Acer V193w Service Guide

							 
11   
Function Block Diagram 
 
  
Electrical Characteristics 
    
						

							 
 
12 
Optical Specifications 
   
						

							 
13   
Support Timing 
 
    Horizontal  Vertical   
Mode  Resolution  Total Nominal 
Frequency  +/- 0.5kHz  Sync 
Polarity  Nominal 
Freq. 
+/- 1 Hz  Sync 
Polarity  Nominal 
Pixel 
Clock 
(MHz) 
640x480@60Hz  800 x 525  31.469  N  59.940  N  25.175 
640x480@72Hz  832 x 520  37.861  N  72.809  N  31.500 VGA 
640x480@75Hz  840 x 500  37.500  N  75.00  N  31.500 
800x600@56Hz  1024 x 625  35.156  N/P  56.250  N/P  36.00 0 
800x600@60Hz  1056 x 628  37.879  P  60.317  P  40.000 
800x600@72Hz  1040 x 666  48.077  P  72.188  P  50.000 SVGA 
800x600@75Hz  1056x625  46.875  P  75.000  P  49.500 
1024x768@60Hz  1344x806  48.363  N  60.004  N  65.000 
1024x768@70Hz  1328x806  56.476  N  70.069  N  75.000 XGA 1024x768@75Hz  1312x800  60.023  P  75.029  P  78.750 
1152x864@75Hz  1600X900  67.5khz  P  75  P  108.000 
1280x960@60HZ  1800x1000  60    60    108 
1280x720@60HZ  1650x750  44.955    59.94    74.176 
1280x768@60HZ  1664x798  47.776    59.87    79.5 
VESA 
1280x768@75HZ  1696x805  60.289    74.893    102.25 
1280x1024@60Hz  1688x1066  63.981  P  60.020  P  108.000 SXGA 1280x1024@75Hz  1688x1066  79.976  P  75.025  P  135.000 
1360x768@60HZ  1792x795  47.712    60.015    85.5 
1440x900@60Hz  1904x934  55.93  P  60  P  106.5 WXGA 
1440x900@75Hz  1936x942  70.635  P  75  N  136.75 
  
						

							 
 
14 
Monitor Block Diagram 
The LCD MONITOR will contain a main board, a power  board, and key board which house the flat panel control logic, 
brightness control logic and DDC.  
The  power  board  will  provide  AC  to  DC  Inverter  volt age  to  drive  the  backlight  of  panel  and  the  main  board  chips 
each voltage.   
 
 
   
 
                                 
         
   
      
Inverter Board 
(include adapter) 
Flat  Panel  and  
CCFL backlight 
 
Main Board 
 
Key board Input : 
D-SUB Signal 
CCFL Drive. 
AC-IN 
90V-264V  
						

							 
15   
Main Board Diagram      
                
 
    
      
   
             
Scalar IC TSUM1PFR-LF 
(Include MCU ,ADC, OSD)  (U401) 
D-Sub 
Connector    (CN101) 
 
H sync 
V sync 
RGB 
LCD Interface    (CN403) 
 
Key Board Control 
(CN401) 
Crystal  (X401) 
14.31818MHZ  
						

							 
 
16 
Software Flow Chart         
   
         N 
               Y 
                       1 
2 
N 
Y 
5 
Y  N 
10 
Y  N 
12 
Y 
N
 
7 
Y 
N
 
6 
4 
3 
8 
9 
14 
11 
13 
Y 
N 
15 
Y  N 
16 
17 
19 
Y 
N
 18  
						

							 
17   
 
Remark:
1) MCU initializes. 
2) Is the EEPROM blank? 
3) Program the EEPROM by default values. 
4) Get the PWM value of brightness from EEPROM.   
5) Is the power key pressed? 
6) Clear all global flags. 
7) Are the AUTO and SELECT keys pressed? 
8) Enter factory mode. 
9) Save the power key status into EEPROM. Turn on the LED and set it to green color.  
Scalar initializes. 
10) In standby mode? 
11) Update the lifetime of back light. 
12) Check the analog port, are there any signals co ming? 
13) Does the scalar send out an interrupt request? 
14) Wake up the scalar. 
15) Are there any signals coming from analog port?   
16)  Display  No  connection  Check  Signal  Cable  mess age.  And  go  into  standby  mode  after  the 
message disappears. 
17) Program the scalar to be able to show the coming mode. 
18) Process the OSD display. 
19) Read the keyboard. Is the power key pressed?  
						

							 
 
18 
Main Board Layout 
 
Symbol  Description  Symbol  Description 
U401  IC TSUM1PFR-LF  CN401  WAFER 6PIN 
U404  IC AP1117D33LA TO252-3L ATC  CN404  WAFER 9P RIG HT ANELE PITCH 
U103  IC AZC099-04S SOT23-6L  CN403  CONNECTOR 
U102  IC AZC099-04S SOT23-6L  X401  14.31818MHZ/32PF/4 9US 
U402  SST25LF020A-33-4C-SAE  CN101  D-SUB 15PIN 
        
						

							 
19   
Installation 
To install the monitor on your host system, please follow the steps below: 
Steps  
1 Connect the video cable A ： Make sure both the monitor and computer are switche d off. 
B ： Connect the VGA video cable to the computer. 
2 Connect the power cord 
Connect the power cord to the monitor, then to a pr operly grounded AC outlet. 
3 Turn on the monitor and computer 
Turn on the monitor first, then the computer. This  sequence is very important. 
4 If the monitor does not function properly, please  refer to the troubleshooting section to diagnose the problem. 
 
         
						

							 
 
20 
Attaching/Removing the Base 
Attaching:  
Align the release button on the bottom of the monit or with the corresponding slots on the bottom of the base. 
Removing: 
Press the release button as indicated, then pull in  the direction of the arrow to remove the base.