GTE Omni Scbs Installation And Maintenance Manual

							System-Wi (Continue 
PROCEDURE FOR DETERMINATION OF CAUSE (FLOWCHART 1) 
IS LAMP LIT? 
NO 
COMMERICAL AC POWER 
r- 
TURN POWER 
SWITCH OFF 
AND ON AGAIN. IS LAMP LIT? VERIFY 
SYSTEM 
OPERATION 
TURN POWER OFF- 
REMOVE POWER CABLE 
AT POWER SUPPLY 
REPLACE AND TURN 
POWER ON AGAIN. 
IS LAMP LIT? 
NO 
REPLACE POWER CABLE 
INSTALL NEW POWER 
SUPPLY AND VERIFY 
SYSTEM OPERATION 
1 YES 
3.48  
						

							PROCEDURE FOR DETERMINATION OF CAUSE (FLOWCHART 2) 
TURN POWER OFF. 
REMOVE ALL CARDS 
FROM FLOWCHART 1. (INCLUDING RGEN) FROM 
) BACKPLANE CONNECTORS. 
RECONNECT POWER CABLE 
AND TURN POWER ON. 
IS LAMP LIT? NO TURN POWER OFF. 
) REPLACE POWER CABLE 
AND TURN POWER 
ON. 
A CARD HAS A FAlliT- 
REINSERT CARDS ONE AT 
A TIME TO IDENTIFY 
DEFECTIVE CARD(S). IS LAMP LIT? TURN POWER OFF. 
REINSERT ALL 
CARDS. 
REPLACE ANY DEFECTIVE 
CARDS. VERIFY TURN POWER ON. 
SYSTEM OPERATION. VERIFY SYSTEM 
OPERATION. 
RESTORE ODDB 
THROUGH LOADING 
OR PROGRAMMING. 
NOTE: TURN POWER OFF WHEN REINSERTING CPM, SWC, MEM, AND RGEN 
CARDS. UNSEATING CPM OR MEM CARDS DELETES ODDB.  
						

							;.’ .--__ 
‘I 
System-Wide Problems (Continued) 
GTE afi!mw SBCS 
PROCEDURE FOR DETERMINATION OF CAUSE (FLOWCHART 3) 
REPLACE CPM, MEM, 
AND SWC CARDS ONE BY 
ONE. IF RUN LAMP ON 
CPM CARD IS LIT. SWC 
SHOULD BE REPLACED. IF 
NOT LIT, CPM SHOULD BE 
REPLACED. 
I YES 
OPERATION. 
. 
RESTORE ODDB 
THROUGH LOADING 
OR PROGRAMMING.  
						

							Multiple Card/Interface 
Sismal Proble 
U 
. ASSOCIATED WITH MORE THAN ONE DEFECTIVE STATION OR TRUNK BEING 
SERVED BY MULTIPLE CARDS. 
. PROBLEMS MAY RESULT FROM: 
- INTERFACE SIGNAL ASSOCIATED WITH A GROUP OF CARDS BEING SHORTED 
BY A DEFECTIVE CARD OR OPENED BY A DEFECTIVE BACKPLANE. 
- DEFECTIVE SWC CARD WHICH IS CONTROLLING THE GROUP. 
. THREE TYPES OF INTERFACE SIGNAL PROBLEMS MAY OCCUR: 
1. SIGNALS ASSOCIATED WITH EACH OF THE SIX INTERFACE CARD GROUPS 
(WHERE EACH ICG HAS ONE INBOUND AND ONE OUTBOUND BUS TO/FROM THE 
SWC). 
2. SIGNALS ASSOCIATED WITH ICG 0 THROUGH 2 AND ICG 3 THROUGH 5 (WHERE 
LOAD SHARING ALLOWS SEVERAL CLOCK AND TIMING SIGNALS FOR 
ALL LINE/TRUNK CARDS TO BE DRIVEN FROM THE SWC BY TWO SEPARATE 
GATES). 
3. SIGNALS USED TO DISTRIBUTE TIME SLOTS AMONG THE CARD SLOTS IN EACH 
ICG (WHERE EACH ICG HAS ITS OWN BUS AND THREE CARD SLOTS, EXCEPT 
ICG 5 WHICH HAS A FOURTH CARD SLOT). 
@ REFER TO FOLLOWING FLOWCHART FOR TROUBLE SHOOTING PROCEDURE FOR 
MULTIPLE CARD PROBLEMS. 
3.51  
						

							. .._ 
d/Interface Signal Problems 
PROCEDURE FOR DETERiVlINATION OF CAUSE 
TRUNK FAILURE). 
REMOVE ONE OF 
AFFECTED LINE/TRUNK 
CARDS. VERIFY 
OPERATION 
OF OTHERS. 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ; NOTE: COLD RESTART DELETES ODDS. ; TURN POWER ON 
INITIALIZE HOT 
RESTART 
RESTART ODDS THROUGH 
LOADING OR 
PROGRAMMING 
(IF COLD START 
HAS PERFORMED). 
I 
3.52  
						

							l ASSOCIATED WITH MORE THAN ONE DEFECTIVE STATION OR TRUNK 
BEING SERVED BY THE SAME LlNE OR TRUNK CARD. 
. PRESCRIPTIVE ACTION MAY INCLUDE: 
- REPLACING THE DEFECTIVE LINE OR TRUNK CARD. 
- CHECKING FOR A LOOSE CONNECTION BETWEEN ICG CONNECTORS 
AND PINS AT THE CABINET. 
3.53  
						

							r .--. 
3.54  
						

							Single Station or Tr n&g Problems 
: 
. ASSOCIATED WITH A SINGLE STATION OR TRUNK. 
. PROBLEMS MAY RESULT FROM: 
- DEFECTIVE LINE/TRUNK CIRCUIT. 
- FAULTY WIRING BETWEEN LINE CIRCUIT AND STATION, OR BETWEEN 
TRUNK CIRCUIT AND EXCHANGE (CO OR HOST PABX). 
- DEFECTIVE STATION INSTRUMENT OR CONNECTING CO/PABX. 
- STATION/TRUNK WAS NOT INSTALLED IN DATA BASE. 
- TRUNK CIRCUIT WAS PROGRAMMED FOR A DIFFERENT SIGNALING 
MODE (GROUND OR LOOP START) THAN THE CENTRAL OFFICE. 
. 
REFER TO FOLLOWING FLOW CHART FOR TROUBLESHOOTING 
PROCEDURE FOR SINGLE STATION OR TRUNK PROBLEMS. 
3.55  
						

							Single Station or Trunk 
!§ 
tinue 
PROCEDURE FOR DETERMINATION OF CAUSE 
TRUNK INSTALLED NO 
IN DATA BASE l INSTALL STATION/ 
TRUNK IN DATA BASE 
WITH CMC COMMAND. 
VERIFY STATION/ 
TRUNK OPERATION. 
f 
PLACE STATION/ 
YES TRUNK IN SERVICE 
h WITH CMC-701. 
VERIFY STATION 
TRUNK OPERATION. 
REPLACE LINE/TRUNK 
CARD SERVING 
DEFECTIVE NO 
(CONSULT WITH 
(CAUSE: FAULTY 
INSTRUMENT OR LOOSE 
3.56  
						

							. RINGING PROBLEMS MAY RESULT FROM: 
- DEFECTIVE RGEN CARD (LIKELY CAUSE IF ALARM LAMP ON CPM 
CARD IS LIT). 
- OUTPUT FROM RGEN CARD BEING SHORTED BY A LINE OR TRUNKI 
CARD. 
- RGEN CARD SET TO PROVIDE SYSTEM WITH DC VOLTAGE FOR 
MESSAGE WAITING SERVICE, BUT MESSAGE WAITING WAS NOT 
SPECIFIED IN THE DATA BASE. 
. REFER TO FOLLOWING FLOWCHART FOR TROUBLESHOOTING 
PROCEDURES FOR RINGING PROBLEMS. 
3.57