Toshiba Perception 1 2 User Manual
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FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 1 FAULT CLASSIFICATION (continued) I NO it an Attendant Access to Services), Fault should have been classified. Return to Page 4. YES YES indications appear on I NO
FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 1 FAULT CLASSIFICATION (continued) NOTE: From here on, the flowchart i regards Voice Comm. faults only. 1 ’ Fault should classified. Return To Attendant Console 1 NO To Page 22 u -8-
FAULT FINDING SECTION 200-255-500 MARCH1991 CHART NO. 2 LOADING FAULTS here from the Fault Classification Go to Page 4 to classify fault. YES NO Replace the IS NPRU. YES the fault cleared? y-u:-: NO To ‘OF3 - NO 00 (Page lo/- ., ‘s Page 40 me Taulr cleared? Replace the LCCU. 1 YES Tag the defective unit(s) and return for repair. -9-
FAULT FINDING SECTION 200-255-500 MARCH 1991 Replace the LCCU. Replace the NPRU and LCCU with a known good pair. Tag the NPRU as defective. Do not reinsert. CHART NO. 2 LOADING FAULTS (continued) Replace the disk with a back-up disk. Press the LOAD key momentarily. Verify that loading NOTE: See Section mo- 100-200, Paragraphs 7.01 and 7.02. / Does 1 Tao the I Measure all DC Supply voltages on the backplane. ..1 IO A4 0 Page 11 -lO-
Tag the NPRU and LCCU as defective. Do not reinsert. FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 2 LOADING FAULTS (continued) Tag the defective unit(s) and return for repair. Call the Service -ll-
FAULT FINDING SECTION 200-255-500 MARCH 1991 Start here to c/ear Power faults. CHART NO. 3 POWER FAULTS From 0 1 0 Page 4 here from the Fault Classification Switch the main circuit breaker to OFF and then back to ON. Go to Page 4 to classify fault. x Are Fromm I NO I circuit breaker Switch the main circuit breaker to OFF. Open the rear cabinet connection plate. i Disconnect the DC power supply cables to J201,5202, J203 and J703 (PERCEPTION,) or to 5201, J202.5203.5703 and&O3 (PERCEPTION,). disconnect power -. “LED otf” fault, press the circuit breaker(s) that correspond(s) to was/were off. * Switch the main 1 1 circuit brer to ON, Replace the power supply. Tag and return it for repair. Measure all DC supply voltages on 5201.5202. J203, and J703 (PERCEPTION,) or J201,5202, J203, J703,and 5803 (PERCEPTION,,). To -5 82 Page 13 NOTE: See Figure 2 and Secfion -* 200-255-200, Installation. Chapter 4, Paraaraoh 1.01. -12-
FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 3 POWER FAULTS (continued) If the problem is in an Expansion Cabinet, a/so - - - disconnect power SUDD/V cab/es I Jk’ and J702, Replace the power supply. Tag it and return for repair. Switch power to OFF and reconnect the DC cables to 5201,5202,5203, and 5703 (PERCEPTION,) or to J201,5202,5203, 5703, and J803 (PERCEPTION,,). f END Remove the NFDU. Remove all PCBs. 1 . - If this is a power supply “LED off” fault, press the circuit breaker(s) corresponding to the LED(s) that was/were off. - Switch the main J 1 circuit breaker to ON. I A Tag the defective unit(s) and return for repair. &l 0 Page 12 -13-
FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 4 RINGING POWER FAULTS you arrive Go to Page 4 here from the W fault.’ to classify Fault Classification Measure the -l ringer voltage at the backplane, between pins 4 and 6. I The NFDU or LCCU has a faulty indicator. Replace the defective unit at a convenient -14-
FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 5 TIME SWITCH CLOCK FAULTS IMPORTANT: This step will halt all call processing. It is advisable to wait until all trunks and stations are idle before performing this step. NoMy system users that the system will be temporarily down. * Replace the NTWU. * Verify that the clock LED is flashing. Tag the defective unit(s) and return for repair. -15-
FAULT FINDING SECTION 200-255-500 MARCH 1991 CHART NO. 7 NRCU FAULTS Go to Page 4 to classify fault. Either leave the circuit(s) disabled or enable as Using the TPER Program, disable and then enable the corresponding faulty circuit(s). -1. _ _ _ _ __ -Qf=!ipW=--) NO TO 0 AA Page 5 e3 END -17-