User Guide

RAE-6/RA-4
Nokia Customer Care 6 - Baseband Description and Troubleshooting
46 COMPANY CONFIDENTIAL Issue 1 12/04
Copyright © 2004 Nokia. All Rights Reserved.
PDA LCD troubleshooting
X100:
Are
!CS
(pin10),
SCL (pin10),
DIN (pin15),
DOUT (pin16)
lines working
properly?
Are
VDDI/VDD
(X100 pin 34 ~2.8V)
and GND
voltage levels ok?
Yes
PDA
display
check
Yes
Is !RES
(X100 pin33)
signal
reasonable?
Check
connectors
X102/X100.
OK?
X100:
Are VS (pin45),
HS (pin46)
DE (pin40)
PCLK (pin51)
lines working
properly?
X100:
Are
data lines
R0...4,
G0...5 and
B0...4
working
properly?
Yes
End
No
Blank display?
Picture
disturbed?
Strange colors or
other effects?
Yes
No
No
Yes
No
No
No
Yes No
Yes
Check
flex connector
X4402
on engine PWB.
OK?
Change UI
module.
Check
flex connector
X4402
on engine PWB.
OK?
Check
flex connector
X4402
on engine PWB.
OK?
Check
flex connector
X4402
on engine PWB.
OK?
No
Check
flex connector
X4402
on engine PWB.
OK?
Yes
Yes
Yes
Go to EM trouble
shooting
Change adequate EMI
filter(s)
Z4400...4403.
Signals OK?
Fix connector. No
Yes
Fix connector. No
Fix connector.
No
No
Yes
No
No
OMAP FAULT.
Fault is in non-
reworkable component.
Refer to current BER
handling guidance.
LCD working?
No
Display physically
broken?
Yes
Change LCD.
LCD working?
No
Yes
End
No
No
Yes
Yes
Yes
Yes
Fix connector.
Fix connector.