Display Does Not Work - Nokia RH-41 Series Troubleshooting Instructions

CCS Technical Documentation

Display does not work

Dis play does not
work
C hec k that phone
powers up normally
(c urrent
c ons umption, power
up s equenc e)
OK
C hec k dis play
vis ually (pos s ible
c rac ks on C OG
driver or glas s ,
c apac itors loos e or
broken)
OK
C hec k P WB and
elas tomer c onnec tor
OK
R un L C D tes t in
P hoenix (B B S elf
T es ts /
S T _L C D_T E S T )
OK
Us e Dis play T es t in
P hoenix to c hec k if
dis play works
F ail
R eplac e Dis play
Module
Issue 2 09/2003
P roc eed to
Does n't P ower Up
F ail
troubles hooting
R eplac e Dis play
F ail
Module
C lean P WB and
replac e elas tomer if
F ail
needed.
C hec k c apac itors
F ail
C 302...C 304
OK
R eplac e elas tomer
Figure 9: Fault tree, Display does not work
Nokia Corporation
Troubleshooting Instructions
P hone
In any phas e of Dis play
Dis play T es t in P hoenix to
produc e tes t patterns on
A ls o c hec k with a known
good dis play module to
R eplac e c apac itor(s )
F ail
F ail
Confidential
RH-41
troubles hooting, us e
dis play.
s ee if it works .
R eplac e Dis play
Module
Page 19