When Checking The Amp Unit - Yamaha RX-V1700 Service Manual

When checking the Amp Unit:

• Place the sub chassis unit on top of the rubber sheet
and cloth. (Fig. 10)
• Put the amp unit together with the heat sink upright
and check. (Fig. 10)
• Reconnect all cables (connectors) that have been dis-
connected. Be sure to use the extension cable before
servicing the following section.
FL (1) P.C.B. CB901_FL (2) P.C.B. CB970:
MF126500 (26P, 500mm)
FL (2) P.C.B. CB971_OPERATION (2) P.C.B. CB803:
MF115500 (15P, 500mm)
FL (1) P.C.B. W9001_POWER (1) P.C.B. CB12:
MF405400 (5P, 400mm)
• When connecting the flexible flat cable, be careful
with polarity.
• In main unit, the ground of sub chassis unit and amp
unit is connected to the main unit. When this sub
chassis unit and amp unit are removed from main unit,
connect the ground to the main unit, using a ground
lead or such. (Fig. 10)
Ground lead
POWER (1) P.C.B.
MAIN (1) P.C.B.
Sub chassis unit
Rubber sheet and cloth
W9001
FL (1) P.C.B.
MF405400
CB12
CB901
OPERATION (2) P.C.B.
Fig. 10
Amp unit
CB970
MF126500
MF115500
CB803
RX-V1700/DSP-AX1700
Ground lead
FL (2) P.C.B.
CB971
17