GE Industrial Solutions ASTAT-CD Plus Solid-State Starters - Manual (Page 15)

To replace the Protection Board.
NOTE: POWER MUST BE REMOVED
BEFORE SERVICING.
Step 17. Remove the Cover, steps 1-3, and remove the
Logic and Power Supply Board assembly by
removing 4 screws holding the Power Supply
Board to the black housing. If a
yellow/green ground wire is connected to
the bottom of the Power Supply Board, it
must be disconnected. Lower the Logic and
Power Supply Board assembly (Figure 8).
Remove the blue and yellow gate leads per
steps 13 and 14.
6-point Terminal Board
Protection Board
6-wire connectors
Power Supply and
Logic Board assembly
Figure 8. Board location
6- point Terminal
Board
Protection Board
Wire connectors
Mounting screw
Figure 9. Remove wire connectors
Step 18. Remove 6- wire connectors from the
Protection Board (Figure 9). Note the
locations of these terminals for reassembly.
ASTAT-CD Plus Service Instructions
15
These wires must be reconnected to the new
Power Supply Board at the proper numbered
terminals for proper operation of the starter.
Remove the Power Supply Board. Remove
the hex standoffs, nuts and washers from the
Power Supply Board for use on the
replacement boards.
Step 15. Reassemble the standoffs to the new Power
Supply Board. Reconnect the gate wires,
(ground wire if removed), screws and Shield
Board and standoffs (if removed). Reference
Figure 7 for gate lead connections.
Step 16. Reassemble the Logic Board, cover and
terminal connectors using Steps 7-10.
Figure 7. Gate lead connections
Y = yellow wire. B = blue wire.
SCR lead pairs are to be twisted to
reduce EMI (not shown in sketch).