TROUBLESHOOTING GUIDE

Appendix

4. CH DON’T MEMORY or SKIP

Check The Iutput Signal Conditions

NG : Loss of Signal or Weak Signal

OK : Go To The Figure (E)

(E)

 

 

 

 

 

 

TU101

 

33V

 

CHECK

TUNER

 

CHECK

 

 

 

 

THE

CLOCK,DATA

IF

 

5V

VOLTAGE

 

 

 

 

 

 

 

Z101

 

 

 

I702

 

SAW FILTER

 

 

EEPROM

 

 

SIF

 

 

 

 

 

 

 

#8

#5,6

 

 

 

 

STB

SCL/SD

VIF

 

 

 

 

 

 

 

 

 

 

 

 

CHECK THE

 

#28,29

#33

 

 

 

 

 

 

 

VOLTAGE

 

 

 

 

 

 

#7,8

I701

 

 

 

 

 

 

#22,43,45,63,80

 

5V

 

#18,19

 

#9,16,86,88

 

3.3V

CHECK THE

X701

 

 

 

CRYSTAL

 

 

 

 

 

24.576MHz

 

CHECK THE

 

 

 

 

 

 

 

 

VOLTAGE

 

 

-33-

 

 

 

Page 34
Image 34
Daewoo DTH-2930SSFV, CM-405F service manual Check Tuner CLOCK,DATA Voltage