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وهذة هى مجموعة اعطال هذا الشاسية

NO SOUND /
PICTURE OK
OK
Check R,G,B signal
at IC501 pin51,52,53
OK
Not OK
Check the
Heater pulse of FBT
T401
Not OK
Check
FBT T401
WIRING DIAGRAM
CPT PWB
P902
1
" C "
" A "
POINT
P802
P601
SPK(L)
1
P541
MAIN PWB
1. CONNECTOR LEAD
"A" POINT : P541, P301, P302, CPT EARTH,
JW1, FOCUS & SCREEN LEAD
TWISTER HOLDER
"B" POINT : TWISTER HOLDER
"C" POINT : D-COIL HOLDER SPEAKER(L)
LEAD
"D" POINT : SPEAKER(L) LEAD & D-COIL
P802 D-COIL HOLDER 1
,JW2
NO SOUND / PICTURE OK
MONO
Select correct system
in menu
OK
Check the waveform
at pin 44 of IC01
Check the waveform
at pin 35 of IC501
NO
OK
NO Check the waveform
at pin 1 of IC601 Check/Replace Q621
OK
NO Check the waveform
at pin 4 of IC601
Check/Replace IC601
OK
NO Check/Replace
FR803,D804
Check the voltage
at pin 5 of IC601
RF STEREO
Select correct system
in menu
OK
NO Check / Replace
TU101
Check the waveform
at pin 16 of TU101
OK
NO Check the waveform
at pin 24,25 of IC661
Check the voltage
at pin 16,33,46 of IC661
OK
NO Check the waveform
at pin 4,12 of IC602
Check/Replace
Q671,Q672
OK
NO Check/Replace
Q621,IC603
Check the voltage
at pin 6,7 of IC602
OK
Check the waveform
at pin 1,2,14,15 of IC602
OK
NO Check the voltage
at pin 3,13 of IC602
Check/Replace
F811,D824
" B "
POINT
P801
BN
JW1
BL
P602
SPK(R)
P301
P01A
P302 JW2
SPK(L)
3
" D "
POINT
POWER CORD
Check the waveform
at pin 4 of IC651
NO
NO
Check the waveform
at pin 2,7 of IC651
NO
Check the waveform
at pin28 IC01 NO
OK
Check/Replace
IC01
Check / Replace
IC651
NO Check the voltage
at pin1 of IC131
NO
Check/Replace
IC131,IC661
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