15
TROUBLE SHOOTING
Is click sound
of Relay heard?
Are 2 Green LEDs
turned OFF at the
same time?
IC101,DS101,C105,
PC102,ZD101,T101 etc.
Check
Check
Check
No
Raster
Is Voltage at
pin(1) of IP01
more than 1.3V?
Has Fuse FP01
blown?
RP03, RP04,
RP05, RP06
YES
YES
YES
YES
NO
Is base Voltage
Of Q709 normal?
Does raster
Appear with (47) and (44)
Of PPS1 shorted?
Are Voltages
At both ends of T702
(primary side)
normal?
IY04 pin(37)
-H out,
IY04 pin(31)
I2L_Vdd
etc.
T702, R748,
R730
etc.
Q777, QH01,
T701, TH02
etc.
NO
NO
YES
YES
Is Voltage
at pin(16) of I004
3.3V?
Is Voltage
at pin(59) of I004
“H”?
Q018, Q021,
etc.
Replace U901
Check
Check
Check
Check
Check
IP01, QP01,
QP02, RP11,
RP12, RP13
etc.
Replace FP01
Check
I004
Check
YES
YES
Check
I013, I004
YES
Check
Find LED(s) that is
Turned dark or OFF
Earlier than the other.
(1) No raster and no power (How to check LED’s Diagnosis)
(Power Supply Unit)
(Power Supply Unit)
(Signal PWB)
(Signal PWB)
(Signal PWB)
(Pow Def PWB)
(Pow Def PWB)
(Pow Def PWB)
(Power Supply Unit)
(Pow Def PWB)
(Pow Def PWB)
Is Voltage
at pin(13) of PPS1
5.2V?
SW+28/-28V
line
EP01, EK01,
DP30, DP31,
DP50
etc.
SW+115V line
EP02, DP40,
DP34, Q777,
QH01, Q701,
TH02, T701
etc.
Replace U901
(Pow Def PWB)
NO
NO
NO
YES
NO
NO
NO
NO
1.Turn OFF
the power SW.
2.Wait for 3 seconds.
3.Turn ON again after
several seconds, and
observe green LEDs
carefully.
Summary of Contents for C43-FD7000
Page 72: ...72 SERVICE ADJUSTMENTS SIGNAL SUB P W B IG02 IG03 IG04 IQ01 IQ02 IR01 Rear view IG01 I R 0 2 ...
Page 78: ...78 EXPLODED VIEW ...
Page 79: ...79 EXPLODED VIEW ...
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Page 170: ...SIGNAL SIDE A P W B ...
Page 171: ...SIGNAL SIDE B P W B ...
Page 172: ...SIGNAL SUB SIDE A P W B ...
Page 173: ...SIGNAL SUB SIDE B P W B ...
Page 174: ...TUNER SIDE A P W B ...
Page 175: ...TUNER SIDE B P W B ...
Page 176: ...AUTO POWER AV INPUT CONVER SENSOR SW P W B ...
Page 177: ...CPT CONTROL AV NET LED P W B ...
Page 178: ...POWDEF P W B ...
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