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IBM PC/2 25, Hardware Maintenance Reference

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IBM PC/2 25 Hardware Maintenance Reference Download Page 19

 5.2.3 Video Graphics Array

  

 This menu allows you to test the display and the control logic on the

 system board.

  

 +----------------------------------------------------------------------------------+

 ¦                                                                                  ¦

 ¦                                                                                  ¦

 ¦                                                                                  ¦

 ¦ VIDEO GRAPHICS ARRAY                                                             ¦

 ¦                                                                                  ¦

 ¦  1 - VGA TEST                                                                    ¦

 ¦  2 - DISPLAY ATTRIBUTES                                                          ¦

 ¦  3 - CHARACTER TESTS                                                             ¦

 ¦  4 - GRAPHICS TESTS                                                              ¦

 ¦  5 - SCREEN PAGING                                                               ¦

 ¦  6 - RUN TESTS 1 THROUGH 5                                                       ¦

 ¦  7 - SYNC TEST                                                                   ¦

 ¦  9 - EXIT TO MAIN MENU                                                           ¦

 ¦                                                                                  ¦

 ¦                                                                                  ¦

 ¦                                                                                  ¦

 +----------------------------------------------------------------------------------+

  

 1 - VGA TEST:  Verifies the video portion of the system board.

  

 2 - DISPLAY ATTRIBUTES:  Shows the following character attributes: normal

 and high intensity, reverse video, blinking, non-display, and 16 colors

 (color displays only).

  

 3 - CHARACTER TESTS:  Shows the following character modes: 40x25, 80x25,

 80x30, and 256 ASCII characters.

  

 4 - GRAPHICS TESTS:  Displays various patterns to test the display

 graphics modes.

  

 5 - SCREEN PAGING:  Tests the video-addressing circuitry.

  

 6 - RUN TESTS 1 THROUGH 5:  Performs tests 1 through 5.

  

 7 - SYNC TEST:  Provides a test signal to allow voltage measurements at

 the video connector.

  

 9 - EXIT TO MAIN MENU:  Returns to the System Checkout menu or continues

 with the next device test.

HMR Diagnostics for Non Micro Channel

Video Graphics Array

¦ Copyright IBM Corp. 1990

5.2.3 - 1

Summary of Contents for PC/2 25

Page 1: ...FRONT PICTURE 1 March 21 1990 Part Number 64F3985 Form Number S64F 3985 00 HMR Diagnostics for Non Micro Channel Copyright IBM Corp 1990 FRONT 1 ...

Page 2: ...r 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 announce such IBM products programming or services in your country Requests for ...

Page 3: ...rvice 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 D...

Page 4: ... Password 5 0 Advanced Diagnostics Diskette 5 1 Special Keys 5 2 Diagnostic Menus 5 2 1 Diskette Diagnostic 5 2 2 Fixed Disk Diagnostic 5 2 3 Video Graphics Array 5 2 4 Video Test 5 3 Utilities 5 3 1 Select an Option Menu 5 3 2 Formatting a Fixed Disk Drive 5 3 3 Format Selection Menu 5 3 4 Error Log 5 4 Setup Program 5 4 1 Set Configuration Menu 6 0 Hardware Maintenance Service Pamphlets 7 0 Disp...

Page 5: ...cro Channel computers for example Models 25 and 30 For diagnostic information about Micro Channel computers for example Models 50 60 70 and 80 refer to the Diagnostic Information for Micro Channel Computers pamphlet HMR Diagnostics for Non Micro Channel Introduction to Diagnostics Copyright IBM Corp 1990 1 0 1 ...

Page 6: ... this pamphlet are intended to be representative rather than exact The shapes of characters on your display screen may appear slightly different from those shown When instructed to Power on the system switch on the power to all externally attached devices such as displays printers or plotters before switching on power to the system unit When instructed to Power off the system switch off the power ...

Page 7: ... One short beep sounds when the POST has successfully completed 3 The system attempts to load an operating system If an operating system is not found either in diskette drive A or on fixed disk drive C if installed an icon is displayed requesting the user to insert a diskette into drive A and press the F1 key to resume operation If the POST cannot be completed successfully an error message is disp...

Page 8: ...ns request the user to take a specific action Subtopics 4 1 Set Time and Date 4 2 Press F1 to Continue 4 3 Insert a Diskette 4 4 Non loadable Diskette 4 5 Power On Password HMR Diagnostics for Non Micro Channel Icons Copyright IBM Corp 1990 4 0 1 ...

Page 9: ... problem are Initial install date and time have not been set The bus adapter has been removed from the system causing the real time clock memory to be lost A defective bus adapter is not able to keep the real time clock memory active This icon is accompanied by the instruction RESUME F1 KEY The user has two alternatives Insert the diagnostic diskette into diskette drive A press the F1 key and run ...

Page 10: ...th other icons The user is advised that an action is required Pressing the F1 key allows the system to resume its operation The service pamphlet refers to this icon as the RESUME F1 KEY message HMR Diagnostics for Non Micro Channel Press F1 to Continue Copyright IBM Corp 1990 4 2 1 ...

Page 11: ...ot found this icon is displayed It instructs the user to insert a diskette containing the operating system into diskette drive A then press the F1 key to resume operation If the F1 key is pressed prior to inserting the diskette the system automatically loads BASIC from the ROM BIOS HMR Diagnostics for Non Micro Channel Insert a Diskette Copyright IBM Corp 1990 4 3 1 ...

Page 12: ...cks diskette drive A to see if a diskette is installed If a formatted diskette is installed but does not contain an executable program this icon is displayed for several seconds and is then replaced by the Insert a Diskette icon HMR Diagnostics for Non Micro Channel Non loadable Diskette Copyright IBM Corp 1990 4 4 1 ...

Page 13: ...mper J13 on the system board from its current position pins 1 and 2 or pins 2 and 3 to the alternate position pin 2 and the present unused pin then power on the system This disables the password portion of CMOS RAM The jumper can be left in this position after service is completed Note If a password is malfunctioning or cannot be disabled the system board must be replaced The user must reinstall t...

Page 14: ... on page 5 3 store the original and use the copy Note Depending on the PS 2 model the diagnostic menus on Advanced Diagnostics diskettes may vary For example the Setup Configuration menu appears only on diskettes with a setup program Subtopics 5 1 Special Keys 5 2 Diagnostic Menus 5 3 Utilities 5 4 Setup Program HMR Diagnostics for Non Micro Channel Advanced Diagnostics Diskette Copyright IBM Corp...

Page 15: ... non critical error and continue with the POST Ctrl P Directs screen output to the printer Ctrl N Cancels output to the printer Ctrl C Stops diagnostic tests and returns to the Installed Devices menu Print Screen Prints what is on the screen useful when the display is unreadable HMR Diagnostics for Non Micro Channel Special Keys Copyright IBM Corp 1990 5 1 1 ...

Page 16: ...are available on the Advanced Diagnostics diskette Subtopics 5 2 1 Diskette Diagnostic 5 2 2 Fixed Disk Diagnostic 5 2 3 Video Graphics Array 5 2 4 Video Test HMR Diagnostics for Non Micro Channel Diagnostic Menus Copyright IBM Corp 1990 5 2 1 ...

Page 17: ...head positioning 2 WRITE READ COMPARE TEST Tests the basic diskette operations including a series of random seeks each seek being followed by a write read and comparison of data 3 VERIFY DISKETTE TEST Verifies data accessing and each sector on the diskette 4 SPEED TEST Measures the time required for one revolution of the diskette 5 DISKETTE CHANGE TEST Tests the diskette change signal and write pr...

Page 18: ...heads then reset to the first cylinder and a random seek test is performed 3 HEAD SELECT Writes data to the test cylinder using each head The data is then read and checked for any errors 4 ERROR DETECTION AND CORRECTION Reads data alters the data and writes the data at the test cylinder A comparison test is made to detect any errors 5 RUN ALL TESTS Runs tests 1 through 4 6 READ VERIFY Reads the en...

Page 19: ...verse video blinking non display and 16 colors color displays only 3 CHARACTER TESTS Shows the following character modes 40x25 80x25 80x30 and 256 ASCII characters 4 GRAPHICS TESTS Displays various patterns to test the display graphics modes 5 SCREEN PAGING Tests the video addressing circuitry 6 RUN TESTS 1 THROUGH 5 Performs tests 1 through 5 7 SYNC TEST Provides a test signal to allow voltage me...

Page 20: ...X25 DISPLAY Fills the screen with a pattern of characters in the 80 by 25 display mode 4 40X25 DISPLAY Fills the screen with a pattern of characters and an intensified white border in the 40 by 25 display mode 5 320X200 GRAPHICS Tests the 320 by 200 graphics mode and displays graphics tests 1 2 and 3 6 640X200 AND 640X480 GRAPHICS Tests the 640 by 200 and 640 by 480 graphics modes 8 SCREEN PAGING ...

Page 21: ...Utilities Subtopics 5 3 1 Select an Option Menu 5 3 2 Formatting a Fixed Disk Drive 5 3 3 Format Selection Menu 5 3 4 Error Log HMR Diagnostics for Non Micro Channel Utilities Copyright IBM Corp 1990 5 3 1 ...

Page 22: ... In a 1 44MB diskette drive the format diskette option formats a 2 0MB diskette to contain 80 tracks with 18 sectors per track 2 COPY DISKETTE Copies the Advanced Diagnostics diskette to another diskette 3 PREPARE SYSTEM FOR MOVING Prepares the fixed disk drive when moving the system 4 SETUP Allows you to check or set the system configuration 5 SET TIME AND DATE Allows you to check or set the time...

Page 23: ...ting system format program Before the customer can transfer information from the backup diskettes to the fixed disk drive the fixed disk drive must be formatted using the operating system format program Have the customer refer to the operating system manual for a description of the fixed disk preparation commands Warning All data on the selected fixed disk drive is destroyed during a format operat...

Page 24: ...ackup all information on the fixed disk drive if possible before proceeding further 1 Power off the system Check that the fixed disk drive cable is securely connected 2 Insert the Advanced Diagnostics diskette into drive A 3 Power on the system 4 Press 0 SYSTEM CHECKOUT then press Enter 5 Depending on the options installed in the system questions about attached devices are displayed on the screen ...

Page 25: ... Enter 9 Press 9 END LOG UTILITIES then press Enter Starting the Test 1 Press 1 RUN TESTS MULTIPLE TIMES then press Enter 2 Select the device you suspect has a failure then press Enter 3 Select the number of times the test is to be run then press Enter 4 Press N WAIT EACH TIME AN ERROR OCCURS Y N then press Enter 5 Follow any instructions on the screen and select all available tests 6 To end RUN T...

Page 26: ...he system configuration can be set through manual selections or done automatically In the automatic configuration the system changes the configuration to what it determines is installed Subtopics 5 4 1 Set Configuration Menu HMR Diagnostics for Non Micro Channel Setup Program Copyright IBM Corp 1990 5 4 1 ...

Page 27: ...n brackets can be changed by using the F5 and F6 keys 3 BACKUP CONFIGURATION Saves the system configuration to a diskette or fixed disk 4 RESTORE CONFIGURATION Sets the system configuration from data created with Backup configuration 5 RUN AUTOMATIC CONFIGURATION Sets the configuration to default values and to what the system determines is installed Note If the configuration is changed during serv...

Page 28: ...re directs you to the Symptom To FRU Index or to the advanced diagnostic tests The Symptom To FRU Index lists symptoms and error numbers along with the most probable FRUs causing the failure Use the Symptom to FRU Index to have the proper replacement FRUs available when you service the failing system The service pamphlets and the Advanced Diagnostics Diskettes are located in the Hardware Maintenan...

Page 29: ...shading may occur near the edges If the screen differs replace the display If the display passes the test replace the system board or display adapter that the display is attached to 8503 8512 8513 8514 2 20 mm 0 08 0 79 in wide on one or both sides 8506 2 35 mm 0 08 1 38 in wide on the top or bottom or both 8507 8508 2 20 mm 0 08 0 79 in wide on the top or bottom or both Printed in the United Stat...

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