Onkyo TX 37 Service Manual

Page 1

SERIAL NO. 3199

ONKYO SERVICE MANUAL

QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODEL TX-37

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Silver and black models

UD, UDN, BUD. BUDN l20V AC, 60Hz

UG, BUG 220V AC, 50Hz
SAFETY-RELATED COMPONENT WARNING TABLE OF CONTENTS
COMPONENTS IDENTIFIED BY MARK ,1. ON Specifications ............................. 2
THE SCHEMATIC DIAGRAM AND IN THE PARTS Service procedures ......................... 3
LIST ARE CRITICAL FOR RISK OF FIRE AND Block diagram
ELECTRIC SHOCK. REPLACE THESE (OMPO- Amplifier section ........................... 4
NLNTS WITH ONKYO PARTS WHOSE PARTS Power supply section ........................ 5
NUMBERS APPEAR AS SHOWN IN THIS MANUAL. Dynamic bass circuit ................... 5
Tuner section vl20V- .................. 6
MAKI: LEAKAGE-CURRENT OR RESISTANCE Tuner section -220V- .................. 7
MEASUREMENTS TO DETERMINE THAT EX- Exploded view ............................ 8
POSED PARTS ARE AICEPTABLY INSULATED Parts list ................................ 9
FROM THE SUPPLY CIRCUIT BEFORE RETURN Circuit description .................... 10
INC THE APPLIANCE TO THE CUSTOMER. Adjustment procedures ...................... 15
Pcb view/list
Tuner section ............................ 17
Digital section ............................ 2i
Amplifier section .......................... 25
Control section ........................... 29
Schematic diagram
Tuner section 120V model ................... l9
Tuner section 220V model ................. 23
Amp. section 120V model .................. 27
Amp. section 220V model ............... 31

Block diagram of 1C ........................ 33
Packing View ............................. 34