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For U.S.A. & Canada model
Ver. 1
SERVICE MANUAL
MODEL AVR-2805/985
AVC-2890
AV SURROUND RECEIVER/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.
16-11, YUSHIMA 3-CHOME, BUNKYO-KU, TOKYO 113-0034 JAPAN
X0199 V.01 DE/CDM 0404
AVR-2805/985/AVC-2890
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-2805/985/AVC-2890
WIRE ARRANGEMENT
If wire bundles are untied or moved to perform adjustment or
parts replacement etc., be sure to rearrange them neatly as
they were originally bundled or placed afterward.
Otherwise, incorrect arrangement can be a cause of noise
generation.
Wire arrangement viewed from the top
3
AVR-2805/985/AVC-2890
CAUTION IN SERVICING
Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed
when the