Thermo Scientific 420 Series, Operating And Maintenance Manual

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4. Remove the six screws securing the back panel, identified with arrows
in Figure 4-11. Allow the back of the unit to swing down.
5. Remove the four screws identified by the black arrows in Figure 4-12.
Disconnect the ribbon connector from J2 of the microprocessor board
(white arrow). Also remove the two screws from the ribbon cable cover
plate on the base of the cabinet.
6. Remove the wiring connector from J2 of the motor control board
(white arrow) and disconnect (separate) the square connector where
the wiring enters the base of the unit (also identified by a white arrow
in Figure 4-12).
7. Slowly slide the cabinet back and carefully lift it off the base, being
careful of the wiring. It will be necessary to feed the ribbon cable
through the access hole.
Orbital Shaker 4-9 Thermo Scientific
Section 4
Service
Clean Inside After
Major Spill (cont. )
Figure 4-11. Back Panel Screws
Figure 4-12. Screw and Ribbon Locations