When Checking The Pcb - Yamaha RX-V3900 Service Manual

When checking the P.C.B.s:
• Put the rubber sheet and the cloth over this unit.
Then place the D-VIDEO and A-VIDEO P.C.B.s up-
side down on the cloth and check them. (Fig. 7)
• Reconnect all cables (connectors) that have been
disconnected. Be sure to use the extension cable for
servicing for the following section.
FL (2) P.C.B. CB953–D-VIDEO P.C.B. CB710:
WM785100 (20P, 300mm, P=1.0)
FUNCTION (1) P.C.B. CB410–A-VIDEO P.C.B.
CB203:
MF111300 (11P, 300mm, P=1.25)
FL (2) P.C.B. CB957–D-VIDEO P.C.B. CB102:
WQ724300 (37P, 340mm, P=1.0)
• When connecting the flexible flat cable, be careful
with polarity.
• Connect the ground point of each P.C.B. shown below
to the chassis with a ground lead or the like. (Fig. 7)
D-VIDEO P.C.B. GND
D-VIDEO P.C.B. CB704 (HDMI IN1)
A-VIDEO P.C.B. PJ204 (COMPONENT VIDEO)
Ground lead
CB102
WQ724300
Chassis
Ground lead
D-VIDEO P.C.B.
Ground lead
CB710
WM785100
CB957
CB953
FL (2) P.C.B.
Fig. 7
Ground point
D-VIDEO P.C.B.
A-VIDEO P.C.B.
CB203
MF111300
A-VIDEO P.C.B.
Rubber sheet and cloth
FUNCTION (1) P.C.B.
CB410
RX-V3900/DSP-AX3900
Ground lead
Rear panel
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