MKS 250E - Troubleshooting

Troubleshooting Cha
p
ter Five: Maintenance and Troubleshootin
g
42
Troubleshooting
To locate the cause of trouble, follow steps 1, 2, and 3 in sequence.
1. Check for obvious problems such as power off, open fuse, defective line cord, input
power failure, or loose connections.
2. Check all control settings.
FRONT PANEL
Power ON (Power light should be on)
Set Point Switch on INT. Control at proper level
Input Select As required (normally 10 V)
Phase As required (normally 1 to 5 sec.)
Gain As required (normally 100%)
Mode AUTO or EXT
INSIDE
Nor/Rev Normal
REAR PANEL
115/230 As required by AC power supply
3. Determine the probable cause from the Troubleshooting Chart (refer to Table 11,
page 43).