4 Alignments and Adjustments
This section of the service manual explains how to use the RS232 JIG.
This function is needed when AD Board Change and program memory (IC110) change.
4-1 Required Equipment
The following equipment is necessary for adjusting the monitor:
•Computer with Windows 95 R , Windows 98 R , or Windows NT R .
•RS232 JIG.
4-2 RS232 Jig Setup
1.Install Hyper Terminal program from windows system.
2.Configure Baud rate to 19200, select appropriate COM port.
3.Make the Hardware setup as per figure shown.
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| Power | AD |
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| RS232 |
| Adapter | Board |
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| JIG |
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| Power |
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| Function | |
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| Serial cable |
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Figure
4.Establish the connection by selecting “Connect” from hyper Terminal.
5.Power on the board, now you see messages in the application window.
If no messages than check for 1, 2 and 3 again.
Message :
Gogh 17*** fw. copyright (c) 2000, 2001 Sage.
Date : ****. **. **.
Chip ID : b1.
Panel : Samsung 17 SXGA.
4-3 Changing Board
Before replacing the AD Board, read all Panel information data by using RS232 JIG and hyper terminal.
1.Type character `B`.
Service Menu for Gogh 17 Model.
1.Read.
2.Modify upper Back Light Value.
3.Modify Lower back Light Value.
4.Modify Panel On Time Value.
5.Exit Service Menu
Enter 1
Upper Backlight Time Expired (in hours) : ***
Lower Backlight Time Expired (in hours) : ***
Panel On Time (in hours) : ***
Please note down these values. Than change to new board. Execute the command `B`, read the values. You will see these are set to default values. Change the values to the recorded values. Exit the service menu by `B` command.
2. Color Auto Adjustment
After function `1`. Assemble the monitor.
And display
During normal execution of Auto Algorithm the screen image may changed.
4-4 Program memory (IC110) change
Follow same method as changing Board
GH17LS/GH17ES |
