Teledyne 6200A - Sulfides analyzer - Manual (Page 191)

TAI Model 6200A SO
2
Analyzer Operator Manual, 02164, Rev. G
9.3.5.1 PSM Diagnostic Procedures
The Linear Power Supply board can be tested by checking the DCPS - TEST function on the
front panel. It should read 2500 mV ± 200 mV. If the value is outside this range, individual
output voltages can be tested on connector P3, see Schematic in the Appendix for pinouts.
The Switching Power Supply output can be tested by observing the temperature of the PMT cold
block using the PMT TEMP - TEST function. The temperature should be constant ± 1
o C. The
output voltage can be observed on J10 of the Switch Board. It should be 15VDC ± .5.
The Switch Board can be tested by observing the diagnostic LEDS along the top edge of the
board. The following Table 9-8 describes the typical operation of each LED.
Table 9-8: Power Supply Module LED Operation
No. Function Description
1 Shutter Should energize once every 30 minutes for about 15 sec. On =
shutter closed mode, Off = shutter open mode. The shutter can be
energized manually under SIGNAL I/O of Diagnostic mode. See
Section 9.1.3 and Table 9-4.
2 Zero/Span Valve Should switch ON when CALS button pressed. Span gas input to
analyzer.
3 Sample/Cal Valve Should switch ON when CALS or CALZ buttons are pressed. ON
when in calibrate mode.
4 Spare
5 Spare
6 IZS Heater Should cycle ON-OFF every 20 sec to 2 min. On continuously
until up to temp.
7 Spare
8 Reaction Cell Heater Should cycle ON-OFF every 20 sec to 2 min. On continuously
until up to temp.
9-48