Alfa Network Color Tester, Техническое руководство

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Technical Manual
– Color Tester
EN ELECTRIC REPAIRING OPERATIONS
5
3.4. REPLACING THE POWER SUPPLY UNITS
In case of an electric fault in one or more power supply units of the machine, proceed as follows to replace them:

make sure the machine is disconnected from the
power supply as described in para. 2.0.3.

To reach the power supply unit compartment remove
the rear panel as described in paragraph 2.1.1. to
reach the electric panels, then remove the internal
protections as described in paragraph 2.1.2.

Disconnect the wiring between the power supply unit to
be replaced and the rest of the machine.

Remove the power supply unit by fitting a small flat
screwdriver in the suitable retaining tab and remove
the unit from the DIN bar.

Fit the new power supply unit manually on the DIN bar.

Reconnect the power supply unit to the wiring
according to the attached wiring diagram.

Reposition the previously removed protection panel.
WARNING: use only genuine spare parts supplied by the
manufacturer.
3.5. REPLACING THE MAX BOARD
To replace the MAB boards, proceed as follows:

make sure the machine is disconnected from the
power supply as described in para. 2.0.3.

Remove the rear panel as described in paragraph
2.1.1. to reach the electric panels, then remove the
internal protections as described in paragraph 2.1.2.

Disconnect the power supply and signal cables from
the board (1) to be replaced.

Remove the board by releasing it from the plastic
supports on its corners.

Insert a new board on the supports having care not to
damage its components.
WARNING: Use an already programmed board or the
suitable programmer to install the correct firmware. To
reprogramme the boards refer to chapter 4.

Restore the electric connections.
MAKE SURE THAT THE TERMINATION JUMPER ON
CN7 (2) IS PRESENT ON THE NEW BOARD.