Thermo Scientific 5028i, Instruction Manual

Page: 208 / 330

Servicing
Digital Output Board Replacement
7-24 Model 5028
i
Instruction Manual Thermo Fisher Scientific
Figure 7–12. Rear Panel Board Connectors
Use the following procedure to replace the digital output board ( Figure
7–11 ).
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 grounded antistatic wrist
strap must be worn while handling any internal component.
s
1. Turn the 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 (Optional) 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 7–12 ).
5. Pop the digital output board off of the mounting studs and remove
the board.
6. To install the digital output board, follow the previous steps in
reverse.
Digital Output Board
Replacement