IBM PS/2 N51 SX HMR Hardware Maintenance Service Download Page 1

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FRONT

PICTURE 1

October 22, 1991

This pamphlet contains procedures for isolating problems to a FRU, a

Symptom-to-FRU Index, and a parts listing for the IBM Personal System/2

Model N51 SX.

This pamphlet is intended to be used with the IBM Personal System/2

Hardware Maintenance Reference manual (part number 15F2190, form number

S15F-2190-00) and the IBM Personal System/2 Hardware Maintenance Service

manual (part number 15F2200, form number S15F-2200-00).

Part Number 04G5112

Form Number S04G-5112-00

IBM PS/2 Model N51 SX HMS

¦ Copyright IBM Corp. 1991

FRONT - 1

Summary of Contents for PS/2 N51 SX HMR

Page 1: ...el N51 SX This pamphlet is intended to be used with the IBM Personal System 2 Hardware Maintenance Reference manual part number 15F2190 form number S15F 2190 00 and the IBM Personal System 2 Hardware...

Page 2: ...e 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 program...

Page 3: ...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 des...

Page 4: ...wing 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 IBM PS 2 Model N51 SX HMS Trademarks and S...

Page 5: ...nfiguration 5 0 Power Supply 5 1 Checking the AC Adapter 5 2 Checking the Car Battery Adapter 5 3 Checking the Battery Pack 5 4 Checking the Backup Battery 5 5 Checking the Standby Battery 5 6 Checkin...

Page 6: ...the drive startup sequence might have been altered Be extremely careful during write operations such as copying saving or formatting Data or programs can be overwritten if you select an incorrect dri...

Page 7: ...consists of more than one FRU an error code can be caused by any of the FRUs Before replacing the adapter or device remove the FRUs one by one to see if the symptoms change IBM PS 2 Model N51 SX HMS H...

Page 8: ...displayed begin the diagnosis with the first error code The cause of the first error code can result in false error codes being displayed If no error code is displayed see if the error symptom is list...

Page 9: ...s in the drive Power on all external devices Power on the system and check for the following responses 1 All system status indicators appear once for about 1 second Note Some indicators remain on and...

Page 10: ...HE TEST IDENTIFY A FAILURE Note If the test stops and you cannot continue replace the last device tested or If any POST error code appears go to Symptom to FRU Index in topic 10 0 Yes No 011 You may h...

Page 11: ...tion about configuration refer to the Hardware Maintenance Reference manual The protected partition on the hard disk or the Reference Diskette you are using does not contain the code required to suppo...

Page 12: ...ule kit d Hard disk drive fixed disk drive e Communications cartridge f Any adapter and device 3 Power on the system and start the system program 4 Press Ctrl A to run the system checkout Do not confi...

Page 13: ...ystem setup and diagnostic programs can be loaded from this partition by pressing and holding Ctrl Alt Delete and as soon as the cursor moves to the upper right corner of the display pressing and hold...

Page 14: ...kup Restore system programs from the Main Menu 3 Select the 3 Restore the system partition option to load the system setup and utility programs and the customer and advanced diagnostic programs onto t...

Page 15: ...configure the system using the 4 Set configuration from the Reference Diskette make sure the languages of the Reference Diskette and the system must match IBM PS 2 Model N51 SX HMS Setting System Conf...

Page 16: ...Checking the Car Battery Adapter in topic 5 2 Checking the Battery Pack in topic 5 3 Checking the Backup Battery in topic 5 4 Checking the Standby Battery in topic 5 5 Checking the Quick Charger in to...

Page 17: ...5 is greater than 5 ohms between pins 7 and 1 and also between 7 and 3 IS THE RESISTANCE CORRECT Yes No 015 Go to Step 017 016 Go to Checking the Voltage Converter in topic 5 7 If Checking the Voltage...

Page 18: ...system to see if the original problem occurs Replace the last installed option or device when the problem occurs Subtopics 5 1 Checking the AC Adapter 5 2 Checking the Car Battery Adapter 5 3 Checking...

Page 19: ...3 Unplug the AC adapter cable from the system and measure the output voltage at the plug of the AC adapter cable PICTURE 2 Pin Voltage V dc 1 19 0 to 21 0 2 Ground If the voltage is not correct 1 Unpl...

Page 20: ...pter from the cigarette lighter socket then plug it into the socket again 3 Measure the output voltage of the car battery adapter PICTURE 3 Pin Voltage V dc 1 19 0 to 21 0 2 Ground If the voltage is c...

Page 21: ...thout connecting any external power devices 5 Measure the voltage at the connector between terminals 1 and 3 on the voltage converter and note the voltage PICTURE 5 6 Using the AC adapter apply extern...

Page 22: ...from the voltage converter 4 Measure the voltage of the backup battery PICTURE 6 Wire Voltage V dc Red 2 5 to 3 7 Black Ground If the voltage is correct replace the system board If it is not the backu...

Page 23: ...han 4 V dc replace the voltage converter If the voltage is greater than 4 V dc go to the next step 6 Power off the system 7 Reconnect the standby battery to the voltage converter 8 Power on the system...

Page 24: ...r and the other end to the electrical outlet Ensure that the power indicator PICTURE 8 turns on If the power indicator does not turn on check the power cord of the quick charger for proper installatio...

Page 25: ...already in suspend mode unplug the AC adapter and plug it in again to reactivate it 8 Check the voltages of the voltage converter using the following table PICTURE 10 V dc Min V dc Max Connector Pin...

Page 26: ...operly attached to the connectors on the keyboard control card If you suspect a problem with any of the auxiliary input devices replace the device If that does not correct the problem replace the keyb...

Page 27: ...ervice manual If the printer self test runs correctly install a wrap plug on the parallel port and run the advanced diagnostics tests to determine which FRU failed If the advanced diagnostic tests wit...

Page 28: ...detent position 3 Check for the following conditions The screen should be white or light gray with a black margin as described below 8503 8512 8513 8514 2 20 mm 0 08 0 79 in wide on one or both sides...

Page 29: ...MORY TESTS END WITHOUT AN ERROR Yes No 002 Replace the system board 003 DID YOU REMOVE THE MEMORY MODULE KIT IN THE CONNECTOR Yes No 004 Go to Step 007 005 Reinstall the memory module kit in the conne...

Page 30: ...ur error symptoms in the first part of this index 4 Check all power supply voltages before you replace the system board See Power Supply in topic 5 0 5 If an error message is not listed there is a dev...

Page 31: ...cing any FRUs Voltage Converter Speaker No beep with a blinking cursor System Board Communications Cartridge No beep with a normal display Speaker during POST I O Panel Assembly System Board Keyboard...

Page 32: ...and two short beeps System Board One short beep and a blank LCD Panel unreadable or flashing display LCD Inverter with no external display attached System Board LCD Cable One short beep and Diskette...

Page 33: ...any I O Panel Assembly FRUs Incorrect memory size during POST System Board See Memory in topic 9 0 before Memory Module Kit replacing any FRUs System hang up or Intermittent System Board hang up Hard...

Page 34: ......

Page 35: ...00171XX System Board 000172XX System Board 00017300 See Checking the Backup Battery in topic 5 4 System Board Voltage Converter 00017400 Set Configuration Features If Automatic Configuration does not...

Page 36: ...isplay System Board I O Panel Assembly 00860100 00860200 Pointing Device Mouse System Board Numeric Keypad I O Panel Assembly 0086XX00 System Board Pointing Device Mouse Numeric Keypad I O Panel Assem...

Page 37: ...is installed Hard Disk Drive System Board Hard Disk Drive Cable I998XXXX I9990303 Restore the system programs onto See Hard Disk Partition in the system partition topic 4 0 before replacing any Set co...

Page 38: ...s that the quantity is not the same for all machines R Restricted indicates that the part has a restricted availability INDENTURE The indenture is marked by a series of dots located before the parts d...

Page 39: ...12 0 System Overview PICTURE 12 IBM PS 2 Model N51 SX HMS System Overview Copyright IBM Corp 1991 12 0 1...

Page 40: ...G1497 for Switzerland 07G1243 19 Battery Pack Nickel Hydride 07G1244 for Sweden 07G1195 for Benelux 07G1500 for Switzerland 07G1245 20 Bottom Cover 07G1209 21 Cover Memory Module Kit 07G1222 22 Commun...

Page 41: ...nelux 07G1546 for Switzerland 07G1542 Cartridge External Power Pack 07G1541 Keyboard Arabic 07G2954 Belgian 07G1482 Canadian French 07G1490 Danish 07G1483 Dutch 07G1484 French 07G1167 German 07G1168 G...

Page 42: ...Southern Hemisphere 72X7877 Tilt Swivel Stand 68X3061 8514 Color Display without Tilt Swivel Stand 110 120 V ac 75X5945 220 240 V ac Northern Hemisphere 75X5946 220 240 V ac Southern Hemisphere 75X59...

Page 43: ...rk 7 Power Cord System Unit for 14F0087 Israel 8 Power Cord System Unit for 14F0015 Bangladesh Pakistan Sri Lanka South Africa 9 Power Cord System Unit for 14F0051 Switzerland 10 Power Cord System Uni...

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