Nokia RM-627, Руководство по обслуживанию

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Symptoms and diagnosis
Table 5 Nominal x, y, z readout
Position Nominal readout X Nominal readout Y Nominal readout Z
Phone lying flat on
table. Display up.
0.0 0.0 1.0
Phone lying flat on
table. Display down.
0.0 0.0 -1.0
Holding the phone
vertically
0.0 1.0 0.0
Holding the phone right
side down
-1.0 0.0 0.0
The impact test is done with the phone in four different positions to test all axes. The table presents the nominal value readout value
for x, y and z axis in the different phone positions. Tol/- 0.9
Table 6 Nominal voltages
Supply Measure on Nominal voltage
VAUX2 C6503 2.5 V
VIO C6504 1.8 V
Display module troubleshooting
General instructions for display troubleshooting
Context
•
The display is in a normal mode when the phone is in active use.
•
The operating modes of the display can be controlled with the help of
Phoenix
.
Table 7 Display module troubleshooting cases
Display blank There is no image on the display. The display looks
the same when the phone is on as it does when the
phone is off. The backlight can be on in some cases.
Image on the display not correct Image on the display can be corrupted or a part of
the image can be missing.
• If a part of the image is missing, change the
display module.
• If the image is otherwise corrupted, follow the
display fault troubleshooting flowchart.
Backlight dim or not working at all Backlight LED components are inside the display
module. Backlight failure can also be in the
connector or in the backlight power source in the
main engine of the phone.
This means that in case the display is working
(image OK), the backlight is faulty.
RM-627
BB Troubleshooting and Manual Tuning Guide
Page 3 – 26 COMPANY CONFIDENTIAL Issue 1
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