410  Power On/Off Actuator Switch and Cable Check 
Removal/Replacement Procedure 
Actuator/Cable Check Procedure 
1. 
Power 
off 
the 5363  and disconnect the power cord 
at 
the customer power outlet. 
2. 
Remove the covers ("305  Cover Removal" 
on 
page  3-2). 
3. 
Rotate the cable coupler one 
half 
turn 
clockwise 
to 
disconnect the cable from the power supply. 
4. 
While setting the power switch 
on 
and 
off, check for cable movement 
of 
approximately 6.35 
mm 
(1/4 
inch) 
at 
power supply end. 
5. 
If 
the cable does 
not 
move approximately 6.35 mm, disconnect the cable from the actuator. 
6. 
Verify 
that 
the cable moves freely within the tube. 
7. 
If 
the cable does 
not 
move freely,  replace the cable. 
See 
"Actuator/Cable Removal/Replacement 
Procedure" in this procedure. 
8. 
If 
the cable moves freely, check the 
actuator 
to verify 
that 
the actuator mechanism, when set 
on 
and 
off, 
is moving approximately 6.35 mm. 
9. 
If 
the 
actuator 
does 
not 
move 6.35 mm, exchange the actuator. 
See 
"Actuator/Cable 
Removal/Replacement Procedure" in this procedure. 
10. 
If 
both 
the cable 
and 
the actuator function correctly, connect the cable 
to 
the power supply 
and 
manually 
power 
on 
the power supply by pulling the cable approximately 6.35 mm. 
11. 
If 
the cable 
can 
be moved the 6.35 mm, 
and 
the power supply does 
not 
power on, connect the cable 
to 
the 
actuator 
and 
go 
to 
"420  Power Supply 
FRU 
Isolation Procedure" 
on 
page  4-6, step {420LI2}. 
12. 
If 
the cable 
can 
be moved the 6.35 mm, 
and 
the power supply does power on, connect the cable 
to 
the 
actuator, this procedure is then complete. 
Actuator/Cable Removal/Replacement Procedure 
1. 
Power 
off 
the 5363 
and 
disconnect the power cord 
at 
the customer power outlet. 
2. 
Remove the covers ("305  Cover Removal" 
on 
page  3-2). 
3. 
To 
remove the actuator, disconnect the cable from the actuator 
and 
remove two screws 
that 
attach 
the 
actuator to the 5363 
frame, 
4. 
To 
install the new actuator, perform. the previous step in reverse order: 
5. 
To 
remove the actuator cable from the 
actuator 
and 
the base power supply, rotate the couplers one 
half 
turn 
clockwise. 
6. 
Lift 
out 
the power 
on/off 
cable assembly. 
7. 
To 
install the new cable assembly, perform. previous steps 6 
and 
5 
in 
reverse order. 
Note: 
When reinstalling the actuator into the 5363  frame, install the housing with bevelled edge facing up, 
and 
towards the diskette drive. 
If 
this note is 
not 
followed,  the 
on 
and 
off 
switch setting will be 
reversed. 
4-4 
5363 
Maintenance Information