Service manual

2-
4
IL DOUBLE-DENSITY DISK CONTROLLER
HARDWARE UNIT ZERO (DS1)
u
HARDWARE UNIT ONE (DS2)
[,,.,.J ~ ~Ir-- _~
CUT PROGRAMMING
[~~~,~J ~I,n,~"l MODULE
u
HARDWARE UNIT TWO (DS3)
'----~}
INSET
B
L ODD
H~MSSSH
M
K
X3
2
1
S
~
NOTE: CONNECTOR PINS
AT HM MUST REMAIN
OPEN lUNSHORTENEDl.
Figure 2-4
Single-sided drives (H-17-1) programmed for
Z-89-37 Controller.