Pioneer AVIC-N2 Service Manual page 253

5
4. Microphone & Gain control check
• The voice channel is inspected by recording the voice from MIC input (Lch) on a memory, playing back the
recorded data and outputting from the SP.
• Recording of MIC input voice and playback of the recorded data is done at every second. ("1 second recording
1 second playback" will be repeated during inspection.) "REC" and "PLAY" will be displayed on the screen during
recording and play back, respectively.
• Voice channel
MIC voice input ADC Lch input
Play back of recorded voice data
• Operation (remote controller)
[ ] : MIC input gain (PROGGAIN0-2) is lowered.
[ ] : MIC input gain (PROGGAIN0-2) is increased.
[NAVI] : Muting of ONSEIMUTE signal is switched between ON and OFF by a toggle switch.
[ ] : Move on to the next inspection.
5. Data Communication (Short Circuit) check (Not for service)
• SIO connection short is checked.
• Loop back check is performed on 5CH and 7CH.
• Wait screen is displayed until the checking is completed.
• When [RETURN] key on the remote controller is pressed while the inspection result is being displayed on the
screen, inspection will be performed once again.
• Only in the case of OK, you can move on to the next inspection by the [ ] key on the remote controller.
5
6
4. Microphone & Gain control check
Gain level(0-7) 7
REC
[->] raise gain
[<-] lower gain
[joy stick down] It progresses to the next inspection.
ASIC voice block
ASIC voice block
5. Data Communication (Short Circuit) check
Serial I/O #5(for Extension)
Serial I/O #7(for Debug)
[joy stick down] It progresses to the next inspection.
AVIC-N2/XU/UC
6
7
Data storage (recorded on the memory)
DAC Lch output SP output
OK
OK
7
8
A
B
C
D
E
F
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