Teac FD-55 Series - 237

2-2-3-3. Turn-on conditions of front bezel indicator
Table 205 shows the turn-on condition of the front bezel indicator.
Six combinations can be selected by four straps of IU, UO, Ul and UR.
Selection
Strap combinatio~
No.
IU
UO
Ul
'UR
Indicator turn-on conditions
1
-
-
-
-
DRIVE
SELEC'r
2
-
-
-
ON DRIVE
SELECT
x Ready
3
ON
ON
-
-
IN
USE
4
ON ON ON
-
IN USE
latch
5
ON
- - -
DRIVE
SELECT
+
IN USE
6
ON
-
ON
-
DRIVE
SELECT
+
IN
USE"' latch
Notes: 1. li_ti mark indicates the off-state of the strap.
2. Any other combinations of straps than the above will not
be used practically.
3. Never set UO and UR straps on at the same time.
(Table 205) Front be~el indicator turn-on conditions
(1) Selection 1
When
the DRIVE SELECT input signal selected by DSO ~ 3 ~traps is TRUE,
the indicator turns on.
(2) Selection 2
When the condition of selection 1 is satisfied and also the FDD is in
ready state, the indicator turns on. Ready state means that a disk
is inserted, front lever closed, and the disk rotates normally.
Refer to item 1-8-3 (13) in FD-55 Specification for details.
(3) Selection 3
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