NSB-9
Troubleshooting Instructions
CCS Technical Documentation
Page 74
Nokia Corporation
Issue 1 04/03
No
Are flip
QWERTY
keys
working?
Keypad
faults 3
Keypad
faults 4
Check flip poco pins,
engine contact pads.
and spring contacts
between A-cover and
engine module. Are
they OK?
Measure Flip VBAT
voltage between J302
and J308 (Should be
same as engine
VBAT voltage).
Change flip. Is it OK
now?
Yes
No
Measure voltage
levels from flip data
(J304) and clock
(J306). Is it ~1.8V
Check with
oscilloscope that data
is flowing, data shape
and levels are OK.
Retest
Yes
Yes
Yes
Change defected part,
either flip or A-cover.
Retest
Flip
faults 2
Yes
No
No
No
No
Yes
Check L310, L312,
R300, R302,
Z300,
genio17/18 lines and
R319 pull-up to VIO
(~1.8V). If ok change
UPP
Содержание NSB-9
Страница 14: ...NSB 9 CCS Technical Documentation Page 8 Nokia Corporation Issue 1 04 03 This page left intentionally blank ...
Страница 59: ...CCS Technical Documentation NSB 9 Series Transceivers Issue 1 04 03 Nokia Corporation Parts List ...
Страница 80: ...NSB 9 CCS Technical Documentation Page 2 Copyright Nokia All rights reserved Issue 1 04 03 ...
Страница 116: ...NSB 9 Company confidential CCS Technical Documentation Page 40 Copyright Nokia All rights reserved Issue 1 04 03 ...
Страница 143: ...CCS Technical Documentation NSB 9 Series Transceivers Issue 1 04 03 Nokia Corporation Service tools ...
Страница 166: ...NSB 9 Service tools CCS Technical Documentation Page 24 Nokia Corporation Issue 1 04 03 ...
Страница 175: ...CCS Technical Documentation NSB 9 Series Transceivers Issue 1 04 03 Nokia Corporation Troubleshooting Instructions ...