Toshiba Libretto 50CT/70CT Manual

3.17  Hard Disk Test Detail Status3 Tests and Diagnostics3-36Libretto 50CT/70CT Maintenance ManualTable 3-4  Error register contents
BitNameDescription7BBK1
(Bad block
mark)“0” — Not used
“1” — A bad block mark is detected6UNC
(Uncorrectable)“0” — There is no uncorrectable data error
“1” — Uncorrectable data error has been detected5——Not used4IDNF
(Identification)“0” — Not used
“1” — There was no ID field in the requested sector3——Not used2ABRT
(Abort)“0” — Not used
“1” — Illegal command error or a drive...

3 Tests and Diagnostics3.18  Hard Disk FormatLibretto 50CT/70CT Maintenance Manual3-373.18 Hard Disk FormatThis command executes hard disk formatting.  There are two types of hard-disk formatting:q Low-level (physical) formatting
q MS-DOS (logical) formatting
This hard disk format function performs a low-level format of the hard disk and executes the
following hard disk formats and check:1. All track FORMAT
2. Good track FORMAT
3. Bad track FORMAT
4. Bad track CHECK
NOTE:  The contents of the hard disk...

3.18  Hard Disk Format3 Tests and Diagnostics3-38Libretto 50CT/70CT Maintenance ManualRecording method8-9 RLL2. Good track FORMAT
This option formats a specified cylinder and track as a good track.  If a good track is
formatted as a bad track, use this option to change the track to a good track.
3. Bad track FORMAT
This option formats a specified cylinder and track as a bad track.  If a bad track is
detected, use this option to label it as a bad track.
4. Bad track CHECK
This option searches the hard...

3 Tests and Diagnostics3.18  Hard Disk FormatLibretto 50CT/70CT Maintenance Manual3-39The following selections also display at the bottom of the screen, in succession:
Drive number select (1:#1,2:#2) ?
(a) Select a drive number and press Enter.  The following message displays:
Interleave number (1/1 ~ 8) ?
(b) Select an interleave number, 1 ~ 8 and press Enter.  Pressing only Enter
selects 1.(c) Bad track register
Next, the Bad Track register prompt displays as shown below.  Enter the
cylinder and head...

3.18  Hard Disk Format3 Tests and Diagnostics3-40Libretto 50CT/70CT Maintenance Manual2. Good track FORMAT
If a good track has been erroneously formatted as a bad track, you can use this subtest
to reformat the track as a good track.  To format a track as a good track, enter the
number for drive, interleave, cylinder, and head as indicated in the screen prompt
shown below.
Drive number select (1:#1, 2:#2) ?
Interleave number (1 / 1 - 8) ?
Press [Cylinder number (dddd)] ?
Press [Head number (dd)] ?
Press...

3 Tests and Diagnostics3.19  Head CleaningLibretto 50CT/70CT Maintenance Manual3-413.19 Head Cleaning
3.19.1 Function DescriptionThis function cleans the heads in the FDD by executing a series of head load/seek and read
operations.  A cleaning kit is necessary to perform this program.3.19.2 Operations
1. Select 4 from the Diagnostic Menu and press Enter to display the following messages:
DIAGNOSTICS - FLOPPY DISK HEAD CLEANING : VX.XX
Mount cleaning disk(s) on drive(s).
Press any key when ready.
2....

3.20  Log Utilities3 Tests and Diagnostics3-42Libretto 50CT/70CT Maintenance Manual3.20 Log Utilities
3.20.1 Function DescriptionThis function logs error information generated while a test is in progress and stores the
results in RAM.  This function can store data on a floppy disk or output the data to a printer.
If the power switch is turned off, the error information will be lost.  The error information
displays in the following order:1. Error count (CNT)
2. Test name (TS-NAME)
3. Subtest number...

3 Tests and Diagnostics3.20  Log UtilitiesLibretto 50CT/70CT Maintenance Manual3-432. The error information displayed on the screen can be manipulated by the following
number keys:
The 1 key scrolls the display to the next page.
The 
2 key scrolls the display to the previous page.
The 
3 key returns to the Diagnostic Menu.
The 
4 key erases all error log information in RAM.
The 
5 key outputs the error log information to a printer.
The 
6 key reads the log information from a floppy disk.
The 
7 key...

3.21  Running Test3 Tests and Diagnostics3-44Libretto 50CT/70CT Maintenance Manual3.21 Running Test
3.21.1 Function DescriptionThis function automatically executes the following tests in sequence:1System test (subtest number 01)
2Memory test (subtest number 01, 02, 04, 06)
3Display test (subtest number 01 to 08)
4FDD test (subtest number 02)
5HDD test (subtest number 01, 05)
6Real timer test (subtest number 02)
7Printer test (subtest number 03) if selected
8Async test (subtest number 01) if selected
The...

3 Tests and Diagnostics3.22  Floppy Disk Drive UtilitiesLibretto 50CT/70CT Maintenance Manual3-453.22 Floppy Disk Drive Utilities
3.22.1 Function DescriptionThis function formats the FDD, copies the floppy disk, and displays the dump list for both
the FDD and HDD.1. FORMAT
NOTE:  This program is only for testing a floppy disk drive.  The option isdifferent from the Toshiba MS-DOS FORMAT command.(a) This program can format a 5.25-inch or 3.5-inch floppy disk in the following
formats:
2DD:  Double-sided,...