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HP L1902 Service Manual
Page 25 of 69
7.2 Power Board
+12V
+
C907
47uF/50V
C912
0.1uF/50V
C908
0.1uF/50V
L903
73L-253-91L
connect pitch 2.5mm
R924
1K 1/10W
R900
680K 1/8W
F902
5A/24V/1206
D910
MOSPEC20100
SW901
NC
D902
PS102R
C911
0.1uF/50V
R906
1M 1/8W
12V
R926
9.31K 1/10W
R916
4.7K 1/10W
R921
470 1/8W
D911
MOSPEC20100
C910
1000pF
R917
100 1/10W
R927
2.43K 1/10W
SG6841
BiCOMS
2
3
5
7
1
4
6
8
FB
Vin
RT
VDD
GND
RI
SENSE
GATE
CN901
CONN
1
2
3
4
5
R903
100K 2W
IC903
H431BA
R904
1M 1/8W
R923
0 1/10W
R918
4.7K 1/10W
R919
47 1/8W
C921 0.0047uF/250V
2
INTERNAL POWER FOR PWPC1942LGH2
B
1
3
Thursday, December 25, 2003
<Title>
Size
Document Number
Rev
Date:
Sheet
of
C913
0.001uF
R910 0 1/8W
ZD902
12V/SMD
C919
0.01uF
R920
47 1/8W
ZD901
12V
D903
1N4148
J903
JUMPER1
1
2
R922
1K 1/10W
R907
1M 1/8W
+
C905
150uF/400V
L904
73L 174-26-LS
1
4
2
3
L902
73L174-29-LS
1
4
2
3
R909 10 1/4W
Q902
PMBS3904
3
2
1
DIM
R912
20K 1/10W
t
NR901
NTCR 5A5
R913
20K/0805
C918
0.1uF/50V
FG
+
C914
1000uF/16V
80LL17T-5
O
O
O
T901
PQ26/22.5
4
12
6
7
3
2
8
11
D901
FR107
ON/OFF
R902
680K 1/8W
R925
1K 1/10W
+5V
R911
24K 1/10W
R901
680K 1/8W
12V
C902
0.001uF/250V
Q903
PMBS3906
3
2
1
-
+
BD901
GBU4J
1
4
3
2
F901
2.5A/250V
C901
0.001uF/250V
C903
0.47uF/250V
C909
N.C
R915 30K 1/4W
C917
0.1uF/50V
R908
3.3 1/8W
IC902
PC123FY2 4P
1
2
4
3
+
C922
4.7uF
Q901
2SK2996
+
C915
1000uF/16V
D904
1N4148
R905
1M 1/8W
R914
0.27 2W
CN902
CONN
2
4
6
8
10
12
14
16
1
3
5
7
9
11
13
15
J902
JUMPER1
1
2
+
C916
470uF/16V
C906
1500pF/1KV
FB901
BEAD
J901
JUMPER1
1
2
R223
1M 0805
Q206
PMBS3904
3
2
1
C224
4700PF / 0805
R215
470 0805
R221
33K 0805
Q207
DTC144WKA
3
2
1
Q211
RK7002
+12V
R207
10K 0805
R232
1M 1/10W
C222
1uF/0805
Q205
DTA144WKA
3
2
1
D205
0 0805
R228
3.6 K 0805
Q208 FSI4532
1
2
3
4
5
6
7
8
S1N
G1N
S2P
G2P D2P
D2P
D1N
D1N
R234
470 0805
R238
1M 0805
Q209
FSI4532
1
2
3
4
5
6
7
8
S1N
G1N
S2P
G2P D2P
D2P
D1N
D1N
C237
5pF/3KV
R208
3M 1/2W
JP204
1
2
GND
CN202
33L8021-2D
-A
C
1
2
R204
10K 0805
PT201
80LL17T-16-LC
1
7
6
10
R219
N.C
C226
0.1uF/0805
C246
0.1uF/0805
R235
0
0805
R241
1M 0805
PT202
80LL17T-16-LC
1
7
6
10
+
C225
470uF/25V
C228
0.0068uF/25V
R212
3.6K 0805
CN204
33L8021-2D-AC
1
2
is power GND
C238
10pF/3KV
C217
0.1uF/0805
D203
BAV99
3
1
2
JP203
1
2
R202
10 1206
C227
0.1uF/0805
R242
0
0805
is signal GND
C232
0.0015uF/0805
R227
470 0805
R222 51K 0805
C216
222/0805
C205
5pF/3KV
C221
0.47uF/0805
R239
1K 0805
2
PWPC1942LGH2
AOC (Top Victory) Electronics Co., Ltd.
Custom
2
2
Thursday, December 25, 2003
Title
Size
Document Number
Rev
Date:
Sheet
of
D208
1N4148
C213
1uF/0805
R214
0
0805
JP201
1
2
C241
152 0805
R247
470 0805
C212
0.1uF/0805
R218
1K 0805
R213
NC 0805
D206
BAV99
3
1
2
D201
BAV99
3
1
2
C244
2.2uF/0805
C230
0.047uF/0805
OZ960
IC201
1
2
3
4
5
6
18
17
16
15
14
13
8
7
19
9
10
12
11
20
CTIMR
OVP
ENA
SST
VDDA
GNDA
CT
RT
PWRGND
LCT
DIM
LPWM
RT1
REF
PDRV_A
FB
CMP
PDRV_C
NDRV_D
NDRV_B
R237
120K 0805
Q212
RK7002
R230
0
0805
C206
2.2uF/1206
R205
0 1/10W
C229
104/0805
C207
2.2uF/1206
D204
BAV99
3
1
2
D210
BAV99
3
1
2
R210
470 0805
R226
110K 0805
R236
220K 0805
C215
152 / 0805
ON/OFF
C211
1uF/25V
C236
10pF/3KV
ZD203
5.6V
C231
2.2uF/1206
C239
5pF/3KV
ZD201
5.6V
R244
470 1206
C214
0.047uF/0805
CN201
33L8021-2D
-A
C
1
2
C235
104/0805
C208
10pF/3KV
C220
220PF/0805
Q214
RK7002
D202
BAV99
3
1
2
R201
2.2K 0805
D207
BAV99
3
1
2
C242
222 0805
R203
10K 085
R206
0 0805
Q215
RK7002
DIM
C218
NC 0805
C210
104/0805
R240
0
0805
CN205
33L8021-2D-AC
1
2
C243
0.1uF/0805
ZD202
5.6V
R224
3M 1/2W
R209
22 0805
R233
1M 0805
R246
470 0805
R243
1M 0805
JP205
1
2
C233
2.2uF/1206
C202
104/0805
R217
62K 0805
D209
BAV99
3
1
2
Q204 FSI4532
1
2
3
4
5
6
7
8
S1N
G1N
S2P
G2P D2P
D2P
D1N
D1N
R229
NC 0805
C247
0.1uF/0805
C204
10pF/3KV
R216
1M 0805
C245
0.1uF/25V
Q213
RK7002
Q210
FSI4532
1
2
3
4
5
6
7
8
S1N
G1N
S2P
G2P D2P
D2P
D1N
D1N
R225
2M 0805
C240
0.1uF/0805
JP202
1
2
C209
5pF/3KV
R220
22 0805
+
C201 220uF/25V
C219
1uF/0805
C203
2.2uF/1206
R231
1M 0805
C234
2.2uF/1206
R245
NC 0805
Summary of Contents for L1902
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Page 29: ...HP L1902 Service Manual Page 29 of 69 8 2 Power Board 715L1142 C LGH ...
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