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Chapter 11
9. SHORT PLUG AND FRONT LED
9-1. Short Plug
The assignment of each pin is shown Fig. 9 - t .
FRONT SIDE
J1
o o o o ..................................................o o
o o o o ..................................................o o
13 1 2 1 1 ,1 0 ................................................ 2 , 1
CONTROL PCB
u
:
Fig. 9-1 Short Plug
This diagram shows the side of the drive.
CHINON FZ-506 high density 1.6 MB to 1 MB switchable floppy disk drive can be configured in several
modes of Operation using "SHORT-PLUGS" according to the table below.
Mode descriptions
Connector "J1 "
1
2
3
4
5
6
7
8
9
10 11 12 13
1.6 MB to 1 MB variable speed switchable using
Pin # 2 as change-over Signal input
Pin #2: High = 1.6 MB (360 rpm)/Low = 1 MB (300 rpm)
*1 Pin #2: High = 1 MB (300 rpm)/Low = 1.6 MB (360 rpm)
o
-
-
o
1.6 MB to 1 MB switchable at 360 rpm, IBM PC/AT compa-
tible, Pin # 2 as change-over input
Pin #2: High = 1.6 MB (360 rpm)/Low = 1 MB (360 rpm)
o
-
o
-
-
o
-
o
-
-
o
1.6 MB 360 rpm non-switchable
(Disregards pin # 2 Signal)
O
0
-
-
-
o
-
o
-
_ _
o
-
12: READY
*1
: T h e s h o r t- p lu g is fa c to r y s e t a t th is P o s itio n .
-jg .
DISK CHANGE
"O"
= Position closed
= Position open
Note: Position 1 through 5 of the " J 1" are designated as follows.
POS. 1: Connect the termination resistors when closed
POS. 2: Configure the drive as "DRIVE 0" when closed
POS. 3: Configure the drive as "DRIVE 1" when closed
POS. 4: Configure the drive as "DRIVE 2" when closed
POS. 5: Configure the drive as "DRIVE 3" when closed
Note: Only one of the positions 2 through 5 of "J1" can be closed. Above example demonstrates in the case
of "DRIVE 0" and the termination resistors connected.
PIN # 2 : Card-Edge Connector (PJ1 )-2
9-2. Front LED
The front LED lights when the DRIVE SELECT
Signal
selected by the short plug is set to low level.
11— 54
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