119
7321 N/B Maintenance
7321 N/B Maintenance
R53
10K
8.4 LCD No Display Or Picture Abnormal
1
4
5
6
7
8
2 3
U30
H8
U16, 26
U23, 29
U15,25
U22, 28
Q502
DTC144WK
Q511
2N7002
Q501
S14800DY
R57
100K
R56
1K
SW2
C14
220P
L507
C9
4.7U
R513
470K
R635
100K
+5V
+12V
+3V
+5V
+5V
J3
J5
1
2
1
4
BLADJ
PANEL VDD
FPVCC
EBABLE_VGA
TXOUT[0~2]+ , TXOUT[0-2]-
TXOUT[20~22]+ , TXOUT[20-22]-
TX,-,2+,2-}
D
S
G
1
2
3
D5
BAW56
1
2
3
24
45
Symptom:
The LCD shows nothing or abnormal picture, but it is ok for external monitor.
U21
U21
North
North
Bridge
Bridge
VT8362
VT8362
ENABLE_BL
2,3
C23
220P
C231
0.1u
C10
0.1U
LCD
LCD
17
R55
0
24
L24
PANEL VDD level
Need above 3.2V
Connect to Inverter BD
+5V
LIO_OPEN
Cover Switch
Содержание MiNote 7321
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