A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
2
OUT
1
ADJ/GND
4 Vout
4 Vout
APL1117
-33CE
APL1085
3
IN
2
OUT
3
IN
SOT-252
1
ADJ/GND
SOT-223
401A78
1B
CTRL/B VL-901,POWER
C
7
7
Thursday, July 04, 2002
Title
Size
Document Number
Rev
Date:
Sheet
of
5VCC
BLKON
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
+5V
+5V
+5V
+2.5V
GND
GND
LVDS_3.3V
GND
GND
GND
GND
2.5V_VDD
3.3V_DVDD
+3.3V
GND
C87
0.1uF
C91
0.01uF
C93
0.1uF
U11
APL1085-3.3CE
1
2
3
GND
OUT
IN
C88
0.01uF
U13
APL1117-3.3V
1
2
3
4
ADJ
VO
VI
VO
+
C97
100uF
J2
CON7
1
2
3
4
5
6
7
C86
0.1uF
R70
1K
+
C94
100uF
C98
0.1uF
U12
APL1117-25uC
1
2
3
4
ADJ
VO
VI
VO
+
C100
100uF
+
C92
100uF
+
C89
100uF
C99
0.1uF
+
C102
47uF
C84
0.1uF
L5
BLM21P300S
+
C96
100uF
+
C85
100uF
L6
BLM21P300S
C95
0.1uF
+
C83
100uF
+
C90
100uF
L7
BLM21P300S
BRI_ADJ
SHT-4
PBIAS
Summary of Contents for AL922
Page 21: ...21 3 3 BLOCK DIAGRAM ...
Page 31: ...31 7 TROUBLESHOOTING 7 1 Main Procedure ...
Page 32: ...32 7 1 1 Power Circuit Troubleshooting ...
Page 33: ...33 7 1 2 Backlights Troubleshooting ...
Page 34: ...34 7 1 3 Performance Troubleshooting ...
Page 35: ...35 7 1 4 Function Troubleshooting ...
Page 38: ...38 Back Cover Cable Cover Gap 0 8 mm B 1 2 mm Base Cover Neck Cover Gap 0 8 mm C 1 2 mm ...
Page 42: ...42 WAVESHAPE ...
Page 48: ...48 APPENDIX A PARTS LISTS ...
Page 50: ...50 A 4 461A7830011 Firmware Ctrl Board VL 901 ...
Page 53: ...53 APPENDIX B DISPLAY UNIT ASSEMBLY ...