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5. Trouble shooting
- 93 -
5.10 Keypad back light trouble
Check Points
-Signal path is connected well
-Control IC is working properly
Checking Point
VBAT
47
R413
LD407
47
R416
LD409
LD411
LD408
EVL5M02200
VA402
47
R417
R419
47
LD412
0
R421
LD406
EVL5M02200
VA401
47
R412
0
LD410
R420
R411
47
47
LD405
R414
VA403
EVL5M02200
LD404
TWH104-HS
R418
47
47
R415
KEY_BACKLIGHT
Check R420
resistor
Summary of Contents for KE600
Page 1: ...Date October 2006 Issue 1 0 Service Manual Model KE600 Service Manual KE600 ...
Page 3: ... 4 ...
Page 5: ... 6 ...
Page 53: ...3 TECHNICAL BRIEF 54 3 16 BLUETOOTH Figure 28 BLUETOOTH Functional block diagram ...
Page 69: ...4 PCB layout 70 Figure 45 Main PCB bottom Figure 46 Main PCB bottom placement ...
Page 70: ...4 PCB layout 71 Figure 47 Sub PCB top Figure 48 Sub PCB top placement ...
Page 71: ...4 PCB layout 72 Figure 49 Sub PCB bottom Figure 50 Sub PCB bottom placement ...
Page 89: ...5 Trouble shooting 90 ...
Page 116: ...6 Download S W upgrade 117 6 2 Download program user guide ...
Page 117: ... 118 6 Download S W upgrade ...
Page 118: ... 119 6 Download S W upgrade ...
Page 119: ... 120 6 Download S W upgrade ...
Page 127: ... 128 8 PCB LAYOUT ...
Page 128: ... 129 8 PCB LAYOUT ...
Page 129: ... 130 8 PCB LAYOUT ...
Page 130: ... 131 8 PCB LAYOUT ...
Page 131: ... 132 ...
Page 143: ... 144 ...
Page 145: ... 146 ...
Page 167: ...Note ...
Page 168: ...Note ...