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Digital Output
Replacement
Thermo Fisher Scientific
Motherboard
Figure 7–20. Rear Panel Board Connectors
Use the following procedure to replace the digital output board (Figure 7–
18 and Figure 7–19).
Board
Equipment Required:
Digital output board
Nut driver, 3/16-inch
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Remove the I/O expansion board (optional), if used. See the "I/O
Expansion Board Replacement" procedure in this chapter.
3. Disconnect the digital output board ribbon cable from the
motherboard.
4. Using the nut driver, remove the two standoffs securing the board to
the rear panel (Figure 7–19).
Standoffs (2)
I/O Expansion Board
Digital Output Board
▲
Model 43i Trace Level-Enhanced Instruction Manual
Servicing
7-39
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Troubleshooting
