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A10PTV 2.0
Service Manual
2 pgs118.03 Kb0

Philips A10PTV 2.0 Service Manual

A10PTV 2.0 Pal
AA 01.01
Touch-up Convergence adjustments
Ensure that a signal is connected to the set for the Mode being
Convergence Alignment
The set should be warmed up for at least 20 minutes prior to making any Geometry or Convergence adjustments.
adjusted. Enter the Digital Convergence Mode (DCM) by entering 0­6-2-5-9-7-(Status or Index) on the Remote control. The following menu will appear:
A signal must be applied to the set, for the Mode being adjusted, while performing Convergence or Geometry alignments. This is necessary to provide the correct Line and Frame sync to the Convergence panel. Failure to do so will result in an out of convergence picture when signal is applied to the set. The set must be convergenced twice, once forPAL or SECAM and once forNTSC. Since the Line and Frame rate is the same for PAL and SECAM, it is not necessary to adjust for both.
The Serviced Technician should sit at least 5 to 10 feet from the front of thescreen while doing Convergence. Ensurethat you are eyelevel with the area of the screen you are adjusting.
When performing Digital Convergence, the adjustments are interactive. A change in one quadrant will affect adjacent areas of the screen. Several passes through the Convergence sequence may be necessary. When doing Convergence, it is advised to follow the sequence patternwhen goingfrom on adjustment location to another. Pressing the Right Cursor key will sequence the Icon through a preloaded sequence.
When the Convergence error is small, a touch up Convergence will be all that is necessary. Do not adjust Green Geometry while in this mode. A compete in-depth Convergence is required when the Small Signal Module (SSM) or the Convergence Memory IC, has been replaced. If the SSB (Small Signal Board) or the Large Signal Board (LSB) has been replaced, a complete in-depth Geometry should be completed beforeConvergence isadjusted. The Geometry alignment should not be necessary if the SSB or LSB have not been changed.
CL 16532049_001.eps
Figure 1
Select an active channel or Aux Input. A signal must be applied to the set when performing convergence. If any Customer Adjustments need to be made, the Menubutton can be usedto toggle between the Customer Menu and DCM. The MPOSD ADJUST is used to center the Customer Convergence grid. A highlighted cross will appear along with the Convergence alignment grid. The highlighted cross should be centered onto the center of the Convergence grid.
110501
When performing a complete in-depth Convergence alignment, a Screen Template is necessary to obtain the correct Geometry. The correct Templates are listed below: 43 INCHST4168 50 INCHST4169 55 INCHST4170
©
Copyright 2001 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by TA 0165 Service PaCE Printed in the Netherlands Subject to modification
3122 785 40380
GB 2 A10PTV2.0 01.01
To perform a Touch Up Convergence, highlight SELECTION and press the right cursor button on the remote. The following menu will appear:
CL 16532049_002.eps
Figure 2
110501
12. Remove the Jumper on connector 1005.
Note: If a CRT has been replaced, it is only necessary to perform Screen Centering for the CRT being replaced.
GREEN GEOMETRY
1. Make sure a signal is applied to the set.
2. Enter the Convergence mode by entering 0-6-2-5-9-7-(Status or Index). Use the Menu button to toggle between DCM and Customer Mode. Select an active channel or input while in the Customer Mode.
3. Place a Template over the Screen.
4. Select GREEN in the SELECTION menu.
5. The Icon will appear in the center of the screen. Press the Right Cursor keyon the remote tomove the Icon to thenext adjustment location. At each location press the Status or Index button to enter the ADJUST mode. Using the Cursor keys, adjust the Icon onto the adjustment point on the template. It is recommended that the two outside vertical lines not be adjusted in the first two passes.
6. Continue to follow the pattern and make corrections until the Convergence Crosshatch pattern matches the Template.
7. Press the Menu button to return to the SELECTION menu.
8. Use the Cursor down key to highlight the STORE selection.
9. Press the Right cursor key to save the alignments.
10. Remove the Template.
Selections STORE, RESTORE FACTORY, and RESTORE DEFAULT are not shown after selecting SELECTION. Press the cursor down button on the Remote for these selections to appear. RESTORE FACTORY loads Convergence defaults from the Factory Loaded section of the Convergence Memory IC. RESTORE DEFAULT loads Convergence defaults from the sets software.
To perform a Touch-up Convergence:
1. Enter the Convergence Mode and select RED TO GREEN or BLUE TO GREEN. Do not select GREEN (Green Geometry) without placing a Template over the screen. To perform Green Geometry, refer to the Complete in-depth Convergence.
2. Use the Cursor buttons on the Remote to Navigate from one adjustment point to another. Press the Status or Index button on the Remote to select ADJUST. Use the cursor buttons on the Remote to adjust the Red to Green or Blue to Green. Press the Status or Index button again to navigate to the next adjustment location.
3. After Convergence alignments are complete, press the Menu button on the Remote to return to the SELECTION menu.
4. Highlight the STORE selection and press the right cursor key on the Remote to save changes.
5. Use the GREEN TO RED or GREEN TO BLUE selections to perform convergence when the Green CRT has been replaced.
Complete in-depth Convergence
SCREEN CENTERING
1. Make sure a signal is applied to the set for the mode being adjusted.
2. Enter the Convergence mode by entering 0-6-2-5-9-7-(Status or Index). Selectan active channel orinput. If the Customer settings need to be adjusted, pressing the Menu button will access the Customer menu.
3. Place a Template over the screen.
4. Select GREEN in the SELECTION menu.
5. Place a jumper across connector 1005 on the SSM to defeat convergence drive.
6. Using the centering rings on the Green CRT, center the convergence pattern onto the center point of the Convergence Template.
7. Press the Menu button on the Remote to return to the SELECTION menu.
8. Select RED TO GREEN in the menu.
9. Center the Red pattern onto the Green pattern.
10. Select BLUE TO GREEN in the SELECTION menu.
11. Center the Blue pattern onto the Green pattern.
RED CONVERGENCE
1. Select RED TO GREEN in the SELECTION menu.
2. Adjust the Red crosshatch pattern onto the green pattern in the same manner that Green was adjusted to the Template.
3. Save the alignments.
BLUE CONVERGENCE
1. Select BLUE TO GREEN in the SELECTION menu.
2. Adjust the Blue crosshatch pattern onto the green pattern in the same manner that Green was adjusted to the Template.
3. Save the alignments.
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