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(2)
ABUSD4 board
CND4-5 (1)-(7) or
CND4-5 (5)-(7)
short.
CND4-5
(1)(2): Va
(4)(5): Vcc
(6)(7): GND
Re-connect the following (4)
Power supply connectors.
CN21 (X-SUS)
CN31 (Y-SUS)
CNU4-5 (ABUS-U4)
CN24 (ABUS-D4)
Turn on AC power.
Turn on the PDP go switch on the
interface board jig.
PSU board
Vcc (5V) exist?
(3)
Y
Disconnect the following (3)
connectors.*
CND2-4(ABUS-D2)
N
CND3-5(ABUS-D3)
CND3-10(ABUS-D3)
Each ABUS-D* board
CND2-4 (1)-(7) or (5)-(7)
CND2-9 (1)-(7) or (5)-(7)
CND3-12 (1)-(7) or (5)-(7)
CND4-3 (1)-(7) or (5)-(7)
short.
N
Control logic power system has short-circuited.
Y
N
ADM chip/Flexible shorted
Y
Power supply circuit has short-circuited.
-27-
CND4－5
ADM is defective
(Panel chassis is
defective.)
ABUS-D* board is
defective.
End of analysis
LOGIC board is
defective.
Turn off the AC
power.
End of analysis
1pin
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