Philips EM3E, Руководство по обслуживанию, Страница: 21 / 120

Mechanical Instructions GB 21 EM3E 4.
4.3.3 Small Signal Board (SSB)
In fact, there is no predefined service position for the SSB.
Most test points are located on the A-side (side that is facing
the tuner).
If you have to replace ICs, you must take the complete SSB
module out of the SIMM-connector.
To get access to the SSB test points, do the following:
1.
Put the LSP in service position 1 (as described above).
2. Remove the fixation screw, which holds the SSB-bracket
[1].
3. Release the clamping jaw at the top of the SSB bracket
[2] and [3].
4. Push the two clamping lugs outwards, and pull the top of
the bracket at the same time upwards [4] and [5].
5. Now you can remove the complete bracket. Push it, at
the height of the LSP-bracket, towards the CRT [6] and
lift it out of the LSP-bracket [7].
Figure 4-5
1. Push the top of the SSB towards the LOT [1].
2. Due to the pressure, the two metal clamps at both sides
of the SIMM-connector will release [2].
3. Take the complete SSB out [3].
Figure 4-6
1. Once you have taken out the SSB, remove the A-side
shielding [2]. Sometimes it is necessary to unsolder
some solder-tags first [1].
2. Now replace the SSB module in the SIMM-connector in
reverse order.
Figure 4-7
Note 1: For better access to the SSB, it is possible to order
an ‘extension board’ under number 9965 000 07933.
Note 2: If necessary for the measurement, put the LSP in
'service position 2' (as described above).
4.3.4 Top Control Panel
1. Remove the two fixation screws.
2. Pull the board backward.
Figure 4-8
4.3.5 Side I/O Panel
1. Remove the two fixation screws [1].
2. Push the panel door inside and fix it in the lock [2].
3. Pull the module backward [3].
4. Now release the fixation clamps, in order to remove the
print from its bracket.
Figure 4-9
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SSB
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SAM (4005)
SDM (4006)
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Top control board
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