Message Center Display (MCD) Replacement – 2000-2011 Prevost

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Redact: ML <QF7720960 rev5>
Instruction sheet IS-17910 A
MESSAGE CENTER DISPLAY (MCD) REPLACEMENT
REVISION: A This revision replaces all previous versions
2019-06-05 Procedure made clearer.
Effectivity: all vehicles with digital cluster.
MATERIEL
Kit #IS17910 includes the following parts:
Part No. Description Qty
19519274 MESSAGE CENTER DISPLAY (CURCUIT BOARD) 1
IS-17910 INSTRUCTION SHEET 1
FI-17910 FEUILLE D’INSTRUCTIONS 1
NOTE
Material can be obtained through regular channels.
PROCEDURE
DANGER
Park vehicle safely, apply parking brake, stop the engine. Prior to working on the vehicle, set the
ignition switch to the OFF position and trip the main circuit breakers equipped with a trip button. On
Commuter type vehicles, set the battery master switch (master cut-out) to the OFF position.
General Work Practices
Note: Individual gages or modules in the H3/XL2 instrument cluster are not serviceable during the
warranty period. Attempts to service or replace individual modules or gages during the warranty
period will void the cluster warranty.
Caution: To prevent electrostatic discharge (ESD), which may damage the sensitive electronic
components in the instrument cluster, make sure the workbench has an anti-static mat which is grounded
to the nearest electrical outlet when working on the instrument cluster. Failure to use an anti-static mat
may result in permanent damage to the printed circuit boards in the instrument cluster. When working at
the anti-static workbench, always keep a wrist strap connected to the anti-static mat.
When dealing with circuits designed to sense differences smaller than 1 volt, electrostatic discharge can
be a subtle but destructive problem. Circuit boards mounted in the instrument cluster or in modules
mounted elsewhere may not fall immediately after being hit with a static discharge. Rather they may work
for a while, then fall for no apparent reason. The culprit then is often the normal warming up and cooling
down the process of the module, engine or cab interior.
IS-17910 A
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Grounding straps and anti-static mats are available for minimal cost from electronic supply stores.
Grounding straps consists of a wrist strap, a coiled extension wire and an alligator clip. Be sure to
purchase one with a long enough extension wire to allow freedom of movement.
FIGURE 1: SPECIAL EQUIPMENT
NEW DISPLAY PREPARATION
1. Remove the new PC board with the new
display from the delivery box.
FIGURE 2
2. Place the new PC board on the static
mat.
NOTE
A static bracelet must be worn for all
operations.
FIGURE 3
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3. Remove the new display from the new
PC board (2 screws Torx T7).
FIGURE 4
4. Keep the new display and screws.
5. Discard the new PC board.
FIGURE 5
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INSTRUMENT CLUSTER REMOVAL
CAUTION
When servicing or troubleshooting, do
not leave the cluster face-down for more
than 15 minutes, or damage to the gages
may occur. Gage oil can run out the front
of the gage faces and make the gages
inaccurate.
6. Remove the air from the air tank by
applying the brakes repeatedly.
7. Remove the dashboard cover.
8. Disconnect the instrument cluster cabling.
9. Disconnect the 3 air hoses.
10. Remove the nuts fixing the instrument
cluster to the dashboard housing (Figure
6).
11. Remove the instrument cluster.
FIGURE 6
12. Place the instrument cluster on a static
mat for repairs.
NOTE
A static bracelet must be worn for all bench
repairs.
FIGURE 7
instrument cluster nuts /
écrous du panneau des instruments
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EXISTING DISPLAY REMOVAL
13. On the cluster, remove the cover over
the existing PC board (3 screws).
FIGURE 8
14. Remove screws (2) that hold the existing
PC board to the cluster.
FIGURE 9
15. Turn the existing PC board over.
16. Disconnect the ribbon cable then remove
the existing PC board.
FIGURE 10
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17. Remove the existing display from the
existing PC board (2 screws Torx T7).
FIGURE 11
REINSTALLATION
18. Install the new display on the existing PC
board (2 screws).
19. Connect the ribbon cable of the existing
PC board with the new display on the
cluster.
20. Turn the existing PC board in place.
FIGURE 12
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21. Install screws (2) to hold the existing PC
board on the cluster.
FIGURE 13
22. On the cluster, reinstall the cover over
the existing PC board (3 screws).
23. Reinstall the instrument cluster into the
dashboard housing.
24. Insert the lower part of the instrument
cluster into the housing. Exert a pressure
on the lower part of the instrument
cluster to avoid jamming the instrument
cluster glass pane. Rest the leaf spring
against the supports.
FIGURE 14
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NOTE
The instrument panel supports may be lowered from 1 mm to 2 mm maximum if, after tightening,
the pane does not clear the housing (Figure 15).
25. Bring back the top of the instrument cluster, insert the screws and tighten the nuts until the
instrument cluster rests against the housing (Figure 15).
26. Reconnect the 3 air hoses.
Instrument panel lens /
Lentille du panneau
des instruments
Suffic ient tightening /
Serrage suffisant
FIGURE 15
27. Reconnect the instrument cluster cabling.
28. Reinstall the dashboard cover.
29. Bulletin is complete.
PARTS / WASTE DISPOSAL
Discard waste according to applicable environmental regulations (Municipal/State[Prov.]/ Federal)