AB Sciex QTRAP 4500 LC/MS/MS system, System User'S Manual, Page: 24 / 138

Principles of Operation
4500 Series of Instruments System User Guide
24 of 138 RUO-IDV-05-0264-A
Panel Symbols
Table 3-1 shows the mass spectrometer status LEDs.
After the system is turned on, all five LEDs illuminate. The power LED remains lit. The other four
LEDs flash for two seconds and then turn off. The vacuum LED starts flashing. After the correct
vacuum has been achieved this LED remains lit.
Connections
Figure 3-2 shows the location of the mass spectrometer connections, including the locations of
the Reset and Vent buttons and the mass spectrometer switch.
5 Diverter valve Plumb the Diverter Valve on page 32 .
If the optional DuoSpray ™ ion source is installed, then
the diverter valve is replaced with the DuoSpray valve.
The diverter valve is installed below the DuoSpray
valve. For information about the DuoSpray ion source,
refer to the DuoSpray™ Ion Source Operator Guide ,
available from the ion source documentation CD, or
from the AB SCIEX web site, at www.absciex.com
Table 3-1 Panel Symbols
LED Color Name Description
Green Power Lit when the system is powered up.
Green Vacuum Lit when the correct vacuum has been achieved.
Flashing if the vacuum is not at the correct vacuum
(during pumpdown and venting.)
Green Ready Lit when the system is in the Ready state. The system
must be in the Ready state to operate.
Blue Scanning Flashing when the system is acquiring data.
Red Fault Lit when the system encounters a system fault.
Item Description For more information refer to...