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Arcam A85 Title, Phono Pcb, DWG. No. L870RS, Issue, ECO No, Date, Drawn, Run-Outsheet, SHEET 2 of

Models: A85

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TITLE	A85		PHONO PCB

DWG. No. L870RS				ISSUE 2.0		ECO No 01_1070	DATE 17-4-01

DRAWN	BY	JAG			RUN-OUT SHEET		SHEET 2 of 1


L870PB_2		1	X PRINTED CIRCUIT BOARD				PCB1

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* Additions Since Last Issue **

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Part	Qty Iss		Description		Designators
2D210	2		PPRO 1N0 5% 63V	RA	C120	C220
L870PB_2	1	X	PRINTED CIRCUIT	BOARD	PCB1

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* Deletions Since Last Issue **

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Part	Qty Iss		Description		Designators
2D147W	2		PPRO W 470P 63V	5% RA	C114	C214
L870PB_1	1	X	PRINTED CIRCUIT	BOARD	PCB1

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Arcam A85 Title, Phono Pcb, DWG. No. L870RS, Issue, ECO No, Date, Drawn, Run-Outsheet, SHEET 2 of, L870PB, PCB1, Part

Contents

DiVA A85, P85 & P85/3 Ampliﬁers ARCAMContents List Contents listService guide Circuit diagramsInput switching Volume controlPower supply Pre-amplifiercircuit descriptionL882 Circuit Sheet Amplifier & PSU Circuit DescriptionL882 Circuit Sheet L882 Circuit Sheet The basic principle of operation is followsAmplifier L870 Phono Circuit DescriptionInterface The 14 pin connector is numbered as follows The ground naming convention is as followsA85, P85, P85/3 Service Guide Quiescent Current SettingBuild History Software HistoryFault Diagnostics FaultHints & Tips ActionA85 amplifier and PSU - top sheet Circuit Diagram INTEGRATED / PRE-POWER MODE SELECT SWITCH23425 FROM PREAMPCircuit Diagram DRAWING TITLESheet 2 of L882C2A85 amplifier - power output stage left Circuit DiagramDRAWING TITLE Sheet 3 ofA85 amplifier - power output stage right Circuit DiagramDRAWING TITLE Sheet 4 ofCircuit Diagram DVD DISPLAY PCBPembroke Avenue Denny Industrial CentreUSE EXCLUDE NF WHEN USING RUNOUT SHEET PROGRAM DRAWING TITLEPembroke Avenue WaterbeachIntegrated amplifier preamp - main signal path Circuit DiagramDRAWING TITLE Pembroke AvenueDRAWING TITLE Denny Industrial CentreWaterbeach Cambridge CB5 9PBCircuit Diagram A85 DISPLAY PCBMARY AMP DISPLAY PCB 23425Circuit Diagram ISSUEMARY AMP DISPLAY PCB DRAWING TITLECircuit Diagram ISSUEA85 PHONO STAGE - TOP LEVEL 23425Circuit Diagram ISSUEA85 PHONO STAGE - LEFT CHANNEL 23425Circuit Diagram ISSUEA85 PHONO STAGE - RIGHT CHANNEL 23425DRAWING TITLE Pembroke AvenueDenny Industrial Centre WaterbeachCircuit Diagram AP85 third channel - output stageDRAWING TITLE Sheet 2 ofP85 microcontroller and switch DRAWING TITLEPembroke Avenue Denny Industrial CentrePage Page Page Page Page Page Page ARCAM ARCAM PCB Bill of MaterialsARCAM PCB Bill of MaterialsARCAM PCB Bill of MaterialsARCAM 2D210ARCAM L866PBARCAM PartQty Iss DescriptionARCAM 2D210ARCAM PartARCAM B1013ISSUE TITLEA85 PHONO PCB DWG. No. L870RSISSUE Additions Since Last IssueDeletions Since Last Issue TITLEARCAM PCB Bill of MaterialsARCAM 4B179TITLE P85 SWITCH BOARD ISSUEA TACT SWITCH SKHVPE TACT SWITCH BOURNS SDTX-644TITLE P85 SWITCH BOARD ISSUETACT SWITCH 2-PINLOW PROF DWG. NoA85 General Assembly Parts List A85 General Assembly Parts List WHERE USED230V 115VP85 General Assembly WHERE USED230V 115VP85 General Assembly WHERE USED230V 115VP85/3 General Assembly WHERE USED230V 115VP85/3 General Assembly WHERE USED230V 115V

PHONO PCB

SHEET 2 of 1

X PRINTED CIRCUIT BOARD

*********************** Additions Since Last Issue ************************

PPRO 1N0 5% 63V

PRINTED CIRCUIT

BOARD

*********************** Deletions Since Last Issue ************************

PPRO W 470P 63V

C114

C214

L870PB_1

* Additions Since Last Issue **

* Deletions Since Last Issue **