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
1-5

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.
2-4