Control Data Corporation CYBER 180 810 Maintenance And Parts Manual page 99

7. Remove gun completely from pin. Correctly wound wire is tight on pin
with seven turns as shown in figure 6-1. An incorrectly wound wire is
loose and has overlap or gaps.
8.
Repeat removal steps
2
through
4
and replacement steps
2
through
8
for
an incorrectly wrapped wire.
9.
Apply chassis power by following Computer Cabinet Power Up procedure
steps 4 through 8.
10. Perform checks/diagnostic tests to confirm success of repair.
LOGIC
PAK
REMOVAL
NOTE
Approximately 25 nun (1 in) of insulation
should be stripped off the wire. The
twisted pair should not be unwrapped
more than 25
nun
(1 in). An acceptable
wrap (figure 6-1) should have seven
turns of bare wire and at least one
turn of insulated wire.
CAUTION
ESD protection guidelines must be followed
during the following procedure.
1.
Remove power from computer cabinet by following computer Cabinet Power
Down procedure steps
1
through
4.
2. Remove pak using extractors at top and bottom.
REPLACEMENT
1.
Position pak on wire cage guides.
2.
Seat pak in connector with equal thumb pressure on top and bottom pak
extractors.
or
2. Slide pak in until it stops at connectors,· then use push- in tool to
gently seat the pak.
3. -Apply power to computer cabinet following Computer Cabinet Power Up
procedure steps 4 through 8.
60469500 A 6--5