ViewSonic Vx2235wm4 Service Manual

							
8. Schematic Diagrams   38
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
DC TO DC
8.1. DC TO DC
5V 3.3V
modify value 6/27
modify value 7/6
5V_PANEL
VDA_1V8 2,3
LCDVDD 3
VDD_CTRL
4
3.3DVCC 3,4,5
DGND 2,3,4,5
adj_BACKLIGHT 4
5V_AMP 5
on_BACKLIGHT 4
DGND
DGND
DGND
+5V
VDA_1V8
DGND
DGND
5V_PANEL
3.3DVCC
DGND
+5V
DGND
DGND
+5V
DGND
DGND
+5VDGND
DGND
DGND
P101
CON9
123456789
Q102
NC/MMBT 3904
B
EC
R111 47K
R109
22K
C108
100nF
R110 220
R102 100
R105 1K
I101 *ATC1084_3Y3_252I
G
O
VIN
GNDVOUT
M1
PIN
R103 0/NC
R112
10K
C107
100nF
L102 200R 2A 0805
M2
PIN
R101
1K
M3
PIN
Q104
MMBT3904
B
EC
R107 0/NC
Q101
NC/MMBT
3904B
EC
R106
100
L101 200R 2A 0805
R104 NC/4.7K
R108 NC/1K
MH1
M32-D80
1
234
5
678
C105
100nFC0603
I102 AP1117CY_1.8I
G
OO1
VIN
GNDVOUT
VOUT
C125
100nF
MH2
M32-D80
1
234
5
678
C103 100nF
C101
100nF12
+
C106
10uF/16V
Q103
AP2305
G
DS
+
C104
100uF/16V
C102
NC/1uF 
						

							
  39
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
INPUT
 
8.2. INPUT
 add R188 add D? add netDVI_DET  +5V change to DVI5V  0616
add C154 ,
Q109
DEL R130,R133,R134,C118,D112,I103
DEL NET DVI5V
hunk 060704
P.4 and P.11 from GND modify NULL  060728
0619-for HDCP
hunk modify add 0603 cap  060728
modify R117 and R119 sch  060731 add R194  060731
HSI_1 PC5V
VSI_1
RXC+RXC- RX2-
RX0+
RX0- RX1-
RX1+ RX2+
SDA SCL
VGA_DET0 4
RX2P 3RX1N 3RX1P 3RX2N 3RX0N 3RXCP 3RXCN 3RX0P 3
DVI5V 4
AHS1 3
SCL_D2 3,4SDA_D2 3,4
SCL_D1 3,4SDA_D1 3,4
PC5V 4
DVI_HDCP 4
AVS1 3VS 4
VDA_1V8 1,3
DGND 1,3,4,5
DVI_DET 4
R1+ 3B1- 3G1- 3B1+ 3G1+ 3R1- 3SOG1 3
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
VDA_1V8
DGND
C111 0.047U
1
2
R114 56
D120
NC
R126 100
D101
5V6AK
R119
75 1%
D102
5V6AK
C112 1000P
1
2
D104
1N/LL4148AK
D121
NC
R125
2K2
R186 0R
R113 56
D107
1N/LL4148AK
R128 0R
C114 0.047U
1
2
C109 0.047U
1
2
Q109
MMBT3904
B
EC
R121 56
D115
NC
D108
1N/LL4148AK
L104 100
C156
NC/5pF
R124
2K2
R115 56
D103
1N/LL4148
AK
D113
5V6AK
D114
NC
C154
0.1uF 
R131 100
C158
NC/5pF
C110 0.047U
1
2
L103 75
D119
NC
D106
1N/LL4148AK
D109
5V6AK
R129 1K
R127 100
C157
NC/5pF
R120 56
D111
5V6AK
C113 0.047U
1
2
D110
5V6AK
D129
5V6AK
R194 1M
R123 100
D116
NC
R118
75 1%
C116
22P12
R117
75 1%
P103
DVI-D123456789101112131415161718192021222324
G2G1
C1C2C3C4C5
RX2-
RX2+
GND
RX4-
RX4+ SCL
SDA
VS
RX1-
RX1+ GND
RX3-
RX3+ 5V
GND HP
RX0-
RX0+ GND
RX5-
RX5+ GND
RXC+ RXC-
Shell Shell
RED
GRN BLU HS
GND
R122 56
D117
NC
R132 100
D122
5V6AK
C115 0.047U
1
2
D105
1N/LL4148AK
C117
220P12
D118
NC
R116 470
R188 100
P102
DB15 HD
162738495
1112131415
10
1617
D123
5V6AK 
						

							
  40
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
SCALER
8.3. SCALER
Closed to Scaler
Pin3.Host interface location
--> 1:112~115,118, 119 ;
0:52~57
Pin5 host interface SEL
--> 1:Parallel ;
0:Serial
R137 R136
HSD220MKW1-A:
R135 NC   R136 137 
0R AUO M220EW01:
R135 137  NC  
R136   NC CMO
M220Z1-L01:
R135 137  0R  
R136   NC
R135
L107  value:80R7/6
RXCN XI
33VRST_REF
RX2P RST_OUT
RX2N
RX0N RX1N
RX0P
B1-
B1+
G1+ G1-
SOG1
R1+ R1- RXO2+
RXO3-
RXE0-
RXEC-
RXE3+ RXEC+
PLL_GND
DGNDDGND
DGND
RXCP
ADC_GND TMDS_VDD
RX1P
RXEC+ RXEC-
RXE3+ RXE0- RXO1-
RXO2- RXO0-
RXO0+
RXO3- RXO1+
RXOC+
RXO3+ RXO3+
RXOC+ RXOC- RXOC-
RXE0+ RXE0+
RXE1-
RXE1+
RXE3- RXE3-
RXE2+ RXE2+
RXE2- RXE2-
XI
AVS1 AHS1 BJT_BRXE1+
RXE1- RXO2-
RXO2+ RXO1+ RXO0+
RXO1- RXO0-
3.3DVCC 1,4,5
RTD_SCLK 4RTD_SCSB 4
SDA_D1
2,4SCL_D1
2,4RX1N
2RX2P
2RX2N
2RX0P
2RX0N
2RXCN
2
RESET_MCU 4
XO_24M
4
SCL_D2 2,4SDA_D2 2,4
B1-
2B1+
2G1+
2G1-
2SOG1
2R1+
2R1-
2
RTD_SD2 4RTD_SD1 4RTD_SD0 4
RXCP
2RX1P
2
LCDVDD
1
AVS1
2AHS1
2
VDA_1V8
1,2
DGND 1,2,4,5
VDA_1V8
3.3DVCC
R3.3DVCC
R3.3DVCC
R3.3DVCC
R3.3DVCC
R1.8AVCC
3.3DVCC
VDA_1V8
GND POWER
DGND
GND POWER
GND POWER
GND POWER
GND POWER
GND_SIGNAL
GND POWER
GND POWER
GND_SIGNAL
LCDVDD
DGND
DGND
GND POWER
R148 0RC139
100nF
C138
100uF/16V
+
C135
10uF_16V
P104LVDS_CON30
302928272625242322212019181716151413121110987654321
30 29
28
27
26 25 24
23
22
21 20 19
18
17
16 15 14
13
12
11 10 9
8
7
6 5 4
3 2
1
C128
100nF
C136
100nF
R150 0R
C127
100nF
L105 80R 0805
C137
100nF
R151 22R152 22
C124
NC/22pF
C121
100nF
C133
100nF
R149 NC
L107 80R 0805/NC
RTD2553V 
I104
2221232437252627382829313940510761389161112141517181271281261252341
47
46
59728395108
60718496107
5051
57
55545352
48
58616263646566676869
1211207374757677787980818285868788899091929394979899100101102103104105114115118119122123124113112
1920303332363534
56
49
106109110111
116
117
70
ADC_GND ADC_VDD
B0+
B0-
ADC_GND SOG0
G0+
G0-
ADC_VDD R0+
R0-
B1+ / V6
AHS1 / V0
AVS1 / VCLK TMDS_TST / PWM0 / TCON2
TMDS_GND TMDS_VDD REXT
TMDS_VDD RX2P
RX2N
TMDS_GND RX1P
RX1N
RX0P
RX0N
RXCP
RXCN XO
XI
DPLL_GND DPLL_VDD
APLL_VDD
PLL_TEST1 / TCON0 / TCON3
PLL_TEST2 / TCON1 / TCON12 APLL_GND
VCCK
GNDK
PVCC
PVCC
PVCC
PVCC
PVCC
PGND
PGND
PGND
PGND
PGND
DDCSCL1 / TCON4
DDCSDA1 / TCON9
SCLK / TCON3 SDIO[3] / TCON0 SDIO[2] / TCON11
SDIO[1] / TCON7
SDIO[0] / TCON13
PWM1 / TCON0 / COUT
BJT_B
BB3P/BBLU7
BB3N/BBLU6
BB2P/BBLU5
BB2N/BBLU4
BB1P/BBLU3
BB1N/BBLU2
BCLKP/BGRN7
BCLKN/BGRN6
BG3P/BGRN5
DDCSCL2 / VCLK / TCON4
DDCSDA2 / V7 / TCON6
BG2P / TXE3+BG2N / TXE3-
BG1P / TXEC+ BG1N / TXEC-BR3P / TXE2+ BR3N / TXE2-
BR2P / TXE1+
BR2N / TXE1-
BR1P / TXE0+ BR1N / TXE0-
AB3P / TXO3+
AB3N / TXO3-
AB2P / TXOC+ AB2N / TXOC-
AB1P / TXO2+
AB1N / TXO2-
ACLKP / TXO1+ ACLKN / TXO1- AG3P / TXO0+AG3N / TXO0- AG2P
AG2N AG1P
AG1N AR3P
AR3N AR2P
AR2N
AR1P
SDIO[2] / V3 / TCON5 SDIO[3] / V4 / TCON9
SCSB / V5  / TCON7SCLK / V6 / TCON3 TCON9 / PWM0
RESET_OUT
33VRST_REF
SDIO[1] / V2 / TCON8
SDIO[0] / V1 / TCON10/PWM2
AVS0
AHS0
B1- / V7
G1+ / V4 G1- / V5
R1+ / V1 R1- / V2
SOG1 / V3
SCSB / TCON12
PWM2 / TCON1/TCON7
AR1N
33VPNLOUT
TCON13 / COUT
V0 / TCON2/PWM1
VCCK
GNDK
BG3N/BGRN4
C123
100nF
R147
1K
R136
15K
R137
4.7K
R138
4.7KR135 0
R145
4.7K
C134
100nF
L106 80R 0805
R144
NC/4.7K
+C122
10uF_16V
R142 22
C130
100nF
R143
NC/4.7K/
R141
30K
R140 22
C120
100nF
R146
NC/4.7K
R185 1K
C129
100nF
+C126
10uF_16V
C119
100nF
C132
100nF
C131
100nF
R139 0
RTD_SD3/SDI 4 
						

							
  41
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
MCU
 
8.4. MCU
2
3
1
C E
B Closed to MCU
3.3V
add netDVI_DET  0616
r170.r179~modify value 330R for 5mA 0627
add R189 res pull high 0630
hunk 060704
P6.1 change to P6.2
MCU pindefine changeP3.4 change to P6.0
P3.5 change to P6.1
1
25
P3
雙向P5單向
13
24 37
P6
單向
MTV512M-LQFP4848
X1,X2 36
P1
雙向
12
ADD pull high
hunk 060704
ADD NET
HDCP_SCL
HDCP_SDA
HDCP EEPROM HDCP
EEPROM
R192 , R193
ADD
R190 , R191, C155 , I107
MUTE_S  pin change to mcu p3.3 MUTE  pin change to mcu p5.0
hunk 060706
RX TX
POWER UP
IICSCL
IICSDA
GREEN
ORANGE
RESET
RESET
ORANGE
HDCP_SDA
DOWN
LED_GREEN
LED_ORANG
POWER MENU UP
DOWN
LED_GREEN
LED_ORANG
SELECT GREEN
HDCP_SCL
MENU SELECT
MUTE
MUTE
SDA_D1
2,3SCL_D1
2,3SCL_D2
2,3SDA_D2
2,3
XO_24M 3
on_BACKLIGHT
1
VOLUME
5
adj_BACKLIGHT
1
RTD_SCSB 3RTD_SCLK 3RTD_SD2 3RTD_SD1 3RTD_SD0 3
VDD_CTRL 1
DVI_HDCP 2
PC5V2DVI5V2
3.3DVCC
1,3,5RESET_MCU
3
VGA_DET0 2
VS 2
DVI_DET 2
DGND 1,2,3,5
MUTE_S
5
+5V+5V
3.3DVCC
3.3DVCC
+5V
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
DGND
VCC_MCU
VCC_MCU
VCC_MCU
R176 100
R166
2.2K
C149
100nF
D1261N4148A
K
C140
100uF_16V
R165
2.2K
R180 10K
R182
4.7K
C148
100nF
RP01 10K_RP
18273645
I105
*24LC168564
7321
VCC
SDA
SCL
GND WP
A2
A1
A0
R193
10K
+C142
10uF/16V
C141
100nF
R192
10K
C153
100nF
X101
24MHz
1
23
C147
100nF
R161 22R160 22
R179
820
MCU
I106
MTV512/RTD21204445464748123
4
8
15
16
17
41
4039383736353433
32
28292021222324252627
591011121314
6
P5.0/DA0
P5.1/DA1
P5.2/DA2
P5.3/DA3
P5.4/DA4
P5.5/DA5
HSCL2/P5.6
HSDA2/P5.7
RST
HDA1/TX/P3.1
XTAL2
XTAL1
VSS VCC
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
NC
VSYNC
NC
P6.0/AD0 P6.1/AD1
P6.2/AD2 P6.3/AD3 P6.4
P6.5
P6.6/CLK0 P6.7
HCL1/RX/P3.0 P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
P7.6/CLKO
P7.7
NC
R153 100
Q106
2N3906
B
EC
D1251N4148A
K
R159
10K
RP04
10K_RP18273645
P105
1
2
3
4
5
6
7
8
9
10
R154 100
C155
NC/100nF
R170
820
R190 NC/100
I107
NC/AT24C04N-10SC
1234
5678 A0
A1
A2
GND
SDA SCL WP
VCC
Q108
2N3906B
E
C
R191 NC/100
C143
100nF
C145
10pF
C150
100nF
Q1072N3906B
E
C
R157
10K
R1834.7K
R171 10K
R187 100
C146
100nF
C151
100nF
Q105
2N3906
B
EC
C144
10pF
D1241N4148A
K
R175 100R181
4.7K
R162 0
R174 100
RP05
10K_RP
18273645
R156
2.2K
C152
100nF
R155
2.2K
R173 100
D127 1N4148AK
R1671K
R184 4.7K
R169
10K
RP0210K_RP
18273645
R158
10K
R172 100
R163 22
R168 6.8K
R177 100
D128
1N4148AKR164 22
R178 100
RP03
10K_RP
18273645
R189
10K
RTD_SD3/SDI 3 
						

							
  42
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
AUDIO AMPLIFIER
8.5. Audio Amplifier
5/20 ADD   PCB
對 板邊接地
0525   modify value modify value 0616
41
2
SOLDER
SIDE 5
351
2
SOLDER
SIDE 3
4
now pin define
correct pin define
layout modify pin define
modify value 0627
modify value 0627
modify value 0627
 from two smt 0805 bead modify dip type and make a drill include of the \
cap 1500UF  060728
DEL C604 , C623
hunk 060706
7/28 cap package change to 0603
MUTE_SAVOR
AVOL
MUTE_S
4
VOLUME
4
5V_AMP
1
3.3DVCC
1,3,4
DGND 1,2,3,4
5V_AMP
DGND
DGND
+5V
DGND
GND_PG
DGND
DGND
DGND
3.3DVCC
+5V
AMP_VCC
AMP_VCC
DGNDDGNDDGNDDGND
DGND
DGND
DGND
DGND
R611
47K
L605 15uH
S R
RS
LS L
P601AUDIO INPUT (GREEN)
45321
P602
 P=2.0mm4321 R+
R-
L-
L+
C615
1UF
R610 100K
L603 15uH
C611
0.1u 0805
L606 15uH
R604
NC/1K
R612
10KC617
1UF
R607
4.7K
L604 15uH
R615
10K
+
C601
1500uF/10V
R602
10K/NC
C602
100n
C620
220P 0603
C609
10n 0603
C613
1UFL607 80R DIP
R601NC/10K
C624
0.1u 0805
R616
33R
Q601
NC/MMBT3904 SOT-23
B
CE
C612
1000P
C619
0.1u 0805
C614
10n 0603
C616
0.1u 0805
C605
1UF 0805
C621
1000P
I601TPA2 008D2
5
8
3
20
2
7
23
1
6
18
19
10
4
24
9
21
22
17
16
15
11
12
14
13
25
LOUTP
LOUTN SHUTDOWN
ROUTP
LINP
PGND RINP
LINN
PGND
PGND PGND
COSC PVDD RINN
PVDD PVDD
BYPASS
ROUTN PVDD
NC
ROSC
AGND VOLUME
VDD
GND
+C627
47uF/16V
C618
10n 0603
C625
1UF 0805
C608
1UF 0805
R613 NC
C606
1UF 0805
R609
47K
R603
0
R608
100K
C622
10n 0603
C626
1UF 0805
E B C
SOT
23
Q602
MMBT3904
B
C
E
C610
1UF
R614 10K
C603
1uF 
						

							
  43
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
PLACEMENT
 
8.6. PLACEMENT
JP1 AMP
120
1011
DC power IN
1
9
LVDS output connector
X1 MCU
D-SUB
DVI
KEY connector
10 1
4 1
Speaker
RTD 2553V
100mm
90mm
Earphone 12
930
2
9PIN
改 
						

							
  44
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
KEY BOARD
8.7. Key Board
D701
LED
2
3
1
S704
SW
12
S702
SW
12
P701
wafer 2.0mm 90
87654321
SELECT
DOWN UP
MENU GND
LED_GREEN
LED_AMBER POWER
S705
SW
12
S703
SW
12
S701
SW
12 
						

							
  45
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
INVERTER
8.8. INVERTER
Brightness
24V
ON_OFF
5V
D908
1N4148
C925
0.1uF
C913
0.01uF
R903
200K 1%
Q912
AP4953M/SO8
6
54
3
7
81
2
+
C922
220U/25V
Q902
2SA733
3
1
2
C912
0.01uF
C901
47nF
C902
15P,3KV
T901
23743 01604P
7
6
10
12345
Q905
P2804HVG
6
54
3
7
81
2
D913
1N4148
D915
1N4148
C909
2200P
R908
10K
C920
2200P
C919
4700pF/50V
D912
1N4148
C908
4700pF/50V
C923
2200P
I901
OZ9936G
1234
5678
SST
RT
GNDA
DRV2 DRV1 VCCAVSEN
ISEN
Q906
AP4953M/SO8
6
54
3
7
81
2
R909
3.01K/1%
D910
1N4148
R902
2K
C916
15P,3KV
Q901
2SC945P
3
1
2
L901 jumper
C910
0.01uF
P9011
2
+C907
220uF/25V
R907
1K
C917
1000pF
R920 2K
C927
2200P
R937
392R/1%
R928
jumper
C918
5P,3KVC903
15P,3KV
P9031
2
R914
3.3K
R929
10K
C92468nF
Q915
2N70003
12
D917
1N4148
Q913
2SA733
3
1
2
D905
1N4148
Q911
P2804HVG
6
54
3
7
81
2
D902
1N4148
+C906
220uF/25V
Q910
2SC945P
3
1
2
D906
1N4148
C915
15P,3KV
L902 jumper
P9021
2
C911
0.1UF
R906
1K
Q907
2SC945P3
1
2
R918
97.6K 1%
R910
jumper
+C904
470uF/35V
C928
0.1uF
R927
3.01K/1%
R936
NC
D909
1N4148
T902
23743 01604P
7
6
10
12345
D918
1N4148
D907
1N4148
D916
1N4148
Q908
2SC945P3
1
2
C905
5P,3KV
R924
1M
Q909
2N7000
3
12R913
10K
D911
1N4148
R905
3M,3KV
C914
0.1UF
+C926
470U/35V
P9041
2
+C921
220U/25V
R925
3M,3KV
R901
10K 
						

							
  46
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
Model
TitleDate Rev:ViewSonic Corporation
POWER
 
8.9. POWER
24V5V
5V
GND
GND
5 V
Brightness
ON_OFF
24V
+
C805 120uF/400V
R851
1.21K 1%
R809
10K
R842
1K
D806
UF4007
R808
100K/1%
R838
470R
+
C823
470uF/35V
R803
910K
R821
22 1/2W
+
C822
470uF/35V
R811
0.47R/ 2WS
R822
 47 2WS
L803
jumper
R828
62K 1%
D821
GMR10H200C
1
3
2
C828 NC
R832
470R
C820
1000PF/1KV
C804
0.1uF
+
C8241000UF/10V
Q801
FQPF7N65C1
23T801 DS-33193125
9768
R854
100
+
C829
470uF/35V
R839
392K 1%
-+
D801
GBU4K
2
1
3
4
R831
100
R807 39
T2.5A/250V F801
+
C825
470uF/16V
R844
392K 1%
R834
100K/1/4WS
R824
3.9K 1%
R810
NC
C801
0.22uF
C832
NC
R823
270
D822
SB1060FCT1
3
2
C803
2200pF
Q802
2SC945
3
1
2
Z801
HZ24A-3
R820
47 2WS
R833
100K/1/4WS+
C810
22UF/50V
R812
910K
C806
1000PF/1KV
Z802
HZ24A-3
+C809 NC
JUMPERF802
R805
392K 1%
L804
5.2UH
+
C827
10UF/50V
C807
2200pF
R836
100K/1/4WS
I802
TLP621
43
12
P8029 8
7 6 5
4
3
2 1
C831
10000pF
C821
1000PF/1KV
C813
2200pF
R850 NC
L805
ET24
3
2
4
1
Z803
RLZ27B
P801AC IN 100~240V
3
1
2
N L
FG
L801
3.5*4.5*0.8
+
C8301000UF/10V
C802
2200pF
R806 10K
R827
1K
L806
3Ts 6*10
TL431DI803
D807
UF4004
R837
470/2W
R835
100K/1/4WS
R825
1.21K 1%
R802
10 3A
C826
0.1U
C808 470PI801
LD7575
6
5
8
2
4
1
7
3 Vcc
Drv HV
FB
GND Adj NC
CS 
						

							
9. PCB Layout Diagrams   47
 
ViewSonic Corporation   
Confidential - Do Not Copy    
VX2235wm-4 
9.1. MAIN PCB TOP VIEW