Write Protect Feature; Model Fdd100-5 Disk Drive, Block Diagram; Track 00/39 Stop And Head· Load Pad Adjustment - Siemens Microfloppy FDD100-5 Operating And Maintenance Manual

DRIVE MOTOR (12V)
COMPOSITE
READ DATA
WRITE GATE
COMPOSITE
WRITE DATA
WRITE
PROTECTED
+5V.12V
IN DEX[SECTOR
DRIVE SELECT
0*.1,2,3
HEAD LOAD *
TRACK .00
MOTOR ON
STEP
DIRECTION
READ
LOGIC
WRITE
LOGIC
CONTROL
LOGIC
SERVO
CONTROL
LOGIC
I
READ DATA
I
WRITE DATA
ERASE
WRITE
PROTECT
L_
WRITE PROTECT
SENSOR
INDEX/SECTOR
TACHOMETER
HEAD LOAD
TRACK
.0.0
,,---I
----I-
I
I
tit
TRACK 00
SWITCH
l
HEAD LOAD
~_I----.
SOLENOID
I
I
I
I
I
I
I
I
I
I
\:K::,J
ENVELOPE
SELECT
CONTROL
LOGIC
STEPPER PHASE ¢1. ¢2, ¢3. ¢4
PRINTED WIRING
BOARD
ACTIVITY
LIGHT
*OPTIONAL FEATURE
Figure 4-1. Model FDD100-5 Disk Drive, Block Diagram
4-2