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MDE-4334C Atlas Start-up and Service Manual · April 2008
Electronic and Electrical Components
Installing the Atlas 9800 CPU Board (M06333KXXXX)
6
Install the new power supply on the standoffs. Ensure that the P1 connector is closest to the
CPU board and P3 connector is away from the CPU. If the pump model is 9822 or 9823, the
P1 connector is closest to the pump handle assembly.
7
Reinstall the screws removed in step
. For models with plastic standoffs, carefully push the
power supply onto the plastic standoffs before installing the screws.
8
Reconnect the following:
• Cables and AC power to the P3 connector.
• Display Backlight to the P2 connector.
• CPU DC to the P1 connector.
Installing the Atlas 9800 CPU Board (M06333KXXXX)
To install the Atlas 9800 CPU board, proceed as follows:
Always remove AC power from the pump/dispenser before servicing the unit. Failure to
turn off the unit before servicing may result in serious injury or death.
WARNING
1
Check the existing power supply. If the existing supply is not a M07588A00X assembly, it
must be replaced. Refer to
Installing the Atlas 9800 Power Supply (M07588A00X)
on
for details.
2
Ensure that the AC power to the pump/dispenser has been disconnected. Remove the DC cable
from the P1 connector on the power supply.
3
If the pump/dispenser does not have ATC installed, proceed to step
. If the model of the
pump/dispenser is one of the following - 9850A/Q, 9850K, 9852A/Q, 9853A/Q, 9840A/Q, the
ATC support bracket (that holds the ATC black box) must be replaced. Use the kit
M08218K001 to install the new bracket.
4
If the pump/dispenser has an RS-485 or Pulse-out interface board, remove the screws that
secure the interface board and disconnect it from the existing CPU board.
5
Disconnect all cables going to the connectors on the CPU board. Ensure that you take note of
connectors and cables so that they can be re-connected to the correct connector.
6
Unscrew and remove all the screws holding the CPU board. Retain the screws for installing
the M06333KXXXX CPU board.
7
Remove the CPU board. For models with plastic standoffs, carefully unsnap the CPU board
from the standoffs and remove it. Remove any standoffs that may have remained on the CPU
board and place them back into the plate where the board was mounted.
