NEC D2246 Maintenance Manual page 151

Table C-4 Drive Status Reports (cont'd)
DISPLAY
DRIVE ERROR
STATE CODE ERROR CONDITION SUGGESTED PROCEDURES
4 4 No motor rotation Check lock control lever. Re-
place G9QSQ PCB.
5 Voltage fault Check source voltage.
5 2 Insufficient motor speed
Check source voltage. Check
cable connector. Replace G9QSQ
PCB. Replace G9QST PCB. Re-
place the unit.
5 3 Excessive motor speed See Fault 52.
6 Voltage fault Check source voltage.
6 2
Motor speed loss Restart motor. If fault 43 or 44
occurs, replace G9QSQ PCB.
Replace G9QST PCB. Replace
the unit.
6 3 Excessive motor speed
See Fault 52.
7
Voltage fault Check source voltage.
7 2 Motor speed loss See Fault 62.
7 4
Loss of index
Check the tripulse output. If tri-
pulse is available, replace G9QST
PCB. Replace unit.
If tripulse is not available, re-
place G9QSQ PCB. Replace unit.
7 5 Inner guard band (1GB) not Replace G9QST PCB. Replace
found
unit.
8
Voltage fault Check source voltage.
8 4 Loss of index See Fault 74.
8 5 Outer guard band (OGB) Check lock control lever. Verify
not found current flow in the voice coil.
Replace G9QST PCB. Replace
unit.
8 6 No N linearity found Replace G9QST PCB. Replace
unit.
No half track found Replace G9QST PCB.
No Q linearity found Replace G9QST PCB.
C-8