Schematic Diagrams
GFX_VCORE B - 33
B.Schematic Diagrams
GFX_VCORE
PQ8
*2N7002W
G
D
S
PR48
*10K_04
VGAPWR_EN
PR57
100K_04
PJ5
20mil
1
2
1220
DFGT_VID_4
7
PL3
*1uH _7*7*3.5
1
2
5V
PR
5
1
*1
20K
_1%_
0
4
PR49
*16.2K_1%_06
PR41
*100_1%_04
+
P
C
129
*8
2
0
U
_
2
.5V
_8*
8
VGFX_CORE
3.3VS
PJ12
OPEN_6A
1
2
PQ
2
9
*A
O
447
4
4
6
2
5
7
3
1
8
P
C
99
*4
.7
U
_25V
_X
5R
_08
DFGT_VID_3
7
PD2
*FM0540-N
A
C
PC
3
4
*.
0
1
U
_
16V
_X
7R
_04
GC
L
S
E
T
PJ3
20mil
1
2
P
C
11
8
*.
01U
_50V
_X
7R
_04
Z3214
Z3211
PR39
*10K_04
PJ23
OPEN_8A
1
2
P
C
12
3
.01U
_16
V
_
04
Vout = 1.24V ( 1 + Ra / Rb )
Note: All Grounds Tied together at output Caps.
DFGT_VID_2
7
Z3201
PC19
*1U_25V_08
8A
5V
PR
5
4
*1
30K
_1%_
0
4
3.3V
3,14,15,16,17,18,19,24,28,30,31,34,35,37
PD10
*FM5822
A
C
PU2
*SC472B
1
2
3
4
5
7
8
11
12
13
14
15
16
17
18
19
20
21
22
23
24
10
9
25
6
VID4
VID3
VID2
VID1
VID0
C
L
SET
VR
EF
FB
-
SS
FB+
CS-
CS+
RAMP
EN
PGD
PM
O
N
V5
BG
DR
N
TG
BS
T
E
R
RO
UT
AG
N
D
GN
D
HY S
P
C
2
7
*1
0
0
P
_50V
_04
PR46
*5.1K_1%_06
PR
5
2
*1
3
0
K
_1%_04
PR53
*47K_04
E_
O
U
T
PQ
2
8
*A
O
4456
4
6
2
5
7
3
1
8
VIN
14,28,29,30,31,33,34
GV
R
E
F
DFGT_VID_0
7
Z3208
P
C
12
8
.01U
_16
V
_
04
PR45
*18.2K_1%_06
PC24
*.1U_16V_04
P
C
12
4
.01U
_16
V
_
04
DFGT_VID_1
7
GPU
P
C
35
*.
1U
_1
6V
_04
VDD3
3,15,27,28,29,34
PJ6
20mil
1
2
GFX_VCORE
3.3VS
2,3,6,7,10,12,13,14,15,16,17,18,19,20,22,23,24,25,26,27,28,33,36,37
GPU
P
C
11
6
*4.
7U
_25V
_X
5R
_08
PR50
*47K_04
GPUVSSSENSE 9
PR37
*10K_04
5V
18,20,21,25,28,29,30,31,33,34,35,37
PR44
*33K_1%_06
PR56
*0_06
Z
3203
P
C
12
6
.01U
_16
V
_
04
P
C
29
*100P
_50
V
_
04
PR32
*0_04
0328 D03 BOM DEL
Z3207
PC17
*1U_25V_08
PC22
*100P_50V_04
PC
2
6
*100P
_50
V
_
04
PJ4
20mil
1
2
0317 D03
PC18
*1U_25V_08
PQ7
*2N7002W
G
D
S
GVREF
PR34
*10K_1%_04
P
C
30
*100P
_50
V
_
04
GPUVCCSENSE 9
P
C
46
*.
1U
_
50V
_06
PC25
*22n__50V_X7R_06
PR36
*100_1%_04
VGAPWR_EN
PR33
*0_04
PJ7
40mil
1
2
Z3212
DRN
DRN
Z
3206
+
P
C
125
*8
2
0
U
_
2
.5V
_8*
8
0124
VGFX_CORE 9
1.05VM
Z3209
RAMP
PR42
*22K_04
DEL 2.5VS
PC21
*100P_50V_04
GSS
VDD5
20,28,29
RAMP
PR35
*22K_04
P
C
11
7
*.
01U
_50V
_X
7R
_04
P
C
3
1
*1
0
0
P
_50V
_04
0114
Z
3202
Z
3205
PR47
*22K_04
P
C
28
*.
01
U
_
1
6
V
_
X
7
R
_
0
4
PR
5
9
*8
.2
K
_1%_
0
4
Z
3204
P
C
3
3
*100
0P
_50V
_04
P
C
12
7
.01U
_16
V
_
04
PC23
*1000P_50V_04
P
C
3
2
*560P
_
50V
_X
7R
_
0
4
Z
321
3
PR38
*22K_04
PR55
*0_04
PR43
*0_04
P
C
12
2
*4.
7U
_25V
_X
5R
_08
PR40
*22K_04
1.05VM 7,9,10,28,30
PJ2
20mil
1
2
PC20
*1000P_50V_04
DFGT_VR_EN 7
VIN
GHY S
PR
5
8
*100
K
_
04
Sheet 33 of 48
GFX-VCORE
Summary of Contents for L390T
Page 1: ......
Page 2: ......
Page 3: ...Preface I Preface LCD Computer L390T Service Manual...
Page 26: ...Introduction 1 12 1 Introduction...
Page 51: ...Part Lists LCD L390T A 3 A Part Lists LCD L390T 3 Figure A 1 LCD L390T...
Page 52: ...Part Lists A 4 Stand L390T A Part Lists Stand L390T Figure A 2 Stand L390T...
Page 53: ...Part Lists Back Fan 1 L390T A 5 A Part Lists Back Fan 1 L390T Figure A 3 Back Fan 1 L390T...
Page 54: ...Part Lists A 6 Back Fan 2 L390T A Part Lists Back Fan 2 L390T Figure A 4 Back Fan 2 L390T...
Page 55: ...Part Lists DVD L390T A 7 A Part Lists DVD L390T Figure A 5 DVD L390T...
Page 56: ...Part Lists A 8 Combo L390T A Part Lists Combo L390T Figure A 6 Combo L390T...