PDP-507CMX
95
5678
56
7
8
C
D
F
A
B
E
P12 CN304 (pin 1)
PV CN306 (pins 3 and 4)
P8 CN302 (pin 1)
Trouble shooting of the A+6.5V output abnormal operation
This voltage Line is supplied to MAIN Assy from MAIN POWER SUPPLY Unit via DD Assy.
Please check board to board connection first if A+6.5V is abnormal.
e.g.) pin contact of connector, short between wire
From POWER SUPPLY unit
From POWER SUPPLY unit
DD ASSY
To MAIN ASSY
Failure analysis for the
SLOT power supply
Yes
Yes
Are 12V supplied to pins 1 and 2
of CN4001?
Failure in the DD Assy or harness
ADX3435
Failure in the DD Assy, POWER
SUPPLY Unit or harness
ADX3435
Are 16.5V supplied to pin 5 of
CN4001?
Are 13.5V output from pin 3 of
IC4003?
No
Yes
Failure in the DD Assy or harness
ADX3435
Are 3.3V supplied to pins 7 and 8
of CN4001?
No
Yes
Failure in the DD Assy, POWER
SUPPLY Unit or harness
ADX3435
Are 3.3V supplied to pin 11 of
CN4001?
Yes
Failure analysis for the Each
SLOT Input terminals
No
No
No
Failure in the IC4003
Flowchart of Failure Analysis for The SLOT Power Supply
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