PS
S5.3
5230
001
Version no
T-code
F-code
Section
C-code
SCR Component Checks
184
Service Manual
1997-04-15
When replacing module semiconductors such as:
11.1. 1REC, 2REC or 5REC
1
Remove all module connections. (As required)
2
Remove module by backing out the two screws at the
device sides.
3
Clean the insulator surface with a clean rag and
isopropyl alcohol.
4
Inspect the insulator surface for tears or cracks. If
defective, replace. Wipe a light layer of machine oil on
the base and smooth the insulator into position.
5
Coat insulator with a light coat of heat-transfer grease
similar to GE-350.
6
Set new module on insulator and start screws back
into base. Be sure to use the original screws and
washers. Run screws into base “finger tight”.
7
Check that the bottom of the module is flat against the
insulator or base.
8
Alternately tighten the two screws by 1/4 turn until firm.
9
Replace all connections removed in step 1.
11.2. Capacitor
Remove nuts from capacitor connections and remove
wires.
Remove hold down brackets and lift out.
Reverse procedure to replace capacitor.
NOTE! The use of heat-transfer grease (such as GE
Versilube
G-350-M
or equivalent) is
recommended.
NOTE! Insulator not required for 2REC and 5REC.
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