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Section 5: Parts and Module Replacement
5.9.2 Backplane
(Estimated Replacement Time: 85 minutes)
The Backplane PCB is located at the back of the cardcage.
1. Remove the front top lid. See
2. Remove PIB3G/ICP Cover. See
9
3. Remove the high security lid. See
5-6.
4. Remove the security ring from the front of the cardcage
(Figure 5-24).
5. Remove the blank faceplate, PIB3G and ICP PCBs from backplane.
6. Remove the two screws from the top of the tool holder
(Figure 5-25).
7. Disconnect the LEQD2 board from the backplane (Figure 5-29).
8. Disconnect all harnesses (seven) from the backplane.
9. Disconnect the two top cardcage fans from the inline connectors.
NOTE: Two additional fans can be added to the top of the
cardcage. If these optional fans are used in your projector, remove
them also.
10. Loosen the single thumbscrew securing the front side of the
cardcage to the baseplate.
11. Pull up on the cardcage and remove.
12. Using a #1 Phillips
to the cardcage (Figure 5-26).
13. Slide backplane out of the cardcage.
14. To install, repeat the above steps in reverse.
5-20
5.4.2 Front Top Lid, on page
5.4.9 PIB3G/ICP Cover, on page 5-
5.4.3 High Security Lid, on page
, remove the screws securing the backplane
™
5-5.
Figure 5-25 Tool Holder
Figure 5-26 Cardcage with Backplane
D4K25 Service Manual
020-100880-01 Rev. 1 (06-2012)
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