Fluke 9190A Operator's Manual page 116

9190A
Operators Manual
Problem
The instrument does
not turn on.
Blank display. The
instrument powers up
and the fan turns on,
but the display is blank.
The instrument heats or
cools slowly.
The display shows an
abnormal temperature.
The display shows
CUTOUT.
Temperature readout is
not the actual
temperature of the
temperature block or
incorrect temperature
reading on the display.
5-6
Table 5-2. Troubleshooting Chart
Cause: Check the fuses.
Solution: If a fuse blows, it could be because of a power surge or a
component failure. Replace the fuse once. DO NOT replace the fuse with one
of a higher current rating. Always replace the fuse with one of the same rating,
voltage, and type. If the fuse blows a second time, it is likely caused by failure
of a component part.
Cause: Power Cord.
Solution: Check that the power cord is plugged in and connected to the
instrument.
Cause: AC Mains Power.
Solution: Insure the circuit that supplies power to the instrument is on.
Cause: Contrast.
Solution: Check the screen contrast. Toggle the down arrow key to see if the
screen contrast darkens.
If the contrast is not the issue, contact an Authorized Customer Service
Center.
Cause: Scan Rate.
Solution: Check the Scan Rate settings. The Scan Rate may be set at too low
a rate per minute for the current application.
Cause: The sensor is disconnected, open or shorted.
Solution: Please contact a Service Center for further instructions.
Cause: Cutout limit was exceeded.
Solution: If the Metrology Well exceeds the temperature set in the soft cutout
menu, or if it exceeds the maximum operating temperature of the instrument, a
cutout condition occurs. If this happens, the unit enters cutout mode and will
not actively heat or cool until the user issues the command to clear the cutout
or resets the instrument. See "Reset an Over-Temperature Cutout" in
Chapter 2.
Cause: Operating Parameters.
Solution: Check to make sure all operating parameters for the Product,
reference thermometer, and/or probe parameters match the Report of
Certification that was sent with the instrument and/or probe.
Cause: Electrical Interference.
Solution: Look for sources of electrical interference, such as motors, welders,
generating equipment nearby, or ground loops. Try shielding wires, removing
ground loops, or changing location. See "Clamp-on Ferrites" in Chapter 2.
Causes and Solutions