
Maintenance and Troubleshooting
ADDvantage-32 PLUS ● AC to DC Power Converter
7-45
DC54X
DC85X
DC155X
-2, -4
DC155X
-A,-B/DC300X
165-185 in-lb.
335-365 in-lb.
390-420 in-lb.
3. Attach cable connector P1 on all modules.
4. Replace the front panel.
5. Reconnect the ground wire(s) to the front panel.
6. Reapply power to the unit.
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C A U T I O N
IT IS NECESSARY TO FOLLOW THE TORQUE
SPECIFICATIONS TO INSURE PROPER OPERATION
AND RELIABILITY OF THE UNIT.
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7.10.2 REPLACING THE FIELD THYRISTOR AND DIODE CR1, CR2
7.10.2.1 Disassembly
1. Remove power from field supply assembly.
2. Unlatch door of main assembly. (Latches are located on the right side of unit.)
3. Open the door. The bridge interface board (A3) will be exposed.
4. Remove the cables from connectors J2 and J3.
5. Disconnect cable connectors J5 and J6 on the bridge interface board and move the
cables out of the way.
6. Loosen the two captive screws holding the bridge interface assembly to the base
assembly.
7. Open the bridge interface assembly. The field thyristor (CR1) and field diode
(CR2) will be exposed.
8. Unplug the gate leads on the bottom of CR1. Note the connection placement.
Twisted pairs of gate lead wires are labeled with a single letter corresponding to a
letter silkscreened on the base.
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