Arcam FMJ A32 Service Manual
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Arcam FMJ A32 Service Manual

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Service Manual
FMJ A32, P35 & P35/3
Amplifi ers
A32
Issue 1.0
ARCAM
ARCAM

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Summary of Contents for Arcam FMJ A32

  • Page 1 Service Manual Issue 1.0 FMJ A32, P35 & P35/3 Amplifi ers ARCAM ARCAM...
  • Page 2 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...
  • Page 3 Phono Board L870 Contents Circuit description Component overlay Parts list Circuit diagrams...

  • Page 4: Circuit Description

    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.
  • Page 6 L870 Phono Board Parts List Issue 2.0 Designator Part Description 2A410 CERD 100N 63V -20% +80% RA C100 2N622 ELST 22U 63V C101 2D210 PPRO 1N0 5% 63V RA C102 2P710AS ELEC 100U 25V SILMIC C103 2P710AS ELEC 100U 25V SILMIC C104 2K410 PEST 100N 63V 10%...
  • Page 7 L870 Phono Board Parts List Issue 2.0 Designator Part Description R117 1H522 RES MF W4 1% 2M2 R118 1H022 RES MF W4 1% 22R R119 1H022 RES MF W4 1% 22R R120 1H022 RES MF W4 1% 22R R121 1H022 RES MF W4 1% 22R R122 1H339...
  • Page 8 LEFT CHANNEL L870C2_2.0.SCH +15V LEFT IN LEFT OUT PHONO2HG 0V_SIG RIGHT CHANNEL 100N CD L870C3_2.0.SCH RIGHT IN RIGHT OUT 0V_SIG AMPCT8 -15V 0V_SIG 0V_HF DRAWING TITLE PCB1 A85 PHONO STAGE - TOP LEVEL Update Box Circuit Diagram 23425 UPDATE_BOX L870PB_2 Notes: 01_1070 17/4/01...
  • Page 9 +15V Q_102 C102 C104 100U SILMIC 100N PE C119 0V_HF 0V_SIG R100 R101 R102 330R MF 100R MF 100R MF 100P PP C101 TR100 TR102 BC556B TR103 1N0 PP BC556B BC556B C110 TR101 BC556B + C100 4N7 PP 22U EL C120 1N0 PP R109...
  • Page 10 +15V Q_202 C202 C204 100U SILMIC 100N PE C219 0V_HF 0V_SIG R200 R201 R202 330R MF 100R MF 100R MF 100P PP C201 TR200 TR202 BC556B TR203 1N0 PP BC556B BC556B C210 TR201 BC556B + C200 4N7 PP 22U EL C220 1N0 PP R209...
  • Page 11 Amplifier + PSU Board L882 Contents Circuit description Component overlay Parts list Circuit diagrams...
  • Page 12 rails will vary with mains input and load conditions. The Amplifier & PSU Circuit Description current is around 20mA per relay. Refer to L882 circuit diagrams Star point SP100 is the ground ‘mecca’ for the entire This is the printed circuit board that provides the power amplifier (comprising all three PCBs within the unit).
  • Page 13 The circuitry around SK201A and IC200 is to receive and the feedback resistors that sets the overall gain of the demodulate remote control commands sent in via the rear amplifier. panel jack socket. This is for multi-room applications. L200 and C200 form a parallel resonant circuit at approximately IC300B acts as an inverting integrator and its purpose is to 37kHz.
  • Page 14 C307 and C308 with R333 and R335 provide the compensation necessary to ensure stability when the loop is R308, R314 and C320 form a low pass filter from which closed. They are Miller capacitors which dramatically reduce the DC detection circuits can sense excessive DC at the the transimpedance (i.e.
  • Page 16 L882 Amplifier and PSU Board Parts List Issue 3.0 Designator Part Description BR200 3BGBU8D BRIDGE RECTIFIER 8A 200V C100 2C210 MLC 1N0 50V X7R 10% SM C200 2D168 PPRO 680P 5% 63V RA C201 2C410 MLC 100N 50V X7R 10% SM C202 2C410 MLC 100N 50V X7R 10% SM...
  • Page 17 L882 Amplifier and PSU Board Parts List Issue 3.0 Designator Part Description C403 2N710 ELST 100U 25V C404 2N710 ELST 100U 25V C405 2N610 ELST 10U 50V C406 2N710B ELST 100U 100V C407 2C110 MLC 100P 50V NPO 5% SM C408 2C110 MLC 100P 50V NPO 5% SM...
  • Page 18 L882 Amplifier and PSU Board Parts List Issue 3.0 Designator Part Description IC202 5J7414D SURFACE MOUNT HEX SCHMITT TRIGGER IC300 5B072D IC AUDIO SM DUAL TL072 IC400 5B072D IC AUDIO SM DUAL TL072 L200 7D327 27mH INDUCTOR L300 7D002C INDUCT 2U2 12x20mm L400 7D002C INDUCT 2U2 12x20mm...
  • Page 19 L882 Amplifier and PSU Board Parts List Issue 3.0 Designator Part Description R310 1A247 RES SM W4 1% 4K7 1206 R311 1A310 RES SM W4 1% 10K 1206 R312 1A310 RES SM W4 1% 10K 1206 R313 1A310 RES SM W4 1% 10K 1206 R314 1A247 RES SM W4 1% 4K7 1206...
  • Page 20 L882 Amplifier and PSU Board Parts List Issue 3.0 Designator Part Description R416 1A110 RES SM W4 1% 100R 1206 R417 1A110 RES SM W4 1% 100R 1206 R418 1A110 RES SM W4 1% 100R 1206 R419 1A110 RES SM W4 1% 100R 1206 R420 1A110 RES SM W4 1% 100R 1206...
  • Page 21 L882 Amplifier and PSU Board Parts List Issue 3.0 Designator Part Description TH200 1T002 THERMISTOR SIEMENS B59008 TR100 4B179 NPN TRANS MP BD179 TR101 4B179 NPN TRANS MP BD179 TR200 4B179 NPN TRANS MP BD179 TR201 4AFMMT497 TRANS LF SS N SM FMMT497 TR202 4AFMMT597 TRANS LF SS P SM FMMT597 TR203...
  • Page 22 L882C3 0V_SIG L882C3_4.1.SCH L SIG VIPROT_L 0V_TRIG 0V_HF_R INPUT VIPROT 0V_SIG DCPROT_L 0V_SIG DCPROT TP121 0V_LS_L LS L 0V_D 0V_LS_R 0V_LS OUTPUT 0V_HF_L L882C2 0V_HF +49V 0V_D L882C2_4.1.SCH 0V_HF_L 0V_LS_L VPOS -49V 0V_PSU +5V_D VNEG 0V_D +5V(D) SP100 +49V 0V_PSU 0V_PSU VPOS STAR_8...
  • Page 23 NEUTRAL SK204 TP203 HS200 TX200 TO220HS08REG 1 0V 9VRMS IC201 +5V_D SK203 MOLEXPWR8 F202 L4940V5 TP204 IEC3 NO RIVETS RLY200A Vout +5V(D) TP205 T750mA SM D200 D202 1N4003F 1N4003F DPDT5V LIVE SW200B VR200 C207 VOL SEL SLIDE VDR 115V C225 C226 F200 TP202...
  • Page 24 VPOS R319 100R SM R315 R316 R300 100R SM 100R SM PRE DRIVER 10K SM PNP CURRENT MIRROR TR310 TR300 TR301 FMMT497 FMMT597 FMMT597 R301 10K SM R321 TR302 C300 DZ300 TR309 22R SM FMMT597 100U EL 15V 350MW SM FMMT497 TR321 FMMT597...
  • Page 25 VPOS R419 100R SM R415 R416 R400 100R SM 100R SM PRE DRIVER 10K SM PNP CURRENT MIRROR TR410 TR400 TR401 FMMT497 FMMT597 FMMT597 R401 10K SM R421 TR402 C400 DZ400 TR409 22R SM FMMT597 100U EL 15V 350MW SM FMMT497 TR421 FMMT597...

  • Page 26: Display Board

    Display Board L928 Contents Component overlay Parts list Circuit diagrams...
  • Page 27 CAM Products 2000(TM): L928PB_B.GTO...
  • Page 28 L928 Display Board Parts List Issue B.3 Designator Part Description 2C018 MLC 18P 50V X7R 10% SM 2C018 MLC 18P 50V X7R 10% SM 2C410 MLC 100N 50V X7R 10% SM 2C410 MLC 100N 50V X7R 10% SM 2C410 MLC 100N 50V X7R 10% SM 2C410 MLC 100N 50V X7R 10% SM 2C410...
  • Page 29 L928 Display Board Parts List Issue B.3 Designator Part Description LED3 3D001 LED GREEN 5MM LED4 3D001 LED GREEN 5MM LED5 3D001 LED GREEN 5MM LED6 3D001 LED GREEN 5MM LED7 3D001 LED GREEN 5MM LED8 3D001 LED GREEN 5MM LED9 3D001 LED GREEN 5MM...
  • Page 30 L928 Display Board Parts List Issue B.3 Designator Part Description 1A310 RES SM W4 2% 10K 1A310 RES SM W4 2% 10K 1A110 RES SM W4 1% 100R 1206 1A110 RES SM W4 1% 100R 1206 1A110 RES SM W4 1% 100R 1206 1H233 RES MF W4 1% 3K3 1A310...
  • Page 31 A32 FMJ DISPLAY PCB L928CT_B.1 L928CT_2_B.3.SCH MICRO FD_1 FD_2 FIDUCIAL FIDUCIAL FIX7 FIX2 FIX10 FIX5 FIX6 FIX13 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 FIXING HOLE 3.5 CHASSIS 1 1N0 SM (BY SK3) 0V_D 1N0 SM 1N0 SM...
  • Page 32 SP10 SPACER F195 SPACER F195 SPACER F195 SPACER F195 SPACER F195 SPACER F195 SPACER F195 SPACER F195 SPACER F195 SPACER F195 PHONO/ MODE RECORD TONE DOWN ENTER POWER SELECT TUNER TAPE BC847B BC847B 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM 10K SM...
  • Page 33 Preamplifier Board L937 Contents Circuit description Component overlay Parts list Circuit diagrams...
  • Page 34 excursion which wastes power and may damage the drive Pre-amplifier circuit description units. Refer to L937 circuit diagrams The digital pots Z108D and Z108A control the bass and treble respectively. This is done by moving the wiper The A32 preamplifier is a high-performance, DC coupled connected to the frequency-sensitive impedance between the design with microprocessor control of input select, two non-inverting and inverting terminals of Z112A, effectively...
  • Page 36 L937 Preamplifier Board Parts List Issue 1.0 Designator Part Description C100 2C210 MLC 1N0 50V X7R 10% SM C101 2D147W WIMA FKP2 470P 63V CAP C102 2D147W WIMA FKP2 470P 63V CAP C103 2D147W WIMA FKP2 470P 63V CAP C104 2C410 MLC 100N 50V X7R 10% SM C105...
  • Page 37 L937 Preamplifier Board Parts List Issue 1.0 Designator Part Description C162 2D147W WIMA FKP2 470P 63V CAP C163 2D147W WIMA FKP2 470P 63V CAP C164 2C210 MLC 1N0 50V X7R 10% SM C165 2D147W WIMA FKP2 470P 63V CAP C166 2D147W WIMA FKP2 470P 63V CAP C167...
  • Page 38 L937 Preamplifier Board Parts List Issue 1.0 Designator Part Description D116 3AV99W DIODE SS SM BAV99W D117 3AV99W DIODE SS SM BAV99W D118 3AV99W DIODE SS SM BAV99W D119 3AV99W DIODE SS SM BAV99W D120 3AS16W DIODE SS SM BAS16W D121 3AV99W DIODE SS SM BAV99W...
  • Page 39 L937 Preamplifier Board Parts List Issue 1.0 Designator Part Description R135 1A222 RES SM W4 1% 2K2 1206 R136 1A222 RES SM W4 1% 2K2 1206 R137 1A322 RES SM W4 1% 22K 1206 R138 1A322 RES SM W4 1% 22K 1206 R139 1A322 RES SM W4 1% 22K 1206...
  • Page 40 L937 Preamplifier Board Parts List Issue 1.0 Designator Part Description R198 1A410 RES SM W4 1% 100K 1206 R199 1A410 RES SM W4 1% 100K 1206 R200 1A822 RES SM W4 1% 2R2 1206 R201 1A822 RES SM W4 1% 2R2 1206 R202 1A822 RES SM W4 1% 2R2 1206...
  • Page 41 Main signal path Power supply L937C2_1.1.SCH L937C3_1.1.SCH USE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM DRAWING TITLE Integrated amplifier preamp PCB1 Circuit Diagram 23425 Notes: 01_E014 28/11/01 Fuses uprated to 2A A & R Cambridge Ltd. L937PB_1 Pembroke Avenue 01_1142 14/8/01 First production release Denny Industrial Centre...
  • Page 42 D100 D105 +15V BAV99W DUAL SM -15V BAV99W DUAL SM +15V +15V D103 -15V Z100 BAV99W DUAL SM Z109A AUX L R110 TL072 SM SK2A +15V CD L 2K2 SM CDL1 R100 SK4B Z111A CD INPUT CD L TUNER L 0V_SIG R108 TAPEO1...
  • Page 43 D302 D304 BAS16W SM BAS16W SM Z301 Q305 +15V LM317T 2SA1964 Vout +15V3 SK300 Q306 BC846B D305 MOLEXPWR4 R303 D300 D301 BAS16W SM Q300 470R SM + C300 J112 +3.75V C304 1000u 35V 100N SM F300 R300 R302 + C306 330R SM D310+ 1K2 SM...
  • Page 44 Channel Board L911 Contents Component overlay Parts list Circuit diagrams...
  • Page 46 L911 3rd Channel Amplifier Board Parts List Issue 1.1 Designator Part Description BR100 3BGBU8D BRIDGE RECTIFIER 8A 200V C100 2C410 MLC 100N 50V X7R 10% SM C101 2C410 MLC 100N 50V X7R 10% SM C102 2N710 ELST 100U 25V C103 2C310 MLC 10N 50V X7R 10% SM C104...
  • Page 47 L911 3rd Channel Amplifier Board Parts List Issue 1.1 Designator Part Description R304 1A310 RES SM W4 1% 10K 1206 R305 1A310 RES SM W4 1% 10K 1206 R306 1A310 RES SM W4 1% 10K 1206 R307 1A310 RES SM W4 1% 10K 1206 R308 1A322 RES SM W4 1% 22K 1206...
  • Page 48 L911 3rd Channel Amplifier Board Parts List Issue 1.1 Designator Part Description TR300 4AFMMT597 TRANS LF SS P SM FMMT597 TR301 4AFMMT597 TRANS LF SS P SM FMMT597 TR302 4AFMMT597 TRANS LF SS P SM FMMT597 TR303 4AFMMT597 TRANS LF SS P SM FMMT597 TR304 4AFMMT597 TRANS LF SS P SM FMMT597 TR305...
  • Page 49 +5V_D TP102 SK100 TP103 SPKR1 ON 0V_D TP104 SPKR2 ON TP105 THERMPROT TP106 VIPROT1 TP107 DCPROT1 TP108 +5V_D +5V_D R107 0V_SIG TH100 PTH90DEG FFC 14W 2.54MM VER 0V_D 2R2 SM IC100G C100 + C102 C101 SP100 0V_D IC100E PIN 1 TO THE LEFT AS YOU LOOK FROM THE FRONT TP116 74HC14D 100N SM...
  • Page 50 VPOS R319 100R SM R315 R316 R300 100R SM 100R SM PRE DRIVER 10K SM PNP CURRENT MIRROR TR310 TR300 TR301 FMMT497 FMMT597 FMMT597 R301 10K SM R321 TR302 C300 DZ300 100U EL TR309 22R SM FMMT597 15V 350MW SM FMMT497 TR321 FMMT597...
  • Page 51 Transformer Specifications Contents L914TX L915TX...

  • Page 54: Mechanical Assembly

    Mechanical Assembly Contents General assembly parts list A32 General assembly parts list P35 General assembly parts list P35/3...
  • Page 55 A32 General Assembly Parts List E047rs_2 ITEM 230V 115V 100V SILVER BLACK DESCRIPTION WHERE USED L813RC HANDY REMOTE 3 DIVA/DIVA SERIES CR389 L907TX TRANSF A85 100V E045AY E045AYB FRONT PANEL ASSEMBLY E838CP E838CPB COVER E839AY E839AYB LARGE VOLUME KNOB HA4V06S HA4V06B M4 x 6mm Screw COVER TO CHASSIS...
  • Page 56 A32 General Assembly Parts List E047rs_2 ITEM 230V 115V 100V SILVER BLACK DESCRIPTION WHERE USED L813RC HANDY REMOTE 3 DIVA/DIVA SERIES CR389 L907TX TRANSF A85 100V L870AY PHONO PCB THROUGH REAR PANEL L882AY WA8511A L894AY A85 POWERAMP PCB L914CA DISPLAY TO PRE AMP CABLE ASSY L914TX L915TX A32 TRANSFORMER...
  • Page 57 P35 General Assembly Parts List E078rs_2 ITEM 230V 115V 100V SILVER BLACK DESCRIPTION WHERE USED E058AY E058AYB FASCIA ASSEMBLY FRONT OF CHASSIS E838CP E838CPB COVER HA4V06S HA4V06B M4 x 6mm Screw COVER (SIDE) TO CHASSIS 8K004 2-WAY JUMPER SOCKET 0.1” M7571-05 ON L882AY (NEAR SWITCH) 8K006 CONNECTOR 14MM LINK BAR P2148...
  • Page 58 P35/3 Channel General Assembly Parts List E079rs_2 ITEM 230V 115V 100V SILVER BLACK DESCRIPTION WHERE USED E058AY E058AYB FASCIA ASSEMBLY FRONT OF CHASSIS E839CP E839CPB COVER HA4V06S HA4V06B M4 x 6mm Screw COVER (SIDE) TO CHASSIS 8K004 2-WAY JUMPER SOCKET 0.1” M7571-05 ON L882AY (NEAR SWITCH) 8K006 CONNECTOR 14MM LINK BAR P2148...
  • Page 59 ARCAM All parts can be ordered via spares@arcam.co.uk Pembroke Ave, Waterbeach, Cambridge, CB5 9PB, ENGLAND TEL: +44(0) 1223 203 203 FAX: +44(0) 1223 863 384...

This manual is also suitable for:

Fmj p35/3Fmj p35

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