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Lucent Technologies Lineage
®
2000 ECS-12 Controller J85501D-2
7 - 2 Troubleshooting
Issue 3 August 1998
Table 7-A: Troubleshooting Table, Backplane Connector (P101)
-48 V Plant
-48 volts - nominal*
-24V Plant
-24 volts - nominal*
+24V Plant
+24 volts - nominal*
Signal
+
-
+
-
+
-
VS-, VS+
C13
C6
C13
C6, C7
VS+, VS-
C6, C7
C13
RBMN48,
RGM
C4
B15
RBMN24,
RGM
C9
B15
RBMP, RGM
C17
B15
DB, RTN (DG)
C12
B17
C12
B17
C12
B17
* Voltage is read with volt meter polarity as shown in the “Signal” line.
Table 7-B: Troubleshooting Table, Ribbon Cable Connector
Backplane to BCC1 (P601-1, P706)
-48 V Plant
-48 volts - nominal*
-24V Plant
-24 volts - nominal*
+24V Plant
+24 volts - nominal*
Signal
+
-
+
-
+
-
VS-, VS+
4
13
4
13
VS+, VS-
13
4
RBMN, RGM
10
8
10
8
RBMP, RGM
32
8
DB, RTN (DG)
12
30
12
30
12
30
* Voltage is read with volt meter polarity as shown in the “Signal” line.
Table 7-C: Troubleshooting Table, Ribbon Cable Connector
BCC1 to LVD/Fuse Board (P708, P502)
-48 V Plant
-48 volts - nominal*
-24V Plant
-24 volts - nominal*
+24V Plant
+24 volts - nominal*
Signal
+
-
+
-
+
-
VS-, VS+
13
14
13
14
VS+, VS-
14
13
RBMN, RGM
29
25
29
25
RBMP, RGM
30
25
DB, RTN (DG)
31
32
31
32
31
32
* Voltage is read with volt meter polarity as shown in the “Signal” line.
Table 7-D: Troubleshooting Table, LVD/Fuse Board
-48 V Plant
-48 volts - nominal*
-24V Plant
-24 volts - nominal*
+24V Plant
+24 volts - nominal*
Signal
+
-
+
-
+
-
RB, RG
P504-2
P507-2
P504-2
P506-2
P504-2
P506-2
RBM, RG
P504-3
P506-2
P504-3
P506-2
P504-3
P506-2
DB, DG
P504-1
P506-1
P504-1
P506-1
P504-1
P506-1
* Voltage is read with volt meter polarity as shown in the “Signal” line.