Philips Q552.2L Service Manual page 18

EN 18 4. Q552.2L LA
4.3.5 Stand bracket removal
Refer to Figure 4-10 for details.
Caution: it is mandatory to remount all different screws at their
original position during re-assembly. Be sure to put the set in
the Service Position.
1. Remove the fixation screws [1], [2].
2. Take the Stand bracket out.
3. Take Cover leading edge out, be careful of the clips.
Stand bracket
2
1
Cover leading edge
2
Figure 4-10 Stand bracket removal
4.3.6 Power switch and mains plug
Refer to Figure 4-11 for details.
1. Unplug the connector from the PSU.
2. The switch and mains inlet can be remove by simply lifting
them upwards out of their brackets.
3. The brackets can be removed by removing the fixation
screws [1] and take them out of the set.
When defective, replace the power switch and mains plug
assembly.
AC inlet cover
AC hand switch
Figure 4-11 Power switch and mains plug removal
4.3.7 Speakers
1. Unplug the left and right speaker connectors from the SSB.
2. Remove the Stand bracket as described earlier.
3. Remove the Power switch and mains plug as described
earlier.
4. Release tapes from the speaker cables.
5. Take the left and right speakers out.
When defective, replace the both units.
2012-Mar-16
Mechanical Instructions
4.3.8
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IR/LED/Keyboard
Refer to Figure 4-12 for details.
1. Remove the stand bracket as described earlier.
2. Release the connectors [1] from the IR/LED/Keyboard.
3. Caution: The board is fitted to the bezel by double sided
tape!
4. Use the slot type screw driver to detach the IR/LED/
Keyboard from the bezel. Be careful not to damage the
bezel. Refer to Figure 4-12
5. Carefully remove any of the tape residue from the bezel.
When defective, replace the whole unit.
1
Figure 4-12 IR/LED/Keyboard removal
Caution: The touch control function needs to be checked when
it is replaced.
1. Use test finger with a 8 mm diameter to touch centre of key
icon on front cover.
2. Press touch key sensitivity test hot key "0 6 2 5 9 0 MENU",
check the sensitivity count value of each key (CH +/-,
HOME, VOL +/-), when touching key icon on front cover.
Refer to Figure 4-13 for details.
3. The value count of each key should be over 100.
Figure 4-13 Check touch control
for details.
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