Electrical Specifications Of The Output Signals - Epson SMD-100 series Specification

(1) When pin No. 1 (lU) is shorted
The tED 1s controlled by the in use signal (pin No. J2-4).
(2) When pin No. 2
(10)
is shorted
The LED i5 controlled by the drive select signal.
(l) When pin No. 3 are sharted.
The LED illuminates only when the in use signal,the drive select
si,nal and motor on signal are all active.
(10 1s shorted as the factory-set condition.)
4.1.5
Electrical specifications of the output signals
SN7438(TI) or equivalent 1s used as the output drive for SHD-l00 series
disk drives.
'(7
" J
':"
SMO-l00 leri8, dl.k drIve
-;;:
SN " 414
or .qulvalenl
HOlt
Iv,tem
dlsk drive
"Low" ;:;
TRUE
"High" ::; FALSE
VIN~
I
IN:
VIN:
I IN:
+0 to +O.4V
4
Qn
1\
(M
A X)
+2.5 to +5.25V
OmA
(open)
4.1.6
( 1)
Funct10n of the output signals.
Ready
(RDY)
This signal goes low to indicate
correctly set in the drive and
detector is provided to detect
control the ready signal.
that the disk cartridge has
15 rotating normally. In the
the presence of the disk cart
been
SMD-l00, a
ridge and to
11