IBM 5280 Maintenance Information Manual page 107

Page of SY31-0602-0
As updated December 5, 1980
By TNL SN20-9590
DANGER
Capacitor discharge voltage might be present at the
socket when the AC drive motor power cable is
disconnected.
13. Disconnect the AC drive motor power cable
ID.
14. Remove the timing pin.
15. Power on.
16. Insta" a jumper from
fJ
(ground) to
II
(-disable
stepper motor).
17.
31SD
Insta" a jumper from
D
(ground) to
II
(MC-O).
II
o TPA06
O i~:
TPC
TPD
TPE
TPF
TPG
TPH
o
0 0 0 0 0
TPBOl
o o TPCOl
OTPDOl
TPA
TPB
TPC
TPD
16 Head/Carriage Assembly
II
18. If the timing pin passes freely through the stepper
motor pulley into the timing hole in the casting,
go
to
step 23. If the timing pin does not pass freely,
proceed with step 19.
19. Remove the timing pin.
20. Remove the jumpers installed in steps 16 and 17.
21. Power off.
22. Go to 339 step 5.
23. Remove the timing pin_
24. Go to 339 step 13.
o
0
oTPHOl
0 0
o TPAOl
341