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Ver. 1
SERVICE MANUAL
MODEL AVR-1905/785
AV SURROUND RECEIVER

AVC-1590
AV SURROUND AMPLIFIER




For purposes of improvement, specifications and
design are subject to change without notice.



Please use this service manual with referring to the
operating instructions without fail.


Some illustrations using in this service manual are
slightly different from the actual set.




TOKYO ,JAPAN



X0214 V.01 DE/CDM 0407
AVR-1905/785 AVC-1590




SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.




500V


1M


(1)




(2)




(1)

(2)




2
AVR-1905/785 AVC-1590


DIMENSION




3
AVR-1905/785 AVC-1590


CAUTION IN SERVICING
Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed
when the