Ui Module Keys Working - Nokia RM-14 Baseband Troubleshooting And Manual Tuning
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Also See for RM-14:
- Rf troubleshooting and manual tuning (44 pages) ,
- Service software instructions (40 pages) ,
- Service tools and service concepts (20 pages)
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Tuning
UI module keys working
UI-module
keys working
Yes
End
End
36
Figure 27:UI module keys working
Try to change UI
Try to change UI
PWB. Are the
Flex. Are the keys
No
keys working now
working now?
?
No
Z300
Check X300 & X301
(Soldering and spring
contacts). Is it okay?
Yes
When keypad is pressed, are
the LEDS lit?
Measure Row0-Row4,
UP, DOWN and SELECT
lines from X301. Are
No
voltage levels ~1,8 V?
Illumination fault
Yes
Measure SleepX
signal (J403), when key is
pressed. Is voltage level
~1,8 V?
Yes
When keypad is
pressed, are the
LED's lit?
No
Illumination fault
COMPANY CONFIDENTIAL
Copyright © 2004 Nokia. All Rights Reserved.
Baseband Troubleshooting and Manual
Yes
Retest UI module
Change X300 and/
Change Z300
No
or X301
Check lines Row0-Row4,
UP, DOWN,and SELECT
No
If Ok, change Z300 and/or
Z301. If it still fails, change
RM-14
No
from X300.
TikuEdge
ISSUE 1 11/04
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