Nokia RM-11 Series Troubleshooting Manual page 55
Baseband
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Also See for RM-11 Series:
- Troubleshooting manual (70 pages) ,
- Disassembly (6 pages) ,
- Service manual (5 pages)
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UI Modules
Keypad
faults,
page 2
Are UI modules keys
working?
YES
END
Issue 2 09/2005
Change keypads
module. Is it
NO
working?
Measure ROW0-4
(P10-P15) signals
between UPP and
X301. Are they
~1.8V?
Measure COL1-4
(P01-P04) signals
between UPP and
X302. Are they
~1.8V?
Make sure there are
no shorts on Z300. If
OK, change UPP
©2005 Nokia Corporation
Troubleshooting - Baseband
YES
NO
Make sure there are
no shorts on Z300. If
NO
YES
NO
YES
Confidential
RM-11
Retest
OK, change UPP
Change Z300
Page 55
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