Service Manual TOP NEXT ORDER NO. ITD0110012C3 Projection Television TX-43P250/TX-51P250/TC-43P250/TC-51P250 EURO-7VPChassis Specifications Power Source: TX-43/51P250, TC-51P250H: AC 220V-240V, 50/60Hz TX-43/51P250X: AC 110V-240V, 50/60Hz Power Consumption: TX-43/51P250, TC-51P250H: 228W TX-43/51P250X: 238W 3.0W (Stand-by condition) Aerial Impedance: 75Ω unbalanced, Coaxial type Tuning System:...
5 Self Check TOP PREVIOUS NEXT 1. Self-Check is used to automatically check the bus lines and hexadecimal code of the TV set. 2. To get into the Self -Check mode press the down ( ) button on the customer controls at the front of the set, at the same time pressing the HELP button on the remote control, and thescreen will show : If the CCU ports have been checked and found to be incorrect or not located then “--”...
7.1 Dynamic Focus Adjustment TOP PREVIOUS NEXT 1. Focus adjustments should be performed after 1 hour of aging. 2. Use oscilloscope with 100 : 1 probe. 3. Apply monoscope pattern. 4. Adjust the Red, Blue and Green focus VR on the focus block for best focus of overall picture of each CRT.
7.2 Electrical Focus Adjustment TOP PREVIOUS NEXT 1. Receive a monoscope pattern. 2. Cover the Red and Blue CRT, projecting Green only. The electrical focus controls are located on the front. Adjust the Green Focus VR for best focus of overall picture. (Fig. 2) 3.
7.3 Optical Lens Focus Adjustment TOP PREVIOUS NEXT Note: This adjustment normally should not require resetting unless the lens has been replaced or adjustment has changed. 1. Optical focus adjustment is located on the top of each CRT lens system. Loosen the adjustment knurls locking knob.
7.4 Centering Magnet Adjustment TOP PREVIOUS NEXT 1. Receive a monoscope pattern. 2. Confirm that Coarse convergence data (Service mode1) for R,G and B is 0. 3. Set that Fine convergence data (Service mode1) is clear (no correction). 4. Set that V-Pos data (Service mode1) is [100]. 5.
7.5 Alignment magnet Adjustment TOP PREVIOUS NEXT Preparation: 1. Receive an cross hatch pattern with dots (pincushion). 2. Loosen the centering magnets screws. 3. Position the longer tab of the four-pole magnet to 90 degrees (uncorrected position). VM Coil with focus correction magnet 4-pole magnet 4.
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6. Adjust for best green electrical focus with green electrical focus adjustment VR. 7. Cover the Green, Red CRT lens, projecting Blue only. 8. Repeat step 4. ~ step 6. for blue electrical focus. 9. Cover the Green, Blue CRT lens, projecting Red only. 10.