C
HAPTER
3. M
AINTENANCE
P
ROCEDURES
3-21
02.9654.0010
CONFIDENTIAL
23-Jan-98
3.3.9
Control PCB Removal and Replacement
Parts:
1 EA
PCB ASSY, POWER PACK CONTROL (24.9654.0020)
2 EA
CABLE TIE, SMALL .10 X 4” (55.2186.0001)
Tools:
Screwdriver, Phillips #1
Screwdriver, Phillips #2
Wrench, 3/8”
Wire cutters
To remove and replace the control PCB:
Step 1.
Remove C3/APS6 module. Refer to C3/APS6 Module
Removal and Replacement paragraph.
Step 2.
Remove power supply. Refer to Power Supply Removal and
Replacement paragraph.
Step 3.
Remove front panel assembly. Refer to Front Panel Assembly
Removal paragraph.
Step 4.
At removed front panel assembly, disconnect five 90 degree flag
connectors from line filter.
Step 5.
At right side of mounting plate, use screwdriver and 3/8”
wrench to remove two 6-32 x 5/16”PFZ screws and 6-32 KEPS
nuts securing two ground wire lugs.
Step 6.
Between line filter and front plate, use wire cutter to remove
two cable ties securing wires to cable anchors.
Step 7.
At control PCB, remove MTA wire connectors from headers at
J3 ANALOG OUT, J7 S300 I/O, and J2 24V IN.
Step 8.
At front panel, use #1 Phillips to remove four M3 x 5MM PPB
metric screws securing DMX connectors to front panel.
Step 9.
At either side of mounting plate, use #1 Phillips to remove two
4-40 x 1/4”PFZ screws securing mounting plate to front panel.
Step 10.
Remove mounting plate assembly.
Step 11.
At control PCB, remove two 6-32 x 7/16”PPZ screws and #6
lock washers securing PCB to front plate.
Step 12.
Remove control PCB.
Step 13.
Replace control PCB assembly using Steps 1 through 12 in
reverse.
