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TROUBLESHOOTING GUIDE Appendix
4. CH DON’T MEMORY or SKIP
(g)
33V 5V
Check 5V/33V LINE
U101
Check Composite Video Signal
TUNER
CVBS
T-DATA T-CLOCK
Check T-SDA/SCL
#27 #28 #61
#29
SDA #4
#30
SCL #3
#10 #11
#12
SDA
X701
32.768KHz ST-BY 5V
SCL
Check the crystal
#5 #6
Check SDA/SCL
#8
ST-BY 5V
Check the input signal conditions
I701
NG : Loss of signal or weak signal
OK : Go to the figure (g)
MICOM
I501
VDP
I703 EEPROM