Marantz AV7701 Service Manual page 93

A
Input
CVBS,COMPONENT
Is the power supply voltage
correctly output?
V+5V : CN52B-6pin
V-5V : CN52B-8pin
(SIDE_CNT B'D)
YES
Check on set value of each IC.
Is they the following voltage
values?
VSDA : T10
VSCL : T9
Refer to 94 page.
(HDMI B'D)
YES
Is the signal input to video
decoder (IC121)?
<Input signal>
V : R1243
COMPONENT(Y) : R1245
COMPONENT(Cb) : R1244
COMPONENT(Cr) : R1246
(HDMI B'D)
YES
Monitor Out (V/COMPONENT)
VIDEO B'D flaw.
V/COMPONENT : B- w
HDMI Out
To Troubleshooting "3.HDMI/
DVI" (Refer to 97 page.)
REGULATOR B'D flaw.
NO
VIDEO B'D and REGULATOR
B'D and connection of the wire
are defective.
NO
HDMI B'D flaw.
FRONT CONNECTOR B'D flaw
or defective connection of the
connector.
NO
The parts between
CONNETOR(CN21B) and IC121
are defective
VIDEO B'D flaw.
V/COMPONENT : B- q
93