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Toshiba Perception 1 2 User Manual

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    							FAULTFINDING 
    SECTION 200-255-500 
    MARCH1991 
    CHART NO. 8 
    NCOU/NEMU/NLSU FAULTS 
    I 
    Start here to 
    clear NCOWNEMW 
    NLSU faults. 
    t 
    I 
    - -ge4 
    to classify 
    circuit(s) disabled by 
    NOTE: If any 
    NCOU/NEMU/NLSU 
    circuit(s) is/are Sri// 
    disabled, the fault 
    indicates something _ _ - - - -- 
    Replace the NCOU/ 
    NEMWNLSU PCS 
    which has the FALT 
    LED indication. 
    YES Tag the 
    defective unit(s) 
    and return 
    for repair. 
    _-- , 
    -18-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 9 
    NEKUINDKUINSTUINDSU FAULTS 
    Fault Classification NO Go to Page 4 
    to classify 
    fault. 
    Either leave the 
    circuits disabled 
    or enable as 
    required. 
    ~~ electronic/digital telephones 
    1 NO 
    NOTE: If any NEKUI NDKU/NSTU/NDSU circuit(s) is/are still 
    disabled the fault 
    indicates somethino 
    besides disabled siate. Replace the NEKU/NDKU/ 
    NSTUINDSU PCB 
    which has the FALT 
    LED indication. Verify that all 
    electronic/digital telephones  electronic/digital telephones 
    are connected.  are connected. 
    YES 
    Tag the 
    defective unit(s) 
    and return 
    for repair. 
    -19-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 10 
    SMDR, TTY, OR MODEM FAULTS 
    Start here to 
    llT, or MODEM From 
    Pages 5, 
    7, a 
    r?  -------_-______ 
    Did 
    NO 
    l 
    * Respective external 
    equipment (SMDR. 
    TTY, or MODEM) 
    is functioning. 
    * Baud rate switch on 
    LCCU is set correctly. 
    * Connections are correct 
    Correct any faults. Verify that SMDR is: 
    * Defined correctly in the 
    DMDR Program. 
    * Enabled in the 
    DSYS Program. 
    * Correctly connected 
    between the cabinet 
    NO 
    YES 
    < the fault 
    cleared? yLy END 
    To 
    A I1 
    Pa& 21 
    i/ 
    -2o-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH1991 
    CHART NO. 10 
    SMDR, TTY, OR MODEM FAULTS (continued) 
    The following instructions 
    will cause all calls in 
    progress to be disconnected _ _ _ _ _ 
    and no new calls will be 
    established. 
    Do not continue while Press the INIT 
    key on the NPRU 
    momentarily. (Wait 
    a few seconds 
    for initalization 
    to be completed.) 
    TN0 
    Press the LOAD 
    key on the NPRU 
    momentarily. (Wait 
    about 30 seconds 
    for reloading to 
    be completed.) 
    YES 
    r-c the loading 
    cycle completed? Call the Service 
    Center for 
    assistance. 
    Tag the 
    Defective units(s)  Defective units(s) 
    and return 
    for repair. 
    -21-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 11 
    VOICE COMMUNICATION STATION FAULTS 
    eouioment. I 
    Replace the 
    station unit 
    (electronic/digital 
    telephone/SST). 
    located station 
    Random Station 
    && 
    Concentrate on 
    clearing faults 
    on stations assigned 
    to the same PCB 
    location. 
    t- 
    I 
    NOTE: Consult 
    fhe System Record 
    for station unit/PCB 
    assignment. YES 
    * Verify the station cable. 
    (See Fault Finding 
    Paragraphs 
    5.02 - 5.04) 
    - Correct if faulty. 
    -22-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 12 
    INIT/LOAD KEY FAULTS 
    here from the 
    Fault Classification Go to Page 4 
    to classsify 
    fault. 
    l 
    Replace all the 
    unit(s) that were 
    reinserted or 
    replaced with a 
    known good set. NOTE: See 
    Figure 2 on 
    Page 50. 
    Measure all DC 
    supply voltages 
    on the backplane. 
    r 
    i 
    YES 
    NO 
    I 
    1 Tag the 
    defective unit(s) 
    and return 
    for repair. - Replace original 
    units, one at a time. 
    - If trouble occurs, 
    suspected unit. 
    Call the Service 
    Center for 
    assistance. 
    -23-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    Start here to 
    c/ear MAJOR - 
    ALARM faults. 
    CHART NO. 13 
    MAJOR ALARM FAULTS 
    (MAJ LED ON) 
    y.YES 
    Tag the 
    LED on the LCCU defective unit(s) 
    and return 
    for repair. 
    -7 I YES 
    I 
    -24  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 14 
    CO/DID/TIE TRUNK FAULTS 
    Voice Comm. is 
    used, this answer 
    NOTE: From here 
    YES on, the flowchart 
    regards Voice Comm. 
    faults only. 
    NO 
    than one NCOW 
    NEMUINLSU? NO 
    L 
    + 
    YES Replace the 
    affected NCOW 
    NEMWNLSU 
    PCB. 
    defective unit(s) 
    and return NOTE: If more than 
    PC& are affected, 
    concentrate on one 
    PCB. See System 
    Record for trunW/ine 
    23 END 
    -25-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 15 
    ATTENDANT CONSOLE FAULTS 
    Console faults. 
    here from the 
    Fault Classification 
    YES 
    i 
    - Verify that Attendant 
    Console wiring/ 
    cabling is correct. 
    l Correct any faults. 
    Replace the  Replace the 
    Attendant  Attendant 
    Console.  Console. Replace the 
    NPRU. 
    Replace the 
    NEKU to which 
    Attendant Console 
    is assigned.  ] is ass7 NOTE: Consult 
    System Record 
    for station 
    assignment. 
     ra.yt: 
    /  INTfault?  lower), EMT, or / 
    ‘“Y-w / FNn  To/--Y 
    .f / 
    - . . 
    -26-  
    						
    							FAULT FINDING 
    SECTION 200-255-500 
    MARCH 1991 
    CHART NO. 16 
    COMMON STATION FEATURE FAULTS 
    fault. 
    Fault must be 
    reclassified. 
    Page 4. 
    I A This is not a 
    common station NO 
    t-c Isit  
    feature fault. 
    fault? 
    Return to Page 4. 
    /  a wake-up - Verify that the 
    /  appropriate 
    I 
    I NO 
    NC-I /h 
    I 
    -Y YES ‘Y YES the fault 
    cleared? 
    Fromm I Page 30 
    u 
     Page 30 ) 
    -27-  
    						
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