Toshiba T-Series T1000SE User manual

File No. 960-017
1.1 GENERAL
The Toshiba T1000SE is one of the lightest portable
computers available offering high technology, high speed,
excellent legibility, IBM PC XT compatibility and battery
machine.
The T1000SE is so small it defines a new class of portables
called notebook computers.
The T1000SE's operating system is used the MS-DOS version
3.30 and a powerful 80C86-2 microprocessor which has 16-bit
data width on the data bus line. The memory capacity is one
Mbyte as standard. The system can be added 1- or 2-Mbyte
memory card, thus the system can be had up to 3 Mbytes of
RAM. The T1000SE stores version 3.30 of the MS-DOS
operating system and related programs in read only memory
(ROM). The internal 3.5-inch floppy disk drive (FDD)
supports 1.44-Mbyte double-sided, high-density, double-track
(2HD) and 720-Kbyte double-sided, double-density, double-
track (2DD) disks. The keyboard is compatible with IBM
enhanced keyboard which has 82 or 84 keys. A backlit liquid
crystal display (LCD) comes with your T1000SE. The screen
supports 640 by 400 pixels with color/graphics adapter (CGA)
compatible graphics and two color attribute combinations.
The power supply system is composed of AC adapter and
batteries.
The T1000SE provides connecting ports with the optional
devices at the rear panel of the system. There are one
parallel port, one serial port, and the expansion bus
connector.
Figure 1-1 T1000SE system unit
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File No. 960-017
1.2 SYSTEM UNIT
Figure 1-2 shows the T1000SE's system block diagram.
CPU
Intelligent
---
Standard 80C86-2
power supply
memory
-
ACadapter
-<AC
1MB
IDC
r--------~
: Optional :-
r-
: memory :-
Bus driver
L ________ .J G.A.
VO
-0 Parallel port
I EMCG.A. I -
controller
G.A.
Backup
r-
RAM
32KB
RTC
-TC8S21
3.5·
720KB/1.44MB SI
FDD
'-
82C37
Bus
~
Speaker
82CS9
controller G.A.
82CS3
COMMSD-
FOC
I
UART
1
KBC
~d
80C49
VFO
I--
Display controller
I---
LCD
G.A. (640X400)
BIOS ROM
~
32KB I I
DOS-ROM Video
CG-ROM
S12KB
RAM 128KB
32KB
I Expansion
~
bus connector
Figure 1-2 Block diagram
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File No. 960-017
The T1000SE has a system board in the system. The system
board is composed of the following components
System board
* Central processing unit: CPU (80C86-2)
The CPU is a 16-bit microprocessor operated at
9.54MHz or 4.77MHz clock speed.
* Super Integration : SI (T9776)
The SI is stored the following components :
Direct Memory Access controller : DMAC (82C37)
Programmable interrupt controller: PIC
(82C59)
Programable interval timer : PIT (82C53)
Floppy disk controller : (TC8565)
Universal asynchronus receiver transmitter : UART
(TC8570)
* Variable frequency oscillator : VFO (TC8568)
The VFO chip is used for FDD control logic.
* Real time clock : RTC (TC8521AM)
The RTC has memory in this chip which keeps the
date, time and system configuration by RTC
battery.
* Keyboard controller : KBC (80C49)
* Memories
Standard RAM : 1 Mbyte
Backup RAM : 32 Kbytes
BIOS ROM : 32 Kbytes
Video RAM : 32 Kbytes
CG-ROM : 128 Kbytes
DOS-ROM : 512 Kbytes
* Gate arrays :
Bus controller gate array : BUSC-GA (100 pin)
Bus driver gate array : BUSD-GA (100 pin)
I/O controller gate array : I/O CONT-GA (100 pin)
Plasma/LCD controller 2 gate array : PLC2-GA (100
pin)
Expanded memory controller gate array : EMC-GA (100
pin)
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File No. 960-017
1.3 3.S-INCH FLOPPY DISK DRIVE
The 3.5-inch internal floppy disk drive (FDD) is a high
performance, reliable, and thin drive that supports 720-
kbyte (formatted) 200 and 1.44-Mbyte (formatted) 3.5-inch
floppy disk. The FDD is shown in figure 1-3 and its
specifications are described in table 1-1.
Figure 1-3 3.5-inch FDD
Table 1-1 3.5-inch FDD specifications
I Item Specifications I
I
-""'2--.."...,Mb::--y"""'"t-e---"-m....;;o....;;d:-e-;I---=1---='Mb~y-:-t....;;e'--m-o-d;--e I
I
Storage capacity (Kbytes) I I
I
Unformatted 2,000 I 1,000 I
I~F~o~r~m~a~t~t~e~d~~~ ____________ ~'-- __ ....;;1~,_4~4~0r- ____ ~1 ____ 7_2~0~-- ___ 1
I~N~u_mb~e_r'--o~f~h....;;e~a~d....;;s-:- ____________ ~ ______ ~2 ______ ~1 ____ ~2~-- ___1
I~N~u~mb~e~r~o~f~c~y~1~i~n~d~e~r~s~~ ______ ~ ______ ~8~0'-- ____ ~1 _____ 8~0'-- _____ 1
IAccess time (ms) I I
I 1
track access 3 I 3 I
I
Average 94 I 94 I
I~H~e~a~d~s~e~t~t~1~i~n~g~t~i~m~e'-- ________ ~ ____ ~~1~5r- ____ ~1 __ ~~1~5~ _____ 1
IRecording density 135 I 135 I
1=(~b~i~t~p~e....;;r~i~n~c~h~) __ ~ __________ ~~ ____ ~~ ____ ~1 __ ~~~ _____ I
IData transfer rate 500 I 250 I
1=(_K~b&y~t_e~s~p....;;e_r~s....;;e....;;c~o_n....;;d~) ________ ~~ ____ ~~ ____ ~I __ ~~~ _____ I
IRotational speed 300 I 300 I
I=(~r~e~v~o~l~u~t_i~o~n~s~p....;;e~r:--m~i~n~u~t_e~) ____ ~~ __ ~~~ __ ~~I-.~ ______ ~I
IRecording method MFM (modified frequency I
1
____________________________ ~'-- ___ m_o~d~u~1_a_t_1_·o_n~)~ ____________ 1
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File No. 960-017
1 .4 KEYBOARD
The 82 or 84-keyboard is mounted on the system unit. The
82-key is for USA version and 84-key is for European
version.
The keyboard is connected to the keyboard controller on the
system board through a 20-pin flat cable. The keyboard
layout of the U.K. version is shown in figure 1-4.
The optional keyboards are illustrated in appendix E.
Figure 1-4 Keyboard
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File No. 960-017
1.5 BACKLIT LIQUID CRYSTAL DISPLAY
The backlit liquid crystal display (LCD) is composed of a
LCD module and electroluminescence (EL) panel. The backlit
LCD is an LCD illuminated from the rear. Thus, you can read
its clear display even in poor light condition. It receives
4-bit vertical and 4-bit horizontal synchronizing signals,
and shift clock for data transmission. All signals are TTL
level compatible. The specifications are described in table
1-2.
The backlit LCD has two color attribute combinations and the
display quality can be adjusted by contrast and brightness
controls.
The backlit LCD is shown in figure 1-5.
Figure 1-5 Backlit LCD
Table 1-2 Backlit LCD specifications
Item
Specifications
Number of dots (dots)
640 X 400
Dot dimension
(mm)
0.27 (W) X 0.27 (H)
Dot pitch (mm)
0.30 (W) X 0.30 (H)
Display area (mm)
200.0(W) X 128.0(H)
Contrast
Approx.l : 4
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File No. 960-017
2.1 GENERAL
The problem isolation procedures described in part 2 are
used to isolate defective field replaceable units (FRUs).
The FRUs covered are:
1. Power supply unit
2. System board
3. FDD
4. Keyboard
5. Display
Detailed replacement procedures instructions are described
in part 4 and test program operations are described in part
3.
The following items are necessary for implementing the
problem isolation procedures.
1. TI000SE diagnostics disk
2. Phillips head screwdriver
3. Work disk (for FDD testing)
4. Cleaning disk kit (for FDD testing)
5. Printer port LED
6. RS-232-C, printer wraparound connectors
The problem isolation flowchart described in section 2.2 can
be used to determine which isolation procedures are
necessary to isolate a TI000SE problem.
2.2 PROBLEM ISOLATION FLOWCHART
The flowchart in figure 2-1 is used as a guide for
determining which FRU is defective. Please confirm the
followings before performing the flowchart procedures.
1. No disk is in the FDD.
2. All optional equipments are disconnected.
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File No. 960-017
START
Wait 5 seco1Lds or more .
\'
<:Does the Power indicator
come on when the power is
turned on?
Yes
\!I
Does
an error
message
displayed ?
i
Does the "MEMORY TEST
XXXXKB" message display ?
Yes
Does the "MEMORY TEST
XXXXKB" message proceed
from 64KB to 640KB ?
Yes
Is the C> display on the
screen ?
NO ........
Perform power supply
./
problem isolation
procedure in part
2.3.
yes ........
Perform system I
./
board problem
isolation procedure,
in Qart 2.4.
No Perform display
r--------~> problem isolation
procedures in part
2.8.
N
o
1L' -"p,,-,e,-r~f .......... o_r_m __ s_y_s_t_e __ m __ b_o_a_r_d~
problem isolation
procedure in part
2 • 4 •
No I
Perform system boar1:
problem isolation
procedure in part
2.6.
Figure 2-1 Problem isolation flowchart
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File No. 960-017
1
\/
Can you type any character No
Perform keyboard
correctly
? "'- problem isolation
....
procedures in part
2.7.
Yes
\/
Insert the diagnostics disk
into the FDD, then type
~:testcels and Enter.
~
Are test and diagnostic No
Perform FDD problem
program being loaded ? , isolation procedures
..-
(See PART 3)
in part 2.5.
Yes
\ I
lPerform
the each
test .1
i
Is
an error detected in
\
Yes,
After confirming
the diagnostics program ? -- which diagnostic
test detected an
No error. Perform the
relevant problem
isolation procedures
as
indicated next
page.
\/
I
System is
normal.J
END
If the diagnostics program cannot detect any error, it may
be an intermittent error. Running test is required to check
a computer for a while.
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File No. 960-017
1. If an error is detected on the system test, memory
test, display test, ASYNC test, printer test, or real
timer test, perform the system board isolation
procedures in section 2.4.
2. If an error is detected on the keyboard test, perform
the keyboard problem isolation procedures in section
2.6.
3. If an error is detected on the floppy disk test,
perform the FDD problem isolation procedures in section
2.5.
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File No. 960-017
2.3 POWER SUPPLY PROBLEM ISOLATION PROCEDURES
This section describes how to determine whether the power
supply is defective or not. Start with PROCEDURE 1 and
continue with other procedures as instructed. The procedures
described in this section are:
PROCEDURE 1 DC IN indicator check
PROCEDURE 2 Connector check
PROCEDURE 1
DC IN indicator check
This indicator lights red if power is supplied from AC
adapter when you connect the AC adapter to T1000SE and a
wall outlet. If the AC adapter's output voltage is abnormal,
the indicator labeled "DC IN" flashes red.
If the DC IN indicator flashes red or does not glow when
connecting the AC adapter to the computer, check the
following items.
Check 1
Check 2
Unplug the AC adapter from the wall outlet and the
computer. Plug the AC adapter into the computer,
then the wall outlet and power on the computer.
If still its phenomenon remains, perform the check
2.
The AC adapter may be damaged. Replace a new AC
adapter. If still its phenomenon remains, perform
the PROCEDURE 2.
PROCEDURE 2
Connector check
The battery cable is connected to the system board. The
cable may be disconnected from the PJ502 of the system
board. Disassemble the T1000SE system unit for checking the
cable. Disassemble procedures is described in part 4.
Check 1
Check that the following cable is connected to the
system board correctly.
o Battery connector --------------> PJ502
o Sub battery connector ----------> PJ503
If these cables are disconnected, connect them.
Try again the normal operation. If the phenomenon
remains, the system board may be damaged. Replace
the system board.
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File No. 960-017
2.4 SYSTEM BOARD PROBLEM ISOLATION PROCEDURES
This section describes how to determine whether the system
board is defective or not. Start with PROCEDURE 1 and
continue with other procedures as instructed. The
procedures described in this section are:
PROCEDURE 1: Message check
PROCEDURE 2: Printer port LED check
Test program check PROCEDURE 3:
PROCEDURE 1
Message check
After power on, the system performs initial reliability test
(IRT) which program is stored in BIOS ROM on the system
board. If the error message appears, perform the check 1. If
no displayed on the screen, perform the PROCEDURE 2
Check 1 If the following error message appears on the
screen, press any key. This program confirms the
current system configuration and the configuration
stored to RTC memory. If it is different, the
following message will appear. You can easily set
the current configuration in the RTC memory by
pressing any key. If another error message
appears, perform check 2.
***SYSTEM CONFIGURATION ERROR***
A checksum error occured in the configuration RAM.
Check 2
Check 3
Press any key for default set ....
If the following message appears, press any key.
At this time the resumed data will be erased. If
another error message appears, perform check 3.
WARNING: RESUME FAILURE.
PRESS
ANY KEY TO CONTINUE.
The IRT program tests the system board. If an
error occurs on the IRT program, the error message
appears on the screen. If the following error
message or none appears, perform PROCEDURE 3.
KEYBOARD ERROR
SYSTEM CONFIGURATION ERROR
xxxx MEMORY ERROR
FDD ERROR
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File No. 960-017
PROCEDURE 2
Printer port LED check
The printer port LED informs the IRT program status and
error status as a hexadecimal value after power on the
system. Connect the printer port LED to the printer port.
After power on, read the LED status from left to right.
If the final LED status is FEB, perform the PROCEDURE 3.
If the final LED status matches any of the error status code
in the table 2-1, replace the system board.
Table 2-1 Normal status and error status
of the printer port LED
Normal
status
AAH
PROCEDURE 3
Error
status
01H
06H
Test program check
Meaning
Display controller
initialization test
BIOS ROM checksum test
First 16KB RAM test
Process
HALT
HALT
The test program which is stored in T1000SE diagnostics disk
has several programs for testing the system board. Perform
the following test. Detail operation is described in part 3.
System test
Memory test
Display test
Printer test
ASYNC test
Real timer test
If an error is detected during the above tests, replace the
system board.
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File No. 960-017
2.5 FLOPPY DISK DRIVE PROBLEM ISOLATION PROCEDURES
This section describes how to determine whether the floppy
disk drive is defective or not. Start with PROCEDURE 1 and
continue with other procedures as instructed. The
procedures described in this section are:
PROCEDURE 1: Format check
PROCEDURE 2: Test program check
PROCEDURE 3: Connector check
PROCEDURE 1
Format check
Prepare the new floppy disk, the format it using MS-DOS
FORMAT command.
If the floppy disk is not formatted, check the following
items.
Check 1
Check 2
Check 3
Check that the FDD indicator lights. If it does
not light, perform the PROCEDURE 3. If it lights,
perform check 2.
Check that the MS-DOS FORMAT command is used
correctly.
When media type is 2DD, use the FORMAT/3 command.
When media type is 2HD, use the FORMAT command.
If FORMAT command is used correctly, perform the
check 3. If FORMAT command is not used correctly,
try again.
If still the phenomenon remains, perform the check
3.
Perform the head cleaning by cleaning kit of the
3.S-inch FDD. If still remains, perform the
PROCEDURE 2.
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File No. 960-017
PROCEDURE 2
Test program check
The FDD test program is stored the T1000SE diagnostics disk.
After run the MS-DOS, load the diagnostic program. Detail
operation is described in part 3.
Prepare the formatted floppy disk, then perform the FDD
test. The error code and status is described in table 2-2.
If the error occurs, perform the check 1.
Check 1
Check 2
Table 2-2 FDD error code and status
Code
Status
01H
Bad command
02H Address mark not found
03H Write protected
04H Record not found
06H
Media removed on dual attach card
08H
DMA overrun error
09H
DMA boundary error
10H CRC error
20H
FDC error
40H Seek error
60H
FDD not drive
80H
Time out error (Not ready)
EEH Write buffer error
If the "Write protected" message appeaDS, remove
the write protect by moving the write protect tab.
If the another error message appear, perform the
check 2.
Check that the floppy disk is formatted correctly.
If it is correctly, perform the PROCEDURE 3.
PROCEDURE 3
Connector check
The FDD is connected to the system board by one cable.
Disassemble the system unit for checking the FDD cable.
Detail procedures is described in part 4. If it is not
connected, connect it to the system board. If it is
connected to the system board correctly, performs check 1.
o FDD IfF connector ---------> PJ5
Check 1 The FDD may be damaged. Replace the FDD to a new
FDD, then check the PROCEDURE 1 and 2. If still
the error occurs, the system board (floppy disk
controller or other controller) may be defective.
Replace the system board.
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File No. 960-017
2.6 KEYBOARD PROBLEM ISOLATION PROCEDURES
This section describes how to determine whether the keyboard
is defective or not. Start with PROCEDURE 1 and continue
with other procedures as instructed. The procedures
described in this section are:
PROCEDURE 1: Test program check
PROCEDURE 2: Connector check
PROCEDURE 1
Test program check
The keyboard test program is stored in T1000SE diagnostics
disk. Perform the test program. Details operation is
described in part 3.
If the error occurs, perform the PROCEDURE 2. If the error
does not occur, the keyboard is normal.
PROCEDURE 2
Connector check
The keyboard is connected to the system board by one 22-pin
flat cable. Disassemble the system unit for checking the
keyboard cable. Detail procedures is described in part 4.
If it is not connected, connect it. If it is conRected
correctly, perform the check 1.
o Keyboard IfF connector --------> PJ8
Check 1
The keyboard may be damaged. Replace the keyboard
to a new one, then check the PROCEDURE 1. If
still error occurs, the keyboard controller on the
system board may be damaged. Replace the system
board.
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File No. 960-017
2.7 DISPLAY PROBLEM ISOLATION PROCEDURES
This section describes how to determine whether the DISPLAY
is defective or not. Start with PROCEDURE 1 and continue
with other procedures as instructed. The procedures
described in this section are:
PROCEDURE 1: Brightness and contrast volume check
PROCEDURE 2: Test program check
PROCEDURE 3: Connector check
PROCEDURE 4: Replacement check
PROCEDURE 1
Brightness and contrast volume check
The system has brightness and contrast dials on the left
side of the system unit. Using the two dials to fine tune
the display screen to your satisfaction. If the brightness
does not change, EL element may be run down. Replace the EL
panel. If the character light does not change, perform the
PROCEDURE 2.
If brightness and contrast of the display change, perform
the PROCEDURE 2.
PROCEDURE 2
Test program check
Using T1000SE diagnostics disk, perform the display test.
The display test checks the display controller on the system
board.
If the error is detected, perform the PROCEDURE 3. If the
error is not detected, the display is normal.
PROCEDURE 3
Connector check
The display unit has LCD module and EL panel. The LCD
module are connected to the LED board and a system board by
connector. Disassemble the display unit for checking these
connector. Detail procedures are described in part 4.
If these connectors are not connected, connect them. If
these connectors are connected, perform the PROCEDURE 4.
PROCEDURE 4
Replacement check
Replace the LED board, then perform the normal operation. If
still the phenomenon remains, replace the LCD module. If
still the phenomenon remains, system board may be damaged.
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File No. 960-017
(This page is intentionally blank.)
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File No. 960-017
3.1 GENERAL
This part explains test and diagnostics programs. That checks
the functions of all hardware modules of the T1000SE.
There are 14 programs grouped into two modules: the service
program module (DIAGNOSTICS MENU) and test program module
(DIAGNOSTIC TEST MENU) .
The service program module is composed of 5 tasks:
1. DIAGNOSTIC TEST
2. RUNNING TEST
3. LOG UTILITIES
4. HEAD CLEANING
5. SYSTEM CONFIGURATION
The test program module is composed of 9 tests:
1. SYSTEM TEST
2. MEMORY TEST
3. KEYBOARD TEST
4. DISPLAY TEST
5. FLOPPY DISK TEST
6. PRINTER TEST
7. ASYNC TEST
8. REAL TIMER TEST
9. EXPANSION TEST
The following items are necessary for carrying out the test and
diagnostic programs.
1. T1000SE diagnostics disk
2. Formatted work disk (For FDD test)
3. Cleaning disk kit (For head cleaning)
4. Printer wraparound connector
(For printer wraparound test)
5. RS-232-C wraparound connector
(For ASYNC wraparound test)
Service personnel can use these programs to isolate problems by
selecting the appropriate program and operation procedures
described in section 3.2.
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File No. 960-017
3.2 OPERATIONS
1. After run the MS-DOS, insert the diagnostics disk in the
floppy disk drive.
2. Type in A:TESTCE1S, then press Enter.
3. The following display will appear:
TOSHIBA personal computer T1000SE DIAGNOSTICS
Version X.XX (C) copyright TOSHIBA Corp. 1989
DIAGNOSTICS MENU
1-DIAGNOSTIC TEST
2-RUNNING TEST
3-LOG UTILITIES
4-HEAD CLEANING
5-
6-
7-
8-SYSTEM CONFIGURATION
9-EXIT TO MS-DOS
PRESS [1]-[9] KEY??
Detailed explanations of the service programs and the
operations are given in section 3.14 to 3.19.
NOTE: To stop the test programn while running the test
program, press Ctrl + Break
3-2