Jeio tech OV-11 Service Manual page 9

Classification
Temperature Variation Cause
1. Measure temp of the inner chamber using of A exterior temp detector installed in the middle.
Check point
If displayed temp and the temp detector value are different, Modify BIAS Value..
- BIAS Value Modification -
1. Install A exterior temp detector verified inner chamber.
2. After setting the temp value, Wait for the temp that is stabilized.(About 2hours over)
Solution 3. Measure the temp detector installed inner chamber.
4. Press Temp Button six times to modify the Bias value.
5. Modify the BIAS value to set the temp is equal to the temp detector. And then press the ENTER Button to restore the value.
6. Modify the temp value.
Classification
Temperature Variation Cause
1. Check the temp detector position.
Check point
If the temp detector is not in the middle position, It's a malfunction.
- Measuring position change.
Solution 1. The sensor of temp detector positioned in the middle of inner chamber.
2. Fixture and the sensor of temp detector should be intervals minimum 15mm. (Standard Test Guide Reference)
Symptom
Symptom
- 9 -
Service Factor
BIAS Value modification
Service Factor
Measurement Inferiority