LG W3000 Service Manual page 113

8. CIRCUIT DIAGRAM
8.2 MEMORY & MMI
1
POWERKEY
KEYROW(0:4)
KEYROW(0)
A
KEYROW(1)
KEYROW(2)
KEYROW(3)
B
KEYROW(4)
KEYCOL(0:4)
KEYCOL(0)
KEYCOL(1)
KEYCOL(2)
KEYCOL(3)
KEYCOL(4)
C
LCD_BACKLIGHT
D
VIBRATOR
VBAT
E
3
R223
2
VIBRATOR
1K
1
1
LGIC(42)-A-5505-10:01
2 3 4
KB310
KB325
ON/OFF
C
KB315 KB314 KB313 KB302 KB301
3
1 2
UP
SOFT2
KB318 KB317 KB329 KB327
6
4 5
SEND
KB321 KB326 KB316 KB311
9
7 8
SOFT1
KB324 KB323 KB322 KB309
#
* 0
DOWN
SP206 SP207 SP208 SP209 SP233
VBAT
LCD BACKLIGHT
0.1u
C205
U201
MAX4599EXT-T
Q204
NO 6
IMX9T110
BACKLIGHT
R228
5 COM
6 1
R220 10K
NC 4
VCHARGE
1.5K
5 2
C210
0.1u
4 3
R250
RPWRON
NC
R251
ONNOFF
0
KEY BACKLIGHT
C237 C238 C239 C240 C241 C230
27p 27p 27p 27p 27p 27p
1
+
CN201
2
-
R212
KEY_BACKLIGHT
1.5K
Q203
2SC5585
2 3 4
5 6
2V8_VMEM
R210 NC
USC(3)
DSR
R204 NC
USC(0)
R205 47
USC(1)
R206 47
USC(2)
R207 47
USC(4)
RA201
1 2
USC(5)
3 4
HFK_DETECT
5 6
RX
7 8
TX
47
HFK_SPK_N
HFK_SPK_P
HFK_MIC_P
AUX_MIC_N
R209 47
RPWRON
BAT_TEMP
R233 1K
DATA(7)
R234 1K
DATA(6)
R235 1K
DATA(5)
DATA(4) R236 1K
R237 1K
DATA(3)
R238 1K
DATA(2)
R239 1K
DATA(1)
DATA(0) R240 1K
_RD R241 1K
R242 1K
_WR
R243 1K
LCD_RS
R244 1K
LCD_RES
R245 1K
LCD_MAIN_CS
C225 C226 C227 C228 C229 C217 C218 C219 C220 C221 C222 C223
27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p 27p
VBAT
Iss. Notice No. Date Name
5
- 112 -
7 8 9
VBAT VCHARGE
2V8_VMEM
C224
27p
VBAT
C244 C231
27p 27p
R252
R253
R254
R255
LCD_BACKLIGHT
Section Date Sign & Name
MODEL
07/24
Designer CH HWANG
2002
Checked
DRAWING
MEMORY & MMI
NAME
Approved
DRAWING
LG Electronics Inc.
NO.
10
A
CN302
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
B
23
26
25
24
23
22
21
20
19
18
17
C
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CN304
D
LCD1
0 50
VBAT1
0 51
VBAT2
0 52
VBAT3
0 53
VBAT4
54
LD1
55
LD2
W3000-LCD-BACKLIGHT
Sheet/
Sheets
W3000
2/4
V1.1
LG Electronics Inc.