Test And Calibration; Troubleshooting; The Display Doesn't Light Up; Service" Appears On The Status Display Line - GE Optica Operator's Manual

7.3 Test and Calibration

The procedures in this section effectively test and/or calibrate the following aspects of the Optica:
•
Startup and power supply voltage
•
Normal sensor operation
•
Front panel display
•
Digital and analog outputs.
The unit has been completely tested and calibrated at the factory, and is ready to plug in and operate. As shipped, it
meets all of our published specifications.
When ordered as a complete hygrometer system with a chilled mirror sensor and cable, it is verified at a number of
points against a dew point system that has been certified by the U.S. National Institute of Standards and Technology
( NIST ). A Certificate of Compliance is supplied with the unit to indicate traceability.

7.4 Troubleshooting

7.4.1 The Display Doesn't Light Up

1. Check the
POWER
2. Check the line cord. Make sure both ends are plugged in and that it is plugged into a proper source of
AC voltage.
3. Check the power supply. Make sure it is connected and has the proper output voltage.
4. Check the fuse. Make sure the proper fuse size is installed. Make sure the fuse is not open.

7.4.2 "Service" Appears on the STATUS Display Line

The text displayed on the
Service
that the mirror surface is contaminated and should be cleaned.
Clean and balance the sensor mirror (refer to "Cleaning and Balancing the Sensor Mirror" on page 75). Next, run the
instrument through a
PACER
balancing procedure, or contact GE.
Optica™ Operator's Manual
switch on the rear panel. Make sure it is
line means service is required. The most frequent problem requiring service is
STATUS
cycle. If, at the end of the cycle, the
.
ON
status appears again, repeat the cleaning and
Service
Chapter 7. Maintenance
81