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:'13/Dec
4. SOUND IS NOT REPRODUCED/ REPRODUCED SOUND ABNORMALITY
Is the audio set to MUTE or sound volume too low?
No
Is same source selected for input selection and audio
signal input?
Yes
Check the audio input signal for any abnormality as listed
below:
- Cable connection
- Audio cable
No abnormality found.
Check the audio output cable for any abnormality as listed
below:
- Cable connection
- Audio cable
No abnormality found.
- Check the embedded speakers and the related parts
listed below for any abnormality:
- Speaker cable
- Speaker
No abnormality found.
- Check the Main I/F PWB and the related parts listed
below for any abnormality:
- Connection cable
- Fuses F3200, F3201, F3202 (Are they blown out?)
- RS232C communication (Is it capable of communicating
using RS232C?)
- Main I/F PWB
5. CANNOT CONTROL RS-232C CONNECTION
Is the setting set to LAN control?
No
Are the RS-232C settings available on display (as shown
below) set properly?
- Baud rate
- Data length
- Parity
- Stop bit
- Flow control
Yes
Are the RS-232C settings available on PC set properly?
Yes
Any defect with the RS-232C cable?
No defect found.
Any defect with the cable connection (IN/OUT) ?
No defect found.
Are there proper number of units connected? (Max. 25
units)
Yes
- Check the Main I/F PWB and the related parts listed
below for any abnormality:
- Connection cable
- PWB
Yes
No
Abnormality found.
Abnormality found.
Abnormality found.
Abnormality found.
Yes
No
No
Defect found.
Defect found.
No
Abnormality found.
PN-K321/K322B TROUBLESHOOTING 7 - 3
Set or adjust the setting again.
Adjust the input source properly.
Replace the abnormal part.
Replace the abnormal part.
Replace the abnormal part.
Replace the abnormal part.
Replace the Main I/F PWB.
Change the setting to RS-232C control.
Correct the settings.
Correct the PC settings.
Replace the abnormal part.
Replace the abnormal part.
Check the number of unit connected (Max. 25
units)
Replace the abnormal part.
Replace the Main I/F PWB.
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