Fujitsu M2361A Customer Engineering Manual page 138

(8) Fault and Error Detection
Faul ts and errors detected in the dri ve are displayed by the maintenance - aid
LEOs on the display panel and reported to the controller through the interface
lines.
a. Fault Register
No.
1
2
3
4
5
6
7
8
9
10
11
12
If the following errors occur, the Fault register will be set and
Fault line will be enabled.
Table 4.6.2 Write/Read check conditions
Write/Read Check State Conditions LED Rotary SW
Index Check (RG + WG). IDXCK Bit 0
Control Check RG.DSKER
RG.WG
OFACT.WG
Bit 1
RONLY.WG
Not Sync Check
RG.NSC Bit 2
Head Short Check
(RG + WG).HDSHT
Bit
3
R/W
Write Current On Read Check RG.MUSFV Bit
4
Write Transition Check WG.MUSFV
Bit
5
Delta I Write Check WG.DIECK
Bit
6
Servo Off-Track
WG.RWCAP.(URDY+TFTMR+ACCK)
RG.EQUAL
Bit
7
Deskew Error
RG.DSKER Bit 0
R/W Gate Check
RG.WG Bit 1 CItC
Offset Active Check
OFACT.WG Bit 2
Read Only Mode Check
RONLY.WG
Bit
3
These faults can be cleared by one of the following:
Depressing the Fault Clear switch on the operator panel
Fault Clear signal sent from the controller
Depressing the MRTZ swi tch on the display panel
b. Seek Check Latch
No.
1
2
If seek error occurs in the drive, the error will set Seek Check
Latch, enabling Seek Error to the controller, and light the
maintenance-aid LED.
Table 4.6.3 Seek error fault conditions
Access State Conditions LED Rotary SW
Access Timeout Check Timeout in direct or RTZ seek Bit
1
Over Shoot Check
Any Guard Band in direct seek, or Over Bit
2
ACC
track-crossing pulse in settling
B03P-4825-0002A ... OIA
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