Buzzer Does Not Work; Keyboard Does Not Work - Nokia NKC-1X Series Troubleshooting Instructions

NKC-1X
Troubleshooting Instructions

Buzzer does not work

Check spring connectors and C306.
• No sound: Try using a known good buzzer instead. If there is still no sound,
change the UEM (D200)
• Weak sound: Use the Audio test in Phoenix to set the buzzer parameters (fre-
quency, strength). If it does not effect the sound level, change the buzzer.

Keyboard does not work

Check that there is no dirt between the dome sheet and the PWB. Check EMI/ESD filter
Z301 that all lines come through. If not, change Z301. If the keyboard still does not oper-
ate normally, try to use the Keyboard test in Phoenix to see if the pressed key is identi-
fied. If it is not identified, change the UPP(D400).
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Nokia Corporation
CCS Technical Documentation
Issue 1 02/03