Toshiba Libretto 50CT/70CT Manual

3.7  Display Test3  Tests and Diagnostics3-16Libretto 50CT/70CT Maintenance ManualPressing Enter changes the size of the displayed image.Pressing Enter
 changes the size of the displayed image.
To exit this subtest and return to the DISPLAY TEST menu, press Ctrl +
Break
.Subtest 05All dots on /off for LCD
This subtest displays an all-white screen (all dots on) for three seconds then an
all-black screen (all dots off) for three seconds.
To exit this subtest and return to the DISPLAY TEST menu, press Ctrl...

3  Tests and Diagnostics3.8  Floppy Disk TestLibretto 50CT/70CT Maintenance Manual3-173.8 Floppy Disk Test
NOTE: Before running the floppy disk test, prepare a formatted work disk.  Remove theDiagnostics Disk and insert a work disk into the FDD.  The contents of the floppy disk willbe erased. Use one of the following commands depending on the FDD capacity:FORMAT A:/F:7202DD(720 KB)FORMAT A:/F:1.442HD(1.44 MB)To execute the Floppy Disk Test select 5 from the Diagnostic Test Menu, press Enter and
follow...

3.8  Floppy Disk Test3  Tests and Diagnostics3-18Libretto 50CT/70CT Maintenance Manual5. When you type in the subtest number and press Enter, the Diagnostics Menu will
display (see Section 3.2), or an error message will display. Select subtest 01, 02, or 03
in step four above, and the diagnostic test will automatically begin. Select subtest 04
or 05 and the following lines will display, one after another:
Test data??(subtest 04 only)
Track No.
Head No.
After you enter the test data (subtest 04 only),...

3  Tests and Diagnostics3.8  Floppy Disk TestLibretto 50CT/70CT Maintenance Manual3-19Subtest 03Random address/data
This subtest writes random data to random addresses on all tracks defined in
Subtest 01.  The data is then read and compared to the original data.
Subtest 04Write specified address
This subtest writes specified data to a specified track, head, and address.
Subtest 05Read specified address
This subtest reads data from a specified track, head, and address. 

3.9  Printer Test3  Tests and Diagnostics3-20Libretto 50CT/70CT Maintenance Manual3.9 Printer TestTo execute the Printer Test select 6 from the Diagnostic Test Menu, press Enter and follow
the directions on the screen.  The Printer Test contains three subtests that test the output of
the printer connected to the computer.NOTE: An IBM compatible printer must be connected to the system to execute this test.1. The following message displays when the printer test is selected:
channel#1 = 0378h
channel#2 =...

3  Tests and Diagnostics3.9  Printer TestLibretto 50CT/70CT Maintenance Manual3-21Subtest 02Function
This subtest is for IBM compatible printers, and tests the following functions:
Normal print
Double-width print
Compressed print
Emphasized print
Double-strike print
All characters print
This subtest prints the various print types shown below:Subtest 03Wraparound
NOTE: To execute this subtest, a parallel port wraparound connectormust be connected to the printer port. The parallel port wraparoundconnector...

3.10  Async Test3  Tests and Diagnostics3-22Libretto 50CT/70CT Maintenance Manual3.10 Async TestTo execute the Async Test select 7 from the Diagnostic Test Menu, press Enter and follow
the directions displayed on the screen. The async test contains seven subtests that test the
asynchronous communication functions. Move the highlight bar to the subtest you want to
execute and press Enter
.
Subtests 01 through 07 require the following data format:
Method:Asynchronous
Speed:9600BPS (Subtests 01 to 04)...

3  Tests and Diagnostics3.10  Async TestLibretto 50CT/70CT Maintenance Manual3-23Subtest 03Point to point (receive)
This subtest is used with Subtest 02 described above.  This subtest receives the
data from the send side, then sends the received data.
Subtest 04Interrupt test
This subtest checks the Interrupt Request Level of IRQ 3, 4, and 5 from the
send side.
Subtest 05Infra_red wrap_around test
This subtest checks the data send/receive function through the Infra_red port.
Subtest 06Infra_red transmit...

3.11  Hard Disk Test3  Tests and Diagnostics3-24Libretto 50CT/70CT Maintenance Manual3.11 Hard Disk TestTo execute the Hard Disk Test select 8 from the Diagnostic Test Menu, press Enter, and
follow the directions on the screen.  The hard disk test contains ten subtests that test the hard
disk drive functions.  Answer each of the displayed questions with an appropriate response to
execute the test.NOTE: The contents of the hard disk will be erased when Subtest 02, 03, 04, 05, 06, 08,09, or 10 is executed....

3  Tests and Diagnostics3.11  Hard Disk TestLibretto 50CT/70CT Maintenance Manual3-25HARD DISK TEST     XXXXXXX
SUB-TEST : XX
PASS COUNT: XXXXX  ERROR COUNT: XXXXX
WRITE DATA: XX  READ DATA : XX
ADDRESS : XXXXXX STATUS  : XXX
SUB-TEST MENU :
01 - Sequential read
02 - Address uniqueness
03 - Random address/data
04 - Cross talk & peak shift
05 - Write/read/compare (CE)
06 - Write specified address
07 - Read specified address
08 - ECC circuit
09 - Sequential write
10 - W-R-C specified address
99 - Exit to...