IBM 6580 User 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 ! Lj ___ 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

IBM 6580 Specifications

General

Brand	IBM
Model	6580
Category	Desktop
Language	English