ViewSonic Va703b3 Service Manual

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  Confidential - Do Not Copy  VA703b-3_VA703m-3 
 
1152*870@75Hz 
75.062 −
 
915 870 3  39   
60.000 +  1800 1280 112  312 VESA 
1280*960@60Hz 
60.000 +  1000 960  3  36  108.000 
75.000 +  1800 1280 112  312 1280*960@75Hz 
75.000 +  1000 960  3  36  130.000 
63.981 +  1688 1280 112  248 VESA 
1280*1024@60Hz 
60.020 +  1066 1024 3  38  108.000 
79.976 + 
1688 1280 144  248 VESA 
1280*1024@75Hz 
75.025 + 1066 1024 3  38  135.000 
 
4. Power On/Off Sequence 
4.1 Hardware Power...

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6. Inner Connector Pin Assignment 
 
6.1 CN501, CN502, CN503, CN504 (Connect to Panel Backlight, SM02B-BHSS-1-TB or equivalent) 
Pin Symbol Description 
1  H.V.  High voltage for lamp 
2 L.V.  Low voltage for lamp 
 
6.2 CN101 (Power BD to Interface BD) 
Pin No. Symbol Description 
1 VCC5V +5.1V  INPUT 
2 VCC5V +5.1V INPUT 
3 GND GND 
4 ON/OFF  CCFL on/off control 
5  BRIGHTNESS  Panel luminance control (CCFL brightness) 
6...

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 12  RXE0-  minus signal of even channel 0(LVDS) 
13  RXE0+  plus signal of    even channel 0(LVDS) 
14 GND  Ground 
15  RXE1- minus signal of even channel 1(LVDS) 
16  RXE1+  plus signal of even channel 1(LVDS) 
17 GND  Ground 
18  RXE2- minus signal of even channel 2(LVDS) 
19  RXE2+  plus signal of even channel 2(LVDS) 
20  RXEC- minus signal of even clock channel (LVDS) 
21  RXEC+  plus signal of even clock channel (LVDS)...

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pulse input for dimming function 
5  ISEN  I  Current sense feedback   
6  VSEN  I  Voltage sense feedback 
7  OVPT  I  Over-voltage/over-current protection threshold setting pin 
8 NC    
9 NC    
10  ENC  I  ON/OFF control of IC 
11  L C T   I   Timing capacitor to set internal PWM dimming frequency and 
also a pin for analog dimming selection   
12  SSTCMP  I  Capacitor for soft start time and loop compensation 
13  CT  I...

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31 DDCA_SCL/RS232_RX  I/O  DDC Clock for Analog Interface/UART 
Receiver/GPIO 
32  VDDP 
I  Digital Output Power 
33 GND    Ground 
34 VDDC I  Digital Core Power 
35 GPIO_P15/PWM0  I/O  General Purpose Input/Output; 4mA driving 
strength/Pulse Width Modulation Output; 4mA driving 
strength 
36 NC 
  Not Connected 
37  SDO I  SPI Flash Serial Data Output 
38  SCZ O  SPI Flash Chip Select 
39  SCK O  SPI Flash Serial Clock 
40...

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71  LVB2P  O  B-Link Positive LVDS Differential Data Output 
72  LVB2M  O  B-Link Negative LVDS Differential Data Output 
73  LVB1P O  B-Link Positive LVDS Differential Data Output   
74  LVB1M  O  B-Link Negative LVDS Differential Data Output   
75  VDDP  I  Digital Output Power 
76 GND    Ground 
77  LVB0P O  B-Link Positive LVDS Differential Data Output 
78  LVB0M  O  B-Link Negative LVDS Differential Data Output 
79 GND...

 
ViewSonic Corporation
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1.  Key Function Description 
CONTROL KEY KEYS FUNCTION 
[AUTO] [2]  By pressing [AUTO] key,  “Auto Image Adjust” is performed 
[MENU] [1]  By pressing [MENU] key, Main menu display   
[▼ ] [▲ ]  A. When “MENU OSD” display, press these keys to change the contents of an 
adjustment item, or change an adjustment value 
B. When “MENU OSD” is un-display, press these keys to change brightness and  contrast 
[POWER]  Power on or power...

  
ViewSonic Corporation
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Sharpness + / - 
English 
French 
German 
Italian 
Spanish 
Finnish 
Japanese 
Simplified Chinese 
Language Select 
Traditional Chinese 
Resolution Notice  On/Off 
H Position (+ / -) OSD Position 
V Position (+ / -) 
OSD Time Out   
Setup Menu 
OSD Background On/Off 
Memory Recall     
 
3.2 OSD lock Menu function 
 
                          OSD Lock Menu Function Check 
Item Method Phenomenon 
Activate OSD lock  [1] + [ ▲]...

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Deactivate  
Resolution Notice Menu  Push button [2] under Resolution 
Notice OSD, select Disable 
------- 
 
3.5 Factory Mode Introduction 
When input the signal, press “power key” to turn off the monitor. Press”  [▼ ] +[ ▲] +[] “at the same time so 
as to enter factory mode. Afte r power on, press ‘’Menu[1]’’ key, you can see the Factory menu. 
 
INL-V7  : Currently using panel model name 
V3 060620  : Currently using...

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EDID (Rewrite EDID  data to EEPROM) 
If we need to rewrite the EEPROM data, please confirm the following steps. 
1. Plug in VGA Cable; we can rewrite the EDID  data to EEPROM by using “EDID Rewrite” program. 
2. If the “EDID Rewrite” process finished, please pull out VGA cable and press ‘’2’’+’’ ▲’’ at the same time. 
3. Pull out AC power cable or press power key to restart. 
 
Upload firmware to MCU via VGA Cable 
1. Connect...