Removal and Installation Procedures
Front Panel Display
Circuit Boards
Assembly Removal
The Front Panel Display circuit boards assembly consists of two boards
removed as a unit. These are located at the front of the power supply, just
behind the digital display. See Figure 6-4 for the location of the Front Panel
Display circuit boards. To aid in locating the connectors referred to in this
procedure, see Figure 9-5 in the Diagrams section. The removal of the Master
circuit board and the Slave circuit boards make for easier access to the Front
Panel assembly but is not required. Removal of the top center and top right
chassis rails also make for easier access to the Front Panel Display assembly
but is not required.
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Remember to label each connector as you unplug them.
1.
Unplug J1044 and J1043 from the Front Panel assembly.
2.
Unplug J207, J205, J208, and J206 from the Front Panel assembly.
3. With a pair of pliers, squeeze the tabs on the 5 plastic circuit board fasten-
ers to release the outer circuit board.
4.
Remove the six thread forming screws securing the inner circuit board to
the front panel of the power supply.
5. Lift out the two circuit boards as a unit.
6. Install the Front Panel Display assembly in the reverse order.
PS280 & PS283 Laboratory DC Power Supply Module-Level Service Manual
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