ASTAT ®-IBP Plus Service Instructions

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.

Power Supply Board

Ribbon Cable

Figure 5. Location of the Power Supply Board.

Screw

Figure 6. Removing the screws holding the Power Supply Board

to the housing.

Gate Leads

Protection Board

Bottom of Power

Gate Terminal

Supply Board

Board

Figure 7. Gate leads, Power Supply Board, and Protection Board.

Prices and data subject to change without notice.

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GE DEH-40417 manual Location of the Power Supply Board