Service Manual A32 Issue 1.
Contents List ! Phono board L870 o Circuit description o Component overlay o Parts list o Circuit diagrams ! Amplifier & PSU board L882 o Circuit description o Component overlay o Parts list o Circuit diagrams ! Display board L928 o Component overlay o Parts list o Circuit diagrams ! Preamplifier board L937 o Circuit description o Component overlay o Parts list o Circuit diagrams ! 3rd Channel Amplifier board L911 o Component overlay o Parts list o Circuit diagrams ! Transformer specifications o
Phono Board L870 Contents ! Circuit description ! Component overlay ! Parts list ! Circuit diagrams
AV8 Phono Board Circuit Description Refer to circuit diagram L870 sheet 1 The phono board is a simple single stage RIAA amplifier and consists of two channels of high gain amplification, and the ability to switch between moving magnet (MM) and moving coil (MC) settings. PSU The unit derives its + 15V regulated rails from the unit it is fitted into with only local decoupling capacitors on board. Interface The unit connects to the host unit via a 8 way connector.
L870 Phono Board Parts List Issue 2.
L870 Phono Board Parts List Issue 2.
1 2 3 4 5 6 8 7 D D C C Q_1 SK1 PHONO2HG LEFT CHANNEL L870C2_2.0.SCH LEFT IN +15V Q_3 LEFT OUT EMC C1 100N CD SK2 Q_5 1 0V_SIG Q_2 RIGHT CHANNEL L870C3_2.0.SCH RIGHT IN Q_4 Q_6 RIGHT OUT 0V_SIG 1 2 3 4 5 6 7 8 AMPCT8 Q_7 -15V 0V_SIG Q_8 0V_HF B A B PCB1 DRAWING TITLE EL1 PCB L870PB_2 A A85 PHONO STAGE - TOP LEVEL Update Box 23425 UPDATE_BOX Circuit Diagram Notes: 01_1070 JAG 17/4/01 A & R Cambridge Ltd.
1 2 3 4 5 6 8 +15V Q_102 + 7 C102 100U SILMIC C104 100N PE C119 D R100 330R MF 0V_HF R101 100R MF 100P PP D 0V_SIG R102 100R MF C101 TR100 BC556B TR102 BC556B 1N0 PP TR103 BC556B C110 TR101 BC556B + C100 22U EL 4N7 PP C120 1N0 PP C112 R109 12K MF TR108 BC546B 10N PP AX C111 R115 R110 12K MF 15K MF 10N PP AX LEFT IN C105 100N PE 7 TR107 2SA1085 R111 Q_101 1U0 PE R108 47K MF 10 C109 100P PPW 11 SW100D 4PCO R105 100R MF 0V_SIG R119 22R MF R117 C118 6 R122 39K MF
1 2 3 4 5 6 8 +15V Q_202 + 7 C202 100U SILMIC C204 100N PE C219 D R200 330R MF 0V_HF R201 100R MF 100P PP D 0V_SIG R202 100R MF C201 TR200 BC556B TR202 BC556B 1N0 PP C210 TR203 BC556B TR201 BC556B 4N7 PP C220 + C200 22U EL 1N0 PP C212 R209 12K MF TR208 BC546B 10N PP AX C211 R215 R210 12K MF 15K MF 10N PP AX RIGHT IN C205 100N PE 2 3 1 7 Q_201 56K MF 1U0 PE IC200 3 C218 10U NP R213 100K MF TR204 BC556B 100P PPW R205 100R MF 0V_SIG 0V_SIG TR205 BC556B 9 8 7 C209
Amplifier + PSU Board L882 Contents ! Circuit description ! Component overlay ! Parts list ! Circuit diagrams
Amplifier & PSU Circuit Description Refer to L882 circuit diagrams This is the printed circuit board that provides the power supply and output stage amplifiers for the A32 integrated and P35 power amplifiers.
The circuitry around SK201A and IC200 is to receive and demodulate remote control commands sent in via the rear panel jack socket. This is for multi-room applications. L200 and C200 form a parallel resonant circuit at approximately 37kHz. The output from this bandpass filter is passed into IC200A where it is ‘chopped’ and fed to IC200B to provide the output signal. SK201B is a 13VDC signal trigger output which is active whenever the amplifier is powered up.
C307 and C308 with R333 and R335 provide the compensation necessary to ensure stability when the loop is closed. They are Miller capacitors which dramatically reduce the transimpedance (i.e. current to voltage gain) of the current mirrors at high frequencies.
L882 Amplifier and PSU Board Parts List Issue 3.
L882 Amplifier and PSU Board Parts List Issue 3.
L882 Amplifier and PSU Board Parts List Issue 3.
L882 Amplifier and PSU Board Parts List Issue 3.
L882 Amplifier and PSU Board Parts List Issue 3.
L882 Amplifier and PSU Board Parts List Issue 3.
2 3 4 5 6 L882C3 L882C3_4.1.
1 2 3 4 5 6 7 8 NEUTRAL SK204 7 2 6 1 5 TP203 HS200 TO220HS08REG TX200 1 0V MOLEXPWR8 F202 T750mA SM LIVE C205 3N3 MAINS EMC Shield Green 1 TP200 NEUTRAL SK202 CAGECLAMP1 NF VR200 VDR 115V C207 F200 TP202 3N3 MAINS T4A C206 3N3 MAINS BC200 TOOLING4.
1 2 3 4 5 6 7 8 VPOS D D R319 100R SM R315 100R SM R300 10K SM R316 100R SM PRE DRIVER PNP CURRENT MIRROR TR300 FMMT597 TR310 FMMT497 TR301 FMMT597 R301 10K SM + C300 100U EL DZ300 15V 350MW SM TR309 FMMT497 R321 22R SM TR302 FMMT597 TR321 FMMT597 OUTPUT STAGE R338 150R SM 0V_HF 3K3 SM TR311 FMMT497 C317 TR318 SAP15N 6 5 0V_SIG INPUT V TO I AMP R324 3 1K0 SM DZ302 4V7 350MW SM 2 0V_SIG IC300A 1 TL072CD R327 22K SM DZ303 4V7 350MW SM TP304 + R343 100R SM D303 1N400
1 2 3 4 5 6 7 8 VPOS D D R419 100R SM R415 100R SM R400 10K SM R416 100R SM PRE DRIVER PNP CURRENT MIRROR TR400 FMMT597 TR410 FMMT497 TR401 FMMT597 R401 10K SM + C400 100U EL DZ400 15V 350MW SM TR409 FMMT497 R421 22R SM TR402 FMMT597 TR421 FMMT597 OUTPUT STAGE R438 150R SM 0V_HF 3K3 SM TR411 FMMT497 C417 TR418 SAP15N 6 5 0V_SIG V TO I AMP R424 INPUT 3 1K0 SM DZ402 4V7 350MW SM 0V_SIG IC400A 1 TL072CD TP404 R427 22K SM DZ403 4V7 350MW SM R422 22R SM R437 22R SM +
Display Board L928 Contents ! Component overlay ! Parts list ! Circuit diagrams
CAM Products 2000(TM): L928PB_B.
L928 Display Board Parts List Issue B.
L928 Display Board Parts List Issue B.
L928 Display Board Parts List Issue B.
1 2 3 4 5 6 8 7 A32 FMJ DISPLAY PCB D D L928CT_B.1 L928CT_2_B.3.SCH MICRO FD_1 FD_2 FIDUCIAL FIDUCIAL FIX7 FIX2 FIX10 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIX5 FIX6 FIX13 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 C C CHASSIS 1 (BY SK3) C39 1N0 SM C40 1N0 SM 0V_D 0V_D C41 1N0 SM C43 1N0 SM 0V_D 0V_D 0V_D FIX1 FIX8 FIX9 FIX3 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.2 FIXING HOLE 3.5 C38 1N0 SM C44 1N0 SM 0V_D FIX11 FIX12 FIXING HOLE 3.5 FIXING HOLE 3.
7 MODE D DOWN DVD UP ENTER POWER SELECT CD TUNER VCR SP2 TAPE SP1 SP4 SP2 SP5 LED SPACER SP9 LED SPACER SP10 SP1 R1 R2 R3 R4 R5 R6 R7 R8 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM SW6 SW12 SW11 SW8 SW7 SW13 SW14 SW15 TACTSW A1505 TACTSW A1505 TACTSW A1505 TACTSW A1505 TACTSW A1505 TACTSW A1505 TACTSW A1505 TACTSW A1505 R68 R9 R10 R11 R12 R13 R14 R15 R16 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM SW17 SW16 SW1 SW4 SW2 SW5 SW3 SW10 SW9 TACTSW A1505 TACTS
Preamplifier Board L937 Contents ! Circuit description ! Component overlay ! Parts list ! Circuit diagrams
Pre-amplifier circuit description Refer to L937 circuit diagrams The A32 preamplifier is a high-performance, DC coupled design with microprocessor control of input select, two independent tape loops, electronic volume control, tone bypass and electronic tone control. It features a discrete power supply and low-noise linear circuitry to obtain very good distortion and noise performance, suitable for high quality source material such as CD or DVD-A.
L937 Preamplifier Board Parts List Issue 1.
L937 Preamplifier Board Parts List Issue 1.
L937 Preamplifier Board Parts List Issue 1.
L937 Preamplifier Board Parts List Issue 1.
L937 Preamplifier Board Parts List Issue 1.
1 2 3 4 D D C C Main signal path L937C2_1.1.SCH Power supply L937C3_1.1.SCH B B USE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM DRAWING TITLE Integrated amplifier preamp PCB1 A PCB L937PB_1 1 23425 Circuit Diagram Notes: A 01_E014 JBR 28/11/01 Fuses uprated to 2A 1.1 A & R Cambridge Ltd. Pembroke Avenue 01_1142 JBR 14/8/01 First production release 1.0 Denny Industrial Centre ECO No.
-15V TUNER R 0V_SIG C122 470P FKP2 AVL1 EMC 1 AVL R126 MODULE L C126 100N SM 0V_SIG +5V 0V_SIG VCR01 VCR11 VCR21 AV L 1K0 SM F AVR1 C121 1N0 SM VCR 0 VCR 1 VCR 2 0V_SIG AVR -15V AV R C124 470P FKP2 R130 100K SM +15V D108 BAV99W DUAL SM D112 BAV99W DUAL SM 4 5 6 7 12 11 10 9 MODULE R C127 100N SM 0V_SIG -15V C128 100N SM 0V_SIG DVDL R156 DVD INPUT 0V_SIG DVD L DVDR1 C140 470P FKP2 AUX L CD L TUNER L AV L DVD L TAPE IN L VCR IN L MODULE L 0V_SIG 0V_SIG PHONO4G DVDR R
1 2 3 4 D302 D304 BAS16W SM Q305 2SA1964 I SK300 MOLEXPWR4 3 4 Q306 BC846B UR+ D300 S1D F300 D301 S1D + C300 1000u 35V AC1 Q300 J112 R300 330R SM + D310+ 1 2 C308 100N SM C303 3300u 25V D310 15V 350MW SM C314 1N0 PP C F301 AC2 C309 100N SM Vout C315 1N0 PP D D305 BAS16W SM + C312 220U EL R302 1K2 SM D307 S1D + C310 1000u 35V D311 15V 350MW SM C305 10U EL +15V SK301 1 2 3 -15V 4 0V_PSU IDC4S 0V_PSU 0V_MODULE SP300 STAR POINT 4 0V_PSU Q307 BC856B 0V_SIG -15V3 0V_HF 0
3rd Channel Board L911 Contents ! Component overlay ! Parts list ! Circuit diagrams
L911 3rd Channel Amplifier Board Parts List Issue 1.
L911 3rd Channel Amplifier Board Parts List Issue 1.
L911 3rd Channel Amplifier Board Parts List Issue 1.
1 2 3 4 5 6 7 8 +5V_D SK100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 D 14 +5V_D C100 100N SM C101 100N SM + C102 100U EL TP103 SPKR1 ON SPKR2 ON THERMPROT VIPROT1 DCPROT1 0V_D TP104 TP105 TP106 TP107 TP108 D +5V_D 0V_D FFC 14W 2.
1 2 3 4 5 6 8 7 VPOS D D R319 100R SM R315 100R SM R300 10K SM R316 100R SM PRE DRIVER PNP CURRENT MIRROR TR300 FMMT597 TR310 FMMT497 TR301 FMMT597 R301 10K SM + C300 100U EL DZ300 15V 350MW SM TR309 FMMT497 R321 22R SM TR302 FMMT597 TR321 FMMT597 OUTPUT STAGE R338 150R SM 0V_HF TR318 SAP15N 3K3 SM TR311 FMMT497 C317 R328 4K7 SM C INPUT V TO I AMP R324 3 1K0 SM DZ302 4V7 350MW SM 2 8 INPUT FILTER 0V_SIG IC300A 1 TL072CD DZ303 4V7 350MW SM R322 22R SM 4 R327 22K SM
Transformer Specifications Contents ! L914TX ! L915TX
Mechanical Assembly Contents ! General assembly parts list A32 ! General assembly parts list P35 ! General assembly parts list P35/3
A32 General Assembly Parts List E047rs_2 ITEM A B 1 7 39 35 230V L813RC 115V 100V SILVER BLACK L907TX E045AY E838CP E839AY HA4V06S E045AYB E838CPB E839AYB HA4V06B DESCRIPTION HANDY REMOTE 3 DIVA/DIVA SERIES CR389 TRANSF A85 100V FRONT PANEL ASSEMBLY COVER LARGE VOLUME KNOB M4 x 6mm Screw 54 2 3 4 N/A E046AY E804HK E804MI N/A REAR PANEL ASSEMBLY HEAT SINK MAINS INSULATOR 5 6 8 9 10 51 38 40 12 13 14 16 17 18 19 20 21 41 49 22 48 37 24 23 25 47 46 36 42 43 44 52 45 E820CH E822PM1 E850MC E853MC E8
A32 General Assembly Parts List E047rs_2 ITEM A B 50 28 31 30 32 33 34 53 29 27 230V L813RC 115V 100V L907TX L870AY L882AY L914CA L914TX L915CA L916CA L917CA L918CA L928AY L937AY WA8511A L894AY L915TX SILVER BLACK DESCRIPTION HANDY REMOTE 3 DIVA/DIVA SERIES CR389 TRANSF A85 100V PHONO PCB A85 POWERAMP PCB DISPLAY TO PRE AMP CABLE ASSY A32 TRANSFORMER DISPLAY TO POWERAMP CABLE ASSY POWERAMP TO HEADPHONE CABLE ASSY PREAMP TO POWERAMP CABLE ASSY PHONO TO PREAMP CABLE ASSY A32 DISPLAY PCB A32 PREAMP PC
P35 General Assembly Parts List E078rs_2 ITEM 1 2 3 4 5 230V 115V 8K004 8K006 DESCRIPTION FASCIA ASSEMBLY COVER M4 x 6mm Screw 2-WAY JUMPER SOCKET 0.
P35/3 Channel General Assembly Parts List E079rs_2 ITEM 1 2 3 4 5 7 8 9 230V 115V 8K004 8K006 E060AY E804HK E804MI DESCRIPTION FASCIA ASSEMBLY COVER M4 x 6mm Screw 2-WAY JUMPER SOCKET 0.
ARCAM All parts can be ordered via spares@arcam.co.
