Service Guide
Service Guide Service Guide
3. NO SOUND Check audil output signal of I501 #8 NG : Go to the figure E OK : Go to the figure F E SF102 SAW FILTER 33V 5V U101 TUNER SCL SDA #2 #3 #8 #9 #12 Check SIF input signal Check IF AGC voltage #13 I701 MICOM #50 #51 #14 Check clock/data signal I501 #6 Check Audio output signal X701 4MHz Check the crystal F Check Vcc of the Sound AMP Check Audio output signal SOUND B+ 16V #1 #2 C606 SPEAKER 3W 8ohm Audio IN C602 #4 I601 TDA7267A #3 R612 C601 Q601 RC610 MICOM #42 Audio MUTE H:Mute L:Normal Check Audio signal in Check H:Mute L:Normal
4. NO COLOR composit video in #26 Check CVBS waveform Check R/G/B signal I501 #43 R OUT #44 B OUT Check the crystal #53 #45 G OUT X502 5. NO VERTICAL DEFLECTION Check the voltage (25V) Check Sawtooth voltage I501 #62 Vertical output MICOM #44 C305 VCC #6 #9 #2 #3 I301 #7 #10 D303 C306 25V Check vertical signal RC310 Inver Input #8 #3(Output) Vertical D.Y Check the waveform
- Page 1 and 2: Service Guide Colour Television CHA
- Page 3 and 4: PRODUCT SAFETY SERVICING GUIDELINES
- Page 5 and 6: SUBJECT : IMPLOSION 1. All direct v
- Page 7 and 8: ! "# " $ " "% $# $# $ && $ '
- Page 9 and 10: 6. GEOMETRY 6.1 VERTICAL CENTER 1)
- Page 11 and 12: ST92195B 32-64K ROM HCMOS MCU WITH
- Page 13 and 14: ST92195B - GENERAL INFORMATION GENE
- Page 15 and 16: ST92195B - GENERAL INFORMATION 1.2
- Page 17 and 18: 12/202 ST92195B - GENERAL INFORMATI
- Page 19 and 20: ST92195B - GENERAL INFORMATION 1.2.
- Page 21 and 22: ® STV223XD/223X/224X BUS CONTROLLE
- Page 23 and 24: STV223XD/3X/4X Pin N° STV224X/8X S
- Page 25 and 26: STV223XD/3X/4X BLOCK DIAGRAM (STV22
- Page 27: 2. NO PICTURE Check the wave of I50
- Page 31 and 32: ! "" # $ % "" # %&! '
- Page 33 and 34: % " " '" " " '" % " " '" " " '" %
- Page 35 and 36: % *#+ %%# $ $#'%# % *#+ ! %%
- Page 37 and 38: Mechanical Exploded View 11 1
- Page 39 and 40: Alignment Instructions SVC v0 R BIA
- Page 41 and 42: Electrical Parts List LOC PART CODE
- Page 43: Video Audio
3. NO SOUND<br />
Check audil output signal of I501 #8<br />
NG : Go to the figure E<br />
OK : Go to the figure F<br />
E<br />
SF102<br />
SAW FILTER<br />
33V<br />
5V<br />
U101<br />
TUNER<br />
SCL<br />
SDA<br />
#2<br />
#3<br />
#8 #9<br />
#12<br />
Check<br />
SIF input signal<br />
Check<br />
IF AGC voltage<br />
#13<br />
I701<br />
MICOM<br />
#50 #51<br />
#14<br />
Check<br />
clock/data signal<br />
I501<br />
#6<br />
Check<br />
Audio output signal<br />
X701<br />
4MHz<br />
Check<br />
the crystal<br />
F<br />
Check<br />
Vcc of the Sound AMP<br />
Check<br />
Audio output signal<br />
SOUND B+<br />
16V<br />
#1<br />
#2<br />
C606<br />
SPEAKER<br />
3W 8ohm<br />
Audio IN<br />
C602<br />
#4<br />
I601<br />
TDA7267A<br />
#3<br />
R612<br />
C601<br />
Q601<br />
RC610<br />
MICOM #42<br />
Audio MUTE<br />
H:Mute<br />
L:Normal<br />
Check<br />
Audio signal in<br />
Check<br />
H:Mute L:Normal
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