Sony KE-37XS910 / KE-42XS910 / KE-MX37A1 / KE-MX37N1 / KE-MX37S1 Service Manual ▷ View online
– 37 –
LOGIC board is
defective.
PSU board
Vcc (5V) exists?
N
Y
ABUSR board
CN42(1)-(4) pins or
CN42(5)-(7) pins
are shorted.
CN42(5)-(7) pins
are shorted.
Y
Remove ADM from the
following (4) connectors.
CN 43
CN 44
CN 45
CN 46
ADM is defective
(Panel chassis is
defective.)
ABUSR board is
defective.
N
Y
Turn on AC power.
Turn on the Jig
PDP go switch.
End of analysis
Turn off the AC
power.
End of analysis
Control logic power system has short-circuit.
Power supply circuit has short-circuit.
ADM chip/Flexible shorted
* Refer to Chapter 5.5for
ADM removal. procedure.
ABUSR board
CN42 (1)-(4) pins or
CN42 (5)-(7) pins
are shorted.
CN42 (5)-(7) pins
are shorted.
N
CN42
(1): Va
(4): GND
(5): GND
(7) : Vcc
3
2
– 38 –
PSU board
Vcc (5V) exists ?
Y
Turn off the AC power.
Remove ADM 1 – 8
Turn off the AC power.
Connect CN 52(ABUSL).
Turn on AC power.
PSU board
Vcc (5V) exists ?
ABUSL board is
defective.
Turn off the AC power.
Connect CN 42(ABUSR).
Turn on AC power.
Y
PSU board
Vcc (5V) exists ?
ABUSR board is
defective.
N
Turn off the AC power.
Connect CN 23(X-SUS).
Turn on AC power.
PSU board
Vcc (5V) exists ?
X-SUS board is
defective.
Turn off the AC power.
Connect CN 33(Y-SUS).
Turn on AC power.
Y
N
Y-SUS board is
defective.
Turn off the AC power.
End of analysis
N
Logic buffer circuit has abnormality.
Y
N
Logic buffer circuit has abnormality.
DC/DC power supply circuit or control
logic circuit has abnormality.
logic circuit has abnormality.
DC/DC power supply circuit or control
logic circuit has abnormality.
logic circuit has abnormality.
3
4
– 39 –
Turn on AC power.
PSU board
Va (63) exists ?
Y
N
Turn off the AC power.
ABUSR board
Disconnect connector CN42.
Turn on AC power.
PSU board
ABUSR board
is defective.
Y
N
Turn off the AC power.
ABUSL board
Disconnect connector CN52.
Turn on AC power.
PSU board
Va (63) exists ?
ABUSR board
is defective.
Y
N
End of analysis
Turn off the AC. power
ADM chip operation is abnormal.
Power supply system (capacitor, etc.,)
has abnormality.
has abnormality.
4
5
ADM is defective
(Panel chassis is
(Panel chassis is
defective.)
Power supply system
(capacitor, etc.,)
has abnormality.
(capacitor, etc.,)
has abnormality.
– 40 –
SDM power
supply line is
shorted.
Connect SDM/Y-SUS board
Disconnect connector.
Turn off the AC power.
Measure resistance of SDM power line
(Between A1-A2 , B1-B2, C1-C2 and
D1-D2.)
PSU board
Vs(85V) exists?
PSU board
(Vs block) is defective.
(Panel chassis is defective.)
Y
N
Turn off the AC.
power
End of analysis
Y
5
6
SDM is faulty.
(Panel chassis is defective.)
Turn off the AC
power.
PSU board Vs
/Vccis output
Turn on AC power.
Y
N
N
Turn off the AC
power.
SDM chip is shorted.
B1
A1
A2
B2 C1 C2 D1 D2
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