Philips SPENDEX 40 Maintenance Manual page 57

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NATO CONFIDENTIAL
S P E N D E X 4 0 U A 8 2 5 1 / 0 0 A N D / O l L I M I T E D M A I N T E N A N C E M A N U A L
- Loosen the 6 captive M4 socket head screws, with which the line
interface board/modem assembly is fixed in the housing. Use for
this purpose a round head screwdriver, size 3;
- Take the line interface board/modem assembly carefully out of the
housing. See to it that the flat cable connectors X50 and X52 are
not damaged;
- Screw the 6 captive M4 socket head screws out of the distant pieces
of the assembly;
- Loosen the 6 M3 screws, with which the line interface board is
fi x e d ;
- Remove the 6 M3 screws, including the plain washers and the
retaining Belleville washers;
- Pull the line interface board carefully out of the connector X48 of
the modem.
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7.3.5 Demounting of the modem
The modem and the line interface board make up an assembly. The whole
is mounted in the line interface compartment of the housing.
- Demount the mains/line filter as described in § 7.3.3;
- Release the flat cable connectors X50 and X52 and the blue
connector X63 carefully (see Fig. 7.2);
- Loosen the 6 captive M4 socket head screws, with which the line
interface board/modem assembly is fixed in the housing. Use for
this purpose a round head screwdriver, size 3;
- Take the line interface board/modem assembly carefully out of the
housing. See to it that the flat cable connectors X50 and X52 are
not damaged;
- Loosen the 6 M3 screws, with which the modem is fixed;
- Remove the 6 M3 screws, including the plain washers and the
retaining Belleville washers;
- Take away the modem.
7 . 3 . 6 D e m o u n t i n g o f t h e c r a d l e
- Loosen the 3 M5 socket head screws, with which the cradle is fixed
on the housing. Use for this purpose a round head screwdriver,
size 4;
- Remove the socket head screws, including the plain washers and the
retaining Belleville washers;
- Take the cradle from the housing.
7 . 3 . 7 D e m o u n t i n g o f t h e u p p e r c o v e r
- Demount the cradle as described in § 7.3.6;
- Remove the 2 USFA-sealing strips;
- Loosen the 14 captive M4 socket head screws, with which the upper
cover is fixed on the housing. Use for this purpose a round head
screwdriver, size 3;
- Take the upper cover from the housing without damaging the packing.
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NATO CONFIDENTIAL
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