Table 7 Defects table
Item Bright dot defect (R & G & B are 0) Dim dot defect (G is 0)
Defect
counts
Red Green Blue Red Green Blue
R0 G0 B0
2 dim dots
acceptable
G0
2 dim dots
acceptable
Acceptable
Not
acceptable
R40 G30 B70 NA G230 NA
R41 G31 B71 R201 G231 B101
Not acceptable Acceptable
R255 G255 B255 R255 G255 B255
Note: Blinking pixels are not allowed in normal operating temperatures and light conditions.
Introduction to display troubleshooting
The display module used is based on AMOLED technology and supports the display format of 800 columns x
480 rows. The dimension of the display module is 61 mm x 103.7 mm x 1.11 mm. The display is connected
to MSM8960 with a 4-lane MIPI DSI.
The following references on the PWB help in the effective debugging and troubleshooting of the display.
Sr No Reference Description
1 X1350 Display connector
The following test points on the PWB help in the effective debugging and troubleshooting.
Sr. No Signal name Measuring point Description
1 VDDI VREG_L23_1V8
2 VPNL VPH_PWR
3 ELVSS Negative supply to display -4.0V
4 ELVDD Positive supply to display 4.6V
RM-824; RM-825; RM-826
BB Troubleshooting Guide
Issue 2 NOKIA INTERNAL USE ONLY Page 3 – 23
Copyright © 2012 Nokia. All rights reserved.
To Next Page
Loading...
Need help?
General
