Fujitsu M255XK Customer Engineering Manual page 37

Table 4-5A M255JK/54K Revision 2 Circuit Card Jumper Definitions
M255JK M255JK
and and
M2554K M2554K M2554K M2554K
High
Low
Dual IBM
Density Density Speed PC/AT Jumper Definition
Install Open Open Install
1 SP
360 RPM Only
Open
Install
Install Open 2 SP Motor speed and R/W circuits changed
in tandem
Install
Open Open Open HD High Density sense output
Open
Open Install Install LSP Density controlled by pin 2
** ** **
Open
In Use LED Lit with pin 4
(X) (X) (X)
Open
HL
Head Load with pin 4
Install
Install Install Install TD Terminator for Drive Select
Install Install Install
Open
MR Pin 34 gated with Drive Select
(*) (*) (*) (*)
HM
Head Load with Motor-on
(*) (*) (*)
Open HS Head Load with Drive Select
DSO
DSO DSO DS1 DSO-3 Drive Select
Install Install Install
Install TM Terminator for input signal lines
Install Install Install Open RY Ready to pi n 34
** ** **
Open DO Door Switch Ready to pin 34
** ** **
Install DC Disk Change to pin 34
Open Install Open Open 300 Low Density 300 RPM always
Open Open
**
Open SM1 Densi ty and Speed Control Latched
Open Open
**
Install SM2 Densi ty and Speed Control Unlatched
Install Install Install Open DSR Disk change reset with Drive Select
(*) (*) (*)
Install STR
Disk change reset with step
(*) (*)
(*)
Open MS
Motor on with Drive Select
Install Install
Install Install MM Motor on wi th pin 16
Open Open Open Open JP3 Motor always on'
Install Install Install Install DK1 Disk-in Sensor Enabled
Open Open Open Open DK2 Disk-in Sensor and Dynamic Clamping
Disabled
Open
Install Install Open DM2 FWS3 Active
Open Open Open Install DM1 FWS2 Active
** ** **
Open MOD Motor-Off Delay
(*) (*) (*)
Open DL Door Lock with LD, LC, LB or LA
Open Open
Open Open JP4 Undefined
Open Open Open Open JP1
No Index during Step
Open Open Open Open JP2 No Read Data during Step
** ** **
Install RI Index gated with Pre Ready
Install
Install Install Open DI
Index Gated with Drive Select
** **
**
Open LD LED Lit with DL1 or DL2
** ** **
Open LC LED Lit with Drive Select and Ready'
** ** **
Open
LB
LED Lit with LED 0
Install Install Install Install LA
LED Lit with Drive Select
Open Open Open Open DL1 LED Lit with Drive Select
and Head Load Ready
Open Open Open Open DL2
LED Lit with Drive Select or
In-use Latch and Head Load Ready
TS-021·013087 ••• 01
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