- 2-18 -
TUNER PACK TROUBLESHOOTING
Check the PLL- of CE, DI, DO, CLK
Is the normal ?
END
CE: Chip Enable
DI: Data Input(from u-com)
DO: Data Output(to u-com)
CLK: Tuner mode clock
Replace the TUNER PACK
YES
NO
TUNER PACK POWER TROUBLESHOOTING
Check the +9V of OPN602 pin2
Check the +DC C670
Check the pattern
Refer to “Power circuit
Troubleshooting”
Check the GND of PN602 pin4, 10
END
YES
YES
YES
NO
NO
PLAY
Check the VCC supplying to IC201 pin4
Refer to “Power Circuit
Troubleshooting”
Check the Deck Mecha
Replace the Deck
Mecha.
Replace the IC201
Check the signal output of IC201 pin3, 6
Check the “LOW” of Q201, Q251, “B”
YES
YES
YES
NO
NO
NO
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