Onkyo TX 870 Service Manual
This is the 31 pages manual for Onkyo TX 870 Service Manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from Onkyo TX 870 Service Manual (Ocr-read)
Page 1
SERIAL NO. 3311
ONKYO SERVICE MANUAL
QUARTZ SYNTHESIZED
TUNER AMPLIFIER
MODELS TX-870/TX-870M
BHUD,BHUDN.MBHUDN IZOV AC,60HZ
MBHUWX lZOJZZOV AC, SO/GOHZ
SAFETY-RELATED COMPONENT WARNING TABLE OF CONTENTS
COMPONENTS IDENTIFIED BY MARK A ON
THE SCHEMATIC DIAGRAM AND IN THE PARTS Specifications ....................... 2
LIST ARE CRITICAL FOR RISK OF FIRE AND
s w d - .................... 3
ELECTRIC SHOCK. REPLACE THESE COMPO 5 7 I 4
NENTS WITH ONKYO PARTS WHOSE PART KP Ed 6W """""""""""""""
NUMBERS APPEAR AS SHOWN IN THIS Parts 1151 ---------------------- 5
MANUAL. Block diagramATuner section --------------- 6
Block diagram-Amplifier section -------------- 7
MAKE LEAKAGE CURRENT 0R RESISTANCE IC block dIa ram and descri lions IIIIIIIIIII 8
MEASUREMENTS TO DETERMINE THAT EXPOSED . g p
PARTS ARE ACCEPTABLY INSULATED FROM AdJUS'mem Procedures ----------------- - 18
THE SUPPLY CIRCUIT BEFORE RETURNING PC board View/parts lisI ----------------- 2]
THE APPLIANCE TO THE CUSTOMER. FM/AM {uney .................... 21
Display/Operation swiIch ---------------- 23
Pre. and power amplifier ---------------- 25
Tone control ..................... 23
Power Supply ..................... 29
Volume/Volume indicator --------------- 30
Packing view ....................... 3]
ONKYO
AIIIIIII BflMPIIIIIIIIS
Page 4
EXPLODED VIEW