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ASTAT
®
-IBP Plus Service Instructions
Prices and data subject to change without notice. 3
Power Supply Board Replacement
The Power Supply Board is located as shown in Figure 5.
It contains gray and orange transformers visible from the
sides.
1. Remove the following components:
a. The cover, as described in steps 1–2 of Cover
Removal and Replacement.
b. The Logic Board, as described in steps 2–3 of
Logic Board Replacement.
2. Remove the four screws holding the Power Supply
Board to the black plastic housing, as shown in
Figure 6.
3. If a yellow-green wire is connected to the bottom of
the Power Supply Board, it must be disconnected.
Lower the top of the Power Supply Board to view the
red and white gate leads to the SCRs, as shown in
Figure 7.
NOTE: Check the red and white gate wires for a marked
number before removing these wires. Each gate wire
must have a number corresponding to the terminal
numbers (1–12) on the Power Supply Board to facilitate
reassembly.
NOTE: Vérifier les chiffres sur les fils de porte avant
d’enlever ceux-ci. Chaque fil de porte doit avoir un
chiffre correspondant aux chiffres de la borne (1–12)
sur la plaque de la boîte d’alimentation pour faciliter le
réassemblage.
4. With a small screwdriver, remove the red and white
gate wires from the small four-point gate Terminal
Boards, one on the component side and two on the
solder side of the Power Supply Board.
These wires must be reconnected to the new Power
Supply Board at the proper number terminals for
proper operation of the starter.
5. Lift off the Power Supply Board. Remove and save
the hex stand-offs, nuts, and washers from the Power
Supply Board for use on the replacement board.
6. Attach the stand-offs to the new Power Supply Board.
Place the new Board in position in the ASTAT-IBP.
Figure 5. Location of the Power Supply Board.
Figure 6. Removing the screws holding the Power Supply Board
to the housing.
Figure 7. Gate leads, Power Supply Board, and Protection Board.
Gate Leads
Protection Board
Bottom of Power
Supply Board
Gate Terminal
Board
Screw
Power Supply Board
Ribbon Cable