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B
Input
CVBS
q
Check the set value of each
IC. Are the voltage values as
follows?
DIGITAL PCB
BN21A - 6pin
BN21A - 7pin
BN21A - 9pin
YES
w
Use the jigs to extend the
DIGITAL PCB.
e
Is the power supply voltage
being output correctly?
V+5V :
C5107 : + side
V-5V :
C5109 : - side
YES
r
Is a signal being output from
the video amplifier?
CVBS :
J5003
YES
The circuit between IC511
and JK511 are faulty.
NO
The DIGITAL PCB is faulty.
: Hi(3.3V)
: Hi(3.3V)
: Lo(0V)
NO
Check the connection between the
SIDE CONNECTOR PCB and the
VIDEO PCB.
•Check the IC511 power supply volt-
NO
age and check the soldering of the
surrounding circuits.
•The circuit between IC511 and
JK511 are faulty.
All parts are VIDEO PCB parts unless otherwise specified.
b
92
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