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For U.S.A., Canada, Europe,
Asia, Taiwan R.O.C., Korea
& Japan model



Ver. 1
SERVICE MANUAL
MODEL AVR-1906/786
AV SURROUND RECEIVER

AVC-1620
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
Denon Brand Company, D&M Holdings Inc.

X0239 V.01 DE/CDM 0506
AVR-1906 / AVR-786 / AVC-1620




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-1906 / AVR-786 / AVC-1620


DIMENSION




3
AVR-1906 / AVR-786 / AVC-1620


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