Toshiba Perception 1 2 User Manual

FAULTFINDING 
SECTION 200-255-500 
MARCH1991 
CHART NO. 8 
NCOU/NEMU/NLSU FAULTS 
I 
Start here to 
clear NCOWNEMW 
NLSU faults. 
t 
I 
- -ge4 
to classify 
circuit(s) disabled by 
NOTE: If any 
NCOU/NEMU/NLSU 
circuit(s) is/are Sri// 
disabled, the fault 
indicates something _ _ - - - -- 
Replace the NCOU/ 
NEMWNLSU PCS 
which has the FALT 
LED indication. 
YES Tag the 
defective unit(s) 
and return 
for repair. 
_-- , 
-18-  

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 9 
NEKUINDKUINSTUINDSU FAULTS 
Fault Classification NO Go to Page 4 
to classify 
fault. 
Either leave the 
circuits disabled 
or enable as 
required. 
~~ electronic/digital telephones 
1 NO 
NOTE: If any NEKUI NDKU/NSTU/NDSU circuit(s) is/are still 
disabled the fault 
indicates somethino 
besides disabled siate. Replace the NEKU/NDKU/ 
NSTUINDSU PCB 
which has the FALT 
LED indication. Verify that all 
electronic/digital telephones...

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 10 
SMDR, TTY, OR MODEM FAULTS 
Start here to 
llT, or MODEM From 
Pages 5, 
7, a 
r?  -------_-______ 
Did 
NO 
l 
* Respective external 
equipment (SMDR. 
TTY, or MODEM) 
is functioning. 
* Baud rate switch on 
LCCU is set correctly. 
* Connections are correct 
Correct any faults. Verify that SMDR is: 
* Defined correctly in the 
DMDR Program. 
* Enabled in the 
DSYS Program. 
* Correctly connected 
between the cabinet 
NO 
YES 
< the fault...

FAULT FINDING 
SECTION 200-255-500 
MARCH1991 
CHART NO. 10 
SMDR, TTY, OR MODEM FAULTS (continued) 
The following instructions 
will cause all calls in 
progress to be disconnected _ _ _ _ _ 
and no new calls will be 
established. 
Do not continue while Press the INIT 
key on the NPRU 
momentarily. (Wait 
a few seconds 
for initalization 
to be completed.) 
TN0 
Press the LOAD 
key on the NPRU 
momentarily. (Wait 
about 30 seconds 
for reloading to 
be completed.) 
YES 
r-c the loading 
cycle completed?...

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 11 
VOICE COMMUNICATION STATION FAULTS 
eouioment. I 
Replace the 
station unit 
(electronic/digital 
telephone/SST). 
located station 
Random Station 
&& 
Concentrate on 
clearing faults 
on stations assigned 
to the same PCB 
location. 
t- 
I 
NOTE: Consult 
fhe System Record 
for station unit/PCB 
assignment. YES 
* Verify the station cable. 
(See Fault Finding 
Paragraphs 
5.02 - 5.04) 
- Correct if faulty. 
-22-  

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 12 
INIT/LOAD KEY FAULTS 
here from the 
Fault Classification Go to Page 4 
to classsify 
fault. 
l 
Replace all the 
unit(s) that were 
reinserted or 
replaced with a 
known good set. NOTE: See 
Figure 2 on 
Page 50. 
Measure all DC 
supply voltages 
on the backplane. 
r 
i 
YES 
NO 
I 
1 Tag the 
defective unit(s) 
and return 
for repair. - Replace original 
units, one at a time. 
- If trouble occurs, 
suspected unit. 
Call the Service 
Center...

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
Start here to 
c/ear MAJOR - 
ALARM faults. 
CHART NO. 13 
MAJOR ALARM FAULTS 
(MAJ LED ON) 
y.YES 
Tag the 
LED on the LCCU defective unit(s) 
and return 
for repair. 
-7 I YES 
I 
-24  

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 14 
CO/DID/TIE TRUNK FAULTS 
Voice Comm. is 
used, this answer 
NOTE: From here 
YES on, the flowchart 
regards Voice Comm. 
faults only. 
NO 
than one NCOW 
NEMUINLSU? NO 
L 
+ 
YES Replace the 
affected NCOW 
NEMWNLSU 
PCB. 
defective unit(s) 
and return NOTE: If more than 
PC& are affected, 
concentrate on one 
PCB. See System 
Record for trunW/ine 
23 END 
-25-  

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 15 
ATTENDANT CONSOLE FAULTS 
Console faults. 
here from the 
Fault Classification 
YES 
i 
- Verify that Attendant 
Console wiring/ 
cabling is correct. 
l Correct any faults. 
Replace the  Replace the 
Attendant  Attendant 
Console.  Console. Replace the 
NPRU. 
Replace the 
NEKU to which 
Attendant Console 
is assigned.  ] is ass7 NOTE: Consult 
System Record 
for station 
assignment. 
 ra.yt: 
/  INTfault?  lower), EMT, or / 
‘“Y-w / FNn...

FAULT FINDING 
SECTION 200-255-500 
MARCH 1991 
CHART NO. 16 
COMMON STATION FEATURE FAULTS 
fault. 
Fault must be 
reclassified. 
Page 4. 
I A This is not a 
common station NO 
t-c Isit  
feature fault. 
fault? 
Return to Page 4. 
/  a wake-up - Verify that the 
/  appropriate 
I 
I NO 
NC-I /h 
I 
-Y YES ‘Y YES the fault 
cleared? 
Fromm I Page 30 
u 
 Page 30 ) 
-27-