Alfa Network Color Tester, Техническое руководство

Страница: 7 / 45

Technical Manual
– Color Tester
EN ELECTRIC REPAIRING OPERATIONS
7
3.8. REPLACING THE LINUX PC BOARD/DISPLAY UNIT
In case of malfunction replace the PC
– display unit as follows:

open both doors (left and right) of the machine.

Remove the external cover of the LH door by
loosening the 4 M5X16 socket head screws + D5
washers (1) on the panel external corners.

Disconnect the connector between PC and display (4),
as shown in the figure and the power supply wiring of
display (5).

Remove the display by loosening the 4 M3X12 socket
head screws + D3 washers and the relevant nuts (6)
located on the corners of the display. Take care not to
pull the wirings at the back!

Disconnect the connectors located on display rear
side.

To remove the PC board, use a 2.5mm Allen wrench to
loosen the M3x6 screws (7) securing the stud bolts
(integral with the board) to the metal support (8).
Reassembly:

Replace the damaged components and refit the
display and the PC board using the previously
removed screws and nuts; then restore all the electric
connections.