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1.44 MB FDU
FG
JUMPER
DS0
Drive selected as DRIVE 0 on pin 10
DS1
Drive selected as DRIVE 1 on pin 12
DS2
Drive selected as DRIVE 2 on pin 14
DS3
Drive selected as DRIVE 3 on pin 6
RY34
READY output on pin 34
DC34
DISK CHANGE output on pin 34
DC2
DISK CHANGE output on pin 2
HA
Density set automatically by the sensor
HI2
Density set by HD IN on pin 2
HO2
HD OUT output on pin 2
IR
LED on: Drive Select * Ready
ACD (A) or (B) Auto-checking at power on enabled
REN
Auto-recalibration at power on disabled
FG
The drive's ground is connected to the ground of the PCBA
board
JUMPERS
METHOD
HO2
HI2
1
OFF
ON
2
OFF
OFF
3
ON
OFF
4-20
TEAC FD235HF-6573
HA
HS
IR
HO2
0V
HO
ACD (B)
DC34
34
ACD (A)
RY34
RY
0V
REN
6
DS3
DS
DS2
14
FUNCTION
INPUT
OUTPUT
HA
PIN 2
PIN 2
OFF
HD IN
Open
ON
Open
Open
ON
Open
HD OUT
Peripherals - Pocket Service Guide
SA450
HI
HI2
2
DC2
DC
12
DS1
DS
DS0
10
SETTING
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
DENSITY SET
HD
LEVEL
HOST SIDE
FDU SIDE
High
Key-in or
HD IN from
software
host
-
Key-in or
Automatic
software
from sensor
Low
HD OUT
Automatic
from FDU
from sensor
3.5" MICRO FLOPPY DISK DRIVES
ON
ON
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