Altronic CPU-2000 Instruction de service - Page 20

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Altronic CPU-2000 Instruction de service

12.0 BOARD REPLACEMENT PROCEDURE-LOGIC MODULE DISPLAY BOARD

12.1 DISASSEMBLY PROCEDURE (refer to figure 2)
A.
Unplug keypad cable.
B .
Remove four screws (7) from the shield board (13) on the display board (12) and remove
shield board.
C.
Remove ribbon cable.
D.
Remove four standoffs (8) and remove display board (12).
12.2
ASSEMBLY PROCEDURE (refer to figure 2)
A.
Replace display board (12) and secure with four standoffs (8).
B.
Connect ribbon cable to display board.
C.
Replace shield board with notch (13) over the ribbon cable. Tighten 4 screws (7).
D.
Plug keypad cable into display board.
E.
Retest Logic module per section 7.0 to verify correct operation.

13.0 BOARD REPLACEMENT PROCEDURE-LOGIC MODULE LOGIC BOARD

13.1
DISASSEMBLY PROCEDURE (refer to figure 2)
A.
Remove four screws (7) and remove shield board (10).
B.
Remove two screws (7) and five standoffs (8) and remove the logic board (9).
C .
Disconnect ribbon cable from the logic board.
ASSEMBLY PROCEDURE (refer to figure 2)
13.2
A.
Connect ribbon cable to logic board (9).
B .
Put logic board in Logic Module box and secure with top screws (7) and five standoffs (8).
C .
Replace shield board (10) and secure with four screws (7).
D.
Retest Logic Module per section 7.0 to verify correct operation.

14.0 BOARD REPLACEMENT PROCEDURE -DIAGNOSTIC MODULE

14.1
DISASSEMBLY PROCEDURE (refer to figure 5)
A.
Remove sixteen screws (9) from four connectors and push connectors into box.
B.
Remove four screws (13) from circuit board.
C.
The circuit board assembly can now be removed from the enclosure.
14.2
ASSEMBLY PROCEDURE (refer to figure 5)
A.
Check the condition of the connector gaskets (6, 7, 8) and replace as necessary.
B.
Place circuit board assembly (5) in enclosure (1).
C.
Install and securely tighten four screws (13) to secure board in enclosure.
D.
Install connector gaskets and install connectors into enclosure with keys oriented toward the
bottom of the box.
E.
Install sixteen new screws (9) into connectors and tighten securely.
F.
Retest the Diagnostic Module per sections 4.0, 7.0 and 8.0 to verify correct operation.
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