PAC R6000S - Page 71

R6000S Operation Manual: Rev. G
PAC L.P., All Rights Reserved, 2015 Page 69 of 92
Symptom
Probable Cause
Corrective Action
No Response to Standard or
Sample, Continued
Defective High-Voltage Supply
or Cable (Low reading on
High-Voltage PCB)
Replace Cable or Power
Supply.
Defective 12 VDC Power
Supply, fuse or cable
(Low 12VDC)
Replace fuse, cable or Power
Supply as necessary.
Leaks or plugs in flow system
(low flow rates)
Determine source of leaks or
plugs and repair as needed.
See ““Gas Leak Testing”,
Chapter 4”.
Furnaces not up to
temperature
See symptom “Pyro Furnace
Not Heating”, previous pages.
Contaminated Fluorescent
Chamber or sample system
(PMT preamp output greater
than 200mv or odor from
Sulfur chamber)
Clean Fluorescent chamber
and sample system.
No High-Voltage
High-Voltage switch is OFF
Check position of High-
Voltage switch.
Fuse is blown
Check fuses. Replace as
needed.
High-Voltage board is bad
If 12 VDC is supplied to the
High-Voltage board, and there
is no high-voltage output (DC)
when the co-axial cable is
removed from J1 terminals 1
and 2, the high-voltage board
is bad.
High-Voltage board out of
adjustment
Readjust high-voltage output
of PCB Adjust P2 on the high-
voltage board clockwise while
measuring the high-voltage
(DC) output on TP1(-) or
TP(+).
Shorted Preamp
Voltage returns when high-
voltage cable is disconnected
from the detector module.
Replace pre-amp as needed.
Shorted high-voltage cable
Voltage returns when high-
voltage cable is disconnected
from the high-voltage board.
Replace HV Cable.