Ive Troubleshooting; Display Module Troubleshooting; General Instructions For Display Troubleshooting - Nokia RM-779 Service Manual

Sr. No Signal name
1 VIVE_2V5_FILT
2 VIVE_2V8_FILT
3 VIVE_1V8_FILT
4 VBAT
5 RUN
6 XIN

IVE troubleshooting

Troubleshooting flow

Display module troubleshooting

General instructions for display troubleshooting

The first step is to verify with a working display that the fault is not on the display module itself. The display
module cannot be repaired.
Note: Always use the display with the phone's window while checking the display's visual
functionality.
The second step is to check that the engine is working normally. This can be done by connecting the phone
to a docking station and starting Phoenix service software. With the help of Phoenix read the phone
information to check that also the application engine is functioning normally (you should be able to read the
APE ID).
After these checks proceed to the display troubleshooting flowcharts. Use the Display Test tool in Phoenix to
find the detailed fault mode.
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Measuring point
C1433
C1406
C1408
C1466
J1420
C1448
COMPANY CONFIDENTIAL
Copyright © 2011 Nokia. All rights reserved.
BB Troubleshooting and Manual Tuning Guide
Description
2.5V supply to BCM2763A
2.8V supply to BCM2763A
1.8V supply to BCM2763A
VBAT supply to BCM2763A
Enable signal to IVE. This needs to be
High for IVE to be Up.
19.2MHz clock to IVE
RM-779
Issue 1