Display Faults - Nokia RH-66 Troubleshooting Manual

Nokia Customer Care

Display Faults

Display
Faults
Are the keyboard
LEDs turned on
when the mobile
terminal is turned on
or when making a
call?
YES
Display
faults 2
Issue 1 03/2005
Measure VBATT
voltage at L2400. Is
NO
it okay?
Measure the driver
signal from UEM at
J2420. Is the signal
Check N2400 driver
signal at C2404. Is it
Check R2403,
R2404. Do you have
.6V across?
Check LEDs D2401,
D2403, and D2402.
Are they okay?
Check R2410 and
V2404. Are they
Reflash
©2005 Nokia Corporation
2115i/2116/2116i (RH-66)
Baseband Description and Troubleshooting
YES
NO
NO
okay?
YES
NO
okay?
YES
NO
YES
NO
YES
NO
okay?
YES
Company Confidential
Check VBATT line
and C2405, C2407,
and L2401.
Change UEM
Change N2400
Replace V2400
Replace any bad
components
Replace any bad
components
Page 47