Philips 40PFL7664H/12 Service Manual page 11

4.2 Service Positions
For easy servicing of this set, there are a few possibilities
created:
• The buffers from the packaging.
• Foam bars (created for Service).
4.2.1 Foam Bars
Required for sets
1
42"
Figure 4-2 Foam bars
The foam bars (order code 3122 785 90580 for two pieces) can
be used for all types and sizes of Flat TVs.
See figure Figure 4-2 for details. Sets with a display of 42" and
larger, require four foam bars [1]. Ensure that the foam bars
are always supporting the cabinet and never only the display.
Caution: Failure to follow these guidelines can seriously
damage the display!
By laying the TV face down on the (ESD protective) foam bars,
a stable situation is created to perform measurements and
alignments. By placing a mirror under the TV, you can monitor
the screen.
Mechanical Instructions
1
10000_018_090121.eps
090121
Q548.1E LB
4.3 Assy/Panel Removal
4.3.1 Rear Cover
Warning: Disconnect the mains power cord before you remove
the rear cover.
Note: it is not necessary to remove the stand while removing
the rear cover.
1. Remove all screws of the rear cover.
2. Lift the rear cover from the TV. Make sure that wires and
flat coils are not damaged while lifting the rear cover from
the set.
4.3.2 Ambilight
1. After removal of the rear cover, the Ambilight modules are
accessible.
2. Unplug the connector(s).
3. Remove the screws that fixate the unit.
4. Take the unit out.
When defective, replace the whole unit.
4.3.3 Speakers
Each speaker unit is mounted with three screws. A sticker on
the unit indicates if it is the right ("R") or left ("L") box (seen from
the front side of the TV).
1. Unplug the connectors.
2. Remove the screws that fixate the unit.
3. Take the unit out.
When defective, replace the whole unit.
4.3.4 LED/IR
1. Unplug the connectors.
2. Remove the two fixation screws.
3. Take the unit out.
When defective, replace the whole unit.
4.3.5 Keyboard Control
1. Release the cable.
2. Unplug the connector.
3. Release the clip on top of the unit and take the unit out.
When defective, replace the whole unit.
4.3.6 Temperature Sensor
1. Unplug the connector.
2. Remove the screw.
3. Take the unit out.
When defective, replace the whole unit.
4.3.7 Power Supply
1. Unplug all connectors.
2. Remove the fixation screws.
3. Take the unit out.
When defective, replace the whole unit.
4.3.8 Small Signal Board (SSB)
Caution: It is mandatory to remount screws at their original
position during re-assembly. Failure to do so may result in
damaging the SSB.
1. Unplug all connectors. Be careful with the fragile LVDS
connector(s)!
2. Remove all screws that secure the board.
3. Take the board out.
4. EN 11
2009-Dec-18