Mechanical Instructions - Philips Colour Television Service Manual

EN 6 4. DPTV585 AA

4. Mechanical Instructions

Index of this chapter:
4.1 Disassembly Procedures
4.2 Service Position
4.3 Picture Tube Replacement
4.4 Set Re-assembly
Notes:
• Figures below can deviate slightly from the actual situation,
due to the different set executions.
• Follow the disassembly instructions in described order.
4.1.1 Lower Center Back Cover Removal (86)
1. Remove all screws (B and C).
2. Remove the Lower Center Back Cover.
4.1.2 Side Back Cover Removal
Remove all screws (F) from each of the Side Back Covers
(some prying may be necessary to dislodge covers).
Note: This allows access to the Side Jack Panel and to the Left
and the Right Speakers.
4.1.3 Large Signal Board Removal (LSB)
Note: See for the location of the panels figure "PWB location"
in Chapter 1 "Technical Specifications, Connection Facilities,
and Chassis Overview".
1. Disconnect all cables.
2. Remove three screws from the center of the PWB and pull
three tabs on the right of the bracket.
3. Lift the right side of the LSB and slide the panel up and out.
Mechanical Instructions
4.1
Figure 4-1 Exploded view 51" cabinet
4.1.4
4.1.5
Disassembly Procedures
All numbers, found in the following text, refer to the drawing
below and apply to both the 43" and 55" models.
Note:
• Not all shown items are available for all models.
• If you are servicing a PWB or speaker, you do not need to
remove the plastic Upper Back Cover (4).
AC Input Panel Removal
1. Disconnect all cables.
2. Remove four screws from the PWB.
3. Lift the AC Input Panel up and out.
Small Signal Module Removal (SSM)
1. Remove three screws along the rear of the chassis frame.
2. Remove two screws, which hold the chassis frame and are
located between the LSB and SSB panels.
3. Remove one screw, which holds the chassis frame and is
located between the Input Power and LSB panels
4. Remove the rear Jack Panel cover (76).
5. Slide the Chassis assembly rearward to allow access to the
Module Bracket.
6. Remove the screws, which secure the Module Bracket,
and release the cables.
7. Remove two screws from the centre of the SSM PWB.
8. Pull three tabs on the right of the panel bracket.
9. Lift the right side of the SSM, then move the SSM to the
right to remove it.
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