Philips PCL304 User manual

Notebook
personal
computer
PCL304
00/02/05 6/19
Service
ervice
Service
Personal
Information
Products
-
Service
Quality
Support
PCL
304
is
a
small
size,
high
performance
notebook
computer
using
the
newest
technology.
It
is
a
80C386
based
PC/SX
with
a
high
contrast
VGA
LCD
display,
a
high
speed
40
MB
harddisk
and
a
floppy
diskette
dive:
for
1.44
MB
or
720
KB
diskette.
An
AC
adapter
is
supplied
which
both
powers
the
system
and
also
recharges
the
internal
NiCad
battery,
The
system
typically
offers
2
hours
of
battery
operations
and
is
designed
for
professionals
who
travel
fre-
quently
yet
require
a
high
performance
PC/SX.
Published
by
Consumer
Electronics
Printed
in
The
Netherlands
©Copyright
reserved
Subject
to
modification
4822
727
18379
acer
enna
LL
LL
TST
CS 55 788

Safety Precaution
There are special components used in the computer which
are important for safety. These parts are shaded on the
schematic diagram and indicated by a safety mark | On the
replacement parts list, It is essential that these critical parts
should be replaced with the manufacturer's specified parts
to prevent shock, fire or other hazards. Do not modify the ori-
ginal design without written permission of the manufacturer
or this will void the original parts and labor guarantee.
Acknowledgements
The following trademarks are the respective properties of the following trade-
mark holders:
IBM, VGA, EGA, CGA, MDA, PC-DOS, PS/2, PC/AT, PC/XT
Registered trademarks of International Business Machines Corporation
Microsoft, MS-DOS, XENIX, MS-OS/2, Windows
Registered trademarks of Mocrosoft Corporation
Hercules
Registered trademarks of Hercules Computer Technology
Centronics
Registered trademarks of.Centronics Corporation
Phoenix
Registered trademarks of Phoenix Technology Ltd.
Lotus and Lotus 1-2-3 °
Registered trademarks of Lotus Development Company
Intel, 80386, 80286, 80287
Registered trademarks of Intel Corporation
"PHILIPS CONSUMER ELECTRONICS
Personal Information Products-Service Quality Support
CS 55 789

TABLE OF CONTENTS
1. SYSTEM UNIT
4.1. Technical specifications
page
1-1
1.2.
Description
of
controls
and
terminal
sockets1-2
1.3. Input/output specification
2. GENERAL SYSTEM DESCRIPTION
2.1 Introduction
2.2. Main board
2.2.1 Processor
2.2.2 Memory
2.2.3 RAM
2.2.4 ROM
2.2.55 /O connections
2.2.6 Serial & parallel port assignments
2.2.7 Video graphics adapter
2.2.8 Video BIOS ROM
2.3 Power supply
2.3.1 Power low indicator
2.3.2 Recharging a battery
2.3.3 Power conservation
2.3.4 Standby mode
2.4 Keyboard
2.5 Video
2.6 Hard disk drive
2.6.1 Conner CP4044
2.7.‘ Floppy disk drive
2.7.1. Sony MPE-220
3 CONFIGURATIONS
3.1 System upgrades
3.2 System memory configurations
3.2.1 Expanded memory
3.2.2 Address map
4. SYSTEM UTILITY
4.1 Setup
4.1.1 Setup page
1-4
2-1
2-2
2-2
2-3
2-4
2-5
2-5
2-5
2-5
2-6
2-6
2-7
2-8
2-8
2-8
2-8
2-8
3-1
3-1
3-2
4-1
4-2
5. SYSTEM UNIT ASSEMBLY/DISASSEMBLY
5.1. Assembly/Disassembly
5.1.1 Top cover removal
5.1.2 Keyboard removal
5.1.3 Power board removal
5.1.4 Mother board removal
5.1.5 Floppy disk drive removal
5.1.6 Hard disk removal
5.2 Mechanical
5.2.1 Parts list cabinet
5.2.2 Exploded view
5.3. Interconnections
5.3.1 Wiring diagram
5-1
5-2
5-3
5-4
5-4
5-4
5-6
5-7
5-8
6.1
6.2
6.2.1
6.2.2
6.3
6.4
6.4.1
6.4.2
6.4.3
6.4.4
6.4.5
6.4.6
6.4.7
6.5
6.6
7.1
7.2
8.1
8.1.1
8.1.2
8.1.3
8.1.4
8.1.6.
8.1.7.
8.2
8.2.1
8.2.2
8.2.3
15-07-1991
DIAGNOSTICS
Functional testprogram
Error messages
Power On Test messages
User diagnostic messages
Outline diagnostic test
Diagnostic description
Main board
RAM diagnostics
Keyboard diagnostics
Video diagnostics
Floppy disk diagnostics
Serial port diagnostics
Printer port diagnostics
Power on selftest error codes
Tools and test equipment
VOLTAGE ADAPTER
Specifications
Parts list
CIRCUIT BOARD ASSEMBLIES (CBA)
Main board
Main board assembly
Connector pin assignment
Block diagram
CBA component layout
1. Topside
2. Bottom side
Circuit diagrams
1. AT control section
2. Processor section
3. Keyboard interface
4. . Clock & Buffer section
5. BIOS module connector
6. Memory slot circuitry
7. Supply connector
8. Keyboard controller & interface
9. VGAcontroller
10. Video DRAM circuitry
11. Buffer section
12. CRT interface & LCD connection
13. Serial & parallel interface
14. FDD & HDD circuitry
15. Connector circuitry
16. Expansion circuitry
17. VGA interface circuitry
Parts list
Troubleshoot flow chart
Power board
Power supply assembly
Connector pin assignment
Block diagram
page
6-1
6-2
6-3
6-4
6-4
6-5
6-5
6-5
6-5
6-5
6-6
6-6
8-9
8-10
8-14
8-12
8-13
8-14
8-15
8-16
8-17
8-18
8-19
8-20
8-21
8-22
8-23
8-24
8-25
8-26
8-28
8-31
8-31
8-32
CS 55 790

8.2.4
8.2.5
8.2.6
8.2.7
8.3
8.3.1
8.3.2
8.3.3
8.3.4
8.3.5
8.3.6
9
9.1
9.1.1
9.1.2
9.1.3
9.2
9.2.1
9.2.2
9.2.3
9.3
9.3.1
9.3.2
9.3.3
9.4
10
10.1 -
CBA component layout
1. Top side
2. Bottom side
Circuit diagrams
1. Power management
2. Drive circuitry
3. Stabilizer circuitry
Parts list
Troubleshoot flow chart
Keyboard
Keyboard assembly
Scan code
Connector pin assignment
CBA component layout
1. Top side
2. Bottom side
Circuit diagram
Parts list
DEVICES
Hard disk drive
PCL304 HDD assembly specification
Pin assignment
Installing instructions
Floppy disk drive
FDD assembly specification
Pin asignment
Installing instructions
LCD assembly
Specifications
Theory of the LCD operation
Pin asignment
Battery pack
MODIFICATION
General information.
CS 55 791
8-45
8-47
8-48
9-6
10-1

1 SYSTEM UNIT
1.1 Technical specifications
General.
Adapter:
Mains voltage
Mains frequency
Max output power
System:
Ambient temperature :
Relative humidity
Altitude
Weight
Dimensions
LCD:
Type
Dot pixels
Dot size
Dot pitch
Display area
Display mode
Charater mode
Graphics mode
90-270 V (Universal)
48-63 Hz
22 Watt (Cont)
+5 to +35C
20% to 80%
8.000 ft.
3.03 kg
280x220x50 mm (WxDxH)
VGA B/W LCD with backlight
640 x 480
0.24 x 0.24 mm
0.27 mm
180 x 1383 mm (WxH)
VGA mode (CGA/EGA/MDA emul)
80 columns x 25/43 lines
40 columns x 25/43 lines
640 x 480 dots
Specification
Processor
Coprocessor
Clock Speed
Extended Memory
Display
Sound
Floppy Disk Drive
Hard Disk
Keyboard
External Key
PS/2 Mouse Port
Serial Port
Parallel Port
Video Port
Internal Modem port
External Floppy
Expansion Bus
AC Power
Main Battery
80386SX 16MHz
80387SX (option)
16 MHz or 8 MHz, sOftware se-
lectable
3 MB, 5 MB
640x480 pixels LCD panel,
IBM VGA compatible
Buzzer
3.5", 1.44 MB, double side,
high density floppy disk drive
3.5", 42.9 MB hard disk with 29
ms average access time.
79/80 keys, 101/102-key key-
board compatible
Numeric Keypad or IBM com-
patible keyboard, 6-pin female
mini DIN connector
PS/2 Mouse, 6-pinfemale mini
DIN connector
1 asynchronous serial RS-
232C port,,9-pin male D-sub
connector
Centronics-type parallel port,
25-pin female D-sub connector
15-pin female D-sub connector
for external monitor; IBM VGA
compatible
20-pin male connector for inter-
nal 2400 bps modem (option).
External Floppy Disk Drive
port, Disk Drive 25-pin female
D-subconnector.
Provides a 16-bit interface to
the Notebook system, 96-pin
male D-sub connector
90V-270V full range adapter
4.8V, 5.0Ahr NiCd battery pack
with over-charge protection
CS 55 792

1-2
1.2
Description
of
controls
and
terminal
sockets
Right side panel
Screen latch right
Diskette slot
Eject button
External keyboard connector
Mouse connector
Power switch
onrRwoN +
12 3 45 #6
MDA.02790
728/034
Left side panei
7. Battery compartiment
8. External Video connector
9. Screen latch left
MDA.0279
7 8 9 728/034 ‘
CS 55 793

Rear panel
10.
11.
12.
13.
14.
Battery-charger connector
External diskdrive connector (D-Shell)
Parallel port Centronics (D-Shell)
Serial port RS-232 (D-Shell)
Expansion connector
10 11 42° 43 14 Bion
Inside the Notebook
15. 80 key keyboard
16. Cover memory expansion
17. Harddisk activity LED
18. Floppy activity LED
19. Power on indicator
20. Stand-by / Charge LED
21. Stand-by / cover switch
22. VGALCD display
H
i
¢
yh
i
V\/
Mi
Wi
[[K
i
Wh
iN
\
_
on
—
o>
—
7 18 19 20 21 22 Wana
CS 55 794

1-4
1.3 Input/ouput specification
External keyboard connector (4):
Pin Description
Data
Ne
Ground
+5V DC
Clock
Ne OrNpRwonN>
Mouse connector (5):
Pin Description
Data
Nc
Ground
+5V DC
Clock
Ne
earons
Video connector (8):
Pin Description
1. Red
2. Green
3. Blue
4. Ne
5. Analogue ground
6. Analogue ground
7. Analogue ground
8. Analogue ground
9. Ne
10. Analogue ground
11. Nc
12. Ne
13. Horizontal sync.
14. Vertical sync.
15. Ne
External! diskdrive connector (11):
a
in Description
Ground
Index*
Track 0*
Write Protect*
Read Data*
Disk Change*
+5V DC
+5V DC
+5V DC
10. Drive Select*
11. Motor On*
12. Write Data*
13. Write Enable*
14. Reduce Write Curr.*
ON PAPwONM
so
15. Head Select*
16. Direction”
17. Step*
18-25 GND
CS 55 795
DATA
VIDEO CONNECTOR
CLOCK
GND
MDA.0!669
T19/019
MDA.02668
719/019

Parallel port (12):
Pin Description
1. Strobe"
2. Data 0
3. Data 1
4. Data 2
5. Data 3
6. Data 4
7. Data5
8. Data 6
9. Data 7
10. Ack*
11. Busy
12. Paper end
13. Select
14. Auto finefeed*
15. Error*
16. Initialize*
17. Select in*
18-25 GND
* Active low
Serial port RS-232C (13):
Pin
OONoOarAwWN =
Description
CD (carrier detected)
RXD (received data)
TXD (transmitted data)
DTR (data terminal ready)
GND
DSR (data set ready)
RTS (request to send)
" CTS (clear to send)
RI (ring indicator)
Supply connector (10):
Pin
1.
2.
3
Description
Va (5.6V DC +3/-6%
Vb (6.1V DC +/- 5%
POK (7.15V DC - 7.65V DC 0A - 50 mA)
Outer shield = Ground
PARALLEL CENTRONICS
SERIAL
CENTRONICS
45 711 At&
MDA.02668
719/019
CS 55 796

1-6
EXPANSION BUS CONNECTOR
Expansion Bus connector (14):
GND
RESETDRV
+ 5V
IRQ9
N.C.
DREQ2
+ 5V
OWS *
+5V
10. GND
11. SMEMW **
12. SMEMR *
18. 1OW*
14. IOR*
15. DACK3*
16. DREQ3
17. DACKi1 *
18. DREQ1
19. RFF*
20. BSYSCLK
21. IRQ7
22. IRQ6
23. IRQS
24. IRQ4
25. IRQ3
26. DACK2
27. TC
28. BALE
29. +5V
30. DOSC
31. GND
32. IOCHECK *
OONOARwON >
* — Active "low"
** — aActive "high"
CS 55 797
33.
34.
35.
36.
37.
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SDO
BIOCH
AEN
SAi9
SA18
SA1i7
SA16
SA15
SA14
SA13
SAi2
SA11
SA10
SA9
SA8
SA7
SA6
SAS
SA4
SA3
SA2
SAI
SAO
MEMCS16*
]OCS *
IRQ10
{RQ11
IRQ12
IRQ15
. IRQ14
. DACKO*
. DREQO
. DACKS5*
. DREQS
. DACK6 *
. DREQE6
. DACK7*
. DREQ7
. MASTER™*
. SBHE*
. LA23
. LA22
LA21
LA20
LA19
LA18
. LA17
MEMR *
. MEMW*
. SDB
. SD9
. SD10
SD11
$D12
$Di3
SD14
. SD15
4B AVMQ AtwD

2.
GENERAL
SYSTEM
DESCRIPTION
2.1 Introduction
The
system
features
a
16
Mhz
80C386
based
PC/AT
com-
patible
main
board
placed
in
a
high
performance
small
size
laptop
chassis.
The basic system includes:
+ + £ © ££ & £
Main board assembly,.
Power board assembly,
Keyboard assembly,
Floppy disk drive,
Hard disk drive,
LCD assembly,
Main battery
Adapter.
2-1
2.2. Main board
The
main
board
compromises
the
following
>
gic:
*
CPU
(Central
Processing
Unit)
The
80C386Sx
is
used
for
the
system
CPU
(3
2
bit
micro-
processor)
and
the
CPU
clock
frequency
canke
swit-
ched
for
low
speed
operation
from
the
standard
16
Mhz
to
8
Mhz.
System logic (HT-21)
The
HT-21
performs
CPU
and
peripheral
supRort
func-
tions
including
that
of
DMA
Controllers,
a
Memory
map-
per,
Timers,
Counters,
Interupt
controllers,
aus
control-
ler
and
their
supporting
circuitry.
This
chip
also
includes
address
buffers,
data
tranceivers,
memory
drivers,
parity
checking
and
supporiing
circuitry.
An
asynchronous
AT
Bus
clock
allows
for
aconstant
8
Mhz
clock
rate.
ROM (Read Only Memory)
The
ROM
BIOS
consists
of
one
128
x
8
bit
EPROM
mo-
dule.
RAM (Random Access Memory)
The
1
MB
on
board
standard
RAM
is
factory
installed.
Real Time Clock Generator (DS-1287)
The
DS-1287
is
a
complete
subsystem
in
atypical
appli-
cation.
A
lithium
energy
source,
quartz
crystal
and
write-
protection
circuitry
are
contained
within
the
24-pin
dual
in-
line
package.
The
functions
include
a
nonvolatile
time-of-day
clock,
an
alarm,
a
one
hundred-year
calender,
programmable
inter-
rupt,
square
wave
generator,
and
50
bytes
of
nonvolatile
static
RAM.
The
Real
Time
Clock
plus
RAM
is
distinctive
in
that
time-
of-day
and
memory
are
maintained
even
in
the
absence
of
power.
Keyboard Controller & Encoder (8042 & 80C51)
Controller is the 8042 and encoder is 80051
LCD/CRT Controller Interface (CL-GD 610, 620)
The
CL-GD610
graphics/attributes
chip
and
the
CL-
GD620
Sequencer/CRT
controller
chip
are
hardware
compatible
with
the
IBM
VGA,
EGA,
CGA
and
MDA
stan-
dard.
Parallel Port & Serial Port interface (82C601)
The
82C601
chip
features
drivers
for
the
output
buffers,
such
as
the
host
data
bus
and
parallel
port
data
bus.
It
in-
corporates
two
16450
compatible
UARTs,
one
enhanced
parallel
port
and
various
chip
selects.
Floppy disk interface (8473)
The
floppy
disk
controller
provided
with
two
floppy
disk
drivers
through
an
internal
FDD
interface
ard
the
other
external
FDD
interface.
The
system
has
a
built-in
hard
disk
with
a
capacity
of
40
Megabytes
(MB),
average
access
time
is
29
ms.
CS 55 798

2-2
2.2.1 Processor
The
central
processing
unit
consists
out
of
a
80C386SX
mi-
croprocessor
and
an
optional
80C387SX
numeric
coproces-
sor.
:
The
800386
generates
24
address
bits
and
16
data
bits.
The
24
address
bits
are
generated
by
23
dedicated
address
lines
A1
-
A23,
with
AO
being
derived
from
the
mic-
roprocessor
byte
low
enable
signal.
The
80C386SxX
instruc-
tion
set
is
a
superset
of
the
8086/8088
and
also
includes
the
instruction
set
of
the
80186.
The
80C386SxX
is
object
code
compatible
with
the
8086,
80286
and
80386
microprocessor.
2.2.2 Memory
The
80C386SX
has
a
physical
address
space
of
16
Mbytes
in
protected
mode
and
of
1
Mbyte
in
real
mode.
Figure
XXX
shows
how
this
address
space
is
utilized.
The
protected
mode
additional
address
space
is
a
continuation
of
the
real
mode
address
space
with
one
exception,
the
BIOS
ROM
is
present
at
the
top
of
the
16
Mbyte
address
space
(it
has
two
locations
in
protected
mode).
2.2.3 RAM
The notebook can carry up to 5MB RAM internally, which is
most sufficient memory to run the most demanding applica-
tions or to use the most powerful operating systems.
The notebook mainboard is socketed for one SIMM (Single
In line Memory Modules), which can hold 2MB or 4 MB of
memory.
The on board standard 1MB RAM can be expanded to 3 or
5MB.
On board
Addressable Memory Space
16 Mb FFFFFFR
Max. of 15 Mbytes of
extended memory via
expansion slot
5 Mb 800000h
Max. on-board
extended memory
of 4 Mbytes
System BIOS
VGA BIOS
896 kb
Reserved for
extension ROM
768 kb
Reserved for
video RAM
640 kb
Conventional memory
000000h
Fig. 2-1
CS 55 799
10000 ----
OAQO00h ----
Mox. of 4 Mbytes of
an-beard
expanded memory
shadaw memo
shadow mema
shadaw memo
MDA.03039
728/128

The
system
board
can
consists
of
the
following
memory
types:
Conventional Memory:
This
is
the
memory
from
OKB
to
640KB
and
is
used
in
Real
Made
by,
e.g.,
DOS.
Extended Memory:
This
is
all
addressable
memory
above
the
1MB
border
and
can
only
be
accessed
by
the
CPU
when
it
is
working
in
pro-
tected
mode.
Expanded Memory:
Expanded
memory
is
not
addressable
by
the
CPU,
but
must
be
mapped
via
I/O
into
addressable
memory
within
the
first
1MB
of
address
space
in
memory
page
frames
of
16KB.
The
chips
in
this
system
support
LIM-EMS
4.0.
Shadow Memory:
This
is
memory
between
640KB
and
1MB
which
is
normally
not
accessible
unless
the
chips
in
the
system
are
program-
med
to
enable
this
memory
to
copy
ROM
into.
It
can
also
be
mapped
to
addressable
memory
for
use
as
normal
RAM.
NOTE:
An
expansion
board,
connected
via
an
expansion
box,
with
expanded
memory
can
NOT
co-exist
with
the
on-board
ex-
panded
memory.
Only
one
of
the
two,
together
with
its
dri-
ver,
may
be
installed.
2.2.4 ROM
The
system
board
contains
one,
128K
by
8-bit
EPROM
mo-
dule.
The
ROM
is
not
parity
checked
and has
an
access
time
of
200ns.
The
ROM
is
a
combined
BIOS
containing
the
system
BIOS
and
video
BIOS.
It
also
contains
the
power
on
testing
and
boot
loader.
To
gain
faster
access,
the
BIOS
can
be
copied
to
RAM
du-
ring
power
on
(refer
to
section
4.1).
The
system
BIOS
is
present
at
the
following
location:
At
the
top
of
the
first
1
Mbyte
of
address
space
(0F0000
h
-
OFFFFF
h)
The
video
BIOS
is
present
at
the
following
location:
In the area from 512 Kbyte to 576 Kbyte
(0E0000 h - OEFFFF h)
2.2.5 VO Connections
On
the
main
board,
the
following
Input/Output
connections
are
provided:
CN2:
Expansion
slot
connector.
This
connector
is
located
at
the
rear
side
of
the
notebook.
CN11:
20-pin
flexible
flat
cable
diskette
drive
controi/data
connector.
CN6:
44-pin
header,
AT-bus
connector,
used
to
connect
AT-
embedded hard disk drives
DB-9P, serial port connector. Via the SETUP program
this port can be disabled, or can be configured as
PORT 1. PORT 1 has the base I/O address 3F8h.
For COM port assignments, refer to subsection
2.2.4.1.
CN:
2-3
Ji: DP-25P, serial port connector. Via the SETUP program
this port can be disabled, or can be config/ted as
PORT 2. PORT 2 has the base I/O address of 2F8h.
For COM port assignments, refer to subsection
2.2.4.1.
DB-25S, parallel port connector. Via the SETUP pro-
gram this port can be disabled, or can be ¢Onfigured
as PORT 2. PORT 2 has the base I/O address 378h.
For LPT port assignments, refer to subsection
2.2.4.1.
CN4:
CN1: DB-15S, analog video connector. This pot can be
disabled/ enabled via software, [Fn] + [F10}.
CN14: 6-pin, Mini-Din type keypad connector. This port sup-
ports AT compatible types only.
CN13: 6-pin, Mini-Din type PS/2 Mouse connector. This port
supports PS/2 compatible types only.
2.2.6 Serial And Parallel Port Assignments
The serial ports require eight consecutive I/O addresses for
access to the control and status registers. COM1is always
assigned to the highest /O address (when using only one
port, this may be either on 2F8h or 3F8h). If two serial ports
are installed COM2 is assigned to the next lower I/O ad-
dress (COM1 is assigned to 3F8h and COM2 is assigned to
2F8h). The table on the next page gives the three possible
configurations:
Configuration Base Port Base Port
Addr. Addr.
1 - - 2F8h COM1
2 3F8h COMi - -
3 3F8h COM1 2F8h COM2
Fig. 2-3
The parallel ports require three consecutive I/O addresses
for access to the control, status and data registers. LPT1 is
always assigned to the highest /O address available (when
using one parallel port, this may be on 278h, 378h or
3BCh). If two parallel ports are installed, LPT2 is assigned
to a lower V/O address. If three parallel ports are installed,
LPT3 is assigned to the lowest I/O address. The following ta-
ble gives the seven possible configurations:
Configu- Base Port Base Port Base Port
ration Addr. Addr. Addr.
1 - - - - 278h LPTi
2 - - 378h LPT1 - -
3 3BCh LPT1 - - - -
4 - - 378h LPT1 278h LPT2
5 3BCh LPT1 - - 278h LPT2
6 3BCh LPT1 378h LPT2 - -
7 3BCh LPT1 378h LPT2 278h LPT3
Fig. 2-4
CS 55 800

2-4
2.2.7
Video
Graphics
Adapter
The
on-board
video
graphics
capability
is
incorporated
using
a
Cirrus
CL-GD610/620
graphics
controller.
The
controller,
with
256KB
of
video
memory
(2x256kx4
DRAM)
supports
VESA
1
(800x600
high
resolution
with
16
colors
from
a
pa-
lette
of
262,144
colors)
and
VGA
resolutions
and
is
also
backwards
compatible,
emulating
EGA,
CGA,
MDA
and
Her-
cules
graphics
standards.
2.2.8 Video BIOS ROM
The
video
BIOS
is
physically
situated
with
the
system
BIOS
ina
128KB
EPROM
on
the
motherboard.
The
logical
ad-
dress
for
this
BIOS
is
located
in
system
memory
area
E0000h
to
EFFFFh.
The
BIOS
supports
132
column
and
60
line
text
modes,
72x540
and
800x600
16-color
graphics
mode,
and
800x600
16-color
VESA
1
mode.
The
BIOS
accesses
are
limited
to
8-bit
accesses
unless
the
BIOS
is
shadowed
into
RAM
using
the
SETUP
program.
Then
the
accesses
are
of
16-bits.
2.3 Power supply
The
power
board
houses
a
sophisticated
power
manage-
ment
which
ensures
that
the
NiCad
battery
can
power
the
system
for
the
maximum
possible
time.
2.3.1 Power low indication.
Under
battery
power,
the
Notebook
will
automatically
moni-
tor
the
battery.
*
When
it
senses
that
the
battery
has
about
20
minutes
of
power
available,
the
power
LED
will
begin
to
blink
once
every
second,
and
the
system
buzzer
will
beep
twice
every
15
seconds.
At
this
warning
work
should
be
finished
within
about
10
minutes.
*
If
the
Notebook
senses
that
the
battery
power
is
critical,
the
power
LED
will
blink
twice
a
second
and
the
beeps
will
sound
four
times
every
ten
seconds.
Files
must
be
saved
immediately
to
disk(ette),
or
supply
AC
power.
*
Ifthe
battery
should
“die”
before
time
was
left
to
shut
down
the
Notebook,
the
system
would
have
automatically
po-
wered
down.
2.3.2 Recharging a battery
The
Notebook
always
checks
on
the
charge
level
of
the
bat-
tery
via
a
sophisticated
power
management
control.
When
the
system
is
running
under
AC
power
the
CHR/STB
LED
will
be
lit
to
show
that
the
battery
is
being
recharged
(stand-
by
mode
is
disabled
under
AC
power).
Remark:
NiCad
batteries
have
a
tendency
to
lose
capacity
in
case
they
are
not
fully
discharged.
In
other
words,
if
they
are
al-
ways
used
for
approximately
the
same
time,
such
as
100
mi-
nutes,
and
then
recharged,
they
will
hold
only
a
100
minute
charge.
No
more
charge
can
be
increased.
Once
this
situation
occurs,
it
can
not
be
corrected
by
simply
discharging
and
recharging
again.
This
Notebook
has
the
utility
to
solve
this
problem
by
using
the
program
"DPDISCHG"”.
After
running
the
"DPDISCHG"
utility
the
power
has
to
be
turn
off
and
on
again
for
normal
operation.
CS 55 801
2.3.3 Power conservation.
The Notebook offers numerous power conservation features
in order to prolong battery life to the maximum.
* Intelligent power saving
This feature is automatic and requires no control from the
user. It is functional at all times on battery power.
1. A slower rate of DRAM refresh is used.
2. The FDD will be monitered wether the drive is being
used. If not the FDD controller will be shut down. Any
instruction which requires access to the drive, the
FDD controller will automatically be "woken up”.
3. The CPU monitors its own activity. If no operation is ta-
king place, the PCU is slowered down from the 16Mhz
or 8Mhz rate to 4Mhz.
When CPU activity is resumed, the clock speed is auto-
matically returned to the original speed.
This feature will be overridden if the "Auto-standby
disable" option in the Setup utility is selected.
* Selectable power down.
This feature is encountered in the Setup utility.
For a preset “trip time” which is specified in the Setup uti-
lity the system can be instructed to shut down power con-
suming components.
1. Backlight power off:
Screen backlight is powered down if the LCD power
down time elapses with no srceen activity and no key
stroke.
2. LCD screen power off:
LCD screen is powered down if the LCD power down
time elapses with no srceen activity and no key stroke.
3. HDD power down:
The HDD power is shut down if the HDD power down
time elapses with no hard disk activity.
2.3.4 Stanby Mode
Standby mode is only available, and necessary, when batte-
ry power is used. In this node the amount of power required
by the system is greatly reduced.
Standby mode can be entered in two ways:
* Press the Standby mode switch.
* Closing the LCD cover without turning off the power.
In this case a warning beep will sound to indicate that the
power has not been sitched off.
The techniques used to conserve power in standby mode
are listed below.
* The clock speed is reduced to 4Mhz.
The HDD is powered down.
Screen backlighting is switched off.
The LCD screen is switched off.
The LCD controiler is powered down
Floppy disk controller is powered down.
Keyboard LEDs are turned off.
+ * + © &
When the system is in standby mode, the CHR/STB LED
will flash to alert the system condition.

2.4 Keyboard
The
notebook’s
keyboard
has
79
keys
(for
USA)
or
80
keys
(for
Europe).
Some
of
the
keys
have
dual
assignments
which
are
activated
by
a
keystroke,
or
by
holding
down
the
special
Fn
function
key.
In
this
way
all
the
functions
of
a
full
size
101/102
keyboard
can
be
duplicated.
in
addition
special
key
combinations
are
assigned
to
control
other
functions
of
the
system.
Key Combination summary:
[Fn]
+
[Esc]
Disable
the
screen
save
feature
[Fn]
+
[1]
Increase
contrast
[Fn]
+
[2]
Decrease
contrast
[Fn]
+
[3]
Increase
brightness
[Fn]
+
[4]
Decrease
brightness
[Fn]
+
[F4]
Width
control
for
Hercules
displays
[Fn]
+
[F5]
Centering
control
for
displays
under
480
pixels
high
[Fn]
+
[F6]
Automap
Enable/Disable
{Fn]
+
[F7]
Runs
the
Notebook
at
low
speed
(8
Mhz)
[Fn]
+
[F8]
Runs
the
Notebook
at
high
speed
(16
Mhz)
[Fn]
+
[F9]
Normal/reverse
video
[Fn]
+
[F10]
LCD
or
CRT
ouput
[Fn]
+
[Alt]
European
[Alt
Gr]
key
[Fn]
+
[Ins]
Single
apostrophe
[’
]
[Fr]
+
[Shift]
+
[Ins]
A
tilde
mark
[
~
]
2-5
2.5 Video
Refer to 2.2.5
2.6. Hard Disk Drives
2.6.1. Conner CP4044
The Conner CP4044 is a 40MB, 3” hard disk dive. The dri-
ve is mounted internally within the chassis of t@ system
unit.
For further product specifications, refer to chaplesr 9.2.
2.7. Floppy Disk Drives
2.7.1. Sony MPF-220
The Sony MPF-220 is a 3" floppy disk drive. The drive can
work with either normal (720KB) or high density (1.44MB)
floppy disks. The drive has a sensor to detect normal or
high density. In the SETUP program the floppy disk should
be configured as: 3" 1.44MB
The drive is mounted internally within the chassis of the sys-
tem unit.
For further product specifications, refer to chapter 9.1.
CS 55 802

3.
CONFIGURATIONS
This
chapter
describes
the
upgrade
options
and
the
pos-
sible
memory
configurations
of
the
system.
3.1 System Upgrades
Options
that
can
be
ordered
to
upgrade
the
system
are
the
following:
Description
80C387SX numeric co-processor
2MB SIMM (80ns)
4MB SIMM (80ns)
3.2 Memory configurations
The
notebook
has
standard
1MB
(=
1024KB)
of
RAM
on
board
and
this
can
be
expanded
up
to
SMB.
Generally,
DOS
can
only
use
the
first
640KB
of
RAM
(base
memory),
and
memory
above
640KB
can
be
treated
in
dif-
ferent
ways.
* Extended Memory:
This
is
a
simple
continuation
of
Base
1MB
memory.
less
using
special
programs
or
utilities,
most
of
the
soft-
ware
applications
will
be
unable
to
address
this
memory.
* Expanded Memory:
Extended
memory
can
be
transformed
into
Expanded
memory (LIM EMS 4.0).
This
is
a
tecnique
of
forming
a
"window"
in
the
Base
me-
mory
through
which
some
programs
can
see
“pages”
of
data
in
Expanded
memory.
The
program
can
therefore
address all RAM.
* Shadow RAM:
Shadow
RAM
applies
only
to
the
first
384K
of
extended
memory
(standard
notebooks).
Instead
of
using
this
spa-
ce
as
extended
or
expanded
memory,
the
system
and/or
VGA
BIOS
can
be
copied
to
this
space.
It
will
lead
to
some
performance
gain,
especially
in
appli-
cations
which
make
extensive
calls
on
the
BIOS.
Refer
to
the
documentation
of
the
software
(program)
to
be
installed
to
decide
which
option
to
choose.
Summarizing:
Enter
the
total
amount
of
RAM
in
the
system
under
the
item
Memory
Size.
If
only
1MB
RAM
is
available,
then
the
spare
384KB
can
be
designated
as
Shadow
RAM,
EMS
memory,
or
Extended
Memory
RAM
beyond
1MB,
may
be
allocated
as
Extended
or
Ex-
panded,
or
a
mixture
of
both.
Only
use
whole
numbers
of
megabytes
when
dividing
RAM.
The
table
below
shows
all
the
possiblities.
Note:
Extended
Memory
is
automatically
calculated
by
SE-
TUP
after
the
other
items
have
been
entered.
3-1
Memory size 1M 1M 1M 3M MM 3M
EMS size 384K 256K Off 2304K 280K 256K
Shadow Ram Off 128K Off 128K 28K 128K
Extended Off Off 384K Off Mi 1M
Mem
Fig. 3-1
Memory size 5M 5M 5M 5M 5M
EMS
size
4352K
3328K
2304K
120K
256K
ShadowRam
128K
128K
128K
12K
128K
Extended
Mem.
Off
1M
2M
3M
4M
Fig. 3-2
3.2.1 Expanded Memory
The on-board chipset is fully hardware/softwal@ compatible
with the Lotus Intel Microsoft Expanded Memory Specifica-
tions (LIMEMS) version 4.0. This implementation allows a
64KB block in the area from 040000h - O9FFFFH (256KB -
640KB) or from 0C0000h to OEFFFFh to be used as a wind-
ow, allowing the complete 7552KB (maximum) Of on-board
RAM to be accessed. Accessing is accomplished by means
of paging. The 64KB block is divided into four! 6KB pages
which
can
access
individual
portions
of
the
7552KB
area.
Expanded
memory
can
be
assigned
by
using
the
SETUP
uti-
lity.
The
EMS’
field
in
the
SETUP
program
must
be
set
to
the
correct
value
when
using
EMS
memory.
This
field
speci-
fies
the
amount
of
memory
to
be
used
as
expanded
memory
by
an
expanded
memory
driver,
such
as
the
QUAD_EMS.SYS
driver
provided
on
the
utility
diskette.
if
EMS
memory
is
being
used
on
an
expansion
board,
via
an
expansion
box,
the
EMS’
field
in
the
SETUP
utility
must
be
set
to
zero.
The
EMS
driver
delivered
with
expansion
board
should
be
used
instead
of
the
QUAD_EMS
driver.
Memory address map
The System Memory Map is shown as follows:
lO9FFFF __|tes |
eee
128K
By-|
Video
RAM
(Graphic
|
|OBFFFF _ |tes Display Buffer,
a ea EMS default memory
ODFFFF Bytes base address
peso
eas
|
ROM
for
Video
BIOS
OEFFFF Bytes
pee 64K ROM for System BIOS
| OFF FFF Bytes |
100000- | 15M Memory - 1M to 15M
Bytes installed on memory
| FDFFFF expansion options
[FEoo00- | 64K Duplicated code
Bytes assignment at address
FFFFFF OEO000
|FFOO0O- | 64K Duplicated code
Bytes
[FEFFFF
assignment at address
[FFFFFF | ___|__OF 0000
ET
CS 55 803

3-2
3.2.2 Address Map
VO Address Map
1 000 -O1F DMA controller #1
020 - O3F Interrupt Controller #1
| 040 - o5F
1 O60 Keyboard Controller |
|
062
-
O6F
|
fost Port B Register, PPI
f 070 -07F Real Time Clock, NMI (Non-
interruptable Mask) bit |
| os0-o8F | DMAPageReg ss
f Reset
093 - OOF DMA Map Reg.
OAO - OBF Interrupt Controller #2
| OCO-ODF_ | DMAController #2
| oFo-oFF | MathCoprocessor
| 1£8-1E9 | PMUControlReg
[ 1EC-1EF | EMSandContolReg
[ 2Fe-2FF | SerialPot2 ss
| 300-31F | Reseved ss Cd
| 378-37F | Parallel printer port 1
| 380-3AF | Reserved
| 3B0-3DF | Video Graphics Monitor
i Adapter
3FO - 3F7 Diskette Controller |
| 3F8 - SFF_ | SerialPorti
At power-on time, the Non-Maskable Interrupt (NMI) into the
80386SX is masked off. The Mask Bit can be set and reset
with System Programs as following:
Mask on : Write to I/O address hex 070, with
data bit 7 equal to a logic 0.
Mask off : Write to 1/O address hex 070, with
data bit 7 equal to a logic 1.
CS 55 804

4. SYSTEM UTILITY
in
this
chapter
a
description
is
given
of
the
utilities
delivered
with
the
system
on
the
utilities
diskette.
4.1 Setup
The
SETUP
consists
of
a
display
page
for
the
ROM
version.
To
access
the
ROM
BIOS
SETUP,
the
following
keys
should
be
pressed
simultaneously:
<CTRL> + <ALT> + <ESC>
This
can
be
done
at
any
time,
provided
that
no
running
ap-
plication
has
taken
over
the
keyboard
interrupt
handlers.
<CTRL>+<ALT>
+
<ESC>
may
be
pressed
during
Power
On
Diagnostics
when
the
machine
is
first
switched
on
to
change
the
setup
information
prior
to
the
machine
booting.
If
a
configuration
error
is
detected
during
POD,
an
appropriate
beep
code
and
error
message
is
displayed,
then
the
follo-
wing
message
is displayed:
Press
<F1>
toresume,
<F3>
to
enter
Setup
lithe
<Fi>
key
is
pressed,
the
machine
continues
with
its
booting
procedure.
If
<F3>
is
pressed,
the
SETUP
pro-
gram
is
immediately
executed.
The
SETUP
consists
of
two
columns,
in
which
the
current
values
of
the
CMOS
RAM
are
highlighted.
The
current
set-
tings
can
be
changed
by
using
the
<INS>
and
<DEL>
the
keys.
<+>,<+>,< + >,< 4 >and <ENTER>:
Use
to
select
the
field(s)
within
the
page
whose
values
are
to be changed.
<INS>,
<DEL>
:
Used
to
change
the
field
to
the
required
value.
<F10>
:
Used
to
write
the
new
configuration
information
to
the
CMOS
and
reboot
the
system.
<F1> : Changes will not be saved into the
CMOS RAM and the system will reboot.
In the disk version of SETUP, pressing
<F1> will not reboot the system.
4.1.1 Setup page
4-1
The system SETUP program is contained in theB31I0S-ROM
which is built into the set. It can be invoked by pissing si-
multaniously the CTRL and the ALT key, and wife holding
them down, hitting the ESC key. The screen sh0-wn in Fig. 4-
1 will appear on the LCD (or the external monito’ if attached
and selected).
DATE (MM/DD/YY) 11/27/90
TIME (HH:MM:SS) 10:45:00
INTERNAL DISKETTE 1.44M
EXTERNAL DISKETTE NONE
HARD DISK 20MB
HDD POWER DOWN 1 MIN
BOOT DISK Cc
SPEED SELECT HIGH
PASSWORD DISABLE
RS232 ENABLE
MODEM DISABLE
RS232/MODEM COM1/COM2
MEMORY SIZE 1M
EMS SIZE OFF
SHADOW RAM 384K
EXT MEMORY SIZE OFF
AUTO STANDBY ENABLE
DISPLAY TYPE VGA
VIDEO ATTRIBUTE NORMAL
LCD POWER DOWN 2 MIN
VERTICAL COMPEN.. STRETCHED
WIDTH COMPRESSION DISP LEFT
AUTO MAP ENABLE
BOLD FONT DISABLE
Fig. 4-1
Date and time:
These two items can be corrected by typing in the accurate
figures from the keyboard. The same format as shown on
the screen has to be used.
Internal External diskette:
Internal diskette is the Notebook’s installed floppy. This is a
1.44MB, 3.5" drive, so it is entered as 1.44MB. If a external
drive is added through the external drive connector it must
be configured here.
Either 1.2MB or 360K for 5.35" drives, or 1.44MB ot 720KB
for 3.5" drives. If no external drive is applicable, select none.
Hard disk
The Notebook hard disk has a capacity of 40MB or 80MB.
Enter this item as 40MB or 80MB accordingly, select NONE
to disable the hard disk.
CS 55 805

4-2
HDD Power Down:
A
power
saving
feature.
This
feature
comes
into
operation
automatically
if
no
keystroke
is
entered,
or
software
instruc-
tion
issued,
for
a
certain
length
of
time.
This is the "trip time”.
When
no
activity
is
registered,
the
trip
time
starts
counting
down.
If
the
trip
time
expires
with
no
activity,
automatic
po-
wer
down
takes
place.
The
SETUP
utility
allows
to
choose
the
time
which
will
elapse
(in
minutes)
before
the
notebook
implements
the
power
saving.
Boot from:
Via
this
item
the
system
will
find
an
operating
system
to
load
on
and
start
up.
Three
possiblities
are
available:
* Boot from hard disk
*
Boot
from
external
floppy,
assigned
as
drive
B
*
Boot
from
internal
floppy,
assigned
as
drive
A
Speed select:
This
setup
item
specifies
the
speed
at
which
the
system
will
run
each
time
you
start
or
reset
the
notebook,
either
HIGH
(16MHz)
or
LOW
(8MHz).
Note:
The
system
speed
can
be
changed
any
time
by
using
speci-
al
key
combination,
see
chapter
2.4.
Password:
The
password
feature
enables
or
disables
data
security.
Instruction
guiding
the
user
through
the
proces
of
altering
the
password
are
diplayed
on
the
highlighted
line
of
the
screen.
RS232, Modem, RS232/Modem:
If
no
serial
device
is
installed
through
the
serial
port
a
little
power
by
diabling
the
item
RS232.
*
Similary
if
no
internal
modem
is
installed
disable
the
item
modem,
*
For
the
third
item
RS232/Modem,
the
location
of
each
of
these
items
can
be
selected
as
either
COM1
(address
3F8
hex
and
interrupt
IRQ4)
or
COM2
(address
2F8
hex
and
interrupt
IRQ3).
Memory
size,
EMS
size,
Shadow
RAM,
Ext.
Memory
size:
These
items
are
are
entered
in
Kilobytes
(K)
or
Megabytes
(M).
A
standard
notebook
has
1MB
of
Random
Access
Me-
mory
(RAM)
and
this
can
be
expanded
up
to
SMB.
Note:
DOS
can
only
use
the
first
640KB
of
RAM
(called
base
me-
mory)
and
memory
above
640KB
can
be
treated
in
different
ways,
see
chapter
3.2.
Auto standby:
This
is
the
trip
time
before
the
system
goes
into
standby
mode.
Power management:
Selects the power management of the notebook.
Monitor type:
Selects the type of monitor to be connected to the notebook.
CS 55 806
Display type:
This item configures the kind of video display you are using.
The notebook has a VGA controller, but is fully backward
compatible with previous video standards.
Selected displays are:
VGA, EGA, CGA, and MGA (MGA includes the MDA and
Hercules standards).
Video attribute:
Selects wether the notebook will start up using normal or re-
verse video.
Note:
The video mode can be changed any time by using special
key combination, see chapter 2.4.
LCD Power down:
Another power saving feature. The trip time lenght indicates
when the system shuts down the screen backlighting.
Vertical compensation, width compression:
Refers to the way the notebook treats displays which are
shorter or wider than the LCD screen, see also chapter 2.4
for an explantion of the options.
The option selected in Setup will be used by the system un-
less the selection is overiden via the key combinations des-
cribed in chapter 2.4.
Automap:
When enabled, colors are mapped to shades of grey. When
disabled, colors are mapped to one of two shades.
Bold font:
When enabled, intensified characters are shown as bold.
When disabled, intensified chracters are shown as high-
lighted.

5
SYSTEM
UNIT
DISASSEMBLY
5.1
Assembly/disassembly
5.1.1 Top cover removal
Before
removing
the
top
cover
of
the
set,
be
sure
to
discon-
nect
the
connector
of
the
battery
charger
at
the
rearside
of the set.
Also be sure that the battery is removed.
Refer to Fig. 5-1
Remove the two screws in the bottom of the set.
Remove
three
screws
at
the
rear
of
the
set,
after
removing
the
coverplates.
Open
the
cover
for
the
video-connector
and
remove
two
screws
which
are
located
there.
Open
the
cover
for
the
keyboard
/
mouse
connector
and
re-
move
the
two
screws
which
are
there.
Fig. 5.1
5-1
For the next part refer to Fig. 5-2
Open up the screen by using the latches on tly sides of
the set.
Remove the coverplate which covers two scr’¥s which
hold the RAM-expansion slots.
Unlock screws (A) and remove the coverplate.
The keyboard can now be slided in the direct? of arrow B
for about 1 - 2 cm. Be carefull not to damagelhe key-
board connection wire D.
Remove screw C which hold the uppercase.
Remove the flat-cable to the LCD-display by liting the con-
nector and sliding the cable out, see Fig. 5-3.
Lift the topcover for about 3 cm and disconnect two connec-
tors from the LCD-backlight and the battery, s°@ Fig. 5-4.
Remove the uppercover from the set and youCan access
the motherboard and the power board.
MDA.03023
728/124
Fig. 5.2
MDA.03024
T28/124
CS 55 807