Onkyo A-8850 Service Manual

A-8850_ |
ONKYO.
SERVICE
MANUAL
Integrated Stereo Amplifier
MODEL A-8850
Black and silver models
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK A ON THE
SCHEMATIC DIAGRAM AND IN THEPARTS LIST ARE CRITI-
CAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE
THESE COMPONENTS WITH ONKYO PARTS WHOSE PARTS
NUMBERS APPEAR AS SHOWN IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE MEASURE-
MENTS TO DETERMINE THAT EXPOSED PARTS ARE AC-
CEPTABLY INSULATED FROM THE SUPPLY CIRCUIT
BEFORE RETURNING THE APPLIANCE TO THE CUS-
TOMER.
Ref. No. 3405
TABLE OF CONTENTS
Specifications sci. cet andthe sa aaa aes Sele 2
PIECAULIONS fii es Rese ees Loe dae WR eat cs Bees 2
Adjustment procedures ....... 0.20 cece cece teen tees 3
IC block diagram.’ jai. pes sce vie aS a eas ee ee eS 4
Block: diaerain: .000i:2 cycacg ete aia. Bese wade eee es GS 7
Chassis exploded view ...... 0... c cece eee eee tenes 9
Printed circuit board parts list... 2.6... cece eee ee 12
Printed circuit board view ......... 00. c cece eee eee 16
Schematic diagram ...... 0.0... ccc tee tees 21
Packing: part MSt. 26 vis eee tees Face iin ayd a aes Cas 24
Front panel facilities 2.0.0... ee eee 25
System CONNECTIONS 2.0... een tne tee 25
ONKYO
AUDIO COMPONENTS

Onkyo A-8850 Specifications

General

Input Sensitivity (MM)	2.5 mV
Total Harmonic Distortion	0.008%
Input Sensitivity	150 mV (line in)
Dimensions	435 x 171 x 398mm (W x H x D)
Damping Factor	50
Signal to Noise Ratio (MM)	80 dB
Speaker Load Impedance	4 ohms minimum
Speaker Impedance	4Ω-16Ω
Tone Control	Bass, Treble