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