Read Sharp LL-T1803 (serv.man7) Service Manual online
LL-T1803-E/P
CIRCUIT DIAGRAM
6 – 7
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
PO
WER INTERF
A
C
E
L4
68UH/8A
CORE_7X13X2SD
U22
HIP6013
C224
1uF
R186
10K
JS3
JP_SMT4_DFS
C219
33P
C227
0.1uF
C209
1uF
0805
C228
1uF
C215
330uF/25V
+
R137
0
0603
1%
C220
470uF/16V
+
R136
NA
0603
1%
Q9
FDS4435
R133
10K
U23
AIC1084-3.3
R130
100K
0603
C226
1000P
L19
600Z/100M
R128
22
0603
R134
10K
0603
C210
0.1uF
R132
1K
0603
C212
0.1uF
C214
330uF/25V
+
C217
0.1uF
C233
0.1uF
C315
330uF/25V
+
R214
10K/NA
C213
1000P
C221
0.01uF
R212
10K/NA
C211
1uF
Q5
MMBT3906L
R131
10K
0603
D8
1N4148
Q4
HUF75307D
R129
100K
0603
R190
10K
C207
1000P
0805
C280
0.1uF
C218
0.1uF
Q15
MMBT3904L
B90
600z/100M
3216
C279
0.1uF
C235
10uF/16V
CPWX4.3
+
C306
0.1uF
F1
RGE600
C278
0.1uF
C285
0.1uF
C234
100uF/25V
CPWX8.3
C281
0.1uF
C286
0.1uF
R126
4.99K
0805
1%
B91
600z/100M
Q17
MMBT3904L/NA
R125
40.2K
0805
D11
RLZ15A
J2
3PX1/.1/MA/GOLD
R122
10K
C223
0.1uF/NC
C208
1uF
CHOCK2
R6H_6X10
Q14
MMBT3904L
JP7
POWER_JACK20_B
R127
1K/1%
0805
R213
10K/NA
Q11
MMBT3904L
C216
1uF
0805
R176
10K
C222
1uF/NC
R124
2.94K/1%
Q16
MMBT3904L/NA
D9
SR34
Q8
SI9410DY
SO8
G
S
D
C225
100uF/25V
CPWX8.3
+
D10
RLZ15A
C237
0.1uF
C236
0.1uF
C232
1uF
16V
0805
L22
22uH
C231
10uF/16V
CPWX4.3
+
C229
10uF/16V
CPWX4.3
+
C230
470uF/16V
+
CHOCK1
R6H_6X10
R138
10K
R135
0
Q7
DTC144WK
B95
600z/100M
B97
600z/100M
R140
10K
Q6
MMBT3906L
12V
VDD_12
VDD_12
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
12_GND
5V_STBY
12V
12_GND
3V3
5V_STBY
3V3b
12_GND
VDD_12
12_GND
12_GND
12V
VDD_12
12_GND
VCC_LCD
5V_STBY
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
12_GND
GND
AUDIO_12V
GND
GND
GND
D_DDC_+5V
VDD_12
VDD_12
VDD_12
PSC0#
6
PSC1#
6
POWER CONN.
OVER VOTAGE PROTECTION
12V-->5V
LCD POWER
3.3V<--5V
MOVING
VCC_LCD
12
RT
1
OCSET
2
SS
3
COMP
4
FB
5
EN
6
GND
7
PHASE
8
UGATE
9
BOOT
10
NC3
11
NC2
12
NC1
13
VCC
14
1
2
12
1
2
1
2
1
2
1
2
1
2
1
2
1
2
SOURCE1
1
SOURCE2
2
SOURCE3
3
GATE
4
DRAIN
5
DRAIN1
6
DRAIN2
7
DRAIN3
8
3
1
2
4
1
2
12
1
2
1
2
1
2
1
2
1
2
1
1
2
B
EC
12
A
K
G
D
S
1
2
1
2
12
1
2
C
B
E
1
2
1
2
12
12
C
B
E
1
2
A
K
1
1
2
2
3
3
1
2
1
2
1
2
C
B
E
2
1
3
1
2
C
B
E
1
2
1
2
2
C
B
E
1
2
A
K
1
2
1
2
1
2
1
2
1
2
1
2
12
1
2
B
E
C
1
2
VIN
GND
VOUT0
VOUT1
2
1
2
1
2
4
8
7
3
6
5
1
1
2
3
Click on the first or last page to see other LL-T1803 (serv.man7) service manuals if exist.