Environmental Conditions; Disassembly Instructions - Omega Engineering 873C Operator's Manual

ENVIRONMENTAL CONDITIONS
The Models 873C and 873F should be at an ambient temperature of
23°C ±1°C and a relative humidity of less than 80%.
DISASSEMBLY INSTRUCTIONS
WARNING
Turn off the instrument and disconnect the
temperature probe before removing the bottom
cover.
NOTE
When disassembling the instrument, handle the PC
board by the edges. Body oil, dirt, etc can degrade circuit
performance. Keep the PC board clean and free of con-
taminants.
1. Place the unit face down on a bench or other similar surface and
remove the screws from the bottom cover.
2. Separate the bottom cover from the rest of the instrument by
grasping the top of the case (just above the display) and carefully
lifting it away from the display.
3. Remove the battery.
4. Remove the standoff (ST-166-1) that secures the PC board to the
case. The standoff is located in the center of the PC board.
5. Remove the switch cap.
6. Lift the PC board out of the top cover (front panel)
7. Remove the shield.
8. The LCD is held in place on the PC board by a shock resistant
mounting and is assembled as shown in Figure 3.
9. To reassemble the unit, reverse the above procedure.
CAUTION
When removing the LCD from the PC board be careful
not to spread the four retaining hooks on the clear plastic
bezel out too far. The plastic bezel hooks may fracture.