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) Depress the TJ key. LCD: (displays dialed digits) 
5) Refer to the System Record Sheet. LCD: (displays dialed digits) 
Dial W (W = Auto dial code: 10 - 49, per- DATA = 
sonal; 60 - 99, svstem). 
6) Depress the auto dial digits (insert pauses via 
key 
q and flashes via key q . 
7) Depress the m key to place new data in 
memorv. 
8A) Return to Step 2 in order to continue with 
this program 
86) Go to Step 2 in’an:ther program table 
. , . or . . . 
8C) Transfer data into working memory per Par- 
agraph 02.06. LCD: (displays dialed digits) 
All station 13/l 7 LEDs (except 19) go off. 
LCD: DATA PROGRAMMED 
SET LED goes off. 
Station 13117 LED 19 goes off. 
New data is stored, previous data is erased. 
, . 
-88-  
						

							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 
......................................... 1 
DEFECTIVE APPARATUS RETURNS ....................................... 
L 
FLAULT IDENTIFICATION AND ELIMINATION PROCEDURES ................ 
2 
POWER SUPPLY ........................................................ 
2 
STATION CABLE CONTINUITY CHECK 
.................................... 2 
Voltmeter Test .......................................................... 
2 
TABLE B-STATION CABLE CONTINUITY CHECK USING VOLTMETER 
...... 3 
Ohmmeter Test ......................................................... 
3 
TABLE C-STATION CABLE CONTINUITY CHECK USING OHMMETER 
...... 3 
FLOWCHARTS 
CHART NO. 1 
- FAULT CLASSIFICATION ................... .:. ......... 4 .- 
CHART NO. 2 - POWER FAULTS 
...................................... 7 
CHART NO. 3 - STATION FAULTS 
..................................... 9 
CHART NO. 4 - HKSU FAULTS ........................................ 
10 
CHART NO. 5 - CO LINE FAULTS ...................................... 
11 
CHART NO. 6 - MOH FAULTS ......................................... 
12 
CHART NO. 7 - PAGE/BGM FAULTS .................................. 
13 
CHART NO. 8 - DOOR PHONE FAULTS., .............................. 
14 
CHART NO. 9 - SMDR FAULTS ........................................ 
17 
CHART NO. 10 - OPX FAULTS .......................................... 
18 
CHART NO. 11 - OPL FAULTS .......................................... 
19 
CHART NO. 12 - REMOTE MAINTENANCE FAULTS .................... 
20 
ILLUSTRATiON LIST 
FIGURE TITLE PAGE 
1 FLOWCHART SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . 1 
-i-  
						

							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 assumption is made in the flowcharts 
that the fault was discovered and reported by an 
EKT user. All faults, therefore, are classified ac- 
cording to the way they would appear at the EKT. 
02.03 Faults and associated flowcharts in Ta- 
ble A are organized into the following categories: 
TABLE A - FLOWCHARTS 
Flowchart Title 
1 Fault Classification 
2 Power Fauits 
3 Station Faults 
4 HKSU Faults 
5 CO Line Faults 
6 MOH Faults 
7 Page/BGM Faults 
8 
Door Phone Faults 
9 SMDR Faults 
10 
OPX Faults 
11 OPL Faults 
12 Remote Maintenance Faults 
03 FAULT CLEARING PROCEDURES 
03.01 Before attempting to clear any fault, en- 
sure that it is in the system and not caused by as- 
sociated external equipment, such as wiring, 
MOH source, etc. 
IMPORTANT! 
Many system features are assigned, enabled 
or disabled using software entries as de- 
scribedin Programming Procedures. Further, 
with the exception of Programs 5XX - 9xX, 
programming changes are nor effecrive until 
the new data has been secured in working 
memory (see Paragraph 02.06 of Pro- 
gramming Procedures). It is important to 
verify that the system programming is cor- 
rect and functional before troubleshooting 
the hardt-/are. 
FAULT FINDING 
SECTION 500-036-500 
_ JANUARY 1988 
03.02 In new systems, or when the SCCU/VCCU 
PCB has been changed, the initialization procedure 
must be performed before testing. The system data 
stored on the original SCCU/VCCU will be protected . 
from loss by the backup battery on that PCB. There- 
fore, the initialization sequence 
should nor be per- 
formed if the original PCB is reinstalled. 
03.03 Faults in the system aJe cleared by re- 
placing PCBs, EKTs or the power supply, as in- 
structed in the flowcharts. 
03.04 Five symbols are used in the flowcharts, 
which are identified in Figure 1. 
Start and end of a 
flowchart sequence 
Important notes af- 
fecting the fault clear- ---- 
ing procedure 
Question to be an- 
swered YES or NO 
Progression TO or 
FROM another flow- 
chart location. Let- 
ters will denote 
exact entrance or exit 
0 
point 
Statement of a re- 
quired action 
FIGURE 1 -FLOWCHART SYMBOLS 
03.05 The flowcharts are sequentially ar- 
ranged to permit rapid fault localization within the 
system. 
All fault clearing must begin with the 
Fault Classification Flowchart, which is arranged 
in the correct fault locating sequence. 
03.06 The following precautions must be ob- 
served 
when handling PCBs. 
.s 
: 
-l-  
						

							‘~“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 
shipped for repair, the apparatus must be packed 
in a suitable container (the original box is highly 
recommended), as follows: 
4 
b) 
c) Anti-static container for the SSTU, SCOU, 
VCOU and SMOU PCBs. 
Paper container for the VCCU PCB. 
Plastic bags for EKTs, HKSU, etc. 
04.02 NEVER WRITE ON THE APPARATUS IT- 
SELF! Describe the nature of the defect on an in- 
formation tag. Attach the tag. to the front of the 
unit with string (not wire) so the tag can remain 
attached during the testing and repair process. 
04.03 If different and/or additional faults are 
created in the system by substituting a PCB, tag 
and return the substitute PCB as a defective unit. 
05 
FAULT IDENTIFICATION 
and ELIMINATION PROCEDURES 
05.01 The SCCU/VCCU PCB may contain a “soft” 
fault due to static electricity. If it is found defective 
during the fault finding procedures, attempt to clear 
a soft fault prior to returning the SCCU/VCCU PCB 
for repair. The correct procedure for this is to re- 
install the SCCU/VCCU, perform the initialization 
procedure, and then reprogram the system as nec- 
essary to test for the fault. If the fault returns after 
these procedures are performed, tag the defective 
SCCUiVCCU PCB and return it for repair. 06.01 If a power supply fault is suspected, the 
power supply should be removed from the HKSU 
.  after unplugging the power cable. Using a volt- ’ 
meter, check the power supply output voltages at 
the power supply cable connector per the diagram 
below: 
STRATA Vle - 
HPSU 7120 (Pl connector): 
RD 
ELK ERN 
8LK G.ln ELK 
GRN 
+5 5VE 
+12 12% +24- 24VE FG 
. . . 
. . 
nnb 
1 
2 3 4 
5 6 7 8 9 10 
STRATA Se - HPSU 6120 (P7 connector): 
BRN RD BLK 
ELK ELK BLK WH WH 
+12 +5 
5VE 12VE 24VE 
+24 
. . a 
l . ira L-i e 
1 
2 3 4 
5 6 7 8 9 10 
06.02 Voltages should fall within the following 
ranges: 
Nominal Range 
+24 +23.0 - 29.0 
+12 +10.8- 13.2 
i-5 +4.75 - 5.25 
06.03 If voltage checks indicate a power supply 
fault, replace the HPSU with a correctly operating 
unit. Refer to the installation section of this man- 
ual for HPSU installation procedures. 
07 
STATION CABLE CONTINUITY CHECK 
07.01 Voltmeter Test 
07.02 The continuity of the cable run between 
the HKSU and the EKT is checked with a voltmeter 
as follows: 
1) 
2) 
3) NOTE. 
Perform the following at the locations indi- 
cated: 
1. Modular block: Check all station cables. 
2. MDF: Check cable from HKSU to MDF. 
Disconnect the EKT. 
Using a DC voltmeter, measure between the 
wires of the two pairs to verify the readings 
shown in Table B. 
An improper reading indicates an open, 
crossed or shorted wire. 
. . 
-. 
-2-  
						

							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 / R / Red ! 0 
/ 3 / T j White 
/ 1 1 T / Green I 0 I 
/ 3 j A / Blue 1 1 / T i Green ; 0 I 
j 1 I  3 T ! White 1 2 1 T ! Black 1 0 
j 3 / R / Blue / 2 j T / Black / 0 
/ 3 / T / White / 2 I R ; Yellow / 0 
/ 3 j R i Blue I 2 ! R / Yellow / 0 
‘Nominal voltage- within the power supply 
limits of +23.2 - 28.2 VDC while under AC 
power. 
07.10 Ohmmeter Test 
07.11 The continuity of the cable run between 
the HKSU and the EKT is checked with an ohm- 
meter as follows: 
1) Disconnect the EKT. 
2) At the MDF, remove the bridging clips. 
3) Using an ohmmeter, measure the resistance 
between all combinations of the four wires at 
the modular block. All measurements should 
exceed 1 M ohm. 
4) At the MDF, place shorting jumper wires be- 
tween the T and R of pair #1 (green-red), the T 
and R of pair #2 (black-yellow), and the T and R of 
pair #3 (blue-white). 
TABLE C 
STATION CABLE CONTINUITY CHECK 
USING OHMMETER 
FROM TO 
j RESISTANCE 1 
I Pair / Wire / Color 
Pair Wire 
/ Color 
1 I T / Green 2 j T / Black 1Mohm I 
/ 
i 1 / R ! Red i 2 / T / Black / IMohm : 
! 1 / T i Green ! 2 / R / Yell06 / 
3 i R / Blue / 1 / T j Green 1 1Mohm 
3 / T / White 1 2 1 T j Black ! 1Mohm : 
3 / R j Blue I 2 ! T ! Black 1 1M ohm ! 
3 / T 
/ White I 2 i A / Yellow i 1M ohm I 
“NOTE. 
The green-red and black-yellow measure- 
ments should be within 10% of each other. 
5) At the modular block, measure the resistance 
between all wire combinations. The proper 
readings are shown in Table C. 
-3-  
						

							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-