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 +
Break
.Subtest 06“H” pattern display
This subtest displays a full screen of “H” patterns.
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
To exit this subtest and return to the DISPLAY TEST menu, press Ctrl +
Break
. 
						

							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 the directions on the screen.  The Floppy Disk test contains five subtests that test the
FDD.  To execute a test, enter an appropriate response to the messages that display after
selecting the Floppy Disk Test.1. Select the test drive number of the floppy disk drive to be tested and press Enter.
Test drive number select (1:FDD#1,2:FDD#2,0:FDD1&2) ?
2. Select the media type of the floppy disk in the test drive to be tested, and press Enter.
Media in drive #X mode (0:2DD,1:2D,2:2D-2HD/2DD,3:2HD) ?
If you enter 2 or 3, the following message will display:
2HD Media mode (1:1.20MB:21.44MB) ?
3. Select the track you want the test to start on and press Enter.  Simply pressing Enter
sets the start track to zero.
Test start track  (Enter:0/dd:00-79) ?
4. The floppy disk test menu displays after you select the start track number. Select the
number of the subtest you want to execute and press Enter. The following message
displays during the floppy disk test.
FDDXXXXXXX
SUB TEST:XX
PASS COUNT:XXXXXERROR COUNT:XXXXX
WRITE DATA:XXREAD DATA:XX
ADDRESS:XXXXXSTATUS:XX
SUB-TEST MENU:
01 - Sequential read
02 - Sequential read/write
03 - Random address/data
04 - Write specified address
05 - Read specified address
99 - Exit to DIAGNOSTIC TEST MENU
Exit to DIAGNOSTIC TEST MENU
­¯®¬:Select items
Enter:Specify
Esc:Exit 
						

							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), track number, and head number, the
test will automatically begin.
6. The following message displays during the FDD test.Subtest 01Sequential read
This subtest performs a Cyclic Redundancy Check (CRC), that continuously
reads all the tracks on a floppy disk.  The following tracks are read according
to the media type in the floppy disk drive:
Double-sided, double-density (2D): Tracks 0 to 39.
Double-sided, double-density, double-track (2DD) and double-sided,
high-density, double-track (2HD): Tracks 0 to 79.
The start track is specified when the FDD test is started from the Diagnostic
Test Menu.  Refer to step 3 at the beginning of this section to set the start
track.
Subtest 02Sequential read/write
This subtest continuously writes data pattern B5ADADh to all the specified
tracks selected in Subtest 01.  The data is then read and compared to the
original data. 
						

							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 = 0000h
channel#3 = 0000h
Select the channel number (1-3) ?
2. Enter the channel number for the printer port and press Enter. If you are running
Subtest 03, the test will automatically start when you press Enter. If you are running
Subtests 01, 02, or 04, the following message displays:
Select the printer mode ( 1:80/2:136 ) ?
3. Enter 1 or 2 to select the printer mode. That is, 1 for 80 characters per line or 2 for
136 characters. Press Enter and the following message displays:
Select the test mode ( 1:page / 2:all ) ?
If you select page, one page will be printed; if you select all, printing will be
continuous.
4. Enter 1 or 2 to select the printer output parameter, then press Enter. If you are
running Subtest 01 or 02, the test will automatically start after you press Enter.
Subtest 01Ripple pattern
This subtest prints characters for codes 20h through 7Eh line-by-line while
shifting one character to the left at the beginning of each new line. 
						

							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 (34M741986G01) wiring diagram is described in Appendix E.This subtest checks the output and bi-directional modes of the data control and
the status of lines through the printer wraparound connector. 
						

							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)
38400BPS (Subtests 05 to 07)
Data:8 bits and one parity bit (EVEN)
Data pattern:20h to 7Eh
The following message displays at the bottom of the screen when Subtests 01, 03, and 04 are
selected:Channel#1 = XXXXh
Channel#2 = XXXXh
Channel#3 = XXXXh
Select the Channel number (1/2/3)
The serial I/O port address is specified by the XXXXh number. Select the serial port channel
number, and press Enter
 to start the subtest.Subtest 01Wraparound (board)
NOTE: To execute this subtest a serial port wraparound connector(34M741621G01) must be connected to the serial port.  The serial portwraparound connector wiring diagram is described in Appendix E.This subtest checks the data send/receive function through the wraparound
connector.
Subtest 02Point to point (send)
NOTE: To execute this subtest, two machines must be connected with aserial port direct cable.  One machine should be set as “send”(Subtest 02)and the other set as “receive” (Subtest 03).  The wiring diagram for theserial port direct cable is described in Appendix E.This subtest sends 20h through 7Eh data to the receive side, then receives the
sent data and compares it to the original data. 
						

							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 mode
This subtest checks the data send function through the Infra_red port.
Subtest 07Infra_red receive mode
This subtest checks the data receive function through the Infra_red port. 
						

							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.  Before running the test, transfer the contents of the hard disk tofloppy 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.1. Select the hard disk drive number to be tested.
Test drive number #1
#2
#1
2. This message is used to select the retry operation when the hard disk controller detects
an error.  Select yes or no.
HDC F/W error retryyes
no
3. This message is used to select the error dump operation when a data compare error is
detected.  Select yes or no.
Data compare error dumpyes
no
4. This message is used to select whether or not the HDD status is displayed on the
screen.  The HDD status is described in Section 3.18.  Select yes or no.
Detail status displayyes
no
5. The Hard Disk Test message will display when you select the number of the subtest
you want to execute and press Enter.  The following message displays during each
subtest. 
						

							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 DIAGNOSTIC TEST MENU
­¯®¬:Select items
Enter:SpecifyEsc:Exit
6. Type the number of the subtest that you want to run and press Enter. The following
displays:
TEST LOOP : YES
ERROR STOP : YES
After you select TEST LOOP or ERROR STOP, the test will automatically start.
Subtest 01Sequential read
This subtest is a sequential reading of all the tracks on the HDD starting at
track 0.  When all the tracks on the HDD have been read, the test starts at the
maximum track and sequentially reads the tracks on the HDD back to track 0.
Subtest 02Address uniqueness
This subtest writes unique address data to each sector of the HDD track-by-
track.  The data written to each sector is then read and compared with the
original data.  There are three ways the HDD can be read:
· Forward sequential
· Reverse sequential
· Random