Sony KE-32TS2E / KE-32TS2U Service Manual ▷ View online
-38-
Turn off the AC power.
Connect Y-SUS board.
Disconnect connector CN33.
Turn on AC power
Connect SDM/Y-SUS board
Disconnect connector.
Turn off the AC power.
Measure resistance of SDM power line
(Between A1-A2 and B1-B2.)
PSU board
Vs(80V) exists?
PSU board
(Vsa block) is
defective.
(Panel chassis is
defective.)
Y
N
PSU board
Vs (80V) exists?
Y-SUS board
(reset block) is defective.
N
Turn off the AC. power
End of analysis
Y
5
6
B1
A1
B2
A2
-39-
SDM power supply
line is shorted.
SDM is faulty.
(Panel chassis is
defective.)
Turn off the AC
power.
End of analysis
PSU board Vs
/Vccis output
Turn on AC power.
Disconnect connection from
XBB/X-SUS board.
Measure resistance of XBB line.
(Between A1-B1)
XBB line has
short-circuit.
XBB is faulty
(Panel chassis is
defective.)
Y
Y
N
N
X-SUS board
is defective.
N
Turn off the AC
power.
Y
Y-SUS board
is defective.
SDM ship is shorted.
6
X-SUS board
is defective.
A1
B1
-40-
4. 6. 2 "Vertical line/Vertical bar" problem analysis procedure
One vertical line?
Turn on the main power.
Any changes?
ADM flexible has abnormal
appearance?
ADM is defective.
(Panel chassis is
defective.)
Signal cable is
defective.
Y
Heat-melted junction is
defective (Panel chassis
is defective.)
Y
N
N
Panel address has open circuit or
ADM IC chip is defective.(Panel
ADM IC chip is defective.(Panel
chassis is defective.)
End of analysis
End of analysis
Turn off the main
power.
Y
Y
N
N
Vertical line/Vertical bar
Tap lightly on ADM flexible
heat-melted junction.
LOGIC ~ ABUS board signal cable has
abnormal appearance?
1
-41-
Turn off the main power.
Bar of 3/7 width on the
left does not light?
Y
Turn off the main power.
Disconnect CN52 from ABUSL board.
Turn on the main power.
PSU cable is defective.
Connector has poor
connection
(LOGIC board is
defective.)
ABUSL board is defective.
Voltage exists at
ABUSL board CN 52.
LOGIC board is
defective.
N
Y
Bar of 4/7 width
in right does not light?
Y
Turn off the main power.
Disconnect CN42 from ABUSL board.
Turn on the main power.
Voltage exists at
CN42 of PSU Side?
PSU cable is defective. Connector has
poor connection.
(PSU board is defective.)
ABUSR board is defective.
LOGIC board is
defective.
N
Y
N
End of analysis
N
Y
N
Y
N
1
Voltage exists at
CN52 of PSU Side?
Voltage exists at
ABUSR board CN42?
2
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