Fujitsu M255XK Customer Engineering Manual page 39

5 1/4" mini-flexible disk drive
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~: ~ ----------r_---;~~r_----~
DSRij
STR
~
DM2
C'
DMl
•.
MOFD
.
LA LB LC
nmr:n
IIIl:II:JI
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o
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Figure 4-1C M2552K Revision 1 Circuit Card - Jumper Locations
Table 4-5C M2552K Revision 1 Circuit Card
Jumper Definitions
Factory
Jumper
Definition
Open
MS
Motor on with Drive Select
Install
MM
Motor on with pin 16
(050)
050-3
Drive Select
Install
TM
Terminator for input signal lines
Open
JPl
No Index during Step
Open
JP2
No Read Data during Step
Install
RY
Ready to pin 34
*
DO
Door Switch Ready to pin 34
Open
DC
Disk Change to pin 34
Open
In Use
LED Lit with pin 4
(*)
HL
Head Load with pin 4
Open
HM
Head Load wi th pin 16
Open
HS
Head Load wi th Select
Open
LC
LED Lit with Drive Select and Ready
Open
LB
LED Lit with LED 0
Install
LA
LED Lit with Drive Select
Install
DM2
FWS3 Active
Open
DM1
FWS2 Active
Install
MOFD
Motor-Off Delay
TS-021-013087 ••• 01
4-7
DS!
~--I
DS2
DSO
TM

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