Nortel North American DMS-100 Instruction Manual page 444

Testing the operation of ANI and COIN voltages
PWR CRD RING
SHORT GEN
Unit 0 V -48 V
0 0 F
1 0 F
0 -7 -48
1 F ***
0 -7 -48
1 0 F
0 -7 -48
1 -7 -48
0 -7 -48
1 -7 -48
0 -7 -48
1 -7 -48
0 F ***
1 -7 -48
0 -7 F
1 -7 -48
0 -7 -48
1 -7 -48
0 -7 -48
1 -7 -48
0 -7 -48
1 -7 -48
DMS-100 Family Trouble Locating and Clearing Procedures Volume 2 of 2 LET0015 and up
PWR CRD COIN
OPEN COLLECT
+48V +130 V
*** ***
*** ***
+48 +130
*** ***
+48 +130
*** ***
+48 +130
F ***
+48 +130
+48 F
+48 +130
+48 +130
*** ***
+48 +130
*** ***
+48 +130
F ***
+48 +130
+48 F
+48 +130
+48 +130
+48 +130
Trouble locating and clearing procedures
COIN
RETURN Failure most likely to
-130 V occur here:
*** Common test path: TAC,
*** LD-0, LD-0 Cable, LC 0-0,
BIC-0, RG1 Ground
-130 Either 6X53
***
-130 RG1, RG1 Cable
*** (RG1-29, U1-47B), RG1
Ground, BP to BP wiring
(Unit 1 55B-59B to Unit 0
50B-54B), shorted BP pins
(same as BP to BP pins,
plus U0-47B)
-130 RG1, RG1 Cable
*** (RG1-32, U1-48B),
shorted BP pin (U1-48B)
-130 RG1, RG1 cable (RG1-36,
*** U1-48A), shorted BP pin
(U1-48A)
-130 RG1, RG1 cable (RG1-34,
F U1-47A), shorted BP pin
(U1-47A)
*** 6X53s, shorted BP pins
-130 (U0 50B-59B and U1
50B-59B)
*** RG0, RG0 cable (RG0-29
-130 U0-47B), RG0 Ground,
shorted BP pins (U0-47B)
*** RG0, RG0 cable (RG0-32
-130 U0 48B), shorted BP pins
(U0-48B)
*** RG0, RG0 cable (RG0-34
-130 U0 48A), shorted BP pins
(U0-48A)
F RG0, RG0 cable (RG0-36
-130 U0-47A), shorted BP pin
(U0-47A)
-7
(continued)