C4000 Processor Board Replacement - Compac CNG Installation And Service Manual

C4000 Processor Board Replacement

C4000 Processor Board Replacement
Remove the C4000 Processor board
Install New C4000 Processor
Compac Industries Ltd.
Before you start
Obtain the following replacement parts
 Replacement C4000 Processor part number F-CP-C4PROCES-A
1. De-gas the loading post (see page 23).
2. Remove the cover of the C4000 enclosure.
3. If possible, record all the set-up data by accessing the Parameter
switch (SW1) and the K-Factor switch (SW2). The Software Set-Up
and Upgrade section (see page 17) contains details on obtaining this
information.
4. Switch off the power supply to the loading post.
5. Remove both the EPROM and memory chips Loading post Software
Upgrade/Replacement (see page 37)
Take basic anti-static precautions by wearing a
wristband with an earth strap.
6. Unplug all wiring from the C4000 microprocessor board and remove
the board from its position.
Take basic anti-static precautions by wearing a
wristband with an earth strap.
1. Put the new board in place of the old one, and plug all the wiring back
in the same order as before.
2. Refit the EPROM and memory chips, as per Loading Post Software
Upgrade/Replacement (see page 37)
3. Check loading post operation (see page 25).
It should not be necessary to recalibrate the loading post.
Page 36
Servicing
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