4. TROUBLE SHOOTING
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4.11 Key Backlight LED Trouble
KEY_BACKLIGHT
(WHITE LED)
X 8EA
LD307
R347
47
R359
10
R344
47
LD303
LD304
LD308
C312
1u
R358
12K
47
R348
LD301
LEBB-S14H
47
R351
C315
R346
47
1u
1u
C314
1u
C317
C316
1u
LD306
LD305
47
R350
R349
47
12K
R357
27p
C319
47
R345
1u
C318
1u
C311
C313
1u
VBAT
2
3
1
2SC5585
Q301
R360
10
LD302
KEY_BACKLIGHT
BACKLIGHT WILL
WORK PROPERLY.
START
Is the voltage level VBAT
3.6-4.2V?
No
Are all LEDs LD301~LD308
working?
No
Check the soldering of each R or replace LEDs not working.
Yes
Charge battery
No
Check the condition of Q302. If problem, Change Q301
Yes
Q301 is working?
Yes
TEST POINT
Checking Flow
CIRCUIT
Figure 4-11
Main PCB
Summary of Contents for M6100
Page 1: ...Date February 2006 Issue 1 0 Service Manual Model M6100 Service Manual M6100 ...
Page 3: ... 4 ...
Page 15: ...3 TECHNICAL BRIEF 16 Figure 3 1 SKY74400 FUNCTIONAL BLOCK DIAGRAM ...
Page 40: ...3 TECHNICAL BRIEF 41 3 7 CAMERA IC AIT813 U701 Figure 3 18 AIT813 APPLICATION BLOCKDIAGRAM ...
Page 42: ...3 TECHNICAL BRIEF 43 3 8 MIDI IC YMU787 U708 Figure 3 20 YMU787 BLOCKDIAGRAM ...
Page 63: ...4 2 TX Trouble 4 TROUBLE SHOOTING 64 SKY74400 FEM 13Mhz OSCILLATOR TEST POINT Figure 4 2 ...
Page 98: ...4 TROUBLE SHOOTING 99 4 16 Camera and Flash Trouble Camera Module CN802 U704 U705 Figure 4 17 ...
Page 109: ... 110 ...
Page 119: ... 120 8 PCB LAYOUT ...
Page 120: ... 121 8 PCB LAYOUT ...
Page 121: ... 122 8 PCB LAYOUT ...
Page 122: ... 123 8 PCB LAYOUT ...
Page 123: ... 124 ...
Page 131: ...10 STAND ALONE TEST 132 Figure 10 2 HW test setting Figure 10 3 Ramping profile ...
Page 137: ... 138 ...
Page 159: ...Note ...
Page 160: ...Note ...