 20mm PCB 8S004
F5 INS COVER PCB FUSEHOLDER F022
HS1 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS1 HEATSINK TO220 13 DEGC/W F005
HS3 HEATSINK TO220 CLIP 23DEG/W F004
HS5 CARBON THERMAL PAD E816MC
HS5 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK
HS5 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS7 HEATSINK TO220 CLIP 23DEG/W F004
HS9 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS9 CARBON THERMAL PAD E816MC
HS9 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK
HS10 HEATSINK TO220 CLIP 23DEG/W F004
HS11 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK
HS11 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS11 CARBON THERMAL PAD E816MC
HS12 CARBON THERMAL PAD E816MC
HS12 HEATSINK TO247 CLIP 2DEGC/W E803HK E803HK
HS12 HEATSINK CLIP TO220 13/8.6 DC/W F006
HS13 HEATSINK TO220 CLIP 23DEG/W F004
HS14 HEATSINK TO220 CLIP 23DEG/W F004
L1 INDUCT 2U2 15x25mm AD2018 7D002A
L2 INDUCT 2U2 15x25mm AD2018 7D002A
L3 27mH INDUCTOR 7D327
LED1P LED RED/GREEN 5MM 3D002
LK9P JUMPER 4-WAY LEAD L836CA
O1 OPTO ISOLATOR 4N35 5T4N35
PCB PRINTED CIRCUIT BOARD L829PB
Q1 TRANS AUDIO DRIVER N 2SC5248 4B5248
Q2 TRANS AUDIO DRIVER N 2SC5248 4B5248
Q3 TRANS AUDIO DRIVER N 2SC5248 4B5248
Q4 TRANS AUDIO DRIVER P 2SA1964 4B1964
Q5 TRANS AUDIO DRIVER P 2SA1964 4B1964
Q6 TRANS AUDIO DRIVER P 2SA1964 4B1964
Q7 TRANS LF SS P SM BC856B 4A856B
Q8 TRANS LF SS N SM BC846B 4A846B
Q9 TRANS LF SS N SM BC846B 4A846B
Q10 TRANS LF SS N SM BC846B 4A846B
Q11 TRANS LF SS N SM BC846B 4A846B
Q12 TRANS LF SS N SM BC847B 4A847
Q13 TRANS POWER MOSFET IRPF360LC 4K360
Q14 TRANS POWER MOSFET IRPF360LC 4K360
Q15 TRANS POWER MOSFET IRPF360LC 4K360
Q16 TRANS POWER MOSFET IRPF360LC 4K360
Q17 TRANS LF SS N SM BC849B 4A849B
Q18 TRANS LF SS N SM BC849B 4A849B
Q19 TRANS LF SS N SM BC849B 4A849B
Q20 TRANS LF SS N SM BC849B 4A849B
Q21 TRANS LF SS N SM BC849B 4A849B
Q22 TRANS LF SS N SM BC849B 4A849B
Q23 TRANS LF SS N SM BC849B 4A849B
Q24 TRANS LF SS N SM BC849B 4A849B
Q25 TRANS LF SS N SM BC849B 4A849B
Q26 TRANS LF SS N SM BC849B 4A849B
Q27 TRANS LF SS N SM BC849B 4A849B
Q28 TRANS LF SS N SM BC849B 4A849B
Q29 TRANS LF SS N SM BC849B 4A849B
Q30 TRANS LF SS N SM BC849B 4A849B
Q31 TRANS LF SS N SM BC849B 4A849B
Q32 TRANS LF SS N 2SC2547 4A2546
Q33 TRANS LF SS P 2SA1085 4A1085
Q34 TRANS LF SS N SM BC849B 4A849B
Q35 TRANS LF SS N 2SC2547 4A2546
Q36 TRANS LF SS P 2SA1085 4A1085
Q37 TRANS LF SS N SM BC849B 4A849B
Q38 TRANS LF SS P 2SA1085 4A1085
Q39 TRANS LF SS N SM BC849B 4A849B
Q40 TRANS LF SS N 2SC2547 4A2546
Q41 TRANS LF SS N 2SC2547 4A2546
Q42 TRANS LF SS N SM BC847B 4A847
Q43 TRANS LF SS N 2SC2547 4A2546
Q44 TRANS LF SS N 2SC2547 4A2546
Q45 TRANS LF SS N 2SC2547 4A2546
Q46 TRANS LF SS N 2SC2547 4A2546
Q47 TRANS LF SS N 2SC2547 4A2546
Q48 TRANS LF SS P SM BC856B 4A856B
Q49 TRANS LF SS P SM BC856B 4A856B
Q50 TRANS LF SS P SM BC856B 4A856B
Q51 TRANS LF SS P SM BC856B 4A856B
Q52 TRANS LF SS P SM BC859B 4A859B
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Q53 TRANS LF SS P SM BC859B 4A859B
Q54 TRANS LF SS P SM BC859B 4A859B
Q55 TRANS LF SS P SM BC859B 4A859B
Q56 TRANS LF SS P SM BC859B 4A859B
Q57 TRANS LF SS P SM BC859B 4A859B
Q58 TRANS LF SS P SM BC859B 4A859B
Q59 TRANS LF SS N SM BC849B 4A849B
Q60 TRANS LF SS P SM BC859B 4A859B
Q61 TRANS LF SS N SM BC849B 4A849B
Q62 TRANS LF SS N SM BC849B 4A849B
R1 RES MF FU W3 1R0 5% NFR25 1G810
R2 RES MF FU W3 1R0 5% NFR25 1G810
R3 RES MF FU W3 1R0 5% NFR25 1G810
R4 RES CF 1W 330R 5% 1E133
R5 RES CF 1W 330R 5% 1E133
R6 RES CF W2 100R 5% 1D110
R7 RES MF FU W3 470R 5% NFR25 1G147
R8 RES MF FU W3 470R 5% NFR25 1G147
R9 RES MF FU W3 220R 5% NFR25 1G122
R10 RES MF FU W3 220R 5% NFR25 1G122
R11 RES MF FU W3 1K0 5% NFR25 1G210
R12 RES MF FU W3 470R 5% NFR25 1G147
R13 RES MF FU W3 470R 5% NFR25 1G147
R14 RES MF FU W3 220R 5% NFR25 1G122
R15 RES MF FU W3 220R 5% NFR25 1G122
R16 RES MF FU W3 1K0 5% NFR25 1G210
R17 RES MF FU W3 470R 5% NFR25 1G147
R18 RES MF FU W3 470R 5% NFR25 1G147
R19 RES MF FU W3 1K0 5% NFR25 1G210
R20 RES MF FU W3 1K0 5% NFR25 1G210
R21 RES MF FU W3 1K0 5% NFR25 1G210
R22 RESISTOR SM W8 220R 1% 1A122A
R23 RESISTOR SM W8 220R 1% 1A122A
R24 RESISTOR SM W8 2K4 1% 1A224A
R25 RESISTOR SM W8 2K4 1% 1A224A
R26 RESISTOR SM W4 22K 2% 1A322
R27 RESISTOR SM W4 22K 2% 1A322
R28 RESISTOR SM W4 10K 2% 1A310
R29 RESISTOR SM W4 1K5 2% 1A215
R30 RESISTOR SM W4 120K 2% 1A412
R31 RESISTOR SM W4 120K 2% 1A412
R32 RESISTOR SM W4 100K 2% 1A410
R33 RESISTOR SM W4 12K 2% 1A312
R34 RESISTOR SM W4 11K 2% 1A311
R35P RESISTOR SM W4 0R0 2% 1A000
R35 RESISTOR SM W4 1K0 2% 1A210
R36 RESISTOR SM W4 47K 2% 1A347
R37 RESISTOR SM W4 22K 2% 1A322
R38 RESISTOR SM W4 47K 2% 1A347
R39 RESISTOR SM W4 47K 2% 1A347
R40 RESISTOR SM W4 22K 2% 1A322
R41 RESISTOR SM W4 47K 2% 1A347
R42 RESISTOR SM W4 47K 2% 1A347
R43 RESISTOR SM W4 47K 2% 1A347
R44 RESISTOR SM W4 47K 2% 1A347
R45 RESISTOR SM W4 47K 2% 1A347
R46 RESISTOR SM W4 47K 2% 1A347
R47 RESISTOR SM W4 68K 2% 1A368
R48 RESISTOR SM W4 180R 2% 1A118
R49 RES CF W2 100R 5% 1D110
R50 RES MF FU W3 100R 5% NFR25 1G110
R51 RES MF FU W3 10R 5% NFR25 1G010
R52 RES MF FU W3 10R 5% NFR25 1G010
R53 RES CF 2W 220R 5% 1C122
R54 RES MF FU W3 100R 5% NFR25 1G110
R55 RES MF FU W3 10R 5% NFR25 1G010
R56 RES MF FU W3 10R 5% NFR25 1G010
R57 RES CF 2W 220R 5% 1C122
R58 RESISTOR SM W4 47R 2% 1A047
R59 RESISTOR SM W4 1M0 2% 1A510
R60 RESISTOR SM W4 1M0 2% 1A510
R61 RESISTOR SM W4 2M2 2% 1A522
R62 RESISTOR SM W4 1M0 2% 1A510
R63 RESISTOR SM W4 1M0 2% 1A510
R64 RESISTOR SM W4 2M2 2% 1A522
R65 RESISTOR SM W4 220R 2% 1A122
R65P RESISTOR SM W4 0R0 2% 1A000
R66 RESISTOR SM W4 47R 2% 1A047
R67 RESISTOR SM W4 47R 2% 1A047
R68 RESISTOR SM W4 10K 2% 1A310
R69 RESISTOR SM W4 10K 2% 1A310
R70 RESISTOR SM W4 10K 2% 1A310
R71 RESISTOR SM W4 4K7 2% 1A247
R72 RESISTOR SM W4 100R 2% 1A110
R73 RESISTOR SM W4 100R 2% 1A110
R74 RESISTOR SM W4 100R 2% 1A110
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
8
R75 RESISTOR SM W4 1K0 2% 1A210
R76 RESISTOR SM W4 100R 2% 1A110
R77 RESISTOR SM W4 100R 2% 1A110
R78 RESISTOR SM W4 100R 2% 1A110
R79 RESISTOR SM W4 1K0 2% 1A210
R80P RESISTOR SM W4 0R0 2% 1A000
R80 RESISTOR SM W4 10K 2% 1A310
R81 RESISTOR SM W4 180R 2% 1A118
R82 RESISTOR SM W4 180R 2% 1A118
R83P RESISTOR SM W4 0R0 2% 1A000
R83 RESISTOR SM W4 100R 2% 1A110
R84 RES MO 3W 5% 0R22 KOASPR3 1Q922
R85 RES MO 3W 5% 0R22 KOASPR3 1Q922
R86 RES MO 3W 5% 0R22 KOASPR3 1Q922
R87 RES MO 3W 5% 0R22 KOASPR3 1Q922
R88 RES MO 3W 5% 0R22 KOASPR3 1Q922
R89 RES MO 3W 5% 0R22 KOASPR3 1Q922
R90 RES MO 3W 5% 0R22 KOASPR3 1Q922
R91 RES MO 3W 5% 0R22 KOASPR3 1Q922
R92 RESISTOR SM W4 47R 2% 1A047
R93 RESISTOR SM W4 47R 2% 1A047
R94 RESISTOR SM W4 150R 2% 1A115
R95 RESISTOR SM W4 47R 2% 1A047
R96 RESISTOR SM W4 47R 2% 1A047
R97 RESISTOR SM W4 150R 2% 1A115
R98 RESISTOR SM W4 27K 2% 1A327
R99 RESISTOR SM W4 470R 2% 1A147
R100 RESISTOR SM W4 4K7 2% 1A247
R101 RESISTOR SM W4 470R 2% 1A147
R102 RESISTOR SM W4 68K 2% 1A368
R103 RESISTOR SM W4 68K 2% 1A368
R104 RESISTOR SM W4 120K 2% 1A412
R105 RESISTOR SM W4 68K 2% 1A368
R106 RESISTOR SM W4 68K 2% 1A368
R107 RESISTOR SM W4 120K 2% 1A412
R108 RESISTOR SM W4 1K2 2% 1A212
R109 RESISTOR SM W4 1K2 2% 1A212
R110 RES CF 1W 1R5 5% 1E815
R111 RES CF 1W 1R5 5% 1E815
R112 RES CF 1W 5R6 5% 1E856
R113 RES CF 1W 5R6 5% 1E856
R114 RESISTOR SM W4 47R 2% 1A047
R115 RESISTOR SM W4 1K5 2% 1A215
R116 RESISTOR SM W4 10K 2% 1A310
R117 RESISTOR SM W4 1K5 2% 1A215
R118 RESISTOR SM W4 33K 2% 1A333
R119 RESISTOR SM W4 33K 2% 1A333
R120 RESISTOR SM W4 33K 2% 1A333
R121 RESISTOR SM W4 33K 2% 1A333
R122 RESISTOR SM W4 33K 2% 1A333
R123 RESISTOR SM W4 33K 2% 1A333
R124 RESISTOR SM W4 33K 2% 1A333
R125 RESISTOR SM W4 33K 2% 1A333
R126 RESISTOR SM W4 33K 2% 1A333
R127 RESISTOR SM W4 33K 2% 1A333
R128 RESISTOR SM W4 22K 2% 1A322
R129 RESISTOR SM W4 220R 2% 1A122
R130 RESISTOR SM W4 220R 2% 1A122
R131 RESISTOR SM W4 220R 2% 1A122
R132 RESISTOR SM W4 220R 2% 1A122
R133 RESISTOR SM W4 220R 2% 1A122
R134 RESISTOR SM W4 220R 2% 1A122
R135 RESISTOR SM W4 220R 2% 1A122
R136 RESISTOR SM W4 220R 2% 1A122
R137 RESISTOR SM W4 100K 2% 1A410
R138 RES MF FU W3 220R 5% NFR25 1G122
R139 RES MF FU W3 100R 5% NFR25 1G110
R140 RES MF FU W3 100R 5% NFR25 1G110
R141 RES MF FU W3 220R 5% NFR25 1G122
R142 RESISTOR SM W4 4K7 2% 1A247
R143 RES MF FU W3 220R 5% NFR25 1G122
R144 RES MF FU W3 100R 5% NFR25 1G110
R145 RES MF FU W3 100R 5% NFR25 1G110
R146 RES MF FU W3 220R 5% NFR25 1G122
R147 RESISTOR SM W4 470R 2% 1A147
R148 RES MF FU W3 1K0 5% NFR25 1G210
R149 RES MF FU W3 1K0 5% NFR25 1G210
R150 RES MF FU W3 470R 5% NFR25 1G147
R151 RES MF FU W3 1K0 5% NFR25 1G210
R152 RES MF FU W3 1K0 5% NFR25 1G210
R153 RES MF FU W3 470R 5% NFR25 1G147
R154 RESISTOR SM W4 2K2 2% 1A222
R155 RESISTOR SM W4 2K2 2% 1A222
R156 RESISTOR SM W4 2K2 2% 1A222
R157 RESISTOR SM W4 2K2 2% 1A222
R158 RESISTOR SM W4 1K5 2% 1A215
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
9
R159 RESISTOR SM W4 1K5 2% 1A215
R160 RESISTOR SM W4 100R 2% 1A110
R161 RESISTOR SM W4 100R 2% 1A110
R162 RESISTOR SM W4 100R 2% 1A110
R163 RESISTOR SM W4 100R 2% 1A110
R164 RESISTOR SM W8 560R 1% 1A156A
R165 RESISTOR SM W8 560R 1% 1A156A
R166 RESISTOR SM W4 2K2 2% 1A222
R167 RESISTOR SM W4 2K2 2% 1A222
R168 RESISTOR SM W4 220R 2% 1A122
R169 RESISTOR SM W4 220R 2% 1A122
R170 RES MF W4 22K 1% 1H322
R171 RES MF W4 22K 1% 1H322
R172 RESISTOR SM W4 10R 2% 1A010
R173 RESISTOR SM W4 470R 2% 1A147
R174 RESISTOR SM W4 10R 2% 1A010
R175 RESISTOR SM W4 4K7 2% 1A247
R176 RESISTOR SM W4 470K 2% 1A447
R177 RESISTOR SM W4 470K 2% 1A447
R178 RESISTOR SM W4 470K 2% 1A447
R179 RESISTOR SM W4 470K 2% 1A447
R180 RESISTOR SM W8 47K 1% 1A347A
R181 RESISTOR SM W8 47K 1% 1A347A
R182 RESISTOR SM W8 2K7 1% 1A227A
R183 RESISTOR SM W8 2K7 1% 1A227A
R184 RESISTOR SM W4 100K 2% 1A410
R185 RESISTOR SM W4 100K 2% 1A410
R186 RESISTOR SM W4 120K 2% 1A412
R187 RESISTOR SM W8 8K2 1% 1A282A
R188 RESISTOR SM W8 8K2 1% 1A282A
R189 RESISTOR SM W4 27K 2% 1A327
R190 RESISTOR SM W4 1M0 2% 1A510
R191 RESISTOR SM W4 27K 2% 1A327
R192 RESISTOR SM W4 470K 2% 1A447
R193 RESISTOR SM W4 22R 2% 1A022
R194 RESISTOR SM W4 22R 2% 1A022
R195 RESISTOR SM W4 22R 2% 1A022
R196 RESISTOR SM W4 22R 2% 1A022
R197 RESISTOR SM W4 100K 2% 1A410
R198 RESISTOR SM W4 4K7 2% 1A247
R199 RES MF FU W3 1R0 5% NFR25 1G810
R200 RES CF 1W 2K7 5% 1E227
R201 RESISTOR SM W4 22K 2% 1A322
R202 RESISTOR SM W4 100K 2% 1A410
R203 RESISTOR SM W4 2K4 2% 1A224
R204 RESISTOR SM W4 10K 2% 1A310
R205 RES CF 1W 5% 6K8 1E268
R206 RESISTOR SM W4 100K 2% 1A410
R207 RESISTOR SM W4 100K 2% 1A410
R208 RESISTOR SM W4 470R 2% 1A147
R209 RESISTOR SM W4 4K7 2% 1A247
R210 RESISTOR SM W4 1K5 2% 1A215
R211 RESISTOR SM W4 4K7 2% 1A247
R212 RESISTOR SM W4 1K5 2% 1A215
R213 RESISTOR SM W4 47R 2% 1A047
R214 RESISTOR SM W4 4K7 2% 1A247
R215 RESISTOR SM W4 4K7 2% 1A247
R216 RESISTOR SM W4 1K0 2% 1A210
R217 RESISTOR SM W4 10K 2% 1A310
R218P RESISTOR SM W4 220R 2% 1A122
R218 RESISTOR SM W4 120K 2% 1A412
R219 RESISTOR SM W4 10K 2% 1A310
R220 RESISTOR SM W4 100K 2% 1A410
R221 RES CF 1W 470R 5% 1E147
R222 RESISTOR SM W4 100K 2% 1A410
R223 RESISTOR SM W4 10K 2% 1A310
R224 RES MF FU W3 10R 5% NFR25 1G010
R225 RESISTOR SM W4 10K 2% 1A310
R226 RESISTOR SM W4 10K 2% 1A310
R227 RES MF W4 10R 1% 1H010
R228 RES CF 1W 2K7 5% 1E227
R229 RES CF 1W 2K7 5% 1E227
R230 RESISTOR SM W4 47K 2% 1A347
R231 RESISTOR SM W4 47K 2% 1A347
R232 RESISTOR SM W4 1K0 2% 1A210
R233 RESISTOR SM W4 3K3 2% 1A233
R234 RESISTOR SM W4 3K3 2% 1A233
R235 RESISTOR SM W4 100K 2% 1A410
R236 RESISTOR SM W4 10K 2% 1A310
R237 RESISTOR SM W4 1K5 2% 1A215
R238 RESISTOR SM W4 1K8 2% 1A218
R239 RESISTOR SM W4 1K8 2% 1A218
RLY1 RLY SPST 24V SPKR A213
RLY2 RLY SPST 24V SPKR A213
RLY3 RLY SPST 24V SPKR A213
RLY4 RLY SPST 24V SPKR A213
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
10
RLY6 RELAY MAINS 24V 10A A212
RLY7 RELAY MAINS DPDT 12V 5A A211
SH1 MAINS EMC SHIELD E5402
SH2 PHONO EMC SHIELD E808MC
SK1 PHONO SKT 4-WAY EMC GOLD 8D225
SK2 CAMCON BINDING POST 4WAY GOLD 8D417G
SK3 CAMCON BINDING POST 4WAY GOLD 8D417G
SK4 IEC MAINS CONN PCB INS PX 8A001
SK5 STEREO JACK PCB 8D301
SK6 22-WAY FFC CONN 8K8022
SK7 CAGE CLAMP 16A 3 WAY 8Q001
SK8 CAGE CLAMP 16A 4 WAY 8Q002
SK9 CAGE CLAMP 16A 1 WAY ARC003-236 8Q003
SK10 MIN JACK DUAL 3.5mm HSJ1002-01-1020 8D302
SKT1 JST 6 WAY HEADER 8K709
SW2 SW PUSH 2PCO A1008
SW3 SW PUSH 2PCO A1008
SW4 SW PUSH 2PCO A1008
SW5 SW PUSH 2PCO A1008
TH2 THERMISTOR MAINS SURGE 1T004
TH3 THERMISTOR MAINS SURGE 1T004
TX1 ALPHA10 AMP POWER TX 230V L831TX
TX2 ALPHA 10 AMP 230V/115V TRANSFORMER L825TX
X1 CER RESON 4.00MHz 7W005
Y1 TX WIRE RESTRAINT F185
Y2 TX WIRE RESTRAINT F185
Z1 IC VREG POS LM317T 5D317T
Z2 IC VREG POS LM337T 5D337
Z3 IC AUDIO SM DUAL TL072 5B072D
Z4 IC AUDIO SM DUAL TL072 5B072D
Z5 IC COMPARITOR TA7317P 5M7317
Z6 IC VREG POS 7805 5D7805
Z7 IC VREG POS 7808 5D7808
Z8 IC COMPARITOR SM DUAL LM393A 5M393AD
Z9 IC SOCKET 28 NARROW 8S028N
Z9 IC CMOS MICRO HT48R30 28-DIP-B-0 5B483028
Z10 IC THERMOSTAT SM LM56CIM 5M56
Z11 IC THERMOSTAT SM LM56CIM 5M56
Z12 IC CMOS EPROM 24C02 SM 5G2402
Z13 IC COMPARITOR SM DUAL LM393A 5M393AD
ALPHA 10 PREAMPLIFIER BOARD PARTS LIST
Ref No. Description Part No.
C1 ELST NON POLAR 10UF 35V 2U610
C2 ELST 22U 63V 2N622
C3 ELST NON POLAR 10UF 35V 2U610
C4 ELST 22U 63V 2N622
C8 MLC 1N0 50V X7R 10% SM 2C210
C9 MLC 1N0 50V X7R 10% SM 2C210
C10 PPRO 680P 5% 63V RA 2D168
C11 PPRO 680P 5% 63V RA 2D168
C13 MLC 47P 100V NPO 5% SM 2C047
C14 MLC 47P 100V NPO 5% SM 2C047
C15 MLC 47P 100V NPO 5% SM 2C047
C16 MLC 47P 100V NPO 5% SM 2C047
C17 MLC 47P 100V NPO 5% SM 2C047
C18 MLC 47P 100V NPO 5% SM 2C047
C19 MLC 47P 100V NPO 5% SM 2C047
C20 MLC 47P 100V NPO 5% SM 2C047
C21 MLC 47P 100V NPO 5% SM 2C047
C22 MLC 47P 100V NPO 5% SM 2C047
C23 MLC 47P 100V NPO 5% SM 2C047
C24 MLC 47P 100V NPO 5% SM 2C047
C25 MLC 47P 100V NPO 5% SM 2C047
C26 MLC 47P 100V NPO 5% SM 2C047
C31 ELST 22U 63V 2N622
C32 ELST 22U 63V 2N622
C33 MLC 1N0 50V X7R 10% SM 2C210
C34 MLC 1N0 50V X7R 10% SM 2C210
C35 MLC 1N0 50V X7R 10% SM 2C210
C36 MLC 1N0 50V X7R 10% SM 2C210
C37 MLC 1N0 50V X7R 10% SM 2C210
C38 MLC 1N0 50V X7R 10% SM 2C210
D1 ZENER 6V8 400MW 3C06804
D2 ZENER 6V8 400MW 3C06804
LK1 JUMPER 8-WAY LEAD FOR A10 PRE-AMP L823CA
LK2 JUMPER 8-WAY LEAD FOR A10 PRE-AMP L832CA
PCB PRINTED CIRCUIT BOARD L832PB
PL6 16 WAY DIL PIN HEADER 8K6316
R1 RESISTOR SM W4 1K0 2% 1A210
R2 RESISTOR SM W4 1K0 2% 1A210
R3 RESISTOR SM W4 56R 2% 1A056
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
11
R4 RESISTOR SM W4 56R 2% 1A056
R5 RESISTOR SM W4 1K8 2% 1A218
R6 RESISTOR SM W4 100K 2% 1A410
R7 RESISTOR SM W4 100K 2% 1A410
R14 RESISTOR SM W4 10K 2% 1A310
R17 RESISTOR SM W4 1K0 2% 1A210
R18 RESISTOR SM W4 1K0 2% 1A210
R19 RESISTOR SM W4 1K0 2% 1A210
R20 RESISTOR SM W4 1K0 2% 1A210
R21 RESISTOR SM W4 1K0 2% 1A210
R22 RESISTOR SM W4 1K0 2% 1A210
R23 RESISTOR SM W4 1K0 2% 1A210
R24 RESISTOR SM W4 1K0 2% 1A210
R25 RESISTOR SM W4 1K0 2% 1A210
R26 RESISTOR SM W4 1K0 2% 1A210
R27 RESISTOR SM W4 1K0 2% 1A210
R28 RESISTOR SM W4 1K0 2% 1A210
R29 RESISTOR SM W4 1K0 2% 1A210
R30 RESISTOR SM W4 1K0 2% 1A210
R31 RESISTOR SM W4 1K0 2% 1A210
R32 RESISTOR SM W4 1K0 2% 1A210
R33 RESISTOR SM W4 1K0 2% 1A210
R34 RESISTOR SM W4 1K0 2% 1A210
R38 RESISTOR SM W4 100K 2% 1A410
R39 RESISTOR SM W4 100K 2% 1A410
R40 RESISTOR SM W4 100K 2% 1A410
R41 RESISTOR SM W4 100K 2% 1A410
R44 RESISTOR SM W4 22K 2% 1A322
R45 RESISTOR SM W4 22K 2% 1A322
R46 RESISTOR SM W4 22K 2% 1A322
R47 RESISTOR SM W4 22K 2% 1A322
R48 RESISTOR SM W4 22K 2% 1A322
R49 RESISTOR SM W4 22K 2% 1A322
R50 RESISTOR SM W4 22K 2% 1A322
R51 RESISTOR SM W4 22K 2% 1A322
R52 RESISTOR SM W4 22K 2% 1A322
R53 RESISTOR SM W4 22K 2% 1A322
R54 RESISTOR SM W4 22K 2% 1A322
R55 RESISTOR SM W4 22K 2% 1A322
R56 RESISTOR SM W4 22K 2% 1A322
R57 RESISTOR SM W4 22K 2% 1A322
R58 RESISTOR SM W4 47R 2% 1A047
R59 RESISTOR SM W4 47R 2% 1A047
R60 RESISTOR SM W4 47R 2% 1A047
R61 RESISTOR SM W4 47R 2% 1A047
R62 RESISTOR SM W4 47R 2% 1A047
R63 RESISTOR SM W4 47R 2% 1A047
R64 RESISTOR SM W8 1K5 1% 1A215A
R65 RESISTOR SM W8 1K5 1% 1A215A
R66 RESISTOR SM W8 6K8 1% 1A268A
R67 RESISTOR SM W8 6K8 1% 1A268A
R68 RESISTOR SM W4 100K 2% 1A410
R69 RESISTOR SM W4 100K 2% 1A410
R70 RESISTOR SM W4 100K 2% 1A410
R71 RESISTOR SM W4 100K 2% 1A410
R72 RESISTOR SM W4 100K 2% 1A410
R73 RESISTOR SM W4 100K 2% 1A410
R74 RESISTOR SM W4 100K 2% 1A410
R75 RESISTOR SM W4 100K 2% 1A410
R76 RESISTOR SM W4 100K 2% 1A410
R77 RESISTOR SM W4 100R 2% 1A110
R80 RESISTOR SM W4 22K 2% 1A322
R81 RESISTOR SM W4 22K 2% 1A322
SK1 PHONO SKT 4-WAY EMC GOLD 8D225
SK2 PHONO SKT 4-WAY EMC GOLD 8D225
SK3 PHONO SKT 4-WAY EMC GOLD 8D225
SK4 PHONO SKT 4-WAY EMC GOLD 8D225
SK5 PHONO SKT 2-WAY EMC GOLD 8D226
SK7 22-WAY FFC CONN 8K8022
SK8 32-WAY FFC CONN VERT 8K8032
Z3 IC OPAMP DUAL SM OPA2134PA 5B2134
Z4 IC OPAMP DUAL SM OPA2134PA 5B2134
Z6 IC HCMOS SM MAX 4051 5K4051M
Z7 IC HCMOS SM MAX 4051 5K4051M
Z8 IC HCMOS SM MAX 4051 5K4051M
Z9 IC HCMOS SM MAX 4051 5K4051M
Z10 IC HCMOS SM MAX 4051 5K4051M
Z11 IC HCMOS SM MAX 4051 5K4051M
Z12 IC AUDIO SM DUAL TL072 5B072D
Z13 IC AUDIO SM DUAL TL072 5B072D
Z14 IC AUDIO DUAL VOLPOT LM1972 5C1972
ALPHA 10 DISPLAY BOARD PARTS LIST
ALPHA 10/10P SERVICE MANUALALPHA 10/10P SERVICE MANUAL
12
Ref No. Description Part No.
C1 CERD 100N 63V 20% RA 2A410
C2 ELST 470U 25V RA 2N747
C3 CERD 100N 63V 20% RA 2A410
C4 CERD 100N 63V 20% RA 2A410
C5 CERD 100N 63V 20% RA 2A410
C6 ELST 220U 16V 2N722
C8 CERD 100N 63V 20% RA 2A410
D1 SSDIODE 1N4148 75V 3A4148
D2 SSDIODE 1N4148 75V 3A4148
D3 SSDIODE 1N4148 75V 3A4148
D4 SSDIODE 1N4148 75V 3A4148
D5 SSDIODE 1N4148 75V 3A4148
D6 SSDIODE 1N4148 75V 3A4148
D7 SSDIODE 1N4148 75V 3A4148
D8 SSDIODE 1N4148 75V 3A4148
D9 SSDIODE 1N4148 75V 3A4148
D10 SSDIODE 1N4148 75V 3A4148
D11 SSDIODE 1N4148 75V 3A4148
L831PB PRINTED CIRCUIT BOARD L831PB
LED1 LED GREEN 5MM 3D001
LED2 LED GREEN 5MM 3D001
LED3 LED GREEN 5MM 3D001
LED4 LED GREEN 5MM 3D001
LED5 LED GREEN 5MM 3D001
LED6 LED GREEN 5MM 3D001
LED7 LED GREEN 5MM 3D001
LED100 LED RED/GREEN 5MM 3D002
LK1 LINK PLAIN 10mm 1X010A
LK3 JUMPER 3 WAY x 125mm L815CA
M1 NORITAKE ITRON CU20025RCPB-U1J B1010
Q1 TRANS LF SS P BC557B 4A557
Q2 TRANS MOSFET SW ZVNL120A 4K120
R1 RES MF FU W3 3R3R 5% NFR25 1G833
R2 RES MF W4 150R 1% 1H115
R3 RES MF W4 150R 1% 1H115
R4 RES MF W4 150R 1% 1H115
R5 RES MF W4 150R 1% 1H115
R6 RES MF W4 150R 1% 1H115
R7 RES MF W4 150R 1% 1H115
R8 RES MF W4 150R 1% 1H115
R9 RES MF W4 4K7 1% 1H247
R10 RES MF W4 4K7 1% 1H247
R11 RES MF W4 10K 1% 1H310
R12 RES MF W4 10K 1% 1H310
R13 RES MF W4 150R 1% 1H115
R14 RES MF W4 330R 1% 1H133
R15 RES MF W4 4K7 1% 1H247
R16 RES MF W4 4K7 1% 1H247
R17 RES MF W4 10K 1% 1H310
R18 RES MF W4 100R 1% 1H110
R19 RES MF W4 100R 1% 1H110
R20 RES MF W4 100K 1% 1H410
R21 RES MF W4 100R 1% 1H110
R22 RES MF W4 100K 1% 1H410
RP1 RES NETWORK 100Kx8 COMMON 1V410
RX1 REMOTE CONTROL RECEIVER SBX1610-62 38KHZ B2103
SK1 22-WAY FFC CONN HORIZ 8K8122
SK2 22-WAY FFC CONN HORIZ 8K8122
SK3 EC16B2414 A1211
SW1 TACT SWITCH 2-PIN LOW PROF A1504
SW2 TACT SWITCH 2-PIN LOW PROF A1504
SW3 TACT SWITCH 2-PIN LOW PROF A1504
SW4 TACT SWITCH 2-PIN LOW PROF A1504
SW5 TACT SWITCH 2-PIN LOW PROF A1504
SW6 TACT SWITCH 2-PIN LOW PROF A1504
SW7 TACT SWITCH 2-PIN LOW PROF A1504
SW8 TACT SWITCH 2-PIN LOW PROF A1504
SW9 TACT SWITCH 2-PIN LOW PROF A1504
SW10 TACT SWITCH 2-PIN LOW PROF A1504
SW11 TACT SWITCH 2-PIN LOW PROF A1504
X1 CER RESON 4.00MHz 7W005
Z1 IC VREG POS 7805 5D7805
Z2 40 PIN IC SOCKET 8S040
Z2 IC CMOS MICRO PIC16C65 5H16C65
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\L829ct1_6.prj
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Alpha 10 Amp Main
Circuit Diagram
L829CT1SJB10-Jul-1998
INITIALSDate Printed 1 5Sheet of
Notes:
D1
15V 400MW
R1
1R0
FU
R7
470R
FU
D3
10V
400
MW
+
C1
100U
EL
100
VVinI
AD
JA
Vout O
Z1LM317T
R22
220R
SM
1%
R24
2K4
SM1%
+
C6
22U
EL
+15V
+
C7
10U
EL
+15V Regulator
D2
15V 400MW
R2
1R0
FU
R8
470R
FU
D4
10V
400
MW
+
C2
100U
EL
100
V
R23
220R
SM
1%
R25
2K4
SM1%
+
C8
22U
EL +
C9
10U
EL
VinI AD
JA
Vout O
Z2LM337T
-15V Regulator
-15V
D14
1N40
03F
D15
1N40
03F
-SUP
+SUP
C20
4N7
PP
C21
4N7
PP
PAN
1
AT
E_P
AD
NA
N1
AT
E_P
AD
PPR
E1
AT
E_P
AD
NPR
E1
AT
E_P
AD
NSUP1
ATE_PAD
PSUP1
ATE_PAD
PGND1
ATE_PAD
HS
HS1ATO220HS13REG
HS3A
TO220HS23REG
Q12SC5248
Q42SA1964
HS6NTO220HS23TR
R3
1R0
FU
RLY1ARLY SPST SPKR
RLY2ARLY SPST SPKR
RLY5NA
RLY 51SB12T
RLY5NB
RLY 51SB12T
Output
VI Latch VI Cut
ABiasRefInput
PWRAMPLl829ct3_6.SCH
Output
VI Latch VI Cut
ABiasRefInput
PWRAMPRl829ct4_6.SCH
R26
22K SM
R36
47K
SM +
C22
10U
EL
RLY3A
RLY SPST SPKR
RLY4ARLY SPST SPKR
R47
68K SM
R48
180R SM
ABSUP
-SUP
VI Cut-out latch
VIRESET1
ATE_PAD
SGND1
ATE_PAD
EM
C
1
N
F
SK1A
PHO
NO
4G
N
F
SK1BPH
ON
O4GL&R Inputs
R27
22K
SM
LOut
ROut
84
Z3CTL072 SM
84
Z4CTL072 SM
+15V
C38680P PP
C39680P PP
123
SW1NA2PCO_VERT
456
SW1NB2PCO_VERT
Pre_OutputsTop+
Top-
SK2ACAMCON_G
Bot+
Bot-
SK2BCAMCON_G
CHASS
SK2CCAMCON_G
Top+
Top-
SK3A
CA
MC
ON
_G
Bot+
Bot-
SK3B
CA
MC
ON
_G
CHASS
SK3CCAMCON_G
C29
470P
SM
C30
470P
SM
C40
10N
SM
C41
10N
SM
C42
10N
SM
C43
10N
SM
SPKB1
ATE_PAD
SPKA1ATE_PAD
SPKB2ATE_PAD
SPKA2ATE_PAD
PRE1ATE_PAD
PRE2ATE_PAD
HS8NTO220HS23TR
+PRE
-PRE
LVProtRVProt
ACDetFault
Powerup
FAN
RESET
CONTROLl829ct2_6.SCH
VinI
GN
DG
Vout O
Z67805
C31
100N
SM
+
C10
10U
EL
+5VControl Supply
L
N
E
NE
L
SK4
IEC3
C44
4N7 MAINS
RLY6A
RLY SPDT 24V
D18
1N4003F
D19
1N4003F
+
C48
3M3
EL
C85
100N
SM
VinI
GN
DG
Vout O
Z77808
C86
100N
SM
C464N7 MAINS
C474N7 MAINS
+
C45
10U
EL
+8V
HS
HS2NATO220HS08REG
230V
115V
0VBLUE
GREEN
BLUE
BLACK
BROWN
ORANGE
GRN/YEL
TX1L831TX
F4
AS2A5
F5
AS4A_115V
+8V
-15V
FaultACDet
ACDet
R71
4K7
SM
Q12BC847B
+UREG
+UREG
EMC Shield
SH1
EMCMAINS
1
23456
SKT1
JST 6W HEADER
ACDet+SUP
+15V
-15V-SUP
3rd Ch. Power
Digital Supply
12345678
SK11
WTRAP2.5X8V
+15V
-15V
Pre-Amp Audio Input
Kit Masks:1) For Integrated Amp use... N, F inclusive2) For Power Amp use... P,S,F inclusive
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.
! !
!
!
!
BARCODE LABEL
BARCD
BARCODE
S.J.B.
SJB
SJB
Update Box
UPDTBX
UPDATE_BOX
Photo Strip
PS
PHOTO_STRIP
FD_1
FIDUCIAL
FD_2
FIDUCIAL
PD5TOOLING
PD7TOOLING
PD8TOOLING
Replace with sametype component only
!
LHC 2
RHC 31
4
L 5
6
R 7
SK5
HPSKT
R4
330R 1W CF
R5
330R 1W CF
R6
100R
W2
CF
R49
100R
W2
CF
LOut
ROut
D16
BA
S16
W S
M
Blue 1
Dark Grey 2
Orange 3
SK7
CAGECLAMP3
Grey 1
Light Green 2
Light Green 3
Grey 4
SK8
CA
GE
CLA
MP
4
Y1TX WIRE CLIP
HP1
HP2
R81
180R
SM
R82
180R
SM
UREG1
ATE_PAD PDIG1ATE_PAD
PMPU1
ATE_PAD
TH3
PTHMAINS
+
C32
22U
EL
+
C33
22U
EL
SCREENSCREENSCREENSCREEN
SW1NC
2PCO_VERT
Chassis Connection
FIX3
R22
8
2K7
1W C
F
R22
9
2K7
1W C
F
EMC ShieldSH2
EMCPHONO
AC1ATE_PAD
AC2ATE_PAD
TXGNDATE_PAD
TXNATE_PAD
TX115ATE_PAD
TX230ATE_PAD
LIV
EA
TE
_PA
D
NEUTRALATE_PAD
D10 6A
40
D11
6A40
D12
6A40
D13
6A40
230V
115V
12
2
5
70V
13
11
11V
0V
11V
TX2L825TX
RLY7A
RLY DPDT 12V
RLY
7BR
LY D
PD
T 1
2V
RLY
7C
RLY
DP
DT
12V
C13
4N7
MA
INS
R35P
0R0 SM
R65P
0R0 SM
R80P 0R0 SM
R83P 0R0 SM
Q42BC847B
D44
24V 3W SM
D45
1N4003F
R35
1K0 SM
Q59F2SC5248
Q39BC849B
12
SKT3
MOLEX2MV
Fan
C89
100N
SM
D46
BA
S16
W S
MD
47
BA
S16
W S
M
R23
0
47K
SM
C87
100N
SM
LOut
ROut
+UREG
R23
1
47K
SM C88
100N
SM
Fan R232
1K0 SM
Issue BoxDrilling Detail
DD1
DD_ISSUE
FIX1
FIX2
FIX4 FIX5 FIX6 FIX7
FANOUTATE_PAD
Green1SK9
CAGECLAMP1
R29
1K5
SM
D11
5VA
TE
_PA
D
D24
0VA
TE
_PA
D
ACD1ATE_PAD
ACD2ATE_PAD
R19
9
1R0
FU
!
Q7BC856B
Q60BC859B
R208
470R SM
Fault
C94
10N SM
R128
22K SM
R20
122
K S
M
+C95
10U
EL
Y2TX WIRE CLIP
+
C96
10U
EL R202
100K SMD42
BAS16W SM
+
C90
10U
EL
R21
7
10K
SM
D50
5V6
400M
WD49
BAS16W SM
R216
1K0 SM
Reset Circuit
TH2 PTHMAINS
C28470P SM
SJB
Hardware Remote RX
PCB
PCB
L829PB
C6 & C8 change from 10u to 22u
2SJB
26-9-97
22-9-9797_1085
97_1086
SJB No Change
3
22-10-9797_1096
SJB HS2N change to larger size11-11-9797_1102
4
C101
47N PE
5
6
+ C1810M EL 63V
+ C1910M EL 63V
Paper MarkerA2 Horizontal
DDH
DD_A2H
Paper MarkerA2 Vertical
DDV
DD_A2V
FR4, 2 OZ CuPCB MATERIAL
DDM
FR4_2OZ
FIX8 FIX9
Q_3
0
Q_4
7
Q_48
DetailDrilling
DDD
DRILL_DWG
Q_55
Q_56
Q_57
R224
10R MF
12
SKT2
MOLEX2MV
SJB PCB Issue 2 to 3 changes9-7-9898_1042
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\l829ct3_6.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Alpha 10 Amp L Ch.
Circuit Diagram
L829CT3SJB10-Jul-1998
INITIALSDate Printed 2 5Sheet of
Notes:
Output
VI Latch
VI Cut
Q13
IRFP360LC
Q14
IRFP360LC
R50
100R FU
R84
0R22
3W
MO
R85
0R22
3W
MO
+
C51
220U
EL
R92
47R
SM
R9
220R
FU
R86
0R22
3W
MO
R87
0R22
3W
MO
R93
47R
SM
R10
220R FU
Q17BC849B
R10
2
68K
SM
R103
68K SM
+
C23
100U
EL
R94
150R
SM
R10
8
1K2
SM
R11
1K0
FU
R104
120K SM
R37
22K SM
L1 2U2H LAC
R110
1R5 1W CF
VI Cut-out
+V
I Pro
tect
ion
-VI P
rote
ctio
n
3
21
Z8A
LM393A SM
R51
10R FU
R1125R6 2W CF#A
C55100N PC
R52
10R FU
ABiasRef
Q402SC2547
R68
10K
SM
R11
8
33K
SM
D5
10V
400
MW
R12
9
220R
SM
R13
0
220R
SM
Q22SC5248
R138
220R FUR
148
1K0
FU
R14
9
1K0
FU
C61
100P
PP
R131
220R SM
R132
220R SM
D6
10V 400MWQ52SA1964
R13
9
100R
FU
R14
0
100R
FU
R15
0
470R
FU
R15
4
2K2
SM
R15
5
2K2
SM
Q412SC2547
Q332SA1085
C63
150P PP
R12
470R
FU
R13
470R
FU
R15
8
1K5
SM
+SUP
-SUP
C56100N PC
C57
100N
PC
Q48BC856B
Q49BC856B
R16
0
100R
SM
R72
100R
SM
Q8BC846B
Q9BC846B
R73
100R
SM
R74
100R
SM
Q18BC849B
Q19BC849B
Q52BC859B
R16
1
100R
SM
+15V
R16
4
560R
SM
1%
Q20BC849B
Q21BC849B
R16
6
2K2
SM
R11
9
33K
SM
-15V
R172
10R SM
C69X
56P PS
3
21
Z3ATL072 SM
R176
470K SM
R17
7
470K
SM
C71
10U NP
R38
47K
SM
C75
47N PE
R59
1M0
SM
C64
330P
PP
R18
0
47K
SM
1%
R182
2K7 SM
C72
10U
NP
Input
ABSUP
5
67
Z3B
TL072 SM
R30
120K
SM
R18
4
100K
SM
R61
2M2 SM
Bias Level detector
Auto-Bias Servo
Voltage Servo
OUTPUT1
ATE_PAD
INPUT1
ATE_PAD
VSE
RV
O1
AT
E_P
AD
ISE
RV
O1
AT
E_P
AD
STABLE1
ATE_PAD
Bootstrap
1
2
3
SW2A2PCO
R18
7
8K2
SM1%
Gain 29dB or 28.3x
R141
220R FU
R75
1K0
SM
D31
BA
S16W
SM
R12
0
33K
SM
D21
1N4003F
R19
322
R S
M
R19
4
22R
SM
Q53BC859B
D32
BA
S16
W S
M
HS7TO220HS23TR
HS10TO220HS23TR
HS5TO247HS2.8DEGC/W
HS9
TO
247H
S2.
8DE
GC
/W
Q_3 QP
AD
Q_4
QPAD
Q_5QPAD
Q_7
QPAD
Q_8QPAD
Q_10
QPAD
Q_11QPAD
Q_12QPAD
Q_13
QPAD
Q_29
QPAD
!
!
!
!
!
!
!
!
!
!
!
!
Replace with sametype component only
!
R13
7
100K
SM
D17
BA
S16
W S
M
+
C4
100U
EL
100
VC
76
47N
PE
R53
220R
2W
CF
D39
12V
3W
SM
C79
10U NP
R17
0
22K
MF
C14
150P PP
R99
470R
SM
C37
1N0 PP
R58
47R SM
R67
47R
SM
IQ1ATE_PAD
C12
4N7
PP
+
C52
220U
EL
Q322SC2547
Q23BC849B
SJB
22-9-97
C64 change from 220P to 330P
Hardware Remote RX 2SJB
26-9-97
97_1085
97_1086
SJB R50 change from 10R to 100R
3
22-10-9797_1096
C99
10P
SM
#A
SJB R61 & 168 changed. C99 added.11-11-9797_1102
4
C1021N0 SM
R24
0
100R
SM
5
6
Q_41QPAD
R39
4K7
SM
Q22BC849B
1
3 4
6
O2 TLP181 SM
R60 1K8 SM
R115
10K SM
C104
100N SM
Q_6
Q_1
9
Q_4
3
R168 2K4 SM
C6710N SM
BSRef
Q_49
Q_5
0
Q_58 Q_59
Q_6
0
C68100P PPS SM
C106100P PPS SM
SJB PCB Issue 2 to 3 changes9-7-9898_1042
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\l829ct4_6.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Alpha 10 Amp R Ch.
Circuit Diagram
L829CT4SJB10-Jul-1998
INITIALSDate Printed 3 5Sheet of
Notes:
Output
Q15
IRFP360LC
R54
100R FU
R90
0R22
3W
MO
R91
0R22
3W
MO
R96
47R
SM
R15
220R FU
Q24BC849B
R106
68K SM
L2 2U2H LAC
R111
1R5 1W CF
-VI P
rote
ctio
n
5
67
Z8B
LM393A SM
R55
10R FU
R1135R6 2W CF#A
C58100N PC
ABiasRef
Q432SC2547
R69
10K
SM
R12
1
33K
SM
D7
10V
400
MW
R13
3
220R
SM
R13
4
220R
SM
Q32SC5248
R143
220R FUR
151
1K0
FU
R15
2
1K0
FU
C62
100P
PP
Q62SA1964
R14
4
100R
FU
R14
5
100R
FU
R15
3
470R
FU
R15
6
2K2
SM
R15
7
2K2
SM
Q442SC2547
Q362SA1085
C65
150P PP
R17
470R
FU
R18
470R
FU
R15
9
1K5
SM
+SUP
-SUP
C59100N PC
C60
100N
PC
Q50BC856B
Q51BC856B
R16
2
100R
SM
R76
100R
SM
Q10BC846B
Q11BC846B
R77
100R
SM
R78
100R
SM
Q25BC849B
Q26BC849B
Q54BC859B
R16
3
100R
SM
+15V
R16
5
560R
SM
1%
Q27BC849B
Q28BC849B
R16
7
2K2
SM
R12
2
33K
SM
-15V
R174
10R SM
C70X
56P PS
3
21
Z4ATL072 SM
R178
470K SM
R17
9
470K
SM
C73
10U NP
R41
47K
SM
C77
47N PE
R62
1M0
SM
C66
330P
PP
R18
1
47K
SM
1%
R183
2K7 SM
C74
10U
NP
Input
ABSUP
5
67
Z4B
TL072 SM
R64
2M2 SM
Bias Level detector
Auto-Bias Servo
Voltage Servo
OUTPUT2
ATE_PAD
INPUT2
ATE_PAD
VSE
RV
O2
AT
E_P
AD
ISE
RV
O2
AT
E_P
AD
STABLE2
ATE_PAD
+
C5
100U
EL
100
V
4
5
6
SW2B2PCO
R18
8
8K2
SM1%
Gain 29dB or 28.3x
R146
220R FU
R79
1K0
SM
D33
BA
S16W
SM
R12
3
33K
SM
D22
1N4003F
R19
522
R S
M
R19
6
22R
SM
Q55BC859B
D34
BA
S16
W S
M
HS13TO220HS23TR
HS14TO220HS23TR
HS12
TO
247H
S2.
8DE
GC
/W
Q_16 QP
AD
Q_17
QPAD
Q_18QPAD
Q_20
QPAD
Q_21QPAD
Q_22QPAD
Q_23
QPAD
Q_24QPAD
Q_25QPAD
Q_26
QPAD
!
!
!
!
!
!
!
!
! !
!
Replace with sametype component only
!
R19
7
100K
SM
Bootstrap
!
D26
BA
S16
W S
M
C78
47N
PE
R57
220R
2W
CF
D41
12V
3W
SM
C35
150P PP
R10
1
470R
SM
C80
10U NP
R17
1
22K
MF
C49
1N0 PP
R66
47R SM
R11
4
47R
SM
IQ2ATE_PAD
C36
4N7
PP
+
C54
220U
EL
VI Latch
VI Cut
+
C24
100U
EL
R97
150R
SM
R10
9
1K2
SM
R16
1K0
FU
R107
120K SM
R40
22K SM
VI Cut-out
!
Q352SC2547
Q16
IRFP360LC
R88
0R22
3W
MO
R89
0R22
3W
MO
+
C53
220U
EL
R95
47R
SM
R14
220R
FU
R10
5
68K
SM
+V
I Pro
tect
ion
R56
10R FU
R135
220R SM
R136
220R SM
D8
10V 400MW
HS11TO247HS2.8DEGC/W
!
Q30BC849B
SJB
22-9-97
C66 change from 220P to 330P
Hardware Remote RX 2SJB
26-9-97
97_1085
97_1086
SJB R54 chage from 10R to 100R
3
22-10-9797_1096
C10
0
10P
SM
#A
SJB R64 & 169 changed. C100 added.11-11-9797_1102
4
R24
1
100R
SM
C1031N0 SM
5
6
Q_42QPAD
R42
4K7
SM
Q29BC849B
1
3 4
6
O3 TLP181 SM
R63 1K8 SM
R117
10K SM
C105
100N SM
Q_44
Q_4
5
Q_4
6
R169 2K4 SM
BSRef
Q_51
Q_5
2
Q_61 Q_62
Q_6
3
C107100P PPS SM
C108100P PPS SM
SJB PCB Issue 2 to 3 changes9-7-9898_1042
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\l829ct2_6.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Alpha 10 Amp Power Ctrl
Circuit Diagram
L829CT2SJB10-Jul-1998
INITIALSDate Printed 4 5Sheet of
Notes:
PW
R1
IN12
IN23
0V4
V-
5
O 6
FB
7
RC
8
V+
9
Z5TA7317P
R12
4
33K
SM
R18
6
120K
SM
R12
5
33K
SM
+
C50
1U0 EL
R43
47K
SM
+
C25
100U
EL
R32
100K
SM
+
C26
100U
EL
+
C27
100U
EL
R44
47K
SM
R45
47K
SM
R12
6
33K
SM
R12
7
33K
SM
+SUP
RL
Y1B
RL
Y S
PST
SPK
R
RL
Y2B
RL
Y S
PST
SPK
R
Spe
aker
s 1
Spe
aker
s 2
Speaker/Amp Protection
D23
1N40
03F
D24
1N40
03F
Q452SC2547
Q462SC2547
R20
0
2K7
1W C
F
D35
BAS16W SM
D36
BAS16W SM
R19
1K0 FU
R201K0 FU
RLY
5NC
RLY
51S
B12
T
D25
1N40
03F
D26
N
1N40
03F
R20
1N
2K7
1W C
F
Sof
t Sta
rt
Pre
-Am
p O
ut
Q472SC2547
D37
BAS16W SM
R21 1K0 FU
12345678910111213141516171819202122
SK9N
FFC22V
-SUP
+C15
10U
EL
R46
47K
SM
D38
BA
S16
W S
M
Q56BC859B
R203
2K4 SM
Q382SA1085
R20
4
10K
SM
R205
6K8 1W CF
D43
5V6
400M
W
+
C16
10U
EL
84
Z8CLM393A SM
-SUP
ABSUPAuto-Bias supplyPower-off Auto-Bias defeat
ABSUP1
RL
Y3B
RL
Y S
PST
SPK
R
RL
Y4B
RL
Y S
PST
SPK
R
PRTSUP1
12345678910111213141516171819202122
SK6
FFC22VD9
10V 400MW
D29
4V7
400M
W
R206
100K SM
R20
7
100K
SM
X1CST4.00
C34
100N
SM +
C17
10U
EL
LVProt
RVProt
R70
10K SM
D27
1N4003F
ACDet
Fault
+5V
1
2
3
SW
3A2P
CO
4
5
6
SW
3B2P
CO
1
2
3
SW
4A2P
CO
4
5
6
SW
4B2P
CO
1
2
3
SW
5A2P
CO
4
5
6
SW
5B2P
CO
SP 1 SP 2 STANDBY
Powerup
Fault
+PRE
-PRERminRemOut
REMI1REMO1
Fault
SP2MuteNSP1MuteN
PreMuteN
Prot
SP2MuteNSP1MuteNProt
PREMTN1
SP3_PWR
SP1PROT1
FAULT1
+8V
SCK1SDA1REQ1STBYLED1STBYLED
REQSDASCK
VFault
VFault
SP2
VFAULT1
SP3_PWRTHERMX1ThermX_RST
Opt
ion
PC
B
Dis
play
PC
B
+5V
Rmin
Remote PCB
PWR Amp Control
Thermal Protection
Mains/VI Fault detection
R21
8P
220R
SM
Q58RBC859B
R225R
1K0 SMREMKILL1
ATE IR RX Disable pad
User IR RX Disable Link
RLY
6B
RLY
SP
DT
24V
123
LK10RL815CA
LED PCB1234
LK9P
L836CA
1234
LK9X
L836CA
R G
LED1PLED RED/GRN
STBY/POWER
!
LED PCB
!
Replace with sametype component only
!
!
C3
100N
SM
SP
1SW
1
SP2SW1
STBYSW1
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.
PB51
PB42
PA33
PA24
PA15
PA06
PB37
PB28
PB19
PB010
VSS11
(TMR)/INT12
PC013
PC114 PC2 15PC3 16PC4 17PC5 18RES 19VDD 20OSC1 21OSC2 22PA7 23PA6 24PA5 25PA4 26PB7 27PB6 28Z9
HT
48R
30 2
8-D
IP-B
-0
R23
5
100K
SM
VREF1
Vt22
Vt13
GND4 Vtemp 5OUT2 6OUT1 7VCC 8Z11
LM56CIM
VREF1
Vt22
Vt13
GND4 Vtemp 5OUT2 6OUT1 7VCC 8Z10
LM56CIM
R33
12K SM
R34
11K SM
R18922K SM
R19122K SM
+5V +5V
R65
220R SMPowerup
Powerup
Cutout
RFProtTherm
ProtStat
RemMute
R234 10K SMR233 10K SM
FAN
Q_1 Q_15
THTESTRATE_PAD
THTESTLATE_PAD
Q58BC859B
R11
6
10K
SM
+5V
Q59BC849B
Q_9
Q_28
Q_31
Q_32
+UREG
R14
7
470R
SM
R17
3
470R
SM
C81
22P
SM
C82
22P
SM
R10
0
4K7
SM
R14
2
4K7
SM
D20
BA
S16
W S
M
D28
BA
S16
W S
M
D30
BA
S16
W S
M
D40
BA
S16
W S
M
Lout Rout
Rout
Lout
RF Protection
R98
27K SM
R17
5
4K7
SM
D48
4V7
400M
W
+SUP
Pwrok
Power Supply Detection
A0
1A
12
A2
3
VSS4 SD
A5
SC
L6
WP
7
VDD 8
Z1224C02 SM
+5V
R190
1M0 SM
R19
2
470K
SM
+
C11
1U0
EL Q34
BC849B
Q_1
4
Q_2
7
Q_33
C84100N SM
R21
4
4K7
SM
R21
5
4K7
SM
RESET
R21
8
120K
SM
Fit Jumper to PL1 for test power-up from external d.c. supply
-SUP
R219
10K SM
Send
Break
Demod
Raw
REMOTEL829CT5_6.SCH
5
SJB
Hardware Remote RX
n.b. R33 & R34 are supposed to be different!
No Change
2SJB
26-9-97
22-9-9797_1085
97_1086
SJB No Change
3
22-10-9797_1096
SJB No Change11-11-9797_1102
4
6
Q_5
3
Q_5
4
Q_64
R31
27K
SM
R18
5
27K
SM
Pwrok
12
PL1
2WVERTJUMPER
SJB PCB Issue 2 to 3 changes9-7-9898_1042
1 2 3 4
A
B
C
D
4321
D
C
B
A
ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:DATE
FilenameECO No. DESCRIPTION OF CHANGE
J:\PROJECTS\A10amp\L829pb_Main_PCB\Circuits_&_PCB\wip\L829CT5_6.SCH
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB
Alpha 10 Amp Remote Bus
Circuit Diagram
L829CT5SJB10-Jul-1998
INITIALSDate Printed 5 5Sheet of
Notes:
Near to PCB
SK10AJACK3.5X2
Far from PCB
SK10B
JACK3.5X2
R21
0
1K5
SM
R211
4K7 SM
Remote In
Remote Out
R21
2
1K5
SM
Q57BC859B
Remote Buffer
REMJK1
REMJKO1
REMJK2
Q_2
+UREG
R221
470R 1W CF
Q61BC849B
R227
10R FU
+ C83100U EL
!
R80
10K
SM
Q31BC849B
R83
100R
SM
+5V
R28
10K SM
R19
8
4K7
SM
Q37BC849B
Q62 BC849B
R21
347
R S
M
R209
4K7 SM
+5V
Send
Break
R220
100K SM
L3 27M
H
C91
680P
PP
C92
10N
SM
R23
8
1K8
SM
R23
7
1K5
SM
R23
9
1K8
SM
R22
3
10K
SM
3
21
Z13A
LM393A SM
R22
5
10K
SM
R22
2
100K
SM
+5V
5
67
Z13B
LM393A SM
R226
10K SM
R23
6
10K
SM
+5V
Demod
Carrier Demodulator
C93
1N0
SM
84
Z13CLM393A SM
C97100N SM
+5V
Carrier Filter
Demod
Raw RemRaw
Q_34
Q_35 Q_36
Q_37
Q_38
C98
220P SM
Q_39
Q_40
SJB
Hardware Remote RX
No Change
2SJB
26-9-97
22-9-9797_1085
97_1086
SJB R210, R198, R212 change
3
22-10-9797_1096
SJB No Change11-11-9797_1102
4
5
6
Q_65
1
34
6O1
TLP181 SM
Q_66
Q_67
Q_68
SJB PCB Issue 2 to 3 changes9-7-9898_1042
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUEDRAWING NO.
23425DRAWING TITLE
DRAWN BY CHK BY DATEFilename ECO No. DESCRIPTION OF CHANGEJ:\PROJECTS\A10amp\CIRCS\display\L831ct_1.sch
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB 1 1Sheet of
ALPHA 10 AMP DISPLAY
Circuit Diagram
L831CT 1
2-Oct-1998
REQSDASCL
STBYLED
+8VVin
I
GN
DG
VoutO
Z17805
+5V
C1100N CD
R1
3R3R FU
+8V
GN
D1
VC
C2
NC
3
RS
4
R/W
(W
R)
5
E (
RD
)6
DB
07
DB
18
DB
29
DB
310
DB
411
DB
512
DB
613
DB
714
Itron VFD Module
M1ITRON_VFDM C
3
B2
A1
SK3ALPS_ENCODER
NEAR Z1, Z2
FOLD Z1 FLAT TO BOARD
PCB SILK SCREEN).
+8V+5V
GND
+5V
C5
100N CD
TAPE2_0TAPE2_1TAPE2_2
SOURCE_0SOURCE_1SOURCE_2
TAPE1_0TAPE1_1TAPE1_2
CLOCK
LOAD
DATA
VFD_D0VFD_D1VFD_D2VFD_D3
VFD_RSVFD_E
X1CST4.00
SCL SDA
R1110K MF
R1210K MF
PHASE_A
PHASE_B
+5V
PHASE_BPHASE_A
+5V
TO PREAMPTO POWER AMP
3
2
1
+5V
O/P
GND Case RX1SBX1610-52
C8100N CD
LED1
LED GREEN
LED2
LED GREEN
LED3
LED GREEN
LED4
LED GREEN
LED5
LED GREEN
LED6
LED GREEN
LED7
LED GREEN
SW1TACTSW2
SW2TACTSW2
SW3TACTSW2
SW4TACTSW2
SW5TACTSW2
SW6TACTSW2
SW7TACTSW2
SW8TACTSW2
SW9TACTSW2
SW10TACTSW2
SW11TACTSW2
D1
1N4148
D2
1N4148
D3
1N4148
D4
1N4148
R2
150R MF
R3
150R MF
R4
150R MF
R5
150R MF
R6
150R MF
R7
150R MF
R8
150R MF
ROW2
GND
GND
GND
GND
GND
GND
GND
D5
1N4148
D6
1N4148
D7
1N4148
D8
1N4148
D9
1N4148
D10
1N4148
D11
1N4148
ROW1
COL7
COL6
COL5
COL4
COL3
COL2
COL1
ROUT
ROW1ROW2
R14330R MF
R
G
LED100
LED RED/GRN
R13150R MF
STBYLED
R154K7 MF
R164K7 MF
ROW1 ROW2
RINROUT
1 2
LK110MM LINK
CUT LK1 TO DISABLE IR RECEIVER
Q1BC557B
R10
4K7 MF
RIN
123LK3
L815CA
123
LK2
L815CA
** SOCKETED **
+5V
R1710K MF
SCL
SDA
REQ
STBYLED
LOAD
DATA
CLOCK
SCL
SDA
RIN
ROUT
REQ
STBYLED
LOAD
DATA
CLOCK
TAPE1_0
TAPE1_1
TAPE1_2
TAPE2_0
TAPE2_1
TAPE2_2
SOURCE_0
SOURCE_1
SOURCE_2
TAPE1_0
TAPE1_1
TAPE1_2
TAPE2_0
TAPE2_1
TAPE2_2
SOURCE_0
SOURCE_1
SOURCE_2
MCLR1
RA02
RA13
RA24
RA35
RA4/T0CKI6
RA5/SS7
RE0/RD8
RE1/WR9
RE2/CS10
VDD11
VSS12
OSC1/CLKIN13
OSC2/CLKOUT14
RC0/T1OSI/T1CKI15
RC1/T1OSO16
RC2/CCP117
RC3/SCK/SCL18
RD0/PSP019
RD1/PSP120 RD2/PSP2 21RD3/PSP3 22RC4/SDI/SDA 23RC5/SDO 24RC6 25RC7 26RD4/PSP4 27RD5/PSP5 28RD6/PSP6 29RD7/PSP7
30VSS 31VDD 32RB0/INT 33RB1 34RB235RB3 36RB4 37RB5 38RB6 39RB740
Z2
PIC16C65
CLOCK
DATA
LOAD
TAPE1_0TAPE1_1TAPE1_2
TAPE2_0TAPE2_1TAPE2_2
SOURCE_0SOURCE_1SOURCE_2
COL7COL6COL5COL4
COL3COL2
COL1
LK1001
LINK10NPLK1002
LINK10NPLK1003
LINK10NPLK1004
LINK10NPLK1005
LINK10NPLK1006
LINK10NP
LK1007
LINK10NPLK1008
LINK10NPLK1009
LINK10NPLK1010
LINK10NP
C4100N CD
VFD_D0VFD_D1
VFD_D2VFD_D3
VFD_E
VFD_RS
LK1012
LINK10NP
LK1013
LINK10NP
LK1015
LINK10NPLK1016
LINK10NPLK1017
LINK10NPLK1018
LINK10NP
LK1019
LINK10NPLK1020
LINK10NP
PCB
L831PB
L831PB
Update Box(Small)
UDB
UPDATE_SML
DetailDrilling
DD2
DRILL_DETAIL
PD1TOOLING
PD2TOOLING
PD3TOOLING
PD4TOOLING
PD5TOOLING
PD6TOOLING
PD7TOOLING
PD8TOOLING
PD9TOOLING
PD10TOOLING
PD11TOOLING
PD12TOOLING
PD13TOOLING
PD14TOOLING
PD100TOOLING
PD101TOOLING
12345678910111213141516171819202122
SK1
FFC22H
12345678910111213141516171819202122
SK2
FFC22H
98765432
1
RP1100K X 8 COM
+5V
COL7COL6COL5COL4
COL3COL2
R9
4K7 MF
R20100K MF
REQ
R_IN
R_OUT
PHIL 15/5/97
R18
100R MF
R19
100R MF
R21
100R MF
+C2
470U EL 25V
C3100N CD
PWRLEDPWRLED
LK1011
LINK10NP
LK1014
LINK10NPLK1021
LINK10NP
+ C6220U EL
R22100K MF
Q2ZVNL120
RST
RST
LK1022
LINK10NP
BARCODE LABEL
EL1
BARCODE_A10_DISP
Issue BoxDrilling Detail
DD
DD_ISSUESML
P1
THRU_PIN
P2
THRU_PIN
P3
THRU_PIN
P4
THRU_PINP5
THRU_PIN
P6
THRU_PIN
P7
THRU_PIN
P8
THRU_PIN
P9
THRU_PIN
P10
THRU_PIN
P11
THRU_PIN
P12
THRU_PIN
P13
THRU_PIN
1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
ISSUEDRAWING NO.
23425DRAWING TITLE
DRAWN BY CHK BY DATEFilename ECO No. DESCRIPTION OF CHANGEJ:\PROJECTS\A10amp\CIRCS\PREAMP\L832ct_1.sch
A & R Cambridge Ltd.Pembroke AvenueDenny Industrial CentreWaterbeachCambridge CB5 9PB 1 1Sheet of
A10 Amp Pre-Amp PCB
Circuit Diagram
L832CT 1
2-Oct-1998
12345678
LK1L823CA
EM
C1
N
F
SK1A
PHONO4G
N
F
SK1B
PHONO4G
EM
C
1
N
F
SK2A
PHONO4G
N
F
SK2B
PHONO4G
EM
C
1
N
F
SK3A
PHONO4G
N
F
SK3B
PHONO4G
EM
C
1
N
F
SK4A
PHONO4G
N
F
SK4B
PHONO4G
EM
C
1
SK5
PHONO2G
12345678
LK2
L832CA
+15V
-15V
Pre-Amp Audio OutputPASW1
NASW1
PAN1
NAN1
3
21
Z3A
OPA2134PA SM5
67
Z3B
OPA2134PA SM
84
Z3C
OP
A21
34P
A S
M
3
21
Z4A
OPA2134PA SM
5
67
Z4BOPA2134PA SM
84
Z4C
OP
A21
34P
A S
M
AUX1R
+15V
-15V
AUX1L
L
R
Phono PCB
12345678LK1X
L823CA
PH15PPHGND1PHORPHGND2PHGND3PHOLPHGND4PH15N
R17
1K0 SM
R18
1K0 SM
R44
22K SMR45
22K SM
CDR
CDL R19
1K0 SM
R20
1K0 SM
R46
22K SMR47
22K SM
TUNERR
TUNERL R21
1K0 SM
R22
1K0 SM
R48
22K SMR49
22K SM
AVR
AVL R23
1K0 SM
R24
1K0 SM
R50
22K SMR51
22K SM
AUX2R
AUX2L R25
1K0 SM
R26
1K0 SM
R52
22K SMR53
22K SM
TAPE1IR
TAPE1IL R27
1K0 SM
R28
1K0 SM
R54
22K SMR55
22K SM
TAPE2IR
TAPE2IL R29
1K0 SM
R30
1K0 SM
R56
22K SMR57
22K SM
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
VEE7
X 3
GND8
VDD 16
Z6MAX4051 SM
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
VEE7
X3
GND8
VDD 16Z7
MAX4051 SM
Aux1L
Aux1R
CDL
CDR
TunerL
TunerR
AVL
AVR
Aux2L
Aux2R
Tape1IL
Tape1IR
Tape2IL
Tape2IR
Aux1L
Aux1R
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
VEE7
X3
GND8
VDD 16Z8
MAX4051 SM
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
VEE7
X 3
GND8
VDD 16Z9
MAX4051 SM
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
VEE7
X 3
GND8
VDD 16Z10
MAX4051 SM
X013
X114
X215
X312
X41
X55
X62
X74
INH6
A11
B10
C9
VEE7
X3
GND8
VDD 16Z11
MAX4051 SM
CDLTunerLAVLAux2L
Aux1L
Tape2ILPlugL
CDRTunerRAVRAux2R
Aux1R
Tape2IRPlugR
CDLTunerLAVLAux2L
Aux1L
Tape1IL
PlugL
CDRTunerRAVRAux2R
Aux1R
Tape1IR
PlugR
CDLTunerLAVLAux2L
Aux1L
Tape1ILTape2ILPlugL
CDRTunerRAVRAux2R
Aux1R
Tape1IRTape2IRPlugR
3
21
Z12A
TL072 SM
5
67
Z12B
TL072 SM
84
Z12CTL072 SM
3
21
Z13A
TL072 SM
5
67
Z13B
TL072 SM
84
Z13CTL072 SM
R38
100K
SM
R39
100K
SM
R40
100K
SM
R41
100K
SM
R58
47R SM
R59
47R SM
R60
47R SM
R61
47R SM
Null_R
Null_L
GND AC1
OUT12
GND13
IN14
GND AC5
GND AC6
VEE27
LOGIC GND8
CLOCK9
LOAD/SHIFT10 DATA IN 11DATA OUT 12VDD1 13GND AC 14VDD2 15GND AC 16OUT2 17VEE1 18GND2 19IN2 20
Z14
LM1972
-7V2
-7V2
-7V2
-7V2 -7V2
-7V2+6V8
+6V8
+6V8
+6V8
+6V8
+6V8
+6V8
-7V2
-7V2
R64
1K5
SM
1%
R65
1K5
SM
1%
R66
6K8 SM1%
R67
6K8 SM1%
R62
47R SM
R63
47R SM
+15V +15V
-15V -15V
+15V
-15V
+15V
-15V
TAPE1OL
TAPE1OR
TAPE2OL
TAPE2OR
123456789
10111213141516171819202122
SK7
FFC22V
R68 100K SMR69 100K SM R70 100K SMR71 100K SM R72 100K SMR73 100K SM R74 100K SMR75 100K SM R76 100K SM
TAPE1_0TAPE1_1TAPE1_2TAPE2_0TAPE2_1TAPE2_2SOURCE_0SOURCE_1SOURCE_2
Tape1_0Tape1_1Tape1_2
Tape1_0Tape1_1Tape1_2
Tape2_0Tape2_1Tape2_2
Tape2_0Tape2_1Tape2_2
Source_0Source_1Source_2
Source_0Source_1Source_2
SETOFF
R14
10K
SM
Source_0Source_1Source_2
Tape1_0Tape1_1Tape1_2
Tape2_0Tape2_1Tape2_2
R31
1K0 SM
DGND
R77
100R SMLGND
R32
1K0 SM
R33
1K0 SM
R34
1K0 SMClock
Load
Data
CLOCK
LOAD
DATA
GND
Q_1QPAD
Q_2QPAD
Q_3QPAD
Q_4QPAD
Q_9QPADQ_10QPADQ_11QPAD
Q_12QPADQ_13QPADQ_14QPAD
Q_15QPADQ_16QPADQ_17QPAD
C33
1N0
SM
C34
1N0
SM
C35
1N0
SM
C36
1N0
SM
C37
1N0
SM
C38
1N0 SM
Q_18
QPAD
Q_19
QPAD
Q_20
QPAD
Q_21
QPAD
LOUT
ROUT
1234567891011121314151617181920212223242526272829303132
SK8FFC32V
Aux1L
Aux1R
CDL
CDR
AVL
AVR
Aux2L
Aux2R
Tape1IL
Tape1IR
Tape2IL
Tape2IR
TunerL
TunerR
PlugL
PlugR
To
Plu
g-i
n P
CB
PLUGINL
PLUGINR
R80
22K
SM
R81
22K
SM
TL1TOOLING
TL2TOOLING
S.J.B.
FD_1
FIDUCIAL
FD_2
FIDUCIAL
BARCODE LABEL
Photo Strip
+6V8
-7V2
C10
680P
PP
C11
680P
PP
DetailDrilling
TL3TOOLING
TL4TOOLING
Update Box
PCBL832PB
C1
10U NP
C3
10U NP
+
C31
22U EL
+C32
22U EL
+6V8
-7V2
D16V8 400MW
D26V8 400MW
+15V
R1
1K0 SM
R2
1K0 SM
R356R SM
R456R SM
C81N0 SM
C91N0 SM
C1547P SM
C16
47P SM
C1747P SM
C18
47P SM
C1947P SM
C2047P SM
C2147P SM
C2247P SM
C2347P SM
C2447P SM
C2547P SM
C26
47P SM
C1347P SM
C14
47P SM
1 23 45 67 89 10
11 1213 1415 16
PL6
DIL16 VPLG
TL5TOOLING_BIG
TL6TOOLING_BIG
R51K8 SM
Issue BoxDrilling Detail
DD1
DD_ISSUE
R6100K SM
R7100K SM
+ C222U EL
+C4
22U EL