INSTRUMENT MANUAL
VACUUM GAUGE MODEL MM200
160Phone:(215) 947-2500 fax:(215) 947-7464 e-mail:sales@televac.com web site:www.televac.com
MM-200_im REV M
Page 137 of 160
900 TROUBLESHOOTING
901 PRELIMINARY TROUBLESHOOTING
Refer to prior sections of the manual for preliminary troubleshooting help in accordance with Table 9.1.
Table 9.1
200 Initial checkout
300 Installation
400 Operation
500 Programming
600 Communications
700 Calibration
800 Specifications
Next are some possible problems and the suggested solutions.
P - All displays are blank.
S - Check power switch, power source and power cable.
P - Ion gauge reads "OFF" and controlling TC reads 20.0 Torr and is flashing.
S - Normal. Pressure is above the ion-on setting of 10 microns and the
controlling (chamber) TC is above 20.0 Torr.
P - Ion gauge reads "OFF" and Ion-on source TC reads above 10 microns.
S - Normal. Pressure is above the ion-on setting of 10 microns.
P - Display shows readings other than pressure.
S - Press TEST/OP. If MICRONS PER HOUR is lighted, press LEAK RT
pushbutton.
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