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TUNER PACK TROUBLESHOOTING
Check the PLL- of CE, DI, DO, CLK.
Is the normal ?
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
Check the Deck Mecha.
- 2-12 -
Refer to "Power Circuit
Troubleshooting".
NO
YES
Replace the IC201.
Replace the Deck
Mecha.
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