Service manual

Schematic Diagrams
B - 36 +VDD3, +VDD5, +VDD12
B.Schematic Diagrams
+VDD3, +VDD5, +VDD12
+VDD5
+VDD5
VL
+VIN1
+VDD3
VL
VL
+VIN
+VIN
VL
VL
+VIN1
+VINA
+VA
+VIN [25,26,31,32,33,34]
+VDD5 [2,8,26,31,32,33,34]
+VDD3 [8,17,18,31]
TRMTRIP# [4]
+VA [26]
+VIN [25,26,31,32,33,34]
+VINA [31]
+VDD5_PG [17]
Z3605
Z3614
Z3616
Z3615
V+
Z3609
Z3608
Z3610
Z3621
Z3612
Z3601
Z3607
Z3619
Z3606
Z3620
Z3611
V+
Z3613
Z3617
Z3618
Z3624
Z3622
Z3623
Z3602
Z3604
Z3603
L38
4.7UH
C722 33P
C713
*100p_04
C717
0.01u_04
Q83A
SP8K10
7
8
1 2
Q83B
SP8K10
4
3
5 6
C726 0.1u_04
C727 0.1u_04
C732 0.1u_04
J9
OPEN_4A
1 2
U28
LTC3728LX
24
26
25
22
30
31
3
23
1
2
5
4
7
6
20
17
14
15
18
12
11
9
8
21
28
13
27
19
10
16
29
32
BOOST1
TG1
SW1
BG1
SENSE1+
SENSE1-
PLLIN
VIN
VOSENSE1
PLLFLTR
ITH1
FCB
3.3VOUT
SGND
INTVCC
BOOST2
TG2
SW2
BG2
SENSE2+
SENSE2-
VOSENSE2
ITH2
EXTVCC
RUN/SS1
RUN/SS2
PGOOD
PGND
NC
NC
NC
NC
C654
0.01u_04
R424 15K_1%_04
R416
19.1K_1%
C648
10u/25V_12
R384
10m_2512
C695
10u_08
R428 0
R404 1M
C731 0.1u_04
R410 0
C698
0.1u
+
C636
*220U/6.3V_D
D42
SCS551V
A C
PJ1
OPEN_4A
1 2
C702
1000p_04
C688
0.1u
C652
0.1u
C696
0.1u
R408
105K_1%
R426
*0
C725 0.1u_04
C708
1000p_04
D41 SCS355V
A C
R402 1M
D43 SCS355V
A C
+
C635
220U/6.3V_D
C687
0.01u_04
C278
0.1u_04
+
C661
220U/6.3V_D
C700
10u/25V_12
C720
100p_04
R427 0
C699
10u/25V_12
C712
2200p
R425
15K_1%_04
Q82A
SP8K10
7
8
1 2
Q82B
SP8K10
4
3
5 6
R414
18.7K_1%
R422
*0
Q84
2N7002
G
DS
C649
10u/25V_12
C703
0.1u_04
C693
0.1u
Q85
2N7002
G
DS
C694
0.1u
R412
10K_04
C707
0.1u_04
R411
10K_04
R392
0
Q86
2N7002
G
DS
+
C653
*220U/6.3V_R
C275
0.01u_04
L37
4.7UH
R388
10m_2512
R401 *0
C714
33P
D44
SCS551V
AC
R421
60.4K_1%
C716
1000p_04
C697
0.01u_04
C721 33P
+VDD3,+VDD5,+VDD12
4A
Open for burst mode
5V for constant mode
PLLFLTR:0V for 220KHZ
5V for 640KHZ
4A
4A
2A
2A
FCB:0V for continuous mode
4A
Sheet 35 of 44
+VDD3, +VDD5,
+VDD12