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Toshiba Strata E Electronic Key Telephone System Installation And Maintenance Manual
Toshiba Strata E Electronic Key Telephone System Installation And Maintenance Manual
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rHULl rlNUlNLJ SECTION 500-036-500 JANUARY 1988 From Pl 0 Page 7 CHART NO. i POWER FAULTS (cont.) c 1 YES l Reinstall PCBs, one at a time, l Take note of failure if it occurs and replace that PCB. l Be sure to switch power off before a PCB is inserted. I Tag defective PCBfsi and return Tag defective H KSU and return for repair. From P2 0 Page 7 .*- l Check power supply fuses and AC source. l Replace or repair as necessary. NO l Replace power SUPPlY. l Tag defective unit and return for repair. 23 END -8- -r.
CHART NO. 3 FAULT FINDING SECTION 500-036-500 _ JANUARY 1988 From STATION FAULTS here from the Go to Page 4 fault. .*- YES Replace HMDB * on appropriate EKT. Replace HVSU I” EKT. Replace the EKT. To NO YES From Replace Replace appropriate appropriate svcu. SSTU. YES END NO
tAULI t-INUINli SECTION 500-036-500 JANUARY 1988 CHART NO. 4 HKSU FAULTS From Starr here to rlr..- YYP,, a=.,,,*^ cm-- ------ 1 present at EKT? SEPU, SMOU. l Reinstall all YES PCBs, one at w a time. l If trouble occurs, replace suspected PCS. -lO- . .
CHART NO. 5 CO LINE FAULTS From here from the NO Go to Page 4 to classify fault. NO I appropriate HCNB. I YES FAULT FINDING SECTION 500-036-500 _ JANUARY 1988 NOTE: Verify before proceeding: l Correct CO/PBX line operation return for repair. -ll-
s e-a”&, I I,.“#..” SECTION 500-036-500 JANUARY 1988 CHART NO. 6 MOH FAULTS From Start here to here from the Fault Classification NO Go to Page 4 * to cl assi fy .*- fault. l Verify external equipment. NO I Replace the scou/vcou. NO Call the Service Center for assistance. 23 END -12-
YES Replace SEPU or external amplifier. CHART NO. 7 PAGE/BGM FAULTS FAULT FINDING SECTION 500-036-500 _ JANUARY 1988 here from the Fault Classification Go to Page 4 fault. l Verify external equipment. 1 l Verify programming. NOTE: I--------- !“:! Lii!%gx:; J YES Call the Service Center for assistance. Tag defective PC6 and return YES NO Call the Service 4 Center for for repair. assistance. I -13-
I-AULT FINDING SECTION 500-036-500 DECEMBER 1986 CHART NO. 8 DOOR PHONE FAULTS I . .*- here from the Go to Page 4 to classify fault. YES Verify station cables. Call the Service Center for assistance. e3 END
FAULT FINDING SECTION 500-036-500 _ JANUARY 1988 CHART NO. 8 DOOR PHONE FAULTS (cont.) From - \Page 14) \Page 16) l - Program system for DP control unit output output. YES L YES Replace the Door Phone. Call the Service Replace the Door Center for ,NO Phone Control 4 assistance. Unit. i YES Tag defective Door Phone or Door Phone Control Unit and return for repair. I 23 END -15
I l3”l.I I~IImlJII~U SECTION 500-036-500 JANUARY 1988 CHART NO. 8 DOOR PHONE FAULTS (cont.1 work in any other 1 NO j YES YES 1 NO system programmed properly for the YES Program system for Door Phone usage. -16-