Troubleshooting - Omega 865 User Manual

1. Set up the equipment as shown in Figure 5-1.
2. Turn on the instrument.
3. Perform calibration. refer to Table 5-2 or Table 5-3, as applicable.
4. Verify correct calibration. Refer to paragraph 5.1, performance
accuracy check.
5. Reinstall the bottom cover.
Step Range
A 200°F
B 200°F
C 300°F
D R110 and R112 are interactive. Repeat steps B and C until the results are
repeatable.
Step Range
A 150°C
B 150°C
C 150°C
D R110 and R112 are interactive. Repeat steps B and C until the results are
repeatable.
5.4

TROUBLESHOOTING

The troubleshooting information, along with appropriate schematics and parts lists, are
included to serve as a guide to enable equipment repair. The schematics and parts
lists may vary slightly from actual production units and are to be used as a guide only.
Likewise, the troubleshooting section is a guide only and cannot cover all possible con-
tingencies that may occur.
Each Model 865 and 866 is covered by a 12-month warranty as described on the
inside front cover of this manual. Warranty will be void if the unit shows evidence of
having been tampered with.
TABLE 5-2
MODEL 865 CALIBRATION
Input
19220 ohms
220.8 ohms
43 ohms
TABLE 5-3
MODEL 866 CALIBRATION
Input
7355 ohms
152.8 ohms
41.9 ohms
11
Adjustment
R111
R110 190.0
R112
Adjustment
R111
R110 100.0
R112
Reading
00.0 0 counts
/ counts
300 0 counts
Reading
00.0 0 counts
/ counts
150 0 counts