Power/Signal Distribution - IBM 6360 Product Support Manual

Track Location 48 49 50
51
52
53 54
Access
(j)
+ +
+
Access 1 + +
+
+
+
I ndicates an active state.
- Indicates an inactive state.
Figure 7-19. Stepping Signal Sequence
POWER/SIGNAL DISTRIBUTION
Three external cables connect the sys-
tem and the diskette drive unit; AC
power, DC power, and the signal dis-
tribution cable (Figure 7-20). All
the cables are one meter (40 inches)
long.
The AC power for the diskette unit is
supplied through a three-wire cable
from the system power supply. AC pow-
er inside the unit is distributed to
drive· assemblies and a fan. When the
SYSTEM ELECTRONICS
55
+
SYSTEM
CARD
INTERNAL
CABLES
SIGNAL
DISTRIBUTION
DC
DISTRIBUTION
POWER SUPPLY
AC
DISTRIBUTION
56 57 58 59 60 61 62
63 64 65 66 67
+
+
+ + +
+ +
+ + + + +
system power is on, the AC drive
motor(s) and the fan run continuously.
The DC power is distributed from the
system power supply through a 16-wire
cable to the diskette adapter card.
The signal cable is a 56-wire shielded
cable connected from the system elec-
tronics to the diskette adapter card.
An internal cable connects the file
control card to the diskette adapter
card.
DISKETTE DRIVE UNIT
r-----------.
I
RIGHT DRIVE :
I
ASSEMBLY
I
DISKETTE r.l- --,
(OPTIONAL)
I
ADAPTOR
r-:
I
FI LE
I I
~.J
I
CARD
I .. , I
~
_ _
~
I
I I
l.J
I
: B4LJ
!
L j ___ J I
L ___________________
.J
I
I
I
r----..,
I
I
IACMOTOR
I
I
L _ _
.J.. _ _
T _ _
.L. _ _ ...J
_ _ _ _ _ _ _ _ _ ...J
FAN
Figure 7-20. Diskette Drive/System Interface
Chapter 7. Diskette Unit 7-19