3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
VA7202
DNI
C7228
DNI
C7232
22p
100K
R7202
CN7201
21
20
22
19
23
18
24
17
25
16
26
15
27
14
28
13
29
12
30
11
31
10
32
9
33
8
34
7
35
6
36
5
37
4
38
3
39
2
40
1
+1V8_LCD_VIO
VBAT
+2V8_LCD_VCI
+1V8_LCD_VIO
22p
C7229
22p
C7227
C7230
22p
22p
C7226
C7223
22p
22p
C7224 C7225
22p
22p
C7221
C7220
22p
22p
C7219
C7222
22p
22p
C7218
C7217
22p
22p
C7216
C7215
22p
100K
R7203
2
1
DNI
R7204
C7200
1u
C7203
1u
C7202
2.2u
R7211 100K
2
1
LCD_RS
LCD_CS
LCD_RD
LCD_VSYNC
LCD_MAKER_ID
LCD_RESET_N
MLED_1
MLED_2
MLED_3
MLED_4
LCD_DATA_1
LCD_DATA_0
LCD_WR
MLED_5
LCD_DATA_15
LCD_DATA_14
LCD_DATA_13
LCD_DATA_12
LCD_DATA_11
LCD_DATA_10
LCD_DATA_9
LCD_DATA_8
LCD_DATA_4
LCD_DATA_7
LCD_DATA_6
LCD_DATA_5
LCD_DATA_2
LCD_DATA_3
LED_A
NC
PWM
TOVIS (High)
NC
VCI: TP1 (C7203)
VIO: TP2 (C7200)
0
R722
3
1u
C7208
1u
C7207
U7200 RT9393
14
13
12
11
10
9
8
7
6
5
4
3
2
1
GND
C2N
C1N
C1P
C2P
VIN
EN
LED6
LED5
LED4
LED3
LED2
LED1
VOUT
C7209
2.2u
VBAT
R7205
100K
1u
C7211
DNI
R7224
MLED_1
MLED_2
MLED_3
MLED_4
MLED_5
LCD_BL_EN
L20 : R7223 0¿È R7224 DNI
L30 : R7223 DNI R7224 0¿È
LCD_BL_EN: TP3
(R7205)