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8.5 System Board

1 Fuse

2 Power-supply connector

3 Real-time clock module connector

4 2KB CMOS RAM extension module connector

5 Diskette drive connector

6 Memory-module-kit connectors

7 80387SX Math Coprocessor socket

8 Speaker assembly connector

9 16-bit expansion slot

10 Video slot (slot 6)

11 Display connector

12 Serial connector

13 Parallel connector

14 Pointing-device connector

15 Keyboard connector.

PICTURE 26

IBM PS/2 Model 65 SX HMR

System Board

8.5 - 1

Содержание PS/2 65 SX

Страница 1: ...FRONT PICTURE 1 March 21 1990 Part Number 64F3992 Form Number S64F 3992 00 IBM PS 2 Model 65 SX HMR FRONT 1 ...

Страница 2: ...ally 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 ...

Страница 3: ...on 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 Corporat...

Страница 4: ...3 3 3 Memory Requirements and Limitations 3 3 4 Memory Errors 4 0 Specifications 5 0 Special Tools 5 1 Volt Ohm Meter 5 2 Wrap Plug 6 0 Service Position 7 0 Removals and Replacements 7 1 1005 Cover 7 2 1010 Cover Lock 7 3 1015 Adapters 7 4 1020 Math Coprocessor 7 5 1025 Speaker Assembly 7 6 1030 Feet 7 7 1035 Front Bezel 7 8 1040 Carrying Handle 7 9 1045 Power Supply 7 10 1050 Diskette Drive 7 11 ...

Страница 5: ...o graphics array VGA Eight expansion slots One auxiliary video connector One slot occupied by the SCSI Adapter Serial port Parallel port Diskette drive controller Keyboard connector Pointing device connector Display connector Fixed disk drive connector Power supply Automatically switches to the 100 125 Vac or the 200 240 Vac range 50 or 60 Hz 225 watts Speaker 101 102 key keyboard Fixed disk drive...

Страница 6: ...1 1 Security Subtopics 1 1 1 Cover Lock 1 1 2 Power On Password IBM PS 2 Model 65 SX HMR Security 1 1 1 ...

Страница 7: ... the cover lock are lost a new cover lock assembly can be ordered see the parts section in the Hardware Maintenance Service pamphlet for the model you are servicing The new assembly contains two keys Use one of the new keys along with a pair of pliers to force the old cover lock open IBM PS 2 Model 65 SX HMR Cover Lock 1 1 1 1 ...

Страница 8: ...ecessary temporarily remove any long adapters in expansion slots 1 to 4 Note Make a note of which expansion slot you are removing the adapter from and where any cables are attached to the adapter You will need this information later when you install the adapters 5 Locate the speaker connector 1 on the system board PICTURE 2 6 Unplug the speaker connector 1 turn it over 180 and plug it back in 7 Re...

Страница 9: ...el port Diskette drive controller Keyboard connector Pointing device connector Subtopics 1 2 1 Microprocessor 1 2 2 CMOS RAM 1 2 3 CMOS RAM Extension 1 2 4 ROM BIOS 1 2 5 VGA 1 2 6 Serial Port 1 2 7 Parallel Port 1 2 8 Diskette Drive Controller 1 2 9 Keyboard Connector and Pointing Device Connector IBM PS 2 Model 65 SX HMR System Board Features 1 2 1 ...

Страница 10: ...ries out instructions The 80386SX Microprocessor is a 32 bit processor with a 16 bit external data bus and operates in two modes real address mode and virtual address protected mode The processor speed is 16 MHz IBM PS 2 Model 65 SX HMR Microprocessor 1 2 1 1 ...

Страница 11: ...uration and security information The real time clock uses the remaining 14 bytes to track the date time and battery level The data stored in the real time clock module is kept active by a built in battery If the battery is depleted replace the real time clock module IBM PS 2 Model 65 SX HMR CMOS RAM 1 2 2 1 ...

Страница 12: ...d 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 program on the user s backup copy of the Reference Diskette If the configuration uses the default settings run the automatic configuration program on the Reference Diskette ...

Страница 13: ...k drive displays and other major input output 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 BIOS IBM PS 2 Model 65 SX HMR ROM BIOS 1 2 4 1 ...

Страница 14: ...n the graphics mode The VGA can support 256 colors or 64 shades of gray at one time Composite video is not supported One expansion slot on the system board extends farther to the rear of the system board than the others This extended expansion slot accommodates video adapters that are designed to interface with the system board VGA Some of these adapters have a display connector of their own The e...

Страница 15: ...ther SERIAL 1 or SERIAL 2 If adapters with serial ports are installed in the system they can be configured from SERIAL 1 to SERIAL 8 The port on the system board can only be SERIAL 1 to SERIAL 2 Note Conflicts occur when using multiple communication lines if two or more lines are addressed the same Select the Set configuration option on the Reference Diskette Select View configuration to verify th...

Страница 16: ...ny device or application that matches the input output capabilities of the port When adapters with additional parallel ports are installed the system can support three different devices each addressed separately as PARALLEL 1 PARALLEL 2 or PARALLEL 3 Note Conflicts occur when two or more devices have the same address Select the Set configuration option on the Reference Diskette Select View configu...

Страница 17: ...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 These signals and voltages can operate two IBM 3 5 inch diskette drives IBM PS 2 Model 65 SX HMR Diskette Drive Controller 1 2 8 1 ...

Страница 18: ... device mouse The keyboard connector is marked with a small keyboard figure molded into the back panel the unmarked connector is for the pointing device The interface logic is the same for both A fuse on the system board protects the system board keyboard and pointing device IBM PS 2 Model 65 SX HMR Keyboard Connector and Pointing Device Connector 1 2 9 1 ...

Страница 19: ...60 70 and 80 computers For more information see the parts section in the Hardware Maintenance Service pamphlet for the model you are servicing Subtopics 2 1 Drive and Diskette Compatibility 2 2 Fixed Disk Drives 2 3 Terminators IBM PS 2 Model 65 SX HMR Option Compatibility 2 0 1 ...

Страница 20: ...on The following addresses the compatibility of diskettes to diskette drives Diskette 720KB 1 44MB Capacity Drive Drive 1 0MB Read Write Read Write 2 0MB Not Compatible Read Write Note For additional information see Diskette Drives and Diskettes in the IBM Personal System 2 Hardware Maintenance Reference General Information pamphlet in this manual IBM PS 2 Model 65 SX HMR Drive and Diskette Compat...

Страница 21: ...r must be used with an SCSI drive For supported fixed disk drives see the parts section in the Hardware Maintenance Service pamphlet for the model you are servicing Model 65 SX fixed disk drives automatically position the read write heads in nondata areas when the system is powered off No special precautions are required regarding parking the heads when moving the computer IBM PS 2 Model 65 SX HMR...

Страница 22: ...d the last drive on the cable must have a terminator The location quantity and appearance of the terminator may vary from drive to drive An identification label or tag usually T RES is attached to the terminator for easy identification Note For additional information see SCSI Devices in the Options and Adapters Micro Channel section of this manual IBM PS 2 Model 65 SX HMR Terminators 2 3 1 ...

Страница 23: ...es 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 3 3 System Memory IBM PS 2 Model 65 SX HMR Operating Requirements 3 0 1 ...

Страница 24: ...t resets system logic The presence of the power good signal indicates that the power supply is operating properly and that the minimum under voltage sense levels have been established This means that all system board power requirements have been met Output Minimum Under Voltage Vdc Sense Level Vdc 5 0 4 5 12 0 10 8 12 0 10 2 The power good signal turns on the green power good light on the front of...

Страница 25: ...ects a noncritical error all testing stops and the microprocessor displays an error code Pressing the F1 key allows testing to continue When the Reference Diskette is in drive A and a noncritical error is detected the system displays the POST error message along with a message generated from the Reference Diskette The Reference Diskette message instructs the user to take a specific action to corre...

Страница 26: ...3 3 System Memory Subtopics 3 3 1 System Board Memory 3 3 2 Memory Expansion Adapters 3 3 3 Memory Requirements and Limitations 3 3 4 Memory Errors IBM PS 2 Model 65 SX HMR System Memory 3 3 1 ...

Страница 27: ...alled in the second memory module connector on the system board The maximum system board memory capacity is 4MB 2MB memory module kits installed in memory module connector 1 and 2 A memory module kit must be installed in memory module connector 1 The system can support a total of 16MB of memory IBM PS 2 Model 65 SX HMR System Board Memory 3 3 1 1 ...

Страница 28: ...3 3 2 Memory Expansion Adapters Memory expansion adapters can be installed in any 16 bit expansion slot IBM PS 2 Model 65 SX HMR Memory Expansion Adapters 3 3 2 1 ...

Страница 29: ...pters can be installed and a memory expansion adapter does not have to filled to capacity before another memory expansion adapter can be installed When memory is added or removed from the system run the set configuration program on the Reference Diskette IBM PS 2 Model 65 SX HMR Memory Requirements and Limitations 3 3 3 1 ...

Страница 30: ...reallocates system board memory in 1MB blocks 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 IBM PS 2 Model 65 SX HMR Memory Errors 3 3 4 1 ...

Страница 31: ... 50 to 110 F Humidity Power on 8 to 80 Power off 5 to 80 Maximum altitude 2134 m 7000 ft Heat Output 1218 British thermal units BTUs per hour 415 watts per hour Electrical Input voltage Sinewave input is required Low Range Minimum 90 Vac Maximum 137 Vac High Range Minimum 180 Vac Maximum 265 Vac Input kilovolt amperes kVA Minimum Configuration as shipped from IBM Approximately 10 kVA Maximum Confi...

Страница 32: ...5 0 Special Tools The following special tools are required to service the Model 65 SX Subtopics 5 1 Volt Ohm Meter 5 2 Wrap Plug IBM PS 2 Model 65 SX HMR Special Tools 5 0 1 ...

Страница 33: ...5 1 Volt Ohm Meter A meter similar to the Triplett Model 310 1 1 Manufactured by Triplett Corporation Bluffton Ohio 45817 U S A IBM PS 2 Model 65 SX HMR Volt Ohm Meter 5 1 1 ...

Страница 34: ...rts The Tri Connector wrap plug replaces the following IBM part 8529228 Printer Adapter wrap plug IBM part 8286126 Serial Port wrap plug IBM part 8529280 Communications Adapter wrap plug IBM part 62X1083 Communications wrap plug 25 pin IBM part 62X1084 Communications wrap plug 9 pin PICTURE 3 IBM PS 2 Model 65 SX HMR Wrap Plug 5 2 1 ...

Страница 35: ...out the cover after the feet have been folded CAUTION The system unit with options may weigh as much as 26 kilograms 58 pounds Be careful when moving or changing the position of the unit To ensure general safety do not attempt to lift any object that you think is too heavy for you IBM PS 2 Model 65 SX HMR Service Position 6 0 1 ...

Страница 36: ...ical outlets and disconnect any interconnecting cables Warning The system board adapters memory modules and the math coprocessor are sensitive to and can be damaged by electrostatic discharge Establish personal grounding by touching a ground point with one hand before touching these units Note An electrostatic discharge ESD strap may be used to establish personal grounding Subtopics 7 1 1005 Cover...

Страница 37: ... 1005 Cover CAUTION Before removing any FRU power off the system unplug all power cords from electrical outlets and disconnect any interconnecting cables PICTURE 4 IBM PS 2 Model 65 SX HMR 1005 Cover 7 1 1 ...

Страница 38: ...7 2 1010 Cover Lock Cover 1005 PICTURE 5 IBM PS 2 Model 65 SX HMR 1010 Cover Lock 7 2 1 ...

Страница 39: ...stall the replacement adapter in the same slot as the adapter that was removed Stored configuration information depends on the location of the adapter If the replacement adapter is installed in a different location run the set configuration program on the user s Reference Diskette to reset the system configuration information PICTURE 6 IBM PS 2 Model 65 SX HMR 1015 Adapters 7 3 1 ...

Страница 40: ... the connector and system board Establish personal grounding by touching a ground point with one hand before touching the math coprocessor The system will not operate properly if the math coprocessor is not installed correctly or is the wrong type for the system Note The Model 65 SX uses a 16 MHz 80387SX Math Coprocessor When replacing the math coprocessor make sure the dot on the coprocessor is a...

Страница 41: ...7 5 1025 Speaker Assembly Cover 1005 PICTURE 8 IBM PS 2 Model 65 SX HMR 1025 Speaker Assembly 7 5 1 ...

Страница 42: ...7 6 1030 Feet Cover 1005 Remove any adapters 1015 that are in the way PICTURE 9 IBM PS 2 Model 65 SX HMR 1030 Feet 7 6 1 ...

Страница 43: ...7 7 1035 Front Bezel PICTURE 10 IBM PS 2 Model 65 SX HMR 1035 Front Bezel 7 7 1 ...

Страница 44: ...7 8 1040 Carrying Handle Front bezel 1035 PICTURE 11 IBM PS 2 Model 65 SX HMR 1040 Carrying Handle 7 8 1 ...

Страница 45: ...7 9 1045 Power Supply Cover 1005 Front bezel 1035 Note Disconnect all cables from the power supply PICTURE 12 IBM PS 2 Model 65 SX HMR 1045 Power Supply 7 9 1 ...

Страница 46: ...0 1050 Diskette Drive Cover 1005 Front bezel 1035 Note Some models require that you unplug the diskette drive cable before removing the drive PICTURE 13 IBM PS 2 Model 65 SX HMR 1050 Diskette Drive 7 10 1 ...

Страница 47: ...7 11 1055 Diskette Drive Support Structure Cover 1005 Front bezel 1035 Diskette drive 1050 PICTURE 14 IBM PS 2 Model 65 SX HMR 1055 Diskette Drive Support Structure 7 11 1 ...

Страница 48: ...e Cover 1005 Front bezel 1035 Notes 1 Remove the terminator on the fixed disk drive in the front bay 2 See Locations for cable connection information 3 When installing SCSI fixed disk drives refer to SCSI Devices in the Options and Adapters Micro Channel section of this manual 4 Disconnect any ground wires and cables from the fixed disk drive PICTURE 15 IBM PS 2 Model 65 SX HMR 1060 Fixed Disk Dri...

Страница 49: ...and cables from the fixed disk drive 2 The fixed disk drive in the rear bay must have the terminator installed Some systems may have two SCSI fixed disk drives in the rear bay On those models the terminator must be installed on the drive closest to the system board For more information refer to SCSI Devices in the Options and Adapters Micro Channel section of this manual 3 See Locations for cable ...

Страница 50: ...one or two fixed disk drives mounted in a bracket 2 Remove the fixed disk drive cable from the cable strap if necessary 3 Two screws on each side one drive 4 Four screws on each side two drives PICTURE 17 IBM PS 2 Model 65 SX HMR 1070 Fixed Disk Drive Bracket 7 14 1 ...

Страница 51: ...075 Fixed Disk Drive Support Structure Cover 1005 Fixed disk drive front bay if installed 1060 Fixed disk drive rear bay 1065 PICTURE 18 IBM PS 2 Model 65 SX HMR 1075 Fixed Disk Drive Support Structure 7 15 1 ...

Страница 52: ...ive support structure if removing the kit in the left connector 1075 Note When servicing the two side by side memory module kits remove the kit in the connector on the right before attempting to remove the kit in the connector on the left A memory module kit must be installed in the connector on the left PICTURE 19 IBM PS 2 Model 65 SX HMR 1080 Memory Module Kits 7 16 1 ...

Страница 53: ... structure 1075 Memory module kits 1080 Notes 1 Disconnect all cables from the system board 2 When a new system board is installed run Restore configuration using the user s Reference Diskette to restore any unique configuration data To reset the date and time run the Set Features utility PICTURE 20 IBM PS 2 Model 65 SX HMR 1085 System Board 7 17 1 ...

Страница 54: ...ure 1070 System board 1085 Note When you remove the four screws that hold the bracket the labels on the outside of the system will be destroyed Replace these labels with new labels after reassembly See the parts section in the Hardware Maintenance Service pamphlet for the system you are servicing PICTURE 21 IBM PS 2 Model 65 SX HMR 1090 Fixed Disk Drive Support Structure Bracket 7 18 1 ...

Страница 55: ...8 0 Locations Subtopics 8 1 Front View 8 2 Rear View 8 3 Interior View 8 4 Internal Cables 8 5 System Board IBM PS 2 Model 65 SX HMR Locations 8 0 1 ...

Страница 56: ...ock 3 Power good light 4 Fixed disk drive in use light 5 Power switch 6 Diskette drive in use light 7 Diskette drive A 8 Diskette eject button 9 Diskette drive B if installed 10 Serial number PICTURE 22 IBM PS 2 Model 65 SX HMR Front View 8 1 1 ...

Страница 57: ...Power cord connector 2 Keyboard connector 3 Pointing device connector 4 Parallel port 5 Serial port 6 Display connector 7 SCSI connector some models 8 Expansion slots PICTURE 23 IBM PS 2 Model 65 SX HMR Rear View 8 2 1 ...

Страница 58: ...A 3 Diskette drive B if installed 4 Front bay fixed disk drives if installed 5 Speaker assembly 6 Expansion slots numbered from bottom 1 to 8 7 Rear bay fixed disk drive 8 Power supply connectors PICTURE 24 IBM PS 2 Model 65 SX HMR Interior View 8 3 1 ...

Страница 59: ...e cables that connect the various devices 1 Power supply 2 Fixed disk drive rear bay 3 Fixed disk drive front bay 4 Diskette drive A 5 Diskette drive B 6 System board 7 Speaker 8 SCSI cable 9 SCSI adapter PICTURE 25 IBM PS 2 Model 65 SX HMR Internal Cables 8 4 1 ...

Страница 60: ...iskette drive connector 6 Memory module kit connectors 7 80387SX Math Coprocessor socket 8 Speaker assembly connector 9 16 bit expansion slot 10 Video slot slot 6 11 Display connector 12 Serial connector 13 Parallel connector 14 Pointing device connector 15 Keyboard connector PICTURE 26 IBM PS 2 Model 65 SX HMR System Board 8 5 1 ...

Страница 61: ...9 0 Safety Grounds 1 Power cord connector 2 Primary ground 3 Chassis ground 4 Expansion slot screws 5 Screws PICTURE 27 Notes IBM PS 2 Model 65 SX HMR Safety Grounds 9 0 1 ...

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