Philips 4500 Series Service Manual page 12

EN 12 4. TPS15.2A LA
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4.3.3 Keyboard Control unit
1. Gently release the tapes that secure the keyboard cable.
2. Remove the fixation screws that secure the keyboard
control panel.
3. Gently take the keyboard out.
When defective, replace the whole unit.
4.3.4 Small Signal Board (SSB)
Refer to Figure 4-6 for details.
Caution: it is mandatory to remount all different screws at their
original position during re-assembly. Failure to do so may result
in damaging the SSB.
1. Release the clips from the LVDS connector that connect
with the SSB [1].
Caution: be careful, as these are very fragile connectors!
Unplug the cable/flat foils connector.
2. Unplug all other connectors [2].
3. Remove all the fixation screws from the SSB [3].
4. Take out the SSB with I/O bracket.
5. The SSB can now be shifted away from side connector
cover, then lifted and taken out of the I/O bracket. Refer to
Figure 4-6 for details.
2015-May-01
Mechanical Instructions
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Figure 4-5 Rear cover removal
back to
div.table
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Figure 4-6 SSB removal
4.3.5 Power Supply Unit (PSU)
Caution: it is mandatory to remount all different screws at their
original position during re-assembly. Failure to do so may result
in damaging the PSU.
1. Unplug all connectors from the PSU.
2. Remove all fixation screws from the PSU.
3. The PSU can be taken out of the set now.
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M3 × 6
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