
4. TROUBLE SHOOTING
- 83 -
CIRCUIT
CHECKING FLOW
KEY BACKLIGHT
LD302
LEBB-S14H
10
R330
75
R306
LEBB-S14H
LD308
C303
1u
LD305
12K
R328
LEBB-S14H
LEBB-S14H
LD303
10
R329
1u
R303
75
C310
R310
75
R314
75
75
R313
C316
27p
C304
75
R309
1u
LEBB-S14H
LD307
C315
27p
C305
1u
1u
C301
LEBB-S14H
LD304
LEBB-S14H
LEBB-S14H
LD309
LD313
10
R326
75
R307
C306
1
u
LD306
LEBB-S14H
1u
VBAT
C308
LD312
LEBB-S14H
R315
75
LEBB-S14H
LD311
10
R327
75
R312
1u
C312
R305
75
LEBB-S14H
C307
1u
LD314
C302
1
u
2
5
6
3
1
4
UMX1NTN
Q301
C309
1u
C314
1u
LEBB-S14H
LD301
R308
75
C313
1u
12K
R325
75
R316
C311
1u
LD310
LEBB-S14H
VBAT
75
R304
75
R311
KEY_BACKLIGHT
Figure 4-20(b). KEY Backlight Trouble
START
Is the level at R325
High?
NO
Check U102
YES
Are all LEDs
Working?
NO
YES
Check the soldering
each R and LED
Backlight will work properly.
NO
Replace or resoldering
component
Содержание KG240
Страница 1: ...Date April 2006 Issue 1 0 Service Manual Model KG245 Service Manual KG245 ...
Страница 3: ... 4 ...
Страница 81: ...4 TROUBLE SHOOTING 82 4 13 KEY backlight Trouble TEST POINT Figure 4 20 a KEY Backlight Trouble ...
Страница 90: ...5 DOWNLOAD AND CALIBRATION 91 5 2 Download Procedure 5 2 1 Computer Program file MultiGSM exe Click ...
Страница 92: ...5 DOWNLOAD AND CALIBRATION 93 5 2 3 Configuration Setting C GSMULTI Model MG210 dll ...
Страница 93: ...5 DOWNLOAD AND CALIBRATION 94 5 2 4 Press Start Button KG245 ...
Страница 94: ...5 DOWNLOAD AND CALIBRATION 95 5 2 5 After Start Button Which Stand by condition KG245 ...
Страница 95: ...5 DOWNLOAD AND CALIBRATION 96 5 2 6 SW downloading Condition KG245 ...
Страница 96: ...5 DOWNLOAD AND CALIBRATION 97 5 2 7 SW downloading END Condition KG245 ...
Страница 99: ...5 DOWNLOAD AND CALIBRATION 100 4 Click on CALIBRATION START button KG245 KG245 ...
Страница 100: ...5 DOWNLOAD AND CALIBRATION 101 6 BLOCK DIAGRAM ...
Страница 101: ... 102 ...
Страница 110: ... 111 8 PCB LAYOUT ...
Страница 111: ... 112 8 PCB LAYOUT ...
Страница 112: ... 113 KG245 8 PCB LAYOUT ...
Страница 113: ... 114 KG245 8 PCB LAYOUT ...
Страница 121: ...10 STAND ALONE TEST 122 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Страница 125: ... 126 ...
Страница 127: ... 128 ...
Страница 145: ...Note ...
Страница 146: ...Note ...