Repair Information Product Library

Assembly 445-0634959

Repair Project RP-20717

Class 56XX

Test Fixture PC Test Bed

REVISION RECORD
Date / Affected Pages/Remarks
Nov. 98 / Pub. Rev Level Release
Mar. 2000 / Pub. Rev Level 1 — Revised complete publication
This is a revision controlled document. Refer to your current Test Program Index for the latest revision level.

Contents

General Information 1

Assembly Identification 1

Assembly Modifications 2

TRENT Motherboard Assembly Modifications 2

TRENT Motherboard Modifications 2

Hardware, Software, and Manuals 4

Creating a Test Disk 5

Test Information 6

Power On Self Test (POST) Test Description 6

BIOS Setup Test Description 7

MS DOS 6.22 Startup Menu Test Description 8

RP20717 Trent Functional Test Description 8

Windows 95 Operation Description 9

Test Setup 10

Prepare the Board for Test 10

Test Procedure 12

Inventory Preparations 15

Troubleshooting Information 16

Kernel Troubleshooting 16

Flash BIOS Update 16

POST Error Troubleshooting 17

Password Troubleshooting 20

Functional Test Troubleshooting 21

Hard Drive I/F Test Troubleshooting 21

Repair Support Information 22

TRENT Motherboard Assembly Parts List 22

TRENT Motherboard Parts List 22

Schematic Part Locator 25

Attachments

Logic Schematic Trent Motherboard 009-0011998 A

Copyright © 1998, 2000
By NCR Corporation
Dayton, Ohio U.S.A.
All Rights Reserved Printed in U.S.A.
Proprietary, Unpublished Property of NCR Corporation

REPAIR INFORMATION PRODUCT LIBRARY Trent Motherboard Assembly

General Information

This information product contains the information to test and repair the assembly identified within.

Assembly Identification

The Class 56XX/58XX Trent Motherboard Assembly, shown in Figure 1, has a battery (B1) near the right side of the board, connectors SL1 near the center and six connectors (VGA, PARALLEL1 COM1, COM2, MOUSE, and KEYBD) near the top of the board. The board’s NCR part number is (445-0634959) found on the component side of the board.

Figure 1 Processor Board

Assembly Modifications

The Trent Motherboard Assembly must be modified by completing the following modifications specified in this section.

TRENT Motherboard Assembly Modifications

Assembly part number 445-0632688 must be modified to part number
445-0634959 revision A. Refer to your current Test Program Index for the revision levels of this assembly that can be tested.

Complete the required modifications by following the instructions listed for each part number and revision level that applies. After the modifications are complete, change the part number identification on the assembly to 445-0634959 and the latest revision level as listed in your current Test Program Index.

From Part Number / To Part Number / Authorized By / Required Change / Begin With Step
445-0632688 Rev A / 445-0634959 Rev A / 08DR52068/52805 / Yes / 1

Verify that the TRENT Motherboard is part number 009-0011998.

TRENT Motherboard Modifications

Assembly part number 009-0011962 must be modified to part number
009-0011998 revision A. Refer to your current Test Program Index for the revision levels of this assembly that can be tested.

Complete the required modifications by following the instructions listed for each part number and revision level that applies. After the modifications are complete, change the part number identification on the assembly to 009-0011998 and the latest revision level as listed in your current Test Program Index.

From Part Number / To Part Number / Authorized By / Required Change / Begin With Step
009-0011962 Rev A / 009-0011998 Rev A / 08DR52805 / Yes / 1

Refer to Figure 2 and install a capacitor 008-0043040 (39 pF) between pins R2 and Y5 or between pins T2 and Y5.

Note: Use heat shrink tubing on the leads of the capacitor.

Figure 2

Hardware, Software, and Manuals

The following devices are required to test the board. When an NCR part number is provided, the device is available from Peachtree City Parts Distribution and Repair Center. The last four digits of the part numbers are used in the text for reference.

· One (1) PS/2-type Mouse (877-0151473)

· One (1) Pentium Processor IC (009-0011538)

· Two (2) 16MB (4MX36) 72 Pin 70NS SIMMs (008-0028805)

· One (1) 104 Key PS/2 type Keyboard (008-0077710)

· One (1) Seven Slot Busboard (008-0078207)

· Two (2) AC Power Cords (006-0007164)

· One (1) LED Indicator Board (017-0035850)

· One (1) Power Supply (008-0072280)

· One (1) 14 inch ESVGA Monitor (008-0076559)

· One (1) 540MB Hard Disk Drive (008-0073467)

Note: The hard disk drive must be DOS formatted, partitioned and contain Windows 95 operating system software to be used in the test procedure. Refer to the Test Information section for more information.

· One (1) 1.44MB Flexible Disk Drive (008-0073136)

· One (1) FDC Cable Assembly (017-0037971)

· One (1) IDE HDC Flat Cable (017-0053104)

· Two (2) RS232 Turnaround Plugs (603-9007707)

· One (1) Parallel Port Turnaround Plug (150-0000308)

· One (1) Flash BIOS Disk (Trent Motherboard BIOS Version 6.01)

· One (1) RP20717 Test Disk (Refer to Creating a Test Disk.)

Creating a Test Disk

The first time a test program is used a Test Disk must be created.

Complete the following steps to create a Test Disk(s).

Download the file sw20717.exe from the BBS to the fixed disk drive of your local PC.
Run the file sw20717.exe.

· Running this file creates the directory \eut\sw20717, and then loads the disk files (.dsk) in this directory.

Change to the \eut\sw20717 directory.
Run the file cc20717.bat, and verify that all disk files pass the CRC check.
Run the file mf20717.bat, and follow the displayed instructions to create the Test Disk(s).

· Label each disk with the information displayed at the top of the screen. For example:

EUT SW20717 DISK 1

SwRev 1.XX

Test Information

The test procedure for the assembly contains five sections of testing operations.

· Power On Self Test (POST)

· BIOS Setup

· MS DOS 6.22 Startup Menu

· RP20717 Trent Functional Test

· Windows 95 Operation

Power On Self Test (POST) Test Description

The Power On Self Test (POST) operates each time the Test Bed is switched on or restarted. The POST contains diagnostic programs to test the basic system components.

POST Error

If the POST detects an error, the Test Bed will attempt to display an error message. Error messages are also sent as test codes to address 80H on the processor board.

POST Board

A Power On Self Test (POST) diagnostic board is installed in the PC Test Bed to assist in diagnosing POST error messages. The POST board reads the test code at address 80H and displays the test code on eight LEDs located on the POST board.

BIOS Setup Test Description

The processor board BIOS ROM contains a built in Setup program used for system configuration. The BIOS Setup program displays menus that allows you to view or change the system configuration. The information is then saved in CMOS RAM on the processor board and maintained by a battery backup circuit when system power is turned off.

The BIOS Setup displays menus to view or change system information. Menu operation is shown in a bar at the bottom of the menu window

The following keys are used to control the menu operations:

· Function key F1 executes the BIOS setup program if pressed during the Power On Self Test. The F1 key is used to display help information while in the BIOS Setup.

· The up arrow () and down arrow (¯) keys are used to highlight and select an option in the menu.

· The left arrow (®) and right arrow (¬) keys are used to change a menu selection to a new value.

· The Enter key is used to perform a menu operation once it has been selected.

The BIOS Setup Main Menu is shown below.

Main Menu
System Setup
Fixed Disk Setup
Power Management
Advanced System Setup
Change Password(s)
Boot Options
System Summary
Save Settings
Restore Settings
Load Default Settings
Exit Setup

MS DOS 6.22 Startup Menu Test Description

The MS DOS 6.2X Startup Menu will display three choices:

MS DOS 6.2X Startup Menu
1. Initialize Rtc Cmos
2. Run Diagnostics
3. Exit
Enter a choice: 2 Time Remaining:00

Initialize Rtc Cmos

This choice performs an initialization of the CMOS RAM and real-time-clock (RTC) circuits on the processor board.

Run Diagnostics

This choice runs the RP 20717 Trent Functional Test.

Exit

This choice exits the MS DOS 6.2X Startup Menu and displays the DOS command prompt.

RP20717 Trent Functional Test Description

The RP20717 Trent Functional Test Main Menu is shown below:

RP20717
Trent Functional Test
MAIN MENU
0. EXIT
1. TEST ALL
2. INDIVIDUAL TESTS
3. OPTIONS
4. TEST INFORMATION
Please select from the menu [0,1,2,3,4]

The Main Menu contains five (0-4) options:

· EXIT - This option exits the RP20717 Trent Functional Test and displays the DOS command prompt.

· TEST ALL - This option selects the TEST ALL MENU. From this menu, all tests can be performed in sequence.

· INDIVIDUAL TESTS - This option selects the INDIVIDUAL TEST OPTIONS MENU, and allows you to run tests one at a time.

· OPTIONS - This option selects the OPTION MENU. This menu contains options for selecting the test mode (SOF or COF) and for clearing the Pass/Fail Status of the available tests.

· TEST INFORMATION - This option selects the TEST INFORMATION MENU. This menu allows you to view fault information for the available tests.

AVAILABLE TESTS

The following tests are available in the RP20717 Functional Test:

· Memory Test

· Hard Drive I/F Test

· COM1 Port Test

· COM2 Port Test

· COM Port Interrupt Test

· Parallel Port Test

· Auxiliary Device Test

· Video Test

Windows 95 Operation Description

When the other tests have been performed, you will be instructed to restart the Test Bed and allow it to load and run Windows 95. This application will be loaded from the hard disk drive installed in the Test Bed.

To run this part of the test procedure, the hard disk drive (3467) will need to be formatted and partitioned, and then loaded with the Windows 95 operating system software. The hard disk drive should be prepared on a known good system before using it to test boards with the PC Test Bed.

Test Setup

Complete the following procedures to prepare the test devices and the assembly to be tested.

· Before starting this procedure, verify that the assembly modifications have been completed. Refer to your current Test Program Index for the revision levels of this assembly that can be tested.

Prepare the Board for Test

Complete the following steps to prepare the board to be tested.

Connect the Power Supply (2280) to the Hard Disk Drive (3467) and the Flexible Disk Drive (3136).
Install an LED Indicator Board (5850), also known as the POST board, in connector SL1 of an Seven Slot Busboard (8207) so that the solder side of the board is facing up and the LEDs are towards the upper right corner of the Busboard.

Refer to the following information and verify the correct location of shunt positions.

Switch/Jumper Location / Position / Installed/On/Off
PL8 / Pin 1 to Pin 2 / Installed
PL10 / Pin 1 to Pin 2 / Installed
PL11 / Pin 1 to Pin 2 / Installed
PL22 / Pin 3 to Pin 4 / Installed

Refer to Figure 3 and verify the correct location of shunt positions.

Figure 3 Shunt Settings

Install the Pentium Processor IC (1538) in the socket at location IC34 of the board to be tested. Align pin 1 of the IC with pin 1 of the socket.

Note: It is possible to install this IC incorrectly.

Install two 16MB (4MX36) 72-Pin 70NS SIMMs (8805) into SIMM sockets MM3 and MM4.
Connect the Power Supply (2280) to keyed connector PL26 of the board to be tested.
Attach the 1.44 Flexible Disk Drive (3136) using the FDC Cable Assembly (7971) to connector PL21 of the board to be tested.
Attach the 540MB Hard Disk Drive (3467) using the IDE HDC Flat Cable (3104) to connector PL12 of the board to be tested.

Attach the PS/2 Keyboard (7710) to connector KEYBD of the assembly to be tested.
Attach the PS/2 Mouse (5563) to connector MOUSE of the assembly to be tested.

Install the Parallel Port Turnaround Plug (0308) on connector PARALLEL1.
Install RS232 Turnaround Plugs (7707) on connectors COM1 and COM2 of the board to be tested.
Install the Seven Slot Busboard (8207) into connector PL1 of the board to be tested.
Connect the video cable from the ESVGA Monitor (6559) to connector PL5 of the board to be tested.
Connect an ac Power Cord (7164) to the ESVGA Monitor (6559).
Connect an ac Power Cord (7164) to the back of the power supply.
Connect the other ends of both ac power cords to 120 Vac outlet.

Test Procedure

Complete the following steps to test the assembly on the PC Test Bed.

Install the RP20717 Test Disk in the flexible disk drive of the PC Test Bed.

· If a Test Disk has not been created, refer to the "Creating a Test Disk" section

Turn on the PC Test Bed and verify that the Power On Self Test (POST) is performed.

· If the board does not appear to power up, refer to the “Kernel Troubleshooting” section.

· If the VT BIOS is not version 6.01.26 as shown below, turn off the PC Test Bed and refer to “Flash BIOS Update” in the “Troubleshooting Information” section.

When "Press F1 to Run Setup" is displayed on the monitor screen, press the F1 key on the keyboard.

· If an error number or message is displayed, refer to the "POST Error Troubleshooting” section.

· If the operation halts and "Enter Password" is displayed, refer to the "Password Troubleshooting" section.