User Guide

CCS Technical Documentation
Company confidential RH-23
Issue 1 03/2004 Nokia Corporation. Page 59
LCD2 Illumination Fault
Figure 52: LCD2 illumination troubleshooting
Start
Do the LCD2 lights
switch on?
End
Yes
Check LCD module,
connectors X1100, X1102,
X302 and upper block assy.
Change/fix failing part
Change upper
block flex assy.
Are the lights
working now?
No
Close fold and
activate lights with
Phoenix. measure
D305 SD pin = 0V
and Brgt pin ~0V
N
o
Change UEM (D200)
No
Yes
Check V313,
R332 and
R333. OK?
Change/fix
defected
component
(
s
)
Change Hinge
flex assy
No
Yes
Measure Module
Jig “hinge” pin 39
~3.5 and
pin 22 ~0V. OK?
Y
es
No
Check R330, C333,
C331, C330, C332.
Are the
y
OK?
Change D305
Y
es
Change UEM (D200)
Yes
Yes
Figure 25: LCD2 illumination troubleshooting