Advertisement
Safety Precautions
Troubleshooting
Thermo Scientific
Chapter 6
Troubleshooting
The troubleshooting guide presented in this chapter is designed to help
isolate and identify instrument problems.
Read the safety precautions in Appendix A,
before performing any actions listed in this chapter.
Table 6–1
platform and indicates the checks that you should perform if you
Guide
experience an instrument problem. It also lists 42iQHL specific
troubleshooting information and alarm messages you may see on the
graphics display and provides recommendations about how to resolve the
alarm condition.
Table 6–1. 42iQHL Troubleshooting Guide
Problem
Instrument does not start
(LEDs on front panel do not
come on and display is
blank)
Front panel display does
not start (LEDs on front
panel are off)
Front panel display does
not start (LEDs on front
panel are on)
Front panel display stays
white after power up (LEDs
on front panel are on)
provides general troubleshooting information for the common
Possible Cause
No power
Fuse is blown or missing
Bad switch or wiring
connection to switch
Disconnected ribbon
cable
Defective Display
Unseated or missing
Micro SD card
"Safety, Warranty, and
Action
Verify that the power cord is
plugged in, power is available and
that it matches the voltage and
frequency configuration of the
instrument.
Disconnect power and check
fuses with a volt meter.
Check for 24V @ J9 on the
Backplane board (middle pins).
Check all wiring connections.
Power down and evaluate
connections of display ribbon
cable.
Connect to the instrument using
ePort. Select "Remote Interface".
If normal GUI is displayed,
replace defective display.
Power off, re-seat Micro SD or
install if missing.
42iQHL Instruction Manual 6-1
WEEE"
Advertisement
Chapters
