NEC D2246 Maintenance Manual page 152

Table C-4 Drive Status Reports (cont'd)
DISPLAY
DRIVL
L.I.'-.I.'-'-J.I.'-
STAT~
CODE.
ERROR CONDITION SUGGESTED PROCEDURES
8 9 No zero difference found
Replace G9QST PCB.
I
8
1
A
I
Target velocity not obtained Readjust the servo circuit. Re-
I
I
I
place G9QST PCB.
!
!
!
!
8
!
B
!
Servo circuit fault See Fault 8A.
!
! !
I
I
!
8 C
I
Over-shoot check See Fault 8A.
I
8
I
D
!
Over-shoot check (time out) See Fault 8A.
I
!
i
9 1
I
Voltage fault Check source voltage.
I
9
A
Loss of index See Fault 74.
i
.,.
!
9
I
5
I
Only OG B detected Replace G9QST PCB. Replace
unit.
9 9
I
No N linearity found See Fault 86.
9 C Over-shoot check See Fault 8A.
9
I
D Over-shoot check (time out) See Fault 8A.
A 1 Voltage fault
Check the source voltage.
I
A 2 Motor speed loss See Fault 72.
A
!
3 Excessive motor speed See Fault 52.
I
A
4
Loss of index
Check the tripulse or cylinder
!
concerned. If index signal found,
I
1
replace G9QST PCB. If index
j
signal missing, replace unit.
!
A C
R/W positioner off track
See Fault 8A.
B 1 Voltage fault Check the source voltage.
B
4
Loss of index See Fault A4.
B 9 No zero difference found Replace G9QST PCB.
B C Over-shoot check See Fault 8A.
B D Over-shoot check (time out) See Fault 8A.
B E OGB
d~L~~L~d
..l
.~
...,
C-9