Schematic; Main Board - Asus VG27WQ1B Service Manual

Service Manual

5. Schematic

5.1 Main Board

715GB217M0CB00005K
FUSE 4A
CN1002
ISE request part
F1002
1
250 mils T4AL 250V
2 19V_IN
3
4
F1003
5
500 mils 250 mils T4AL 250V
6
7
FUSE
4A
C1009
100N 50V
500 mils
19V_GND
R1004
0R05
+5V Standby Power
+19V_SB
C1014 C1015 C1016 ZD1002
10UF 25V 10UF 25V 0.1uF 25V RLZ5V6B
+5VSB_SS
19V_SBPH
R1010
100K
C1022
6.8nF 50V
+5VSB_EN
R1015
30K OHM
1A
+3.3V Standby Power
Vout=0.6 x [1 + (200/44.2)] = 3.3V
+5V_SB
U1003
MP1601NGTF-C734-Z
3 4
+33VA_SW
VIN SW
2 5
GND EN
1 6
C1023
FB OUT
10uF 16V
R1022
10K 5%
+33VA_FB
+33VA_EN
R1026 C1041
100K NC
3A
1.5V Normal Power for DDR3
R1030
100K
+5V_SB
U1005
MP1603GTF-Z 6.5V
3 4
VIN EN
2 5
SW FB
C1042 C1043 1 6
GND OUT
10uF 16V 10uF 16V
+15V1_SW
PWR_CTRL_DDR
R1032
NC
Remove FB1001
7.7mm 71W 250 mils
19V_IN1
7.7mm 66W 250 mils
19V_IN2
C1002 C1003 C1006
MAX 4.7A/10mm L1002 1N 50V 100N 50V 220UF 35V
C1010 4.7UH
100N 50V
500 mils
Vout=0.8 x [1 + (40.2/7.5)] = 5V
R1005 C1013
U1002
20R 1uF 50V
2 5
+5VSB_BST +5VSB_BSTR L1003
VIN BST
6.8uH
1 3 +5VSB_SW
PG SW
6 8 +5VSB_FBR
EN FB
7 4
C1017
SS GND
10PF 50V R1009
40.2K 1%
MP2330GTL-Z 24V 3A
R1013
+5VSB_FB
15K
R1016
7.5K 1%
VCC3.3VA
3,4,7,8,10 VCC3.3VA
L1004
2.2uH
C1024
10uF 16V
C1031
R1021 1N 50V
200K 1%
R1025
44.2K 1%
Vout=0.6 x [1 + (200/130)] = 1.52V VCC1.5V_1
3 VCC1.5V_1
L1006
2.2UH
+15V1_FB
C1044 C1045 C1099
10UF 10V 10UF 10V 10UF 10V
R1031 C1046
200K 1% 1N 50V
C1047 R1033
NC 130K
+19V_SB
+19V_SB 8,10,14
+ C1004 C1005 C1007 R1002
1uF 50V NC/10UF 25V 1uF 50V 47K 1/8W
19V_BL_QG
R1003
100K OHM 5% 1/8W
Soft start
+5V_SB
VCC3.3VA
4,5,6,7,12,13 +5V_SB
R1006
10K 5%
PD_CTLZ
C1018 C1019 C1020 C1021
10uF 16V 10uF 16V 10uF 16V 10uF 16V
Q1003
2N7002K
4.1A
+1.0V for Scalar
+19V_SB
C1025 C1026 C1027 C1028 C1029
10UF 25V 10UF 25V 10UF 25V 10UF 25V 0.1uF 25V
C1032
1uF 16V
R1023
NC
PD_CTLZ
R1027
100K
C1098 C1097
10UF 10V 10UF 10V
22
+19V_BL
Q1002
AO4407A
1 8
+19V_BL 9
2 S1 D1 7
S2 D2
3 6
S3 D3
4 5
G D4
C1008
47pF 50V
C1011 C1012
100N 50V 10UF 25V
VCC3.3VA
R1007
10K 5%
R1008
PWR_CTRL_DDR
10K 5%
R1011
PD_CTL1 Q1004
10K 5%
R1014 PD_CTL_DDR0
Q1005 1K 2N7002K
PD_CTL0
PD_CTL 7
LMBT3904LT1G
High = On
Low = Off
R1018 NC
R1020
0R05 OHM
+1V_BST +1V_BSTR
+1V_VCC
U1004
C1030
MP2329GG-Z
220NF 50V
L1005
0.68uH
8 6 +1V_SW
VCC SW
R1024 C1033
0R05 OHM 22P 50V
11 +1V_FBC
EN
C1034
10uF 16V
C1040
10
+1V_FB R1028
FB
10UF 6.3V
40.2K 1%
5
PG
R1029
63.4K ohm 1%
ASUS VG27WQ1B
R1012
0R05 OHM
PD_CTL_DDR 7
R1017 NC
R1019
100K
Vout=0.6 x [1 + (40.2/63.4)] = 0.98V
+1.0V_VDDC
3 +1.0V_VDDC
C1035 C1036 C1038 C1037 C1039
10uF 16V 10uF 16V 10uF 16V 10uF 16V 10uF 16V