Toshiba Strata Xii, Strata Xx General Description Manual

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
CHART NO. 6 
INTERCOM FAULTS (cont’d) 
Replace the 
MPRU. 
YES 
NO 
Replace the 
MCAUIAMMU. 
(refer 
to Paragraph 05.01) 
1. Perform the 
2. Reprogram 
YES i 
Replace the 
MCBU #l. 
L-J 
. . 
Replace the 
MCBU #2, if 
equipped [STRATA 
YES Tag the 
defective unit(s) + YES 
and return 
for repair. 
-18- .  

‘. 
CHART NO. 7 
DSS FAULTS 
Go to Page 7 
fault. 
FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
NO 
r-- 
Replace the 
DSS console. 
YES. Tag the 
defective unit 
and return 
for repair. 
I 
23 END  To 
-19-  

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
+ 
I- 
Verify the cable 
by connecting the 
DSS 
console directly to MDSU. 
CHART NO. 7 
DSS FAULTS (cont’d) 
. . 
i 
NOTE: The maximum 
distance between the 
DSS and MKSU is 500 ft. 
24 A WG cable. 
YES Repair or 
replace the 
defective wiring. 
I 
c-i END 
Replace the 
MDSU. Replace the 
MCAUIAMMU. 
(refer to 
Paragraph 05.01) 
,-..- ,__-. .- . . 
0 Lt’li ; 
,I - : ,2:’ ,; iiF.. 
I. Perform the 
___--__---- initialize sequence 
before proceeding. 
YES...

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
CHART NO. 8 
AUTOMATIC DIALING FAULTS 
From 
here from the NO Go to Page 7 
+ to classify 
fault. 
. . 
with Automatic group of stations &/or YES Replace the 
* appropriate 
‘---- 
CRDUW CRDUs as they (per Table E). are installed. 
___--____--- 
NO 
NO 
Replace the 
MCAUIAMMU. 
(refer to 
Paragraph 05.01) YES 
__ ____---____ NO 
v 
host PC8 (MCBU, 
MDSU) for the 
suspect CRDU. 
Remove all 
CRDUs. 
-21-  

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
CHART NO. 8 
AUTOMATIC DIALING FAULTS (cont’d) 
From 
l Replace CRDUs, 
one at a time 
until trouble 
OCC” rs. 
l Replace defective Replace the 
MCAUIAMMU. 
(refer to 
Paragraph 05.01) 
.__.__ __....._ -... _ 
.- 
..7 “?II .?_. .’ ..,,I 
, ll”V 
‘> . --I ,..i ,:, _ 
.,.-:,i.:,c:;,: < 
‘: 0.:. .‘: r.Cl, 3 _. ,‘?.:. .:a 
. . 2.’ 
. . 
I unit. 
1. Perform the 
initialize sequence 
.------_--_______ 
before proceeding. 
2. Reprogram as 
+ 
Call the Service...

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 CHART NO. 9 
MOH, BGM, PAGE & RELAY SERVICE FAULTS 
clear faults with 
Music-on-Hold 
_---_----- 
Background Music, 
here from the 
Fault Classification NO _ Go to Page 7 
to classify 
fault. 
*Verify external 
equipment. 
l Verify programming. 
is nor affective until 
it is secured in 
________-_________ 
working memory 
per Paragraph 
02.06 in Section 
i 
l Replace the 
YES appropriate relay. 
l If NT relay, verify 
W3 strap on MPRU. 
YES 
END 
YES 
t...

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
CHART NO. 9 
MOH, BGM, PAGE & RELAY SERVICE FAULTS (cont’d) 
Replace the 
MINU. 
I Replace the I MCkiUIAMMU. 
(refer to 
Paragraph 05.01) 
NO Call the Service 
Center for 
assistance. 
YES 
/ 
-24- 
*  

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
CHART NO. 10 
SMDR FAULTS 
here from the NO 
NOTES: 
1. Perform the 
initialize 
sequence 
before 
proceeding. 
2. Reprogram 
as required. Go to Page 7 
to classify 
fault. 
NO 
t 
Replace the 
MCAUIAMMU. 
(refer to 
Paragraph 
05.01) 
NO 
Call the Service 
-25-  

FAULT FINDING 
SECTION 100-020-500 
JANUARY 1984 
CHART NO. 11 
OPX FAULTS 
faults. 
here from the Go to Page 7 
to classify 
fault. 
YES 
INO 
Replace the 
MSTU #2. 
7 t 
YES _ Tag the 
_ defective unit(s) 
and return 
for repair. 
. . 
0 END 
-26-  

Replace the 
MXPU #l. 
FAULT FINDING 
SECTION 100-020-500 
JANUARY 
1984 CHART NO. 11 
OPX FAULTS (cont’d) 
YES 
Replace the 
MXPU #2, if 
equipped. 
(STRATA XX only) 
YES 
* 
I NO 
Replace the 
MCBU #l. From 
0x2 
This 
0 Page 
Replace the 
MCAUIAMMU. 
Paragraph 05.01) 
2. Reprogram 
Tag the 
YES 
~ defective unit(s) YES 
and return 
for repair. 
END  To 
+l 
Call the Serwce 
Center for 
assistance. 
-. 
I 
-27-