In Use Pins (Us); Read Data Pins (Rd); Busy Lamp Jumpers (Bu, Bs); Busy Lamp On During Head Load - NEC FD1165 Maintenance Manual

Table 2-4 Door Lock Jumper Combinations
JUMPER POSITION DOOR LOCK LOGIC (SIGNALS NEEDED FOR
DOOR LOCK TO OCCUR)
DR DL
DH
1 1 1
ROY
·
(HLD • DSX)
+
(USE AND DSX)
1
1 1 RDY
·
{HLD • DSX {
+ (USE AND DSX) + DLH
1 2 2
ROY
·
(HLD • DSX)
+
USE
+
DLH
1 2
1 RDY
·
(HDL • DSX)
+
USE
2
2 1
HLD • DSX
+ USE
2
2 2 HLD • DSX
+ USE
+ DLH
RDY
= Ready
.
=
And
HLD
=
Head Load
+
=
Or
DSX
= Drive Select
USE
=
In Use
DLH
= Door Lock Hold
2.8.7 In Use Pins (US)
The In Use pins are solder-type pins; they cannot be
selected by jumper. To enable the In Use signal, solder Pin
1 to the center pin. To disable the In Use signal, solder
Pin 2 to the center pin. The disk drive is supplied with
USI connected to the center pin.
2.8.8 Read Data Pins (RD)
The read da ta pi ns are solder- type connec tor s. To enable
the Read Da ta signal, solder Pin 1 to the cen ter pin. To
enable the Standardized Read Data signal (for the VFO op-
tion), solder Pin 2 to the center pin. The Model FDl165 is
supplied with ROI connected to the center pin.
2.8.9 Busy Lamp Jumpers (BU, BS)
The busy lamp jumpers determine the conditions under which
the busy lamp will be on. The unit is supplied with BU2 and
BS2 selected.
2.8.9.1 Busy Lamp On During Head Load
To have the busy lamp on when a Head Load signal is present,
select BU2 and BS2.
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