Colour Television |
Chassis |
A10PTV 2.0 Pal
AA 01.01
Convergence Alignment
The set should be warmed up for at least 20 minutes prior to making any Geometry or Convergence adjustments.
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 for PAL or SECAM and once for NTSC. 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 the screen while doing Convergence. Ensure that you are eye level 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 pattern when going from 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 before Convergence is adjusted. The Geometry alignment should not be necessary if the SSB or LSB have not been changed.
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
55INCHST4170
©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.
Touch-up Convergence adjustments
Ensure that a signal is connected to the set for the Mode being adjusted. Enter the Digital Convergence Mode (DCM) by entering 0- 6-2-5-9-7-(Status or Index) on the Remote control. The following menu will appear:
CL 16532049_001.eps
110501
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 Menu button can be used to 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.
Published by TA 0165 Service PaCE |
Printed in the Netherlands |
Subject to modification |
3122 785 40380 |
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