LG FFH-M217X Service Manual page 14

TUNER PACK TROUBLESHOOTING
Check the PLL- of CE, DI, DO, CLK
Is the normal ?
YES
END
TUNER PACK POWER TROUBLESHOOTING
Check the +9V of TU601 pin2
YES
Check the GND of TU601 pin4, 10
YES
END
PLAY
Check the VCC supplying to IC201 pin4
YES
Check the signal output of IC201 pin3, 6
YES
Check the "LOW" of Q201, Q251, "B"
CE: Chip Enable
DI: Data Input(from u-com)
DO: Data Output(to u-com)
CLK: Tuner mode clock
NO
Replace the TUNER PACK
NO
NO
NO
Check the Deck Mecha
- 2-7 -
Check the +DC C670
NO
YES
Check the pattern
Refer to "Power Circuit
Troubleshooting"
NO
YES
Replace the IC201
Refer to "Power circuit
Troubleshooting"
Replace the Deck
Mecha.