Onkyo TXDS 474 Service Manual

Page 1

TX-DS474

Ref. No. 3615
ONKYO® SERVICE MANUAL
AUDIO VIDEO
CONTROL
RECEIVER
MODEL TX-DS474
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\w/j
O Q I
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Black, Silver, and Golden models Black and Golden models
BMD 120V AC. 60HZ BMPT, GMFI 230-240V AC 50HZ
:3:ng BMPA 230240v AC 50Hz :m' BMWR GMWF' 120/220v AC, 50/60Hz
BMWT, BMWR, GMWT. .
GMWR 120/ 220V AC, 50/ 60Hz
SAFETY-RELATED COMPONENT WARNINGII TABLE OF CONTENTS
COMPONENTS IDENTIFIED BY MARK A ON Specifications 2
THE SCHEMATIC DIAGRAM AND IN THE PARTS Service proceé;;e' 3
LIST ARE CRITICAL FOR RISK OF FIRE AND Microprocessur connection diagram TXvDS474. 4
ELECTRIC SHOCK. REPLACE THESE COM- Microprocessor Ierminaldcscripiion TX7[)SA74 5

PONENTS WITH ONKYO PARTS WHOSE PARTS

NUMBERS APPEAR AS SHOWN IN THIS MANUAL. - A
Panel view TXADS474 ..............................................................................

MAKE LEAKAGEvCURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT Block diagram Tuner seclion .................................................................... 12
EXPOSED PARTS ARE ACCEPTABLY IN-

SULATED FROM THE SUPPLY CIRCUIT BEFORE Pc.b°a'd""s STXDSW ' 19
Adjustmeni procedures 24
RETURNING THE APPLIANCE TO THE [C block diagram .... 27
CUSTOMER Wiring view TX-DSA74.. 31
Block diagram Amp. seciion .................................................................... 35
Schematic diagram .................................................................................... 39
Exploded View TX-DS474.. 6]
Fans list TX»DS474...I 63

ONKYO Packing View TX-DS474 ......................................................................... 69
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