Chapter 7 Schematic Diagram - Acer AL2423 W Service Manual

SCHEMATIC DIAGRAM
5
+12V
L9 L9
D19 D19
1 2 C
100UH 100UH RB081L-20 RB081L-20
R237 R237 R225 R225
+ + 560/1206 560/1206
390K/6 390K/6
U15 U15
8 1
DRI SC
7 2
IPK SE
6 3
D VCC TC
5 4
FB GND
GND C195 C195
AIC1563 AIC1563 330pF/5% 330pF/5%
GND GND
ADD 12V to 18V 10/14/2005
U12 U12
FB19 L1206 FB19 L1206
3
+5V VIN
C
1
ADJ/GND
C171 C171 AIC1084/TO263 AIC1084/TO263
0.1uF 0.1uF
+ + C201 C201
100uF/25V 100uF/25V
GND
GND
U14 U14
FB26 L1206 FB26 L1206
3
+5V VIN VOUT
Vout
1
ADJ/GND
+ + C202 C202 C192 C192 AIC1084/TO263 AIC1084/TO263
0.1uF 0.1uF
47uF/25V 47uF/25V
GND GND
B
09/23 ADD
D17 D17 D18 D18
1N4001 1N4001 1N4001 1N4001
+5V
C199 C199
+ +
C184 C184
100uF/25V 100uF/25V 0.1uF 0.1uF
GND GND
H5 H5 MTH276D126 MTH276D126 H6 H6 MTH276D126 MTH276D126
2 9 2 9
3 8 3 8
1 1 1 1
4 7 4 7
5 6 5 6
H1 H1 MTH276D126 MTH276D126 H2 H2 MTH276D126 MTH276D126 H3 H3 MTH276D126 MTH276D126
A 2 9 2 9 2
3 8 3 8 3
4 1 1 7 4 1 1 7 4
5 6 5 6 5
GND_PWR GND_PWR GND GND GND
5
Main Board Circuit
4
Change 5V to 3.3V
+18V
+3.3_DVDD
A
C206 C206
2200pF/6 2200pF/6 C207 C207
0.1uF /6 0.1uF /6
R224 R224 + + C204 C204
13.3K/1% 13.3K/1%
330uF/25V 330uF/25V
R172 4.7K R172 4.7K
B
PWM0/BOOT5
R223 R223 GND Q5 Q5
1K/1% 1K/1% GND 3904 3904
+5V
R231 R231 4K7/6/NC 4K7/6/NC
R232 R232 0/6 0/6
GND
MMST3906/NC MMST3906/NC
R250 R250
PBIAS
4K7/6/NC 4K7/6/NC
Q16 Q16
GND
Add 5V for avoiding lack current 11/2
+3.3_DVDD +3.3_AVDD
FB20 L1206 FB20 L1206
2
VOUT
2
4
Vout
+ + C196 C196
R186 R186 1 3
200R 1% 200R 1% 100uF/25V 100uF/25V C173 C173
0.1uF 0.1uF TO263
Component
top view
R194 R194 GND GND
330R 1% 330R 1%
4501-10-10P-R 4501-10-10P-R
GND
+3.3_SDRAM
2
4
+ + C197 C197
R219 R219 C194 C194
200R 1% 200R 1% 47uF/25V 47uF/25V 0.01uF 0.01uF
R220 R220 GND GND
330R 1% 330R 1%
GND
+1.8_DVDD +1.8V_AVDD
U13 U13
FB21 L1206 FB21 L1206
3 2
VIN VOUT
4
Vout
1
ADJ/GND
AIC1084/TO263 AIC1084/TO263
R203 R203
330R 1% 330R 1% C198 C198 C186 C186
+ +
0.1uF 0.1uF
100uF/25V 100uF/25V
R204 R204 GND
147R 1% 147R 1%
GND GND
H4 H4 MTH276D126 MTH276D126
FB24 FB24 L1206 L1206
9 2 9
8 3 8
1 1 7 4 1 1 7 FB25 FB25 L1206 L1206
6 5 6
AGND GND GND_PWR
GND GND_AUD GND_AUD
4
3
CN7 CN7
R170 R170
1 2
1K 1K
3 4
5 6
R171 R171 10K 10K ADJ
7 8
C163 C163 C164 C164
HEADER-2X4/S D2.0 HEADER-2X4/S D2.0
22uF/10V 22uF/10V 0.1uF 0.1uF GND_PWR
GND
GND
R173 1K R173 1K
ON/OFF
C169 C169
0.1uF 0.1uF
GND
+3.3_DVDD
exchange for ESD 11/2
R185 R185 0R/NC 0R/NC
CN8 CN8
R187 R187 100R 100R
1
R188 R188 100R 100R
2
R189 R189 100R 100R
3
R190 R190 100R 100R
4
R191 R191 100R 100R
5
R192 R192 100R 100R
6
R193 R193 100R 100R
7
R195 R195 100R 100R
8
R196 R196 100R 100R
9
10
R197 R197
100R 100R
GND
Q9 Q9
3906 3906
Q10 Q10
3906 3906
+3.3_DVDD
FB27 FB27 L1206/NC L1206/NC
+18V
FB22 FB22 L1206/NC L1206/NC
+12V
FB23 FB23 L1206 L1206
+5V
R205 R205 Q11 Q11
SI9435 SI9435
C187 C187 4K7 4K7
1
R206 R206 1uF 1uF
2
0R/NC 0R/NC
3
4
R208 R208
2K 2K
R210 R210
4K7 4K7
B
PPWR
Q13 Q13
3904 3904
GND
GPIO17_PANCUR
Mofidy for discharge circuit 11/2
3
Chapter 7
2
12V +12V
L1206 L1206
FB28 FB28
C159 C159 C161 C161 C162 C162
0.1uF 0.1uF 0.1uF 0.1uF 0.01uF 0.01uF
GND_PWR
GND_PWR GND +5V
FB17 FB17 L1206 L1206
C165 C165 C167 C167 C168 C168
0.1uF 0.1uF 0.1uF 0.1uF 0.01uF 0.01uF
GND_PWR
GND
+12V
R174 R174
R175 R175 10K/NC 10K/NC
10K/NC 10K/NC
3906/NC 3906/NC
Q6 Q6
330R/NC 330R/NC R177 4K7/NC R177 4K7/NC
LEFT/LED_G GPIO30/LEFT/LED_G
B
R176 R176
Q7 Q7
3904/NC 3904/NC
GND
LBADC1
LBADC1
GPIO24/MENU
GPIO24/MENU
GPIO25/SEL
GPIO25/SEL
GPIO26/POWER
GPIO26/POWER
GPIO27/DOWN
GPIO27/DOWN
GPIO28/UP
GPIO28/UP
GPIO29/RIGHT
GPIO29/RIGHT
LEFT/LED_G
R198 R198 R199 R199
100R/NC 100R/NC 0R/NC 0R/NC
Q8 Q8 R200 R200 4K7/NC 4K7/NC GPIO30/KEYPAD
GPIO31/KEYPAD
3906/NC 3906/NC
R201 R201 4K7 4K7 GPIO4/LED_BLUE
GPIO4/LED_BLUE
R202 R202 4K7 4K7 GPIO3/LED_ORANGE
GPIO3/LED_ORANGE
PNL_PWR
8
7
6
5
C203 C203
+ +
C188 C188 Q12 Q12 C190 C190
0.1uF 0.1uF R207 R207 SI9435/NC SI9435/NC 330uF/25V 330uF/25V 0.1uF 0.1uF
4K7/NC 4K7/NC
1 8
2 7
3 6
GND GND GND
4 5
R209 R209
100R/NC 100R/NC
R211 R211
1K/NC 1K/NC
R233 R233 4K7/NC 4K7/NC
B
Q14 Q14
3904/NC 3904/NC
GND
GND
PROJECT : WDTB PROJE
Techview Inc. Techview Inc.
Title Title
01. Power/Keypad
Size Size Document Number Document Number
SCHEMATIC1
Date: Date: Tuesday, December 13, 2005
2
1
3 3
D
1 2 1 2
3906 3904
Component Component
top view top view
GPIO30/LEFT/LED_G
C
B
A
Rev Rev
WDTB C2A
Sheet Sheet 1 of 8
1