Lucent Technologies Lineage 2000 ECS-12U - Figure 7-5: Meter out of Calibration

Lucent Technologies Lineage
®
2000 ECS-12U Controller J85501E-2
7 - 10 Troubleshooting Issue 3 July 1998
Figure 7-5: Meter Out of Calibration
E. METER OUT OF CALIBRATION
SHEET 1 OF 1
1. TEST JACKS
INDICATE VOLTAGE?
ASSUMPTIONS - DISPLAY IS LIT
- PLANT IS OPERATING NORMALLY WITH NO ALARMS
- VOLTAGE DISPLAY DISAGREES WITH THAT MEASURED
AT FRONT PANEL TEST JACKS BY MORE THAN THE
COMBINED TOLERANCES OF THE EXTERNAL METER
AND 0.05 PERCENT.
2. DOES DISPLAY
INDICATE VOLTAGE?
5. CAN ADJUSTMENT
BE MADE?
END
3. PROBABLE CAUSE:
DEFECTIVE 113B
CONTROL UNIT.
REPLACE.
NO
NO
NO
YES
YES
YES
4. LOCATE R407
POTENTIOMETER ON
DISPLAY BOARD. ADJUST
UNTIL DISPLAY AGREES
WITH TEST JACKS.