Service Manual

PAGE 56 MAINTENANCE
3. Carefully separate the cables (power, fans, loudspeaker, control card) taking care
not to damage or unduly tension them.
5.2.6 To Remove the MMI Board
1. Remove the front assembly as described in Section 5.2.5.
2. Remove the six securing screws from the chassis brackets.
3. Detach all of the cables (power, fans, loudspeaker, control card).
4. The MMI Board may now be removed.
5. To Remove the Loudspeaker, remove the front assembly and MMI board as
described above. Remove the four M3 nuts securing the Loudspeaker to the fan
bulkhead.
5.2.7 To Remove a Fan
1. Remove the Front assembly as described in Section 5.2.5 and the MMI board as
described in Section 5.2.6.
2. Remove the two fixing screws securing the appropriate Fan to the fan bulkhead.
3. Remove the Fan from the fan bulkhead.
5.3 RE-ASSEMBLY
In general, the re-assembly procedure is the reverse of disassembly procedure. If there
are any differences or there are any special areas of concern, they are described in this
section.
5.3.1 To Fit an MMI Board
1. Fit the new MMI Board to the three support brackets using six M3 mm Pan-Head
Screws.
2. Offer the front panel into position ensuring the top edge of the front panel clears the
control knob. Ensure that the LCD Display and the control knob are correctly
centred.
3. Reverse the procedure described in Section 5.2.6.
5.3.2 To Fit the Front Ass embly
1. Reverse the procedure described in Section 5.2.6 taking note of the following:
Notes: 1. Care must be taken to prevent damage to the cables and connectors when re-
locating them through the access slot in the fan bulkhead and reconnecting
them to the MMI board.
2. Care must be taken to prevent trapping the cables when fitting the front cover
back together with the fan bulkhead.
5.3.3 To Fit the Control B oard
1. Reverse the procedure described in Section 4.2.5.