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APU-102 Pentium Upgrade Quick Reference

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Software Version 5.0

Upgrade Parts Required

  • LPM-TX Pentium CPU Card with SSD daughter-card (attached)
  • Preloaded with start-up ROM, operating system, application executable, support files and generic parameters.
  • IRQ cable (CBL-151-1124F)

Tools/supplies Required

  • Flat blade screwdriver
  • Laptop computer with communication program such as ProComm, HyperTerminal, etc.
  • Null modem cable or modem cable with null adapter (25-pin DB male on APU-102 end)
  • Antistatic (ESD) wrist strap
  • Individual antistatic bag to fit APU-102 STD bus cards (included)

Optional

  • APU-102 System Operations Manual
  • Communications program users guide
  • TI UART or replacement COM4/COM4A with TI UART
  • UART Replacement document # 385-0002-00

Upgrade Procedure

If your site has maintenance reporting, contact the appropriate department and notify them that you are about to perform the Pentium upgrade on the APU-102. If you are unable to do the parameter dump and load or file transfers, they can do that for you. During the upgrade process, maintenance message will be generated. Maintenance reporting should be disabled until the upgrade is completed. Verify you have all materials required for the upgrade. If possible, check train schedule by the site and schedule the upgrade accordingly to reduce the risk of missed trains.

Note: The parameter dump, file downloads, and preparation of the Pentium card procedures that follow can be done prior to the site visit.

Caution

Follow proper anti-static precautions when handling the boards.


1)  Put ESD wrist strap on wrist and connect to ground lug on outside-bottom of APU.

2)  Remove the LPM-TX Pentium card from its anti-static bag and verify the CMOS battery jumper is properly installed. The jumper may be shipped in the off position to conserve the CMOS battery. The jumper is located on the main board, under the SSD daughter-card. (See Figure 1). Place back into the bag until needed.

3)  Connect a laptop to APU-102 via the local port and get a current parameter dump of the site. Refer to APU-102 System Operations Manual, Section 4, and your communications program user guide if necessary.

4)  Download any site-specific files (VIO.CFG, header files, APUERROR.DAT, flag files, and so forth) using the ZSEND command. (Refer to APU-102 System Operations Manual, Section 4, and your communications program user guide as necessary)

5)  Verify trains that have been recorded have reported to all active sessions.

6)  Power off the APU.

7)  Remove the locking bar. (Loosen the thumbscrew and slide the pin toward the center of the card cage to release)

8)  Remove cables to 486SLC card in card cage.

9)  Remove the 486SLC from the card cage.

10)  Place removed 486SLC card in individual antistatic bag.

11)  Remove the USSD (Universal Solid State Disk) card.

12)  Place removed USSD card in individual antistatic bag and label so that it can be easily determined which site / APU-102 it came from.

13)  Install new LPM-TX Pentium card in card cage slot formerly occupied by the 486SLC card. Note: the Pentium/SSD combo takes two slots. Refer to Figure 4 for recommended card placement.

14)  The Hardware Watchdog MUST be enabled. Remove the cables to the COM4 card and remove it from the card cage. Verify the jumper J18 is installed. Verify UART chip on COM4 is Texas Instruments (TI). Replace if necessary. Refer to the document 385-0002-00.

15)  Remove the IRQ cable (CBL-151-1124E). Install the new IRQ cable supplied (CBL-151-1124F), center connector to TDA 104-J3 and left connector to Pentium-J4. Connect right connector to COM4-J5. (See Figure 3 for IRQ cable routing)

16)  Reinstall cables to COM4.

17)  Connect the 50-pin header of cable #CBL-162-1124B to LPM-TX Pentium card.

18)  Inspect/reset all other cable connections to make sure none have come loose during the upgrade process, especially the IRQ cable.

19)  Reinstall locking bar.

20)  Remove ESD wrist strap.

21)  Power on the APU. The Pentium will take up to 5 minutes to boot up initially. (SYS LED on)

22)  Set the clock on the APU. (Refer to APU-102 System Operations Manual, Section 4).

23)  Upload parameters dumped in step 1. Edit the following parameters that change for 5.0:

Acquisition.Operating.MaxWheelEvents=4096

DiskManager.MaxTrains=100 (if different value selected, perform MR (Master Reset) with reboot option at Step 26

Note: If Inter-track communications is used at the site, edit the appropriate auxiliary data port for 9600 baud as follows: Ports.AUX1PORT.BaudRate=5 or Ports.AUX2PORT.BaudRate=5

24)  Edit any other parameters required for testing.(Save raw files, transaction logs, etc.) Refer to APU-102 System Operations Manual, Section 4, and your communications program user guide as necessary.

25)  Upload any site-specific files downloaded earlier with ZREC. (Refer to APU-102 System Operations Manual, Section 4, and your communications program user guide as necessary)

26)  Perform MR (Master Reset) with reboot option, or perform standard reboot if MaxTrains parameter was not changed.

27)  Log back into supervisory level and back up the current parameters with the “BP” command.

28)  Inspect remainder of AEI site and correct as necessary.

29)  Verify site is operational. Notify your network/communications department and/or Comet Electronics that the APU-102 upgrade is complete. Re-enable maintenance reporting if disabled above. If calling Comet Electronics, please provide site #, location, phone number of site and S/N of APU-102.

Fallback Restoration Procedure

If the APU-102 does not function correctly after performing the upgrade procedure, use the following procedure to return restore the APU-102 to its previous state.

1)  Put ESD wrist strap on wrist and connect to ground lug on outside-bottom of APU-102.

2)  Power down the APU-102.

3)  Remove the locking bar.

4)  Remove the Pentium board USSD and place in individual anti-static bag.

5)  Replace the original 486SLC and USSD cards.

6)  Reinstall locking bar.

7)  Power-up the APU-102 and test.

8)  Remove ESD wrist strap.

9)  Restore maintenance reporting if disabled earlier.


Figure 1: CMOS Jumper



Figure 2: PCM-SSD



Figure 3: IRQ Cable With Pentium CPU
(TDA104 50-pin cable removed for clarity)



Figure 4: APU-102 Recommended card placement

Comet Electronics Service technicians are available M-F, 8:00 am to 4:00 pm Central Time if you require assistance or additional documentation.

(888) 700-4214 or (816) 245-5400

                      OR

e-mail to support@cometind.com

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