Servicing
Front Panel Board Replacement
Thermo Electron Corporation Model 42i Low Source Instruction Manual 7-45
Front Panel Board
Replacement
Use the following procedure to replace the front panel board (Figure 7-23).
Equipment Required:
• Front panel board
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Remove the three ribbon cables and the two-wire connector from the
front panel board.
3. Pop off the board from the two top mounting studs and remove the
board by lifting it up and off the slotted bottom support.
4. Replace the front panel board by following previous steps in reverse.
Figure 7-23. Replacing the Front Panel Board and the LCD Module
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap must
be worn while handling any internal component.
Ribbon Cables (3)
Two-Wire Connector
Mounting Studs (2)
Bottom Support
LCD Module Screws (2)
Front Panel Board
LCD Module
Retaining Screw
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