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 status error occurs1TK00
“0” — The hard disk has found track 0 during a recalibrate
          command(Track 0)
“1” — The hard disk could not find track 0 during a recalibrate
          command0——Not used 
						

							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 will be erased when this program is executed.Before executing the function, transfer the contents of the hard disk onto floppy disk.Check to see if the Microsoft Create System Disks Tools (MSCSD.EXE) still exists in theSystem Tools Folder. (This tool can be used only once.) If it exists, use it to back up thepreinstalled software, then use the Backup utility in the System Tools folder to back up theentire disk, including the user’s files.Refer to the operating system instructions.3.18.1 Function Description
1. All track FORMAT
This option performs a low-level format of all the tracks on the hard disk as shown in
Table 3-5 below:
NOTE:  Before executing the all track format option, check for bad tracks usingthe Bad Track CHECK option or display a list of bad tracks on the HDD.Table 3-5  Hard disk formatting sequenceItems(MT800)Storage capacity815Heads2Bytes per sector512Rotation speed (rpm)4,000 
						

							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 disk for bad tracks by reading data to all the tracks on
the hard disk.  A list of bad tracks is displayed when the program is complete.  If an
error other than a bad track is detected, the program is automatically terminated.
3.18.2 Operations
NOTE:  After the HDD has been formatted, execute the Toshiba MS-DOS FDISKcommand, to partition the HDD.  Next, execute the Toshiba MS-DOS FORMATcommand.  Refer to the Toshiba MS-DOS manual for more information about using thesecommands.Select 2 and press Enter on the Diagnostic Menu, to display the following messages:DIAGNOSTICS - HARD DISK FORMAT : VX.XX
1 - All track FORMAT
2 - Good track FORMAT
3 - Bad track FORMAT
4 - Bad track CHECK
9 - Go to TEST MENU
­¯®¬: Select items, Enter: Finish, Esc: Exit
1. All track FORMAT
Press 1 to select All track FORMAT, which lets you format the entire disk.
[All track FORMAT]
Drive:#1 = HDD#2 = Non
Cylinder:XXXX
Head:XX
Sector:XX
> 
						

							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 numbers of bad tracks and press Enter.  Note that if there
are no bad tracks, pressing Enter alone is the same as executing All Track
Format described in item (d) below.
[ WARNING : Current DISK data will be
completely destroyed ]
Press Bad cylinder number (dddd)] key ?
Press Bad head number (dd)] key ?
Enter the cylinder and head number in the format above by decimal notation.
Repeat for each bad track you want to format.
After entering the bad tracks, press Enter
 to execute the format.
(d) All track format
All tracks are formatted as good tracks except those registered as bad tracks in
item (c) above or those identified as bad tracks in track verification described
in item (e) below.
(e) Track verification
A check is made of all tracks and if an ECC error, ECC correctable data error
or record-not-found error is detected at a track, that track is automatically
formatted as a bad track. 
						

							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 Enter
 to return to the Hard Disk Format menu.
3. Bad track FORMAT
To format a track as a bad 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 Enter
 to return to the Hard Disk Format menu.
4. Bad track CHECK
This subtest reads the entire disk and displays a list of bad tracks.  The test is
terminated in case of a bad track check error.  To initiate the subtest enter the drive
number at the prompt shown below.
Drive number select (1:#1, 2:#2) ?
Bad tracks will display in the format shown below.
[[cylinder, head = 0123 03]]
Press Enter
 to return to the Hard Disk Format menu. 
						

							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. Remove the Diagnostics Disk from the FDD, insert the cleaning disk, and press Enter.
3. When the “cleaning start” message displays, the FDD head cleaning has begun.
4. The display automatically returns to the Diagnostic Menu when the program is
completed. 
						

							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 (TS-NAME)
4. Pass count (PASS)
5. Error status (STS)
6. FDD/HDD or memory address (ADDR)
7. Write data (WD)
8. Read data (RD)
9. HDC status (HSTS)
10. Error status name (STATUS NAME)
3.20.2 Operations
1. Select 5
 and press Enter on the Diagnostic Menu to log error information into RAM
or onto a floppy disk.  The error information displays in the following format: 
						

							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 writes the log information to a floppy disk.
3. In the case of “error retry OK,” a capital “R” will be placed at the beginning of the
error status.  However, it is not added to the error count. 
						

							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 system automatically detects the number of floppy disk drives connected to the
computer for the FDD test.3.21.2 Operations
NOTE:  Do not forget to load a work disk in the FDD.  If a work disk is not loaded, anerror will be generated during the FDD test.1. Remove the diagnostics disk from the floppy disk drive and insert the work disk.
2. Select 6 from the Diagnostic Menu and press Enter, the following message displays:
Printer wrap around test (Y/N) ?
Select Y (yes) to execute the printer wraparound test.  A printer wraparound
connector must be connected to the parallel port of the computer to properly execute
this test.
3. Select Y or N and press Enter.  The following message displays:
Serial #A wrap around test (Y/N) ?
Select Y (yes) to execute the ASYNC wraparound test.  An RS-232C wraparound
connector must be connected to the serial port of the computer to properly execute
this test.
4. Select Yes or No and press Enter.  The following message displays:
Mount the work disk(s) on the drive(s),
then press [Enter] key.
[Warning : The contents of the disk(s),
will be destroyed.]
5. This program is executed continuously.  To terminate the program, press Ctrl +
Break. 
						

							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, double-density, double-track, 96/135 TPI, MFM mode,
512 bytes, 9 sectors/track.
(b) 2HD:  Double-sided, high-density, double-track, 96/135 TPI, MFM mode, 512
bytes, 18 sectors/track.
2. COPY
This program copies data from a source floppy disk to a target floppy disk.
3. DUMP
This program displays the contents of the floppy disk and the designated sectors of the
hard disk on the display.
3.22.2 Operations
1. Select 7 from the DIAGNOSTIC MENU and press Enter to display the following
message:
[ FDD UTILITIES ]
1 - FORMAT
2 - COPY
3 - DUMP
9 - EXIT TO DIAGNOSTICS MENU
2. FORMAT program
(a) Select FORMAT to display the following message: