Teac FD-55 Series - Operating conditions of head load solenoid

2-2-3-5. Operating conditions of head load solenoid
This item applies only for the models with the head load solenoid and
not applies to the CSS models (without head load solenoid) .
Table 207 shows the operating condition of the head load solenoid.
Three head load conditions can be selected by four straps of HL, SM,
HS, and HM.
Selection
Strap
combinations
Head load conditions
No.
HL
SM HS
HM
1
-
ON
-
ON
Ready
+ pre-ready
2
-
ON ON
-
DRIVE
SELECT x tReady
+ Pre-ready)
3
ON
-
-
-
(DRIVE SELECT +
MX)x(~eady + Pre-ready)
x HEAD LOAD
Notes: 1. li_li mark indicates the off-state of the strap.
2. Any other strap combinations than the above will not be used
practically.
3. Never set HS and HM straps on at the same time.
tTable 207} Head load conditions
(1) Selection 11
When the FDD is in ready or pre-ready state by an external rotation
command of the spindle motor <-MOTOR ON signal or front bezel indicator
turn-on command), the head loading will be executed.
Ready state (or pre-ready state) means that a disk is inserted, front
lever closed, and the disk rotates normally.
(2) Selection 12
When the condition of Selection 11 is satisfied and when the DRIVE SELECT
~ignal selected by DSO ~ 3. straps is TRUE, the head loading is executed.
- 242 -