Denon RCD-N9 Service Manual page 38

Check control signal for DIR.
MAIN PCB
•[IC22]： 23, 24, 25, 26pin
DIR_DO, DIR_DI, DIR_CLK, DIR_CE
Check control signal for PWM CONTROLLER.
MAIN PCB
•[IC23]： 20, 21pin
SDA, SCL
•[IC23]： 16, 18, 19pin
RESET, PDN, MUTE
"Hi" level OK.?
2.3. CD PLAY BACK
Check Power Supply Voltages for CD
CD PCB
•[CN81]：4pin +12V_D
•[IC80]：IN +12V_D / OUT：+8VM
•[CN81]：2pin +3.3V
Check Power Supply Voltages for CD
CD PCB
•[IC84]：2pin 1.5V OK?
Check Reset signal for CD.
CD PCB
•[IC83]：69pin / RST "Hi" level O.K.?
Check Oscillation waveform.
CD PCB
•[IC83]： 49pin XO
16.9344MHz OK?
Check Digital Audio Data for CODEC.
MAIN PCB
•[IC22]：37pin CD_SPDIF
OK
END
OK
OK
OK
OK
OK
END
Check the solder and replace any faulty parts.
NG
•[IC28]： 86, 87, 88, 89pin → [IC22]：23, 24, 25, 26pin
DIR_DO, DIR_DI, DIR_CLK, DIR_CE
Check the solder and replace any faulty parts.
NG
•[IC28]： 82, 83pin
SDA, SCL on MAIN PCB
•[IC23]： 77, 79, 80pin A_PWM_RST, A_PWM_PDN, A_
PWM_MUTE on MAIN PCB
Check the solder and replace any faulty parts.
NG
CD PCB
•[CN81], [IC75]
•SMPS PCB
NG
Check the solder and replace any faulty parts.
•[IC84] on CD PCB
NG
Check the solder and replace any faulty parts.
•[IC28]：115pin DECRST on MAIN PCB
NG
Check the solder and replace any faulty parts.
•[X800] on CD PCB
Check the solder and replace any faulty parts.
NG
•[IC83]：33pin CD_SPDIF on CD PCB
•[IC22]：37pin CD_SPDIF on MAIN PCB
•[WF80]：19pin CD_SPDIF
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