Read Panasonic CF-18 (serv.man6) Service Manual Simplified online
Main 31 2.5V 1.25V DC/DC
R349
4.7K
1%
DCIN&BATT
C468
10u
10u
25V
B
3225
C451
NU
LTC1778EGN#TR
IC51
LINEAR TECH.
SSOP16(1.75mH)
1 RUN/SS
2 PGOOD
3 VRNG
4 FCB
16
BOOST
15
TG
14
SW
13
PGND
5 ITH
6 SGND
7 ION
8 VFB
12
BG
11
INTVCC
10
VIN
9
EXTVCC
SLP_S4#
10:F3.18:F4.35:A3.35:B9.35:D3
C465
0.22u
0.22u
2125
C462
NU
NU
C446
470p
2SK3019TL
Q49
2
3
1
50V
C464
0.1u
0.1u
1608
R358
10K
1%
VB5
C463
0.01u
0.01u
C450
100p
6.3V
C469
10u
10u
2125
PGND
R360
10
10
R352
22K
VB25
R359
1M
FDS6690A
Q51
Fairchild
SOP8
Nch-MOSFET
1 S
2 S
3 S
4 G
8
D
7
D
6
D
5
D
FDS6690A
Q50
Fairchild
SOP8
Nch-MOSFET
1 S
2 S
3 S
4 G
8
D
7
D
6
D
5
D
SGND
C445
4700pF
B
1608
6.3V
C466
10u
10u
2125
UNR9213J0L
Q48
Q48
3
1
2
R347
470K
DCIN&BATT
A915AY-1R1M=P3
L26
1
2
PGND
PGND
PGND
PGND
VB25
R355
5.1K
R357
1M
C447
220p
R356
330K
VC125
C448
2200pF
B
1608
C449
100p
SGND
MEMREF
NJM12904V(TE1)
IC53
-
2
1
O
+
3
NJM12904V(TE1)
IC53
-
6
7
O
+
5
NJM12904V(TE1)
IC53
V-
4
V+
8
VB25
SGND
VB5
SGND
R361
10K
1%
R362
10K
1%
DCIN&BATT
R187
470K
UNR9213J0L
Q13
Q13
3
1
2
2SK3019TL
Q18
2
3
1
SLP_S3#
MEMREF_DIMM
R188
10K
1%
VB25
SGND
R189
10K
1%
C3
0.1u
0.1u
4V
C471
150uF
150uF
SPCAP
D
+
4V
C470
NU
NU
SPCAP
D
+
R548
10
10
R549
10
10
2V
C467
180u
180u
SP-CAP
+
EP10QY03-TE8L3
D22
2
1
B1000AS-4R7M=P3
L27
8.1x8.0x5.0
1
2
1SS357(TPH3F)
D21
1
2
LTC3413EFE#TR
IC52
LINEAR TECH.
T
SOP16(1.15mH)
1 SVIN
2 PGOOD
3 ITH
4 VFB
16
PVIN
15
SW
14
SW
13
PGND
5 RT
6 VREF
7 RUN/SS
8 SGND
12
PGND
11
SW
10
SW
9
PVIN
17
PKGGND
-
VB25=2.5V+125mV@6A
-
Vout=0.8*(1+RH/Rl)
Vref=0.792
0.808V
RH=9.9
10.1Kohm
RL=4.653
4.747Kohm
Vout=Vref*(1+RH/RL)
Vout=2.4437
Vout=2.4437
2.5619V
(SPEC Vout=2.375
2.625V)
1
2
3
4
5
6
7
8
9
10
11
A
B
C
D
E
F
G
H
I
J
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