Service and Upgrade Procedures. Compac DCA

Service and Upgrade Procedures


Com FMS Board Replacement (DCA)

The unit is designed to perform many different operations depending on the application. The contents of the cabinets shown in the following procedures may not reflect the actual cabinet you are working on.

Com FMS Board Replacement (DCA)

Tools Required to Replace the FMS Board

Removal

Replacement

Always take anti-static precautions when working with electronic components. i.e., wearing a wristband with an earth strap.

Always take precautions to avoid arcs and short circuits that may damage sensitive components.

 3 mm allen key

 Replacement FMS board.

Check if the board has memory and software chips (consult with

Compac Help Desk to see if you can use existing software or if you also need to install new chips).

1. Turn off the mains switch.

2. Remove any components that may obstruct the easy removal of the board.

Note the locations and connections to the parts removed

3. Unplug the connections to the board.

4. Undo the four machine screws holding the board and remove it.

5. Remove the memory and software chips from the FMS board if they are to be re-used and installed into the replacement FMS board.

1. Replace the Comm FMS board and reconnect.

2. Once a new PCB has been installed in the electronic module install the memory and software chips onto the appropriate sockets on the board.

3. Replace all the components that were removed to access the board.

4. Verify the site pump and comms settings are correct. If the memory and software used are new, the site specific settings such as tanks / groups will

need to be entered. Refer Main Menu Options (see page 42).

5. Set the time and date. Refer to Setting the Clock (see page 48).

Compac Industries Ltd.

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Figure 18: Comm FMS Board connections




Component

Port 2 TTL

Port 3 TTL

Port 4 TTL

IC (5pin)

Port 1 RS232

Port 2 RS232

Port 3 RS232

Port 4 RS232

Port 5 RS232

Port 1 TTL

Wire Colours

Card Reader

General

Purpose

Inputs

Mains Power Red/Black/Green

PIN Pad

Keyboard

Dot Matrix

Display

IBM

Keyboard

Batt Red, Black

Dip Switches

Uses 3 pin plug wired: Phase-red, Neutral-black and Earth-green

Not used

3.6V lithium battery

Use DIP switches to allocate port functions. If replacing a board, make sure

DIP switches match up.


Due to the varied configurations of the units, all combinations of wiring can not be listed here. Take careful note of all connections before removal and use the list below as a guide only. The RS232 ports are RS232 mirrors of the TTL ports.

Comment

Modem / direct host

Audit trail printer or GPRS modem

Tank gauging or Gilbarco comm's

RS232 output of current loop for long distance pump comm's

Connects to Lantronix board for TCPIP communication with

CompacOnline, Netbase or Compac Box.

Used in conjunction with Port 1 TTL

Receipt printer

Power for capacitance keypad.

Use the above table as a guide only as wire colours can change during production and after servicing.



Service and Upgrade Procedures. Compac DCA

Service and Upgrade Procedures

Com FMS Board Replacement (DCA)

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Service and Upgrade Procedures. Compac DCA