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Lucent Technologies Lineage
®
2000 ECS-6 Controller J85501D-1
7 - 6 Troubleshooting
Issue 6 August 1998
Figure 7-2.3: 113A2 Control Unit Has Lost Power (continued)
B. 113A2 CONTROL UNIT HAS LOST POWER SHEET 3 OF 3
FROM STEP 26, SHEET 2
27. ARE ALL VOLTAGES
PRESENT?
30. ARE ALL VOLTAGES
PRESENT?
32. CHECK FOR BROKEN WIRES OR LOOSE CONNECTIONS
TO BUS BARS AND REPAIR OR REPLACE AS NEEDED.
33. RECONNECT ALL CABLES. CLOSE FRONT PANELS
OF CONTROLLER AND DC DISTRIBUTION.
31. DEFECTIVE LVD/FUSE
BOARD. REPLACE.
28. DEFECTIVE RIBBON
CABLE. REPLACE.
YES
NO
NO
YES
29. UNPLUG CABLE ASSEMBLIES FROM P504 AND P506
ON LVD/FUSE BOARD AND CHECK FOR VOLTAGES
ON CONNECTORS ACCORDING TO TABLE 7-C