IBM PS/2 CL57 SX Owner's manual

FRONT
PICTURE 1
November 29, 1991
Part Number 10G4419
Form Number S10G-4419-00
IBM PS/2 Model CL57 SX HMR
¦ Copyright IBM Corp. 1991
FRONT - 1

EDITION Edition Notice
Safety Information
Refer to the Hardware Maintenance Reference General Information
pamphlet in this manual for the following information:
General Safety
Electrical Safety.
First Edition (November 1991)
The following paragraph does not apply to the United Kingdom or any
country where such provisions are inconsistent with local law.
INTERNATIONAL BUSINESS MACHINES CORPORATION PROVIDES THIS PUBLICATION
"AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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transactions, therefore, this statement may not apply to you.
This publication could include technical inaccuracies or typographical
errors. Changes are periodically made to the information herein;
these changes will be incorporated in new editions of the publication.
IBM may make improvements and/or changes in the product(s) and/or the
program(s) described in this publication at any time.
It is possible that this publication may contain reference to, or
information about, IBM products (machines and programs), programming,
or services that are not announced in your country. Such references
or information must not be construed to mean that IBM intends to
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Requests for technical information about IBM products should be made
to your IBM Authorized Dealer or your IBM Marketing Representative.
IBM may have patents or pending patent applications covering subject
matter in this document. The furnishing of this document does not
give you any license to these patents. You can send license
inquiries, in writing, to the IBM Director of Commercial Relations,
IBM Corporation, Armonk, NY 10577.
¦ Copyright International Business Machines Corporation 1991. All
rights reserved.
Note to U.S. Government Users -- Documentation related to restricted
rights -- Use, duplication or disclosure is subject to restrictions
set forth in GSA ADP Schedule Contract with IBM Corp.
IBM PS/2 Model CL57 SX HMR
Edition Notice
¦ Copyright IBM Corp. 1991
EDITION - 1

CONTENTS Table of Contents
EDITION Edition Notice
CONTENTS Table of Contents
FRONT_1 Notices
FRONT_1.1 Trademarks and Service Marks
1.0 Product Description
1.1 Security
1.1.1 Power-On Password and Keyboard Password
1.2 System Board Features
1.2.1 Microprocessor
1.2.2 CMOS RAM and CMOS RAM Extension
1.2.3 ROM BIOS/POST
1.2.4 Diskette-Drive Controller
1.2.5 Serial Connector
1.2.6 Parallel Connector
1.2.7 External Input Device Connector
1.2.8 Optional Communication Adapter Slot
1.2.9 System Expansion Connector
1.2.10 Suspend and Resume Functions
1.3 VGA with LCD Controller
2.0 Option Compatibility
2.1 Hard Disk Drive
2.1.1 System Partition
2.1.2 Errors during POST
2.1.3 Replacing the Hard Disk Drive
2.2 Diskette Drive and Diskette
3.0 System Memory Requirements
4.0 Specifications
4.1 System
4.2 AC Adapter
5.0 Special Tools
6.0 Removals and Replacements
6.1 1010 Keyboard and Top Cover
6.1.1 Keyboard Removal
6.1.2 Top Cover Removal
6.2 1020 Trackball Assembly
6.3 1030 Indicator Card and Speaker
6.4 1040 Hard Disk Drive
6.5 1050 Diskette Drive
6.6 1060 Backup Battery
6.7 1070 Keyboard Control Card
6.8 1080 Display Control Card
6.9 1090 System Board and I/O Panel Assembly
6.10 1100 Voltage Converter
6.11 1110 Math Coprocessor
6.12 1120 Communication Adapter
6.13 1130 IC DRAM Card
6.14 1140 LCD Assembly
6.15 1150 LCD Panel
7.0 Locations
7.1 Front View
7.2 Rear View
7.3 Interior View without Keyboard
7.4 Top Cover
7.5 System Status Indicators
7.6 System Board
7.7 Display Control Card
IBM PS/2 Model CL57 SX HMR
Table of Contents
¦ Copyright IBM Corp. 1991
CONTENTS - 1

FRONT_1 Notices
References in this publication to IBM products, programs, or services do
not imply that IBM intends to make these available in all countries in
which IBM operates. Any reference to an IBM product, program or service
is not intended to state or imply that only IBM's product, program, or
service may be used. Any functionally equivalent product, program, or
service that does not infringe any of IBM's intellectual property rights
or other legally protectible rights may be used instead of the IBM
product, program, or service. Evaluation and verification of operation in
conjunction with other products, programs, or services, except those
expressly designated by IBM, are the user's responsibility.
IBM may have patents or pending patent applications covering subject
matter in this document. The furnishing of this document does not give
you any license to these patents. You can send license inquiries, in
writing, to the IBM Director of Commercial Relations, IBM Corporation,
Purchase, NY 10577.
Subtopics
FRONT_1.1 Trademarks and Service Marks
IBM PS/2 Model CL57 SX HMR
Notices
¦ Copyright IBM Corp. 1991
FRONT_1 - 1

FRONT_1.1 Trademarks and Service Marks
The following terms, denoted by an asterisk (*) in this publication, are
trademarks of the IBM Corporation in the United States and/or other
countries:
IBM Personal System/2
PS/2 Micro Channel.
IBM PS/2 Model CL57 SX HMR
Trademarks and Service Marks
¦ Copyright IBM Corp. 1991
FRONT_1.1 - 1

1.0 Product Description
The IBM (*) Personal System/2 (*) Model CL57 SX (hereafter called Model
CL57 SX) is a laptop-size computer, with a color liquid crystal display
(LCD), that uses the IBM Micro Channel (*) architecture. The Model CL57
SX operates on rechargeable batteries as well as on an external power
source. The features of the Model CL57 SX include:
Security: power-on password and keyboard password
System board:
- 20-MHz 80386SX microprocessor
- 80387SX math coprocessor socket
- Minimum of 2MB (MB equals 1 048 576 bytes) random access memory
(RAM) on the system board, up to 16MB expandability with
integrated circuit dynamic RAM (IC DRAM) cards.
- Complementary metal-oxide semiconductor (CMOS) RAM with a
real-time clock and an 8KB CMOS RAM (KB equals 1024 bytes)
extension, to store configuration and status information
- Read-only memory basic input/output system (ROM BIOS)
- Diskette-drive controller
- Hard disk drive (fixed disk drive) with system partition supported
- Serial connector
- Parallel connector
- System expansion connector
- Keyboard controller
- External input device connector
- Suspend and resume functions
- Optional communication adapter slot for:
Internal data/fax modem
Secondary serial adapter.
Display Control Card:
- Video Graphics Array (VGA) with Liquid Crystal Display (LCD)
controller
- LCD panel connector
- External display connector
A maximum 640 by 480 PELs color LCD panel with a back light
External power-supply device:
AC adapter, automatically switches to the 90 - 137 V ac or the 180 -
265 V ac range, 50 or 60 Hz.
84, 85, or 89-key keyboard
Integrated trackball
Speaker with a volume control.
(*) Trademark of the International Business Machines
Corporation.
Subtopics
1.1 Security
1.2 System Board Features
1.3 VGA with LCD Controller
IBM PS/2 Model CL57 SX HMR
Product Description
¦ Copyright IBM Corp. 1991
1.0 - 1

1.1 Security
Subtopics
1.1.1 Power-On Password and Keyboard Password
IBM PS/2 Model CL57 SX HMR
Security
¦ Copyright IBM Corp. 1991
1.1 - 1

1.1.1 Power-On Password and Keyboard Password
System access can be denied by using a power-on password or keyboard
password. To service a system with an active and unknown password,
power-off the system and do the following.
1. Power-off the system.
2. Remove the keyboard and the top cover.
3. Identify the password-override connector on the system board (see
"System Board" in topic 7.6).
4. Install a jumper over the pins as shown.
PICTURE 2
5. Power-on the system and leave it until the POST ends.
Note: Make sure that you remove the jumper from the password-override
connector when you are finished.
To set the password, you must start the system program, select the Set
features from the Main Menu, then select Set password and unattended start
mode and follow the instructions.
IBM PS/2 Model CL57 SX HMR
Power-On Password and Keyboard Password
¦ Copyright IBM Corp. 1991
1.1.1 - 1

1.2 System Board Features
The major features of the system board are:
80386SX Microprocessor
CMOS RAM and CMOS RAM extension
ROM BIOS
Diskette-drive controller
Serial connector
Parallel connector
External input device connector
Optional communication adapter slot
System expansion connector
Suspend and resume functions.
Subtopics
1.2.1 Microprocessor
1.2.2 CMOS RAM and CMOS RAM Extension
1.2.3 ROM BIOS/POST
1.2.4 Diskette-Drive Controller
1.2.5 Serial Connector
1.2.6 Parallel Connector
1.2.7 External Input Device Connector
1.2.8 Optional Communication Adapter Slot
1.2.9 System Expansion Connector
1.2.10 Suspend and Resume Functions
IBM PS/2 Model CL57 SX HMR
System Board Features
¦ Copyright IBM Corp. 1991
1.2 - 1

1.2.1 Microprocessor
The microprocessor interprets and carries out instructions. The 80386SX
microprocessor is a 32-bit processor with a 16-bit external data bus and a
24-bit external address bus. The microprocessor operates in two modes:
real-address mode and virtual-address (protected) mode. The
microprocessor speed is 20 MHz.
IBM PS/2 Model CL57 SX HMR
Microprocessor
¦ Copyright IBM Corp. 1991
1.2.1 - 1

1.2.2 CMOS RAM and CMOS RAM Extension
The CMOS RAM provides 64 bytes of storage. The real-time clock uses the
first 14 bytes of this storage to track the date, time, and battery level.
The remaining 50 bytes are assigned to store system configuration and
security information. The 8KB CMOS RAM extension stores additional
configuration and system status information.
The data stored in CMOS RAM and CMOS RAM extension is kept active by the
backup battery when the system is powered-off. If stored data is lost due
to a depleted or removed battery, the data can be restored using one of
the following methods:
If the user has a customized configuration that uses settings other
than the default, run the Restore configuration from the system
utility programs stored on the hard disk.
If the configuration settings use the default, run the Automatic
configuration from the system utility programs stored on the hard
disk.
IBM PS/2 Model CL57 SX HMR
CMOS RAM and CMOS RAM Extension
¦ Copyright IBM Corp. 1991
1.2.2 - 1

1.2.3 ROM BIOS/POST
Read Only Memory - Basic Input/Output System (ROM BIOS) contains the
instructions and routines that control the keyboard, diskette drive, hard
disk drive, displays and other major I/O devices in the system. Some
adapters have their own ROM modules containing extended BIOS routines that
work with the system board ROM BIOS. The routines for performing the
power-on self-test (POST) are also contained in the ROM.
IBM PS/2 Model CL57 SX HMR
ROM BIOS/POST
¦ Copyright IBM Corp. 1991
1.2.3 - 1

1.2.4 Diskette-Drive Controller
The controller connects to the diskette drive through two interface
connectors on the system board using a flexible cable. Both signals and
voltages are supplied through this cable. These signals and voltages can
only operate one IBM 3.5-inch diskette drive.
IBM PS/2 Model CL57 SX HMR
Diskette-Drive Controller
¦ Copyright IBM Corp. 1991
1.2.4 - 1

1.2.5 Serial Connector
The serial connector is fully programmable and is capable of asynchronous
communications at a maximum speed of 19.2 kb/s. The 9-pin D-shell
connector provides the signals to drive a standard EIA-232D device. The
connected device is identified by the system configuration as either
SERIAL_1 or SERIAL_2.
If an optional communication slot with a serial adapter is installed, the
device address must be different from the primary one.
Note: Conflicts occur when two or more devices have the same address.
Use the Set configuration from the system utility programs stored
on the hard disk. Select View configuration to verify that no
ports have the same address.
IBM PS/2 Model CL57 SX HMR
Serial Connector
¦ Copyright IBM Corp. 1991
1.2.5 - 1

1.2.6 Parallel Connector
The parallel connector allows the attachment of devices that accept 8 bits
of parallel data at standard transistor-transistor logic (TTL) levels.
The connector is a 25-pin, D-shell connector and is designed primarily for
printers. However, the connector can be used as a general input/output
port for any device or application that matches its input/output
capabilities. The system can support four different devices, each
addressed separately as PARALLEL 1, PARALLEL 2, PARALLEL 3, or PARALLEL 4.
IBM PS/2 Model CL57 SX HMR
Parallel Connector
¦ Copyright IBM Corp. 1991
1.2.6 - 1

1.2.7 External Input Device Connector
The external input device connector is located at the rear of the system
and accepts a mouse or 17-key numeric keypad. The Model CL57 SX has only
one input-device connector. However, it is possible to connect the
numeric keypad and the mouse at the same time through another input-device
connector located at the rear of the numeric keypad.
The integrated trackball does not work when the mouse is connected.
IBM PS/2 Model CL57 SX HMR
External Input Device Connector
¦ Copyright IBM Corp. 1991
1.2.7 - 1

1.2.8 Optional Communication Adapter Slot
This option slot can accept either a secondary serial adapter or an
internal data/fax modem. The serial adapter complies with EIA-232D
standard and provides alternative input/output capabilities that have the
same function as the primary serial connector on the rear of the system.
The internal data/fax modem is a dual-function modem that can operate as a
G3 facsimile as well as a data modem.
IBM PS/2 Model CL57 SX HMR
Optional Communication Adapter Slot
¦ Copyright IBM Corp. 1991
1.2.8 - 1

1.2.9 System Expansion Connector
This is a 150-pin connector that can accept a communications cartridge II
to support various communication capabilities provided with a 16-bit Micro
Channel adapter installed in the cartridge.
IBM PS/2 Model CL57 SX HMR
System Expansion Connector
¦ Copyright IBM Corp. 1991
1.2.9 - 1

1.2.10 Suspend and Resume Functions
The suspend and resume functions are unique methods to minimize the use of
power from the battery. When the computer enters suspend mode, all tasks
are suspended and their present states are stored in memory to save power.
In suspend mode, the system is placed in a sleep state where only a
minimum amount of power is consumed.
When the system returns to operating mode using the resume function, the
system restores the same states as when it entered suspend mode.
The system enters suspend mode when:
The display is closed.
The time specified by the System power off after option in the Set
Advanced Features program has elapsed.
A battery-low condition (blinking an amber LED) is detected.
The PS2 OFF command in the Set Advanced Features program has been
entered.
The temperature is outside the operating range.
The humidity is outside the operating range.
The system returns to operating mode when:
The display is opened.
Setting PS2 ON HH:MM:SS command in the Set Advanced Features program
before entering suspend mode.
The "ring indicator" on the communication interface is detected.
Note: If a battery pack is replaced during suspend mode with the display
opened, close the display and open it again to return to operating
mode.
IBM PS/2 Model CL57 SX HMR
Suspend and ResumeFunctions
¦ Copyright IBM Corp. 1991
1.2.10 - 1

1.3 VGA with LCD Controller
The VGA with LCD controller is on the display control card and supports
color and monochrome analog direct-drive displays in a variety of
alphanumeric (A/N) text and all-points-addressable (APA) graphics modes.
The VGA with LCD controller supports a maximum of 720 by 400 (640 by 400
on LCD) picture elements (PELs) in text mode, and a maximum of 640 by 480
PELs in graphics mode. The VGA with LCD controller is capable of
displaying 256 colors at one time. Composite video is not supported.
IBM PS/2 Model CL57 SX HMR
VGA with LCD Controller
¦ Copyright IBM Corp. 1991
1.3 - 1