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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-  
    						
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