IBM PS/2 35 SX Hardware Maintenance Reference
  1. Manuals
  2. Brands
  3. IBM Manuals
  4. Desktop
  5. PS/2 35 SX
  6. Hardware maintenance reference

IBM PS/2 35 SX Hardware Maintenance Reference

Hide thumbs
Table of Contents

Advertisement

Quick Links

IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR
FRONT
PICTURE 1
IBM PS/2 Models 35SX and 35LS
Hardware Maintenance Reference
March 17, 1992
Part Number 10G6620
Form Number S84F-9845-02
¦ Copyright IBM Corp. 1991, 1992
FRONT - 1

Advertisement

Table of Contents
loading

Related Manuals for IBM PS/2 35 SX

Summary of Contents for IBM PS/2 35 SX

  • Page 1 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR FRONT PICTURE 1 IBM PS/2 Models 35SX and 35LS Hardware Maintenance Reference March 17, 1992 Part Number 10G6620 Form Number S84F-9845-02 ¦ Copyright IBM Corp. 1991, 1992 FRONT - 1...

  • Page 2: Edition Notice

    ¦ services in your country. ¦ ¦ ¦ ¦ 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 ¦...

  • Page 3: Notices

    Notices 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.

  • Page 4: Table Of Contents

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Table of Contents CONTENTS Table of Contents EDITION Edition Notice FRONT_1 Notices CONTENTS Table of Contents Product Description Security System-Board Features Option Compatibility Incompatible Adapters Hard Disk and Diskette Drives...

  • Page 5: Product Description

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Product Description 1.0 Product Description The IBM (*) Personal System/2 (*) Model 35 computers have the following features: Security Cover lock Power-on password Keyboard password Bolt down capability System board 20-MHz microprocessor (See "Microprocessor"...
  • Page 6 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Security 1.1 Security Subtopics 1.1.1 Cover Lock 1.1.2 Power-On Password 1.1.3 Bolt Down Capability ¦ Copyright IBM Corp. 1991, 1992 1.1 - 1...
  • Page 7 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Cover Lock 1.1.1 Cover Lock The cover lock is located on the bottom front-left of the system unit and can be unlocked with the user's key. If the keys for the cover lock are lost, a new cover lock assembly can be ordered (see the parts section in the Hardware Maintenance Service pamphlet).
  • Page 8 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Power-On Password 1.1.2 Power-On Password A power-on password denies access to the system when the system is powered-on. To service a system with an active and unknown power-on password: Power-off the system.
  • Page 9 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Bolt Down Capability 1.1.3 Bolt Down Capability The bolt-down feature allows the computer to be attached to a table or desk. (See page 7.2 for the bolt-down holes.) ¦ Copyright IBM Corp. 1991, 1992...
  • Page 10 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR System-Board Features 1.2 System-Board Features The major features of the system board are: 20-MHz microprocessor Math coprocessor connector CMOS RAM 16-bit VGA graphics controller Serial port Parallel port Keyboard connector Diskette-drive controller Pointing-device (mouse) connector.
  • Page 11 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Microprocessor 1.2.1 Microprocessor The Model 35 SX and 35 LS use an 80386SX microprocessor; the Model 35 SLC uses an IBM386 SLC microprocessor, a high-performance 80386-compatible microprocessor with 8KB of internal cache memory.
  • Page 12 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR CMOS RAM 1.2.2 CMOS RAM The CMOS RAM provides 64 bytes of storage. The real-time clock uses the first 14 bytes to track the date, time, and battery level. The remaining 50 bytes are used to store system-configuration and security information.
  • Page 13 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR ROM BIOS 1.2.3 ROM BIOS ROM BIOS contains the instructions and routines that control the keyboard, diskette drives, hard disk drive, displays, and other major input/output devices in the system.
  • Page 14 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 16-bit VGA Graphics Controller 1.2.4 16-bit VGA Graphics Controller A 16-bit VGA graphics controller is on the system board. The controller supports color and monochrome analog direct drive displays in a variety of modes, including alphanumeric text mode and all-points-addressable (APA) graphics mode.
  • Page 15 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Serial Port 1.2.5 Serial Port The serial port is fully programmable and supports asynchronous communications. The 25-pin, D-shell connector provides the signals to drive a device with a standard 25-contact, RS-232 connector.
  • Page 16 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Parallel Port 1.2.6 Parallel Port The parallel port allows the attachment of devices that accept eight bits of parallel data at standard transistor-transistor-logic (TTL) levels. The port has a 25-pin, D-shell connector and is designed primarily for printers.
  • Page 17 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Diskette-Drive Controller 1.2.7 Diskette-Drive Controller The controller connects to the diskette drive(s) through a single 40-pin connector on the system board. Signals and voltages are supplied through the diskette-drive cable that plugs into the connector.
  • Page 18 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Keyboard Connector and Pointing-Device Connector 1.2.8 Keyboard Connector and Pointing-Device Connector The two 6-pin connectors at the rear of the system board are for connecting a keyboard and a pointing device (mouse).

  • Page 19: Option Compatibility

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Option Compatibility 2.0 Option Compatibility Subtopics 2.1 Incompatible Adapters 2.2 Hard Disk and Diskette Drives 2.3 Terminators 2.4 Drive and Diskette Compatibility ¦ Copyright IBM Corp. 1991, 1992 2.0 - 1...
  • Page 20 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Incompatible Adapters 2.1 Incompatible Adapters Certain adapters are not compatible when used in the same system. If one of the following adapters is installed, the other adapters listed cannot be installed in the same system unit: Synchronous Data Link Control (SDLC) Adapter 3278 - 3279 Emulation Adapter.
  • Page 21 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Hard Disk and Diskette Drives 2.2 Hard Disk and Diskette Drives The Model 35 computers support the AT-bus hard disk interface on the system board. One 40MB hard disk drive or one 80MB hard disk drive can be installed in the lower bay.
  • Page 22 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Terminators 2.3 Terminators Terminators are not required for the drives used in the Model 35 computers. ¦ Copyright IBM Corp. 1991, 1992 2.3 - 1...
  • Page 23 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Drive and Diskette Compatibility 2.4 Drive and Diskette Compatibility The following provides information concerning the identification of 3.5-inch diskette drives. +------------------------------------------------------------------------+ ¦ Diskette ¦ Identifying ¦ ¦ Drive ¦ Mark ¦...

  • Page 24: Operating Requirements

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Operating Requirements 3.0 Operating Requirements This section describes the operations that occur from the time the system is powered-on until the minimum operating requirements have been met. Subtopics 3.1 Power Supply 3.2 Power-On Self-Test (POST)

  • Page 25: Power Supply

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Power Supply 3.1 Power Supply The power supply switches to either the 100--125 V ac or 200--240 V ac range when the power cord is plugged into an outlet. The ac input is converted to the proper dc operating voltages.

  • Page 26: Power-On Self-Test (Post)

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Power-On Self-Test (POST) 3.2 Power-On Self-Test (POST) The POST is initiated automatically each time the system power is turned The POST is a series of system checks and initializations that verify the correct operation of the system unit.

  • Page 27: System Memory

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR System Memory 3.3 System Memory Subtopics 3.3.1 System-Board Memory 3.3.2 Memory Requirements and Limitations 3.3.3 Memory Errors ¦ Copyright IBM Corp. 1991, 1992 3.3 - 1...
  • Page 28 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR System-Board Memory 3.3.1 System-Board Memory The system has at least 2MB of memory installed at the time of shipment. Additional memory-module kits can be installed in the second and third memory-module connectors on the system board.
  • Page 29 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Memory Requirements and Limitations 3.3.2 Memory Requirements and Limitations When memory is added or removed from the system, run the set configuration program on the Starter Diskette. ¦ Copyright IBM Corp. 1991, 1992...
  • Page 30 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Memory Errors 3.3.3 Memory Errors The system reallocates system-board memory in 1MB blocks for 1MB and 2MB memory-module kits and in 4MB blocks for 4MB and 8MB memory-module kits. If the POST detects a memory error in the first 1MB of system-board memory, the entire 1MB of memory is deactivated and an error code is displayed.

  • Page 31: Specifications

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Specifications 4.0 Specifications Size Width: 360 mm (14.2 in.) Depth: 395 mm (15.6 in.) Height: 115 mm (4.5 in.). Weight Maximum configuration: 10.8 kg (23.8 lb.). Environment Temperature: Power-on: 10° to 35°C (50° to 95°F) Power-off: 10°...

  • Page 32: Special Tools

    Volt-Ohm Meter A meter similar to the Triplett Model 310. (1) Wrap Plug The Tri-Connector wrap plug (IBM part 72X8546) is used during advanced diagnostic tests of serial and parallel ports. PICTURE 2 (1) Manufactured by Triplett Corporation, Bluffton, Ohio 45817, U.S.A.

  • Page 33: Removals And Replacements

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Removals and Replacements 6.0 Removals and Replacements This section contains information on removals and replacements, locations, and grounds. The arrows in the removals and replacements figures show the direction of movement to remove a field replaceable unit (FRU), to turn a screw, or to press a tab to release a FRU.
  • Page 34 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1005 Cover 6.1 1005 Cover CAUTION: Before removing any FRU, power-off the system, unplug all power cords from electrical outlets, and disconnect any interconnecting cables. Turn the cover lock key to the unlock position.
  • Page 35 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1010 Adapters 6.2 1010 Adapters Cover (1005) Note: Before replacing an adapter, note the locations of the adapter and cables. When replacing an adapter, install the replacement adapter in the same slot as the adapter that was removed.
  • Page 36 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1015 Bus Adapter 6.3 1015 Bus Adapter Cover (1005) Adapters (1010). PICTURE 6 PICTURE 7 ¦ Copyright IBM Corp. 1991, 1992 6.3 - 1...
  • Page 37 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1020 Hard Disk Drive 6.4 1020 Hard Disk Drive Warning: Improper shipping or handling can result in permanent loss of all data and formatting on the hard disk drive. Have the user back up all information on the hard disk drive.
  • Page 38 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1025 Diskette Drive and Second Drive Bezel 6.5 1025 Diskette Drive and Second Drive Bezel Cover (1005) Retainer Plate (1065). PICTURE 10 PICTURE 11 To remove the second drive bezel: Locate the two latches at the right end of the cover plate.
  • Page 39 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1030 Cover Lock Assembly 6.6 1030 Cover Lock Assembly Cover (1005) PICTURE 14 ¦ Copyright IBM Corp. 1991, 1992 6.6 - 1...
  • Page 40 When replacing the module, use only Part No. 8509237. of another module could result in ignition or explosion of the module. Replacement modules can be ordered from IBM or IBM Authorized Dealers. Warning: Remove the clock module carefully. Do not bend the pins when removing the clock module.
  • Page 41 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1040 Power Supply 6.8 1040 Power Supply Cover (1005) Control Assembly (1060). Note: Before replacing the power supply, disconnect all power cables extending from the power supply. PICTURE 16 ¦ Copyright IBM Corp. 1991, 1992...
  • Page 42 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1045 Math Coprocessor 6.9 1045 Math Coprocessor Cover (1005) Adapters (1010) Bus Adapter (1015). The system will not operate properly if the math coprocessor is installed incorrectly or is the wrong type for the system.
  • Page 43 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1050 Memory Module Kits 6.10 1050 Memory Module Kits Cover (1005) Adapters (1010). Note: When servicing the two side-by-side memory-module kits, remove the kit in connector 3 first, the kit in connector 2 second, and the kit in connector 1 last.
  • Page 44 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1055 System Board 6.11 1055 System Board Cover (1005) Adapters (1010) Retainer Plate (1065) Diskette Drive (1025) Hard Disk Drive (1020) Control Assembly (1060) Bus Adapter (1015) Math Coprocessor, if installed (1045) Memory Module Kits (1050).
  • Page 45 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1060 Control Assembly 6.12 1060 Control Assembly Cover (1005) Retainer Plate (1065). PICTURE 20 PICTURE 21 ¦ Copyright IBM Corp. 1991, 1992 6.12 - 1...
  • Page 46 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1065 Retainer Plate 6.13 1065 Retainer Plate Cover (1005) Press and hold the retainer-plate latch to the right side and pivot the retainer plate to the front. Remove the retainer plate by lifting and pulling it from the system unit.
  • Page 47 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR 1070 Adapter Guide 6.14 1070 Adapter Guide Cover (1005) Adapters (1010). PICTURE 24 ¦ Copyright IBM Corp. 1991, 1992 6.14 - 1...

  • Page 48: Locations

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Locations 7.0 Locations Subtopics 7.1 Front View 7.2 Rear View 7.3 Interior View 7.4 System Board 7.5 Safety Label ¦ Copyright IBM Corp. 1991, 1992 7.0 - 1...
  • Page 49 IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Front View 7.1 Front View Cover lock Diskette drive bay Diskette drive in-use light Diskette-eject button Hard disk drive bay Hard disk drive in-use light Power-good light Power switch Serial number.

  • Page 50: Rear View

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Rear View 7.2 Rear View Power connector Display connector Serial port Cover screw Parallel port Keyboard connector Pointing-device connector Bolt-down holes. PICTURE 26 ¦ Copyright IBM Corp. 1991, 1992 7.2 - 1...

  • Page 51: Interior View

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Interior View 7.3 Interior View Power supply Hard-disk-drive cable Diskette-drive cable Diskette drive Bus adapter Hard disk drive Adapter guide System board. PICTURE 27 ¦ Copyright IBM Corp. 1991, 1992...

  • Page 52: System Board

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR System Board 7.4 System Board Real-time clock-module connector Pointing-device connector Keyboard connector Parallel port Serial port Display connector Control connector (Control Assembly) Power-supply connector (P2) Power-supply connector (P1) Diskette-drive connector...

  • Page 53: Safety Label

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Safety Label 7.5 Safety Label The following safety label is installed on the top of the power supply. PICTURE 29 Danger label DANGER: DO NOT OPEN. DANGEROUS VOLTAGE INSIDE. ¦ Copyright IBM Corp. 1991, 1992...

  • Page 54: Grounds

    IBM PS/2 Model 35 SX, 35 LS, 35 SLC HMR Grounds 8.0 Grounds Chassis ground Primary ground. PICTURE 30 Notes: ¦ Copyright IBM Corp. 1991, 1992 8.0 - 1...

This manual is also suitable for:

Ps/2 35 lsPs/2 35 slc

Table of Contents