IBM PS/2 90 XP 486 Page 53 Hardware Maintenance Reference Download

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8.5 System Board

1 Power switch/speaker assembly (J2)

2 Battery (BT1)

3 SCSI adapter slot (J1)

4 Adapter slots (J1, J3, J4, and J6)

5 Processor-board slot (J8)

6 Memory-riser-card slot (J11)

7 Memory-riser-card slot (J14)

8 Video-memory connectors

9 Diskette-drive-cable connector (J15)

10 Power-supply connector (J25)

11 Power-supply connector (J26)

12 Power-on password connector (J10)

13 Fan connector (J5).

PICTURE 26

IBM PS/2 Model 90 XP 486 HMR

System Board

¦ Copyright IBM Corp. 1990, 1991

8.5 - 1

Summary of Contents for PS/2 90 XP 486

Page 1: ...FRONT PICTURE 1 Part Number 04G3388 Form Number S14F 2249 02 October 22 1991 IBM PS 2 Model 90 XP 486 HMR Copyright IBM Corp 1990 1991 FRONT 1...

Page 2: ...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 s...

Page 3: ...ograms 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...

Page 4: ...4 0 Reference Diskette 4 1 Installing a New Version of the Reference Diskette 4 2 Making a Backup Copy of The System Partition 4 3 Diagnostic Programs and Information 5 0 Specifications 6 0 Special T...

Page 5: ...MB 1 048 576 bytes random access memory RAM 64MB total system memory capacity Graphics array Extended graphics array XGA with 512KB expandable to 1MB Video graphics array VGA compatible Four expansio...

Page 6: ...1 1 Security Subtopics 1 1 1 Cover Lock 1 1 2 Bolt down Capability 1 1 3 Power On Password IBM PS 2 Model 90 XP 486 HMR Security Copyright IBM Corp 1990 1991 1 1 1...

Page 7: ...r can t be removed without the cover lock 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 for the system...

Page 8: ...erted from below the table or desk into the holes in the base of the system unit There are three holes 1 The distance between the two holes on the right side of the base is 165 mm 6 5 in Use 6 mm bolt...

Page 9: ...n password power off the system and do the following 1 Locate connector J10 on the system board see System Board in topic 8 5 for connector location 2 Move the jumper on J10 so that it connects the ce...

Page 10: ...rial ports 2 Parallel port Diskette drive controller Keyboard connector Pointing device connector Subtopics 1 2 1 Processor Board 1 2 2 CMOS RAM and CMOS RAM Extension 1 2 3 IML POST and BIOS 1 2 4 Gr...

Page 11: ...the system clock the direct memory access DMA controller and the memory controller The system microprocessor is a 32 bit microprocessor that operates in the real address mode or in the virtual address...

Page 12: ...n is kept active by the battery when the system is powered off If the 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 h...

Page 13: ...is not affected when the drive is formatted using the operating system Format command Errors During POST If the POST detects a problem an eight digit error code is displayed Replacing the Default Hard...

Page 14: ...mum of 256 colors or 64 shades of gray is supported in VGA mode Composite video is not supported The graphics array is in the XGA mode only when enabled by the DOS Adapter Interface or video device dr...

Page 15: ...ector The connected device is identified by the system configuration as SERIAL 1 through SERIAL 8 Conflicts occur when two or more devices have the same address Select the Set configuration option fro...

Page 16: ...tches the input output capabilities of the port When adapters with additional parallel ports are installed the system can support these devices each addressed separately as PARALLEL 1 PARALLEL 2 PARAL...

Page 17: ...34 pin cable connector the connector on the system board is a 40 pin cable connector Signals and voltages are supplied through the diskette drive cable that plugs into the connector These signals and...

Page 18: ...vice mouse The keyboard connector is marked on the back panel of the system unit with a small keyboard The pointing device connector is marked with a mouse symbol The interface logic is the same for b...

Page 19: ...2B Yes No Type 1 57 Yes Yes Type 2 59 Yes Yes Type 2 Interleaved Memory An interleaved memory configuration requires matched pairs of memory module kits the size and the speed must be the same The ki...

Page 20: ...s installed in an interleaved configuration the system will operate as described under Memory Type 1 systems however memory errors are handled differently If an error occurs in an interleaved memory c...

Page 21: ...oard expansion slots with the matched memory extension 16 bit adapters 32 bit adapters without the matched memory extension 32 bit adapters with the matched memory extension The fourth 32 bit expansio...

Page 22: ...ette 720KB 1 44MB Capacity Drive Drive 1 0MB Read Write Read Write 2 0MB Not Compatible Read Write For additional information on this subject see Diskette Drives and Diskettes in the IBM Personal Syst...

Page 23: ...ted partition For information about the IML image see IML POST and BIOS in topic 1 2 3 For supported hard disk drives see the parts section in the Hardware Maintenance Service pamphlet for the system...

Page 24: ...s removed SCSI Adapter Terminator requirements for the SCSI adapter vary depending on the configuration of the system and the type of card The location and appearance of the terminators may vary from...

Page 25: ...describes the operations that occur from the time the system is powered on until the minimum operating requirements are met Subtopics 3 1 Power Supply IBM PS 2 Model 90 XP 486 HMR Operating Requireme...

Page 26: ...ting voltages When the system is powered off for 8 seconds or more and then powered on the power supply generates a power good signal that resets system logic The presence of the power good signal tur...

Page 27: ...required Note For more information see Processor Board and Reference Diskette Matrix in the Hardware Maintenance Service pamphlet Subtopics 4 1 Installing a New Version of the Reference Diskette 4 2 M...

Page 28: ...T finishes press Ctrl Alt Del When the cursor moves to the top right corner of the screen press Ctrl Alt Ins 6 If you have a backup copy of the system partition continue with step 7 If you do not have...

Page 29: ...tte drive and follow the instructions on the screen Note If you receive a message indicating that the diskette is full it means that the option files combined with the system programs on the system pa...

Page 30: ...rs pamphlet for information on the following System Programs Selectable Startup Function POST Advanced Diagnostic Programs Presence Test Installed Devices List System Checkout Error Log Formatting IBM...

Page 31: ...80 Power off 8 to 80 Maximum altitude 2134 m 7000 ft Heat Output 1023 British Thermal Units BTUs per hour 300 watts Electrical Input voltage sinewave input is required Low Range Minimum 90 V ac Maxim...

Page 32: ...deo memory modules on the system board See Video Memory on page 7 14 for information on how to install video memory PICTURE 5 Video Memory Removal Tool The video memory removal tool is used to remove...

Page 33: ...FRU power off the system unplug all power cords from electrical outlets and disconnect any interconnecting cables Warning The system board adapters memory modules and the processor can be damaged by...

Page 34: ...7 1 1005 Cover PICTURE 8 IBM PS 2 Model 90 XP 486 HMR 1005 Cover Copyright IBM Corp 1990 1991 7 1 1...

Page 35: ...7 2 1010 Cover Lock Cover 1005 PICTURE 9 IBM PS 2 Model 90 XP 486 HMR 1010 Cover Lock Copyright IBM Corp 1990 1991 7 2 1...

Page 36: ...7 3 1015 Fan Air Baffle Cover 1005 Disconnect any cables necessary for removal PICTURE 10 IBM PS 2 Model 90 XP 486 HMR 1015 Fan Air Baffle Copyright IBM Corp 1990 1991 7 3 1...

Page 37: ...4 1020 Power Switch Speaker Assembly Cover 1005 Disconnect any cables necessary for removal PICTURE 11 IBM PS 2 Model 90 XP 486 HMR 1020 Power Switch Speaker Assembly Copyright IBM Corp 1990 1991 7 4...

Page 38: ...removal Warning When you reinstall the drive you must reinstall the clip on the diskette drive cable Note Drives not designed for the Model 90 might cause intermittent problems PICTURE 12 IBM PS 2 Mod...

Page 39: ...hard disk drive Cover 1005 Disconnect any cables necessary for removal Notes 1 The last drive in the chain requires a terminator 2 See Internal Cables on page 8 4 for cable information 3 Load the IML...

Page 40: ...er or processor board note the slot location Install the replacement FRU into the same slot Stored configuration information depends on the location of the adapter If you must install the replacement...

Page 41: ...ll edges until the processor raises up When you reinstall the processor align the beveled corner 1 with the beveled corner marked on the board PICTURE 15 On the 20 MHz board left the jumper 2 must be...

Page 42: ...7 9 1045 Memory Riser Card Bracket Cover 1005 Disconnect any cables necessary for removal PICTURE 16 IBM PS 2 Model 90 XP 486 HMR 1045 Memory Riser Card Bracket Copyright IBM Corp 1990 1991 7 9 1...

Page 43: ...a ground point with one hand before handling this FRU Note When you add or remove memory run the set configuration program from the hard disk drive Cover 1005 Memory riser card bracket 1045 Disconnect...

Page 44: ...11 1055 Power Supply Cover 1005 Memory riser card bracket 1045 Disconnect any cables necessary for removal PICTURE 18 IBM PS 2 Model 90 XP 486 HMR 1055 Power Supply Copyright IBM Corp 1990 1991 7 11...

Page 45: ...rdinances or regulations When replacing the battery use only Part No 33F8354 Use of another battery could result in ignition or explosion of the battery Replacement batteries can be ordered from IBM o...

Page 46: ...disk drives 1030 Disconnect any cables necessary for removal Note When a new system board is installed run the restore configuration program from the hard disk drive to restore time date and any uniqu...

Page 47: ...ith the video memory kit over the video memory socket 2 With the beveled corner 2 facing the rear of the system carefully align the pins of the memory module with the openings in the socket and firmly...

Page 48: ...0 Locations Subtopics 8 1 Front View 8 2 Rear View 8 3 Interior View 8 4 Internal Cables 8 5 System Board 8 6 Processor Board IBM PS 2 Model 90 XP 486 HMR Locations Copyright IBM Corp 1990 1991 8 0 1...

Page 49: ...drive in use light 3 Power good light 4 Diskette drive in use light 5 Diskette drive Bay A 6 Diskette eject button 7 Bay B 8 Serial number 9 Bay D 10 Bay C PICTURE 22 IBM PS 2 Model 90 XP 486 HMR Fron...

Page 50: ...ctor 3 Pointing device connector 4 Parallel port 5 Serial port 9 pin 6 Cover lock 7 Serial port 25 pin 8 Video port 9 Expansion slots 10 SCSI Terminator 11 Cover screws PICTURE 23 IBM PS 2 Model 90 XP...

Page 51: ...ply system board cable connector P2 8 Power supply system board cable connector P1 9 Power supply cable connectors P3 and P4 10 SCSI internal cable 11 Memory riser card 12 Bay B 13 Bay D 14 Bay C 15 B...

Page 52: ...ces 1 Power supply 2 Power supply cables 3 SCSI internal cable 4 Hard disk drive power cable 5 Hard disk drive 6 Diskette drive 7 Diskette drive cable 8 Fan cable 9 Power switch speaker cable 10 SCSI...

Page 53: ...ard slot J8 6 Memory riser card slot J11 7 Memory riser card slot J14 8 Video memory connectors 9 Diskette drive cable connector J15 10 Power supply connector J25 11 Power supply connector J26 12 Powe...

Page 54: ...MHz boards without Cache is for a 487SX processor with math capability 3 Jumper 20 boards MHz If a 487SX processor labeled 487SX is installed the jumper must be in positions 1 and 2 If a 487SX proces...

Page 55: ...9 0 Grounds 1 Screws 2 Expansion slot screws 3 Chassis ground 4 Safety ground PICTURE 28 IBM PS 2 Model 90 XP 486 HMR Grounds Copyright IBM Corp 1990 1991 9 0 1...

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