Toshiba Strata E Electronic Key Telephone System Installation And Maintenance Manual

TABLE 62 
PROGRAM #lXX*YY 
AUTOMATIC DIALING PROGRAMMING FROM STATION 17 
(Requires LCD EKT) . 
1) Lock in the SET switch on the HKSU. SET LED on. 
’  Station 13/17 LED 19 on. 
System is in program mode. 
Normal functions halt on station.+3/17. 
LCD: PROGRAM MODE 
2) Depress the m key on station 13/l 7. SPKR LED steady on. 
LCD: PROGRAM NO.?. 
1 3) Dial BiBa on the dial pad. LCD: (displays dialed digits) 
XX = the number of the station(s) to be pro- 
grammed (XX must = 10 for System Auto 
Dial). 
4)...

TOSHIBA SYSTEM PRACTICES 
ELECTRONIC KEY TELEPHONE SYSTEM ’ FAULT FINDING 
SECTION 500-036-500 
_ JANUARY 1988 
.*- 
Strata Se/ Vie 
ELEASE 2  

FAULT FINDING 
SECTION 500-036-500 
JANUARY 1988 
STRATA Se/V& 
FAULT FINDING 
TABLE OF CONTENTS 
PARAGRAPH SUBJECT .*- 
PAGE 
01 
02 
03 
04 
05 
06 
07 
07.01 
07.10 TABLE OF CONTENTS 
.................................................... i 
GENERAL .............................................................. 
1 
FAULT CLASSIFICATION 
................................................. 1 
TABLE A-FLOWCHARTS. 
............................................... 1 
FAULT CLEARING PROCEDURES...

01 GENERAL 
01 .Ol This section describes the maintenance 
procedures used for the diagnosis of faults in this 
electronic key telephone system. Faults are clas- 
sified and then cleared by replacing the apparatus 
and performing operational tests in the se- 
_ quences prescribed by the fault clearing flow- 
charts in Paragraph 05. 
02 FAULT CLASSIFICATION 
02.01 A Fault Classification Flowchart is pro- 
vided to ensure that fault clearing is pursued in a 
logical sequence (Chart No. 1). 
02.02 An...

‘~“LI rllYlJllYu 
SECTION 500-036-500 
JANUARY 1988 
DO NOT: 
06 POWER SUPPLY 
0 
l 
l 
- 0 
Drop a PCB. 
Stack one PCB on top of another. 
Handle a PCB without discharging any static 
electricity from your person by touching the 
grounded HKSU. 
Touch PCB contacts with your fingers. 
IMPORTANT! 
If the fault is not cleared by substituting a 
PCB, the original PCB must be reinstalled in 
the HKSU before trying another PCB. 
04 
DEFECTIVE APPARATUS RETURNS 
04.01 When a defective system apparatus is...

FAULT FINDING 
SECTION 500-036-500 
_ JANUARY 1988 
4) For the MDF-to-EKT cable, a more precise 
check is made using an ohmmeter. 
TABLE B 
STATION CABLE CONTINUITY CHECK 
USING VOLTMETER 
FROM TO VOLTAGE’ / 
I 
Pair Wire 
Color Pair Wire j Color 
1 T / Green 2 T ) Black 24 
1 R 
! Red 2 T 1 Black / 24 
I 
1 T I Green 2 I R Yellow 24 1 
1 R / 1 , 
Red 2 j R Yellow 1 24 
1 T / Green 1 / R Red / 0 
1 2 j T Red :2 Rj Yellow / 0 
3 / T White 3 R Blue I 0 
3 
1 T White 1 R i Red 0 
/ / 
/ 3 1 R ! 
Blue 1 1 /...

FAULT FINDING 
SECTION 500-036-500 
JANUARY 1988 
To 
I YES 
CHART NO. 1 
FAULT CLASSIFICATION 
Please read 
General Ma~nteoance 
Information before 
proceeding. 
b 
START 
t 
Start here to 
clear faults in 
Strata Se, VI,. 
.*- 
bClLLI GILL”,, 
breakers and 
dower tndlcarors. 
To 
NO 
To To 
YES 
NO  

CHART NO. 1 
FAULT CLASSIFICATION 
(cont.) 
From 
To 
YES 
1 NO 
To 
1 NO 
To 
YES 
To 
YES 
FAULT FINDING 
SECTION 500-036-500 
_ JANUARY 1988 
NO 
To 
c2 
G 
Page 6 
-5  

rAULl HNlJINLi 
SECTION 500-036-500 
JANUARY 1988 
CHART NO. 1 
FAULT CLASSIFICATION (cont.) 
From 
To 
SMDR fault? 
To 
1 NO 
-1 NO 
.*- 
J NO 
Fault should have 
been classified. 
Return to Page 4. 
-6-  

CHART NO. 2 
POWER FAULTS FAULT FINDING 
SECTION 500-036-500 
_ JANUARY 1988 
From 
Go to Page 4 
END 
7 
l Replace HKSU. l Tag defective 
HKSU and return 
for repair. 
the fault 
> < the fault 
cleared? cleared? 
IYES 
I 
l Power switch off. 
. Remove PCBs 
y.cMeAp,t;he SMAUI 
l Operate circuit 
breakers. 
l Power switch on, output at power 
Supply terminals Verify cable 
connectors 
between power 
suopiy and HKSU. 
To 
d Pl 
Page 8 
23 END 
-7-