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4 Alignments and Adjustments
This section of the service manual explains how to use the DDC JIG to adjust the black, red, green, and blue levels of the FPD when you replace the AD Board, and how to update the microprocessor when you change the Panel or Lamp(s).
4-1 Required Equipment
The following equipment is necessary for adjusting the monitor: · Oscilloscope with probe tool · Computer with Windows 95 R , Windows 98 R , or Windows NT R . · DDC Control JIG
4-2 Using the DDC Control JIG
After replacing the LCD Panel, Lamp(s), and / or AD Board, use the DDC Control JIG to complete your service. Attach the DDC Control JIG to the flat panel display (FPD) as shown in the diagrams, below.
4-2-1 Adjustment Procedures
MONITOR INTERFACE BOARD VER. 2.0 5V DC ADAPTOR PARALLEL CABLE PC SIGNAL GENERATOR SIGNAL CABLE
Use the following procedures whenever you replace the AD Board, Panel, or one or both of the Lamps. 4-2-1 (a) When Replacing the AD Board 1. Remove the old AD Board and replace it with a new board. 2. Perform the procedures described in section 4-2-3 (b). 3. Perform other procedures using the DDC Control JIG, if necessary. 4-2-1 (b) Color Auto Adjustment 1. After displaying 16-Gray pattern press "+", "", and "source" buttons. 2. During normal execution of Auto Algorithm the screen image may change. If Auto Algorithm does not excute properly, try one more. 3. After normal execution of Auto Algorithm, confirm optimal settings by observing the contrast of several different patterns on the display. 4-2-3 (c) White Balance Adjustment 1. After displaying white pattern (on the WUXAG mode), press "+","", and "PIP" buttons. 2. During normal execution df white balance the screen, image may change.
3-WIRE CABLE
Figure 4-1. Setup 1, With Signal Generator
MONITOR INTERFACE BOARD VER. 2.0 5V DC ADAPTOR SIGNAL CABLE PARALLEL CABLE PC D-SUB CONNECTOR 3-WIRE CABLE
Figure 4-2. Setup 2, Without Signal Generator
SyncMaster 210T/240T
4-1
4 Alignments and Adjustments
Memo
4-2
SyncMaster 210T/240T