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710CDT/720CDT
Check 3
Check TSETUP to see whether the Hard Disk option is set to Not Used. If so,
choose another setting and repeat Check 1. If Not Used has not been selected, go to
Check 4.
Check 4
Using the Toshiba MS-DOS system disk, install a system program on the hard disk
using the SYS command.
If the following message appears on the display, the system program has been
transferred to the HDD:
System transferred
Restart the computer. If the error message still appears, perform Check 5.
Check 5
The HDD is connected to the flexible cable and the system board. The flexible
cable can become disconnected or damaged. Disassemble the computer as de-
scribed in
Chapter 4
,
Replacement Procedures
. If the HDD is not firmly con-
nected, connect it to the flexible cable and return to Procedure 1. If the HDD is
firmly connected to the system board, perform Check 6.
System Board
PJ602
Flexible Cable
HDD
HDD Connector
Check 6
The HDD connector may be defective or damaged. Replace the HDD connector
with a new one following the steps outlined in
Chapter 4
,
Replacement Proce-
dures
. If the HDD is still not functioning properly, perform Procedure 3.
Procedure 3
Format Check
The computer's HDD is formatted using the low level format program and the MS-DOS FOR-
MAT program. To format the HDD, start with Check 1 below and perform the other steps as
required.
Check 1
Using the Toshiba MS-DOS system disk, partition the hard disk using the FDISK
command. Format the hard disk using
FORMAT C:/S/U
to transfer the system
program to the HDD. If the following message appears on the display, the HDD is
formatted.
Format complete
If any other error message appears on the display, refer to the
Toshiba MS-DOS
Manual
for more information and perform Check 2.
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