Display Board Diagram - Haier JC-298G Service Manual

4. Display board diagram

1
R39220
B
A
R40220
P3
A
R8 4.7K
2SA1037AK
+5V
P2
R7 4.7K
2SA1037AK
+5V
+5V
R21 R22
10K 10K
IC2
B
1 8
A0 VCC
2 7
A1 TEST
3 6 SCL
A2 SCL
4 5 SDA
VSS SDA
AT24C01A
+5V
R25
10K R32
C4
1K
CN3
+5V 104
1
GND
2
TX
3
RX
4
C
5267-4A R35 R36
100 100
+5V
R28
4.7K
CN2
LC
D
2
R30 2K
1
C5
5267-2A
104
1
2
CN1
GND
1
+5V
2
C 3
HEAT 4
+5V
LAMP
5
5267-5A
R1
P1
2K
R6 10K
2SA1037AK
R2
2K
RST
R23
R24 C3
10K
10K
104
R34 R38
10k 10k
560
R37
XT1
C1
4.9152MHZ
R26
22
10M
1
OSC1
C2
2
OSC2
22 3
MC68HC908JL8CFA
A1/KB1
C0 +5V
4
VDD
IC1
104 5
A2/KB2
6
A3/KB3
7
B7/AD7
8
B6/AD6
R31
10K
2
3
E1
P4
16V/220U
2SA1037AK
+5V
R9 4.7K
R3 2K
R4 2K
R5 2K
P5
2SA1037AK
R10 4.7K
D
+5V
BUZZ1
P6
PS1740P02C
R33
2SA1037AK
220
R11
+5V
4.7K
P7
2SA1037AK
24
D5/T1C1
23
R12
D2/AD9
+5V
4.7K
22
A4/KB4
P8
21
2SA1037AK
D3/AD8
20
B0/AD0
R13
19 +5V
4.7K
B1/AD1
18
P9
D1/AD10
2SA1037AK
17
B2/AD2
R14
+5V
4.7K
R19
2K
R29 4.7K
3
4
F
R41220
R42 220
G
+5V
+5V
LED1
220 R43
TOT-5371
R45 R46
R44
H
220 220
220
E
C
N1
2SC2412K
R15
4.7K
N3
2SC2412K
R16
4.7K
N2
2SC2412K
R17
4.7K
N4
2SC2412K
D4 D3
RLS4148 RLS4148
R18
4.7K
SW4 SW3 SW2
4
A
LED3 LED2
B
C
D2 D1
RLS4148 RLS4148
+5V
R20
SW1 10K
D