4. TROUBLE SHOOTING
- 78 -
KEY BACKLIGHT
75
R337
10
R361
10
R360
LEBB-S14H
LD313
R332
75
C310
1u
1u
C317
LEBB-S14H
LD312
VBAT
LEBB-S14H
LD304
R341
75
3
1
4
IMX9T110
Q301
2
5
6
12K
R364
LD305
LD311
LEBB-S14H
LEBB-S14H
LEBB-S14H
LD303
C311
1u
LEBB-S14H
LD307
C335
27p
R343
75
75
R336
75
R345
27p
C336
1u
LEBB-S14H
LD300
C320
75
R340
1u
C319
C315
1u
1u
C316
LD309
LEBB-S14H
LEBB-S14H
LD306
10
R363
12K
R390
75
R338
VBAT
R344
75
10
R362
LEBB-S14H
LD310
C318
1u
LD308
C322
LEBB-S14H
1u
R339
75
C313
1u
C323
1u
1u
C321
75
R335
75
R342
KEY_BACKLIGHT
Circuit Diagram
START
Is the level at R390
High?
NO
Check U101
YES
Are all LEDs
Working?
NO
YES
Check the soldering
each R and LED
Backlight will work properly.
NO
Replace or resoldering
component
Checking Flow
Содержание C2100
Страница 1: ...Service Manual Model C2100 Service Manual C2100 P N MMBD0048201 Date April 2005 Issue 1 0 ...
Страница 54: ...4 TROUBLE SHOOTING 55 4 2 TX Trouble SW500 U503 X500 FL500 U501 U505 5 4 1 3 2 Test Points Figure 4 7 ...
Страница 70: ...4 TROUBLE SHOOTING 71 4 7 MIC Trouble Soldering Check U203 C225 C224 C230 Test Points Figure 4 18 ...
Страница 76: ...4 TROUBLE SHOOTING 77 4 10 KEY backlight Trouble Test Points Figure 4 21 ...
Страница 104: ... 105 8 PCB LAYOUT ...
Страница 105: ... 106 8 PCB LAYOUT ...
Страница 113: ...10 STAND ALONE TEST 114 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 117: ...Note 118 ...
Страница 119: ......
Страница 135: ......