Read Error Ido 5.5 A; Interchangeability Error; Trouble Analysis; Trouble Analysis Procedure - Panasonic JU-475-4 Service Manual

5.4
5.5
5.6
6.1
Read Error
Most read errors are soft errors. Data can be recovered by following the recovery procedure in
section 5.2.
Seek Error
Seek errors are caused by the following.
(1) Stepper motor or stepper motor drive circuit is faulty.
(2) Faulty Carriage
Interchangeability Error
(1) Head misalignment: Refer to Adjustments and Confirmation section 9.6.
(2) Head output too low: Refer to Confirmation section 9.3.
(3) Motor speed difference: Refer to Adjustments and Confirmation section 9.1.
(4) Format incompatibility. |
TROUBLE ANALYSIS
Trouble Analysis Procedure
FDD trouble may occur in any of the following ten forms.
(1) Index detection failure
(2) 1/O 34pin signal failure (Disk Change / Ready / Media In / Media Out)
(3) Track O undetectable
(4) Noseek
(5) Nowrite
(6) Noread
(7) Readerror
(8) INUSE LED won't light.
(9) Write protect undetectable
(10) No head load (5.25inch FDD with optional head loader)
Check with the troubleshooting flowchart in section 6.2.
CAUTION: