File name Denon-AVR1604-684 rec.pdfFor U.S.A., Canada, Europe, U.K.,
Asia, China,Taiwan R.O.C., Korea
& Japan model
SERVICE MANUAL
MODEL AVR-1604/684
AVC-1580
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
X0174V.02 DE/CDM 0311
AVR1604/684 / AVC-1580 2
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-1604/684 / AVC-1580 3
-
3
AVR-1604/684 / AVC-1580 4
LEVEL DIAGRAMS
FRONT/CENTR/SURROUND/SURROUND BACK
INPUT
A/D IN A/D IN D/A OUT SW SUM ELECTRIC
BUFFER REV AMP TONE PRE AMP POWER AMP
REV AMP REV AMP LPF REV AMP VOLUME
AMP
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