Philips Chassis EM1.1A AA, Service Manual

Page: 23 / 126

Mechanical Instructions EN 23 EM1.1A AA 4.
4.3.3
LSP Solder Side
Figure 4-4 Service position 3
To access the bottom side (solder side) of the LSP, do the
following (see figure above):
1.
Remove the DAF module (see paragraph “DAF Assembly/
Panel” below.)
2.
To disconnect the degaussing coil from the LSP, remove
the cable from connector 1502 [1.]
3.
Release the wires from their clamps to make room to
reposition the LSP.
4.
Turn the LSP 90 degrees clockwise [2], and place it in the
hole at the left side of the bottom tray [3.]
4.3.4
Small Signal Board (SSB)
There is no predefined service position for the SSB. Most test
points are located on the A-side (the side that faces the tuner.)
If you have to replace ICs, you must take the complete SSB
module out of the SIMM-connector.
To access the SSB test points, do the following:
Figure 4-5 SSB removal (part 1)
1.
Put the LSP in service position 2 (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 4-6 SSB removal (part 2)
1.
Push the top of the SSB toward 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 4-7 SSB removal (part 3)
1.
Once you have taken out the SSB, remove the A-side
shielding [2.] Sometimes it is necessary to unsolder some
solder tags before doing this [1.]
2.
Replace the SSB module in the SIMM-connector in reverse
order.
Notes:
•
For better access to the SSB, it is possible to order an
“extension board,” which is part number 9965 000 05769.
•
If it is necessary for measurements, you can put the LSP in
“service position 3” (as described above.)
4.4
Assembly / Board Removal
Sometimes, it may be necessary to swap a complete assembly
or Circuit Board Assembly (CBA.) This procedure is explained
below.
CL 26532072_014.eps
180602
3
4
1
1502
2
CL 26532072_015.eps
180602
3
7
6
7
6
4
4
2
1
5
3
2
1
SSB
2
3
CL 26532072_016.eps
140602
2
CL 16532044_008.eps
090501
2
1
1
SAM (4005)
SDM (4006)