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Vodavi Starplus 616 Flex Electronic Key System Installation Manual

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    							sTARPLUS@ 616 FLEX KEY TELEPHONE SYSTEM 
    System Configuration 
    The System Configuration related database infor- 
    mation is provided in the following format: 
    SYS CONFIG 
    (ZUE HOLD ALM :DT :SIGL :ENBL 
    Y SY CL REPT N 
    PRV AMD SMDR BAUD PRNT BGM 
    Y 10 ALL 1200 80 N 
    LBC HOUR DATE 
    . . 12 MMDD 
    EX/SCl EX/SC2 EX/SC3 EX/SC4 
    . . . . . . . . . . . . . . . . 
    PBX CODES 
    . . . . . . . . 
    SMDR LINE ENABLE 
    01 02 03 04 05 06 
    QUE 
    HOLD 
    ALM 
    DT 
    SIGL 
    ENBL 
    PRV 
    ATTD 
    SMDR 
    BAUD 
    PRNT 
    BGM 
    LBC = Enabled = “Y”, Disabled = “N” 
    = Valid data is “EX” or “SW” 
    = Alarm parameters where: 
    = Closed “CL” or Open “OP” detec- 
    tion 
    =Repeated;“RPT” or one-time 
    “ONCE” signaling 
    =Enable the alarm, “Y”=yes, 
    “N”=no 
    = Privacy enabled, “Y”=yes, “N”=no 
    = Assigned Attendant station. Valid 
    data=Stations 1 O-25 
    =Type of SMDR: “ALL” prints local 
    and long distance; “LD” prints 
    long distance only 
    = Baud Rate: “300” or “1200” 
    = 29 or 80 character option 
    =Background Music Enable, 
    Y”=yes, “N”=no 
    =Loud Bell/CO Line Control sta- 
    tion/CO assignment. Valid data 
    for LBC Statton assignments is 
    “BIO through B25” or if pro- 
    grammed for CO Line Control, CO 
    Lines “CO1 through CO6” HOUR = ,Hro;;$rrnat: Valid display is “12” 
    DATE =Date format: Valid display. is 
    “MMDD” or “DDMM” 
    EWSC =The four (4) programmable Ex- 
    ecutive/Secretary pairs. Valid 
    data is stations “10” through “25” 
    PBX CODES =These are the four (4) rogram- 
    mable two-di it PBX co 
    a 8 es. Valid 
    data for eat two-digit code is 
    “?O” through “99” including 
    l ‘s and 
    r’,#sne drgrt codes are also al- 
    SMDR LINE ENABLE = CO lines assigned to 
    report port detailed call informa 
    tion. Unassigned CO lines are 
    shown as two dots “..” 
    640-2 ISSUE 1, JANUARY 1991  
    						
    							System Timers 
    The Timers printout will provide programmed infor- 
    mation on all programmable timers in the system in 
    the following format: 
    TIMERS 
    ERCL SRCL TRCL MSG-TNE PAUSE 
    060 060 030 00 2 
    RING-FWD CNFTO RNGTO 
    30 
    Where: 
    ERCL 
    SRCL 
    TRCL 
    MSG-TNE 
    PAUSE 
    RING-FWD 
    CNFTO 
    RNGTO 
    15 50 
    = Exclusive Recall Timer 
    = System Recall Timer 
    =Transfer Recall Timer 
    = Message Wait Reminder Tone 
    =Programmed length for a pause 
    stored in a speed dial number 
    =~usr~No Answer Ring Forward 
    = Conference Time-out for unsu- 
    pervised conference 
    = Ring Time-out Timer 
    Exception Tables 
    The Exception Tables printout will provide informa- 
    tion on data programmed into the Allow and Deny 
    Tables “A” and the Allow and Deny Tables “B”. Up 
    to eight (8) digit entries will be displayed. A double 
    period indicates that no data has been programmed 
    for the particular bin. Exception Table information is 
    displayed in the following format: 
    EXCEPT TABLE 
    ALLOW TABLE A 
    01 . . 09 . . 
    02 . . 10 . . 
    03 . . 11 . . 
    04 . . 12 . . 
    05 . . 13 . . 
    06 . . 14 . . 
    07 . . 15 . . 
    08 . . 16 . . 
    DENY TABLE A 
    01 . . 09 . . 
    02 . . 10 . . 
    03 . . 11 . . 
    04 . . 12 . . 
    05 . . 13 . . 
    06 . . 14 . . 
    07 . . 15 . . 
    08 a. 16 . . 
    Where: 
    Valid data will be digits [0] through [9], [t], and [#I, 
    and don’t care character “D”. Valid data, if pro- 
    grammed will printout in the eight spaces to the right 
    of each bin number with the first digit occupying the 
    position of the first period shown. 
    ISSUE 1, JANUARY 1991 640-3  
    						
    							~ARPLUS@ 616 FLEX KEY TELEPHONE SYSTEM 
    System Speed Dial Printout 
    System Speed Dial numbers programmed into the 
    system can be displayed in this printout. Up to six- 
    teen (16) digits can be displayed for each of the forty 
    (40) bins. System Speed Dial numbers can be dis- 
    played sequentially from bin 10 through 49, one bin 
    and it’s data per line. 
    SYSTEM SPEED 
    10 ..30 . . 
    11 ..31 . . 
    12 . .31! . . 
    13 ..33 . . 
    14 ..34 . . 
    15 ..35 . . 
    16 ..3G . . 
    17 ..37 .I 
    18 ..38 . . 
    19 ..39 . . 
    20 ..40 . . 
    21 ..41 . . 
    22 ..42 . . 
    23 ..43 . . 
    24 ..44 . . 
    25 ..45 . . 
    26 ..46 . . 
    27 ..47 . . 
    28 ..48 . . 
    29 ..49 . . 
    Where: 
    Valid data will be any digit [0] through [9], [*I and [W] 
    plus the rotary to DTMF switch-over command ‘T’, 
    the pause symbol “P”, the no display character “N”, 
    and the FLASH command “F”. Flexible Station Button Printout 
    The Flexible button assignments for the Key Tele- 
    phones can be displayed in this printout. 
    STATION 10 FLEX BUTTON ASSIGN 
    BTN FUNCTION BTN FUNCTION 
    01 DSS/BLF 10 12 DSS/BLF 21 
    02 DSS/BLF 11 13 DSS/BLF 22 
    03 DSS/BLF 12 14 DSS/BLF 23 
    04 DSS/BLF 13 15 DSS/BLF 24 
    05 DSS/BLF 14 16 DSS/BLF 25 
    06 DSS/BLF 15 17 CO LINE 01 
    07 DSS/BLF 16 18 CO LINE 02 
    08 DSS/BLF 17 19 CO LINE 03 
    09 DSS/BLF 18 20 CO LINE 04 
    10 DSS/BLF 19 21 CO LINE 05 
    11 DSS/BLF 20 22 CO LINE 06 
    NOTE: This example shows the format of the print- 
    out for a Enhanced or Executive key telephone. The 
    printout for a Basic key telephone will only show six 
    (6) buttons, disp/ayed as button 07 through 06. 
    Where FUNCTION Designations may be any of the 
    following: 
    DSS/BLF XX = Direct Station Selection where XX 
    is Stations 1 O-25 
    CO LINE XX = CO Line number 01-06 
    SPEED XX =Speed Bin number 00-09, 90-99, 
    or 1 O-49 
    POOL x 
    LOOP 
    MUL = CO Line Group number l-6 
    = Loop button assignment 
    = Multi-Function button (Un-pro- 
    grammed by the used) 
    IN PG X 
    INT AC PG 
    EXT PAGE 
    AC PAGE = Page Zone 1 or 2 
    = Internal All Call Page 
    = External Page 
    = All Call Page (internal and exter- 
    nal) 
    MEET ME = Meet Me Page code 
    MUTE = Mute Button 
    PICK UP = Group Pickup code [6] 
    UNA = Universal Night Answer code [55] 
    ALARM = Alarm Reset code [9] 
    MUSIC = Background Music function [8] 
    HEADSET = Headset Mode Function [41] 
    LNR = Last Number &dial [SPD+#) 
    This printout will be printed for all Stations that are 
    connected on the system when selected to print. 
    640-4 ISSUE 1, JANUARY 1991  
    						
    							s-f-AFtPLUS@ 616 FLEX KEY TELEPHONE SYSTEM 
    SECTION 700 
    SYSTEM CHECKOUT PROCEDURES 
    700.1 FUNCTIONAL TEST PROCEDURES 
    This section describes the procedures that should 
    be followed during system start-up. The installer will 
    also find these tests to be helpful in the event of 
    system mal-function and trouble shooting. System 
    trouble shooting will be confined to replacement of 
    key telephone sets & fuses. 
    700.2 PRELIMINARY CHECKLIST 
    Before starting the functional test procedures, it is 
    recommended that the following checklist be com- 
    pleted. This is designed to save time and possibly 
    eliminate the need for more detailed trouble shoot- 
    ing. 
    Check: 
    A. Station cables for proper connections and po- 
    larity. 
    B. Central off ice line connections. 
    C. Earth ground connections. 
    D. AC power cable. 
    E. Music source connections (if provided). 
    F. Alarm connections (if provided). 
    ISSUE 1, JANUARY 1991 700-l  
    						
    							STARPLUs@ FLEX KEY TELEPHONE SYSTEM 
    Table 700.1 
    - Key Station Testing 
    1 1. Connect the modular cord 
    to the instrument. 
    2. Press the ON/OFF button 
    on the telephone. 
    3. Background music 
    3.1 With the telephone in an 
    idle state, press “8” on 
    the dial pad. 
    3.2 Adjust voice volume 
    (front) knob on telephone. 
    3.3 Press “8” again. 
    4. Do Not Disturb 
    4.1 Press FWDIDND button. 
    Telephone must be on- 
    hook. 
    4.2 Press DND button again. 
    5. Tone ringing volume 
    Telephone must be in ‘7 
    mode. 
    5.1 From another telephone, 
    place an intercom call to 
    the set being tested. 
    6. Transmitting Data 
    Signals 
    6.1 When incorrect or no data 
    signals are transmitted 
    between KSU and the  OPERATIONAL TEST RESULT 
    1 .l ON/OFF LED momentarily 
    lights. 
    1.2 DND button flashes. 
    2.1 ON/OFF LED lights. 
    2.2 That station’s DSS LED 
    lights. 
    2.3 No reaction. 
    3.1 .l Background music is 
    heard. 
    3.1.2 No reaction. 
    3.2.1 Volume is increased or 
    decreased as desired. 
    3.2.2 No reaction 
    3.2.3 Low background music 
    (BGM) volume 
    3.3 Music is turned off. 
    4.1 .l DND LED is lit steady. 
    4.1.2 No reaction 
    4.2.1 DND LED is extiguished. 
    5.1 .l Two bursts of tone are 
    heard. Adjust volume if 
    necessary. 
    5.1.2 HOLD button LED 
    flashes. 
    5.1.3 DSS of calling station 
    flashes (if programmed). 
    5.1.4 Two bursts of tone 
    ringing are not heard. 
    6.1 .l Only ON/OFF LED lights 
    when pressed, remaining 
    LEDs do not light or they PROCEDURE 
    1.1 Normal 
    1.2 Check station wiring. 
    2.1 Normal 
    2.2 Normal 
    2.3.1 Make sure line cord is 
    plugged in. 
    2.3.2 Check K connector inside 
    the telephone. 
    3.1 Normal 
    3.1.2 Is handset on-hook? 
    Check music connections 
    on the KSU. 
    3.2.1 Normal 
    3.2.2 Check volume control 
    (VL2) in telephone. 
    3.2.3 Adjust BGM adjustment 
    on left side of KSU. 
    3.3 Normal 
    4.1 .l Normal 
    4.1.2 Check phone connections 
    4.1.3 Verify station is allowed DND 
    in programming. 
    4.2.1 Normal 
    5.1 .l Normal 
    5.1.2 Normal 
    5.1.3 Normal 
    5.1.4 Check phone connections. 
    6.1 .l Check cabling to telephone 
    and J-l wiring. 
    ‘700-2 ISSUE 1, JANUARY 1991  
    						
    							Table 700.2 - Intercom Station Testing 
    - 
    1. 
    1. 
    Making an intercom call. 
    Press DSS button or dial 
    station number of desired 
    party. 
    if called phone is a 
    speakerphone and is 
    placed in H (voice) mode: 
    1.2 if called station answers 
    by lifting the handset.  OPERATIONAL TEST 
    2. Call Pickup 
    2.1 Press DSS button or dial 
    station number of desired 
    PaW. 
    2.2 To answer at another 
    station, lift handset or 
    press ON/OFF button. 
    2.3 Dial Pickup Code “6”. 
    3. Intercom Conference 
    31. During an intercom con- 
    --- 
    RESULT 
    ..- __- PROCEDURE 
    1 .l .l ON/OFF LED lights. 
    1 .1.2 DSS LED of called party 
    is lit (if programmed). 
    1 .1.3 Busy tone is heard. 1 .l .l Normal 
    1 .1.2 Normal 
    1 .1.3 Normal if called party is in 
    DND, not installed, or is off- 
    hook. 
    1 .1.4 Three tones are heard if 
    called station is a speaker- 
    phone and in H mode. 
    1 .1.5 HOLD button flashes at 
    called station (30 ipm) 
    1 .1.6 Intercom call is not 
    connected. 1 .1.4 Normal 
    1 .1.5 Normal 
    1 .1.7 Intercom ringing is 
    heard instead of 3 bursts 
    of tone. 1 .1.6 Consult troubleshooting 
    guide (Section 8). 
    1 .1.7 Normal for station not in H 
    or P mode. 
    1 .1.8 Handsfree conversation 
    at called phone is not 
    possible. 1 .1.8 Check phone connections. 
    1.2.1 Flashing HOLD LED of 
    the called party is extin- 
    guished. 1.2.1 Normal 
    1.2.2 DSS of calling station 
    changes from flashing to 
    steady (if programmed). 1.2.2 Normal 
    2.1 Normal 
    2.1 Intercom ringing or CO 
    ringing heard at the called 
    station. 
    2.2 Intercom dial tone heard. 2.2 Normal 
    2.3 Called station returns to 
    idle state. HOLD LED is 
    extinguished. Intercom 
    conversation between 
    calling station & answering 
    station is possible. 
    Station LED is lit. 2.3 Normal 
    3.1 Intercom dial tone is 3.1 Normal 
    ___-.- 
    1 
    ISSUE,l, JANUARY 1991 700-3  
    						
    							: 
    STARPLUS@ 616 FLEX KEY TELEPHONE SYSTEM 
    Table 700.2 - Intercom Station Testing (Cont’d) 
    OPERATIONAL TEST RESULT PROCEDURE 
    5. Camp On (Call Waiting) 
    5.1 Lift handset or press ON/ 
    OFF button, then press 
    DSS button or dial desired 
    station number. Receive 
    busy on outside (CO) or 
    intercom call. 
    5.2 Press MSG/CP.ON 
    button. 
    6. Executive/Secretary 
    6.1 Transferring intercom 
    calls to an Executive/ ’ 
    Secretary phone. 
    Incoming intercom call is 
    routed to Secretary when 
    Executive station is busy. 
    7. Paging 
    7.1 Lift handset, dial “74” on 
    dial pad and make paging 
    announcement. 
    7- 
    I 
    / 
    5.1 Busy tone is heard 
    through handset or station 
    speaker. Station ON/OFF 
    LED is lit steady. 
    5.2 Ringing tone is heard at 
    calling station & 2 bursts 
    of tone are heard over 
    speaker at called station. 
    MSG/CP.ON LED and DSS 
    of calling station are 
    flashing at called station 
    at 60 ipm. 
    5.3 Busy tone heard con- 
    tinuously. 
    6.1 Incoming intercom call is 
    automatically transferred 
    to secretary station. 
    6.2 Incoming intercom call is 
    not transferred. 
    7.1 All call warning tone is 
    heard over key phone 
    speaker. HOLD LED 
    lights steady at stations 
    receiving the page, not 
    at page initiator. All 
    idle phones not in DND 
    or busy are paged. 
    7.2 DSS of paging station is 
    lit steady at all stations 
    where DSS is programmed 
    to appear. 
    7.3 Paging does not occur. 
    7.4 Hang up. Page is 
    terminated and all stations 
    not off-hook return to 5.1 Called phone is busy - normal. 
    5.2 Normal 
    5.3 Second camp-on request is 
    being made at same station. 
    6.1 Normal 
    6.2 Confirm programming of 
    Exec/Sec assignment. 
    7.1 Normal 
    7.2 Normal 
    7.3 Check programming for page 
    zones or change telephone. 
    7.4 Normal 
    700-4 ISSUE 1, JANUARY 1991 
    .y  
    						
    							sTARPLUS@ 616 FLEX KEY TELEPHONE SYSTEM 
    Table 780.3 - CO Line Functions Test 
    nPFRATlONA1 TEST RESULT PROCEDURE -. -* .~ . . .-. _. .- . -- . 
    I. Outgoing calls 
    I .I Lift handset or press ON/ 1 .I .l The CO line LED is lit 1 .I. 1 Normal 
    OFF button & press CO steady. 
    line button. 1 .I .2 Station OF/OFF button 1 .I .2 Normal 
    LED is lit steady. All 
    stations where DSS is 
    programmed to appear 
    are lit steady. Dial tone is 
    heard. 
    1 .I .3 CO LED is not lit. 1 .I .3 Check line access 
    programming. 
    2. Incoming calls 
    2.1 Incoming CO ringing 
    2.2 Press flashing CO line 
    button. 1 .I .4 Dial tone is not heard. 
    2.1 .I Co ringing is heard. 
    2.1.2 CO ringing is not heard 
    but that line is flashing. 
    2.1.3 CO line LED or loop 
    button LED is flashing at 
    30 ipm. 
    2.2 CO line LED or loop 
    button is lit steady. 1 .I .4 Check CO line connections 
    at RJ-21X on the KSU. 
    2.1 .I Normal 
    2.1.2 Check programming for ring 
    assignment (day/night). Check 
    CO line connections at RJ-21 X 
    on the KSU. 
    2.1.3 Normal 
    2.2 Normal 
    3. Transferring a CO line 
    call 
    3.1 .I The CO line is placed on 3.1 .I Normal 
    3.1 During a CO line coversa- 
    Exclusive Hold automati- 
    tion, press TRANS/QUE 
    tally. 
    and dial station number 
    3.1.2 CO line LED is flashing 3.1.2 Normal 
    to which CO line is to be 
    at transferring station but 
    transferred or press that 
    remains steady at all 
    station’s DSS button. 
    other stations having line 
    access. 
    3.1.3 At receiving phone, the 
    CO line or loop button 
    LED is flashing at 
    Exclusive Hold. 3.1.3 Normal 
    3.1.4 Hang up after dialing 
    station number or pressing 
    DSS button for unscreened 
    transfer; announce call 
    to receiving station before 
    hanging up for screened 3.1.4 Normal 
    ISSUE 1, JANUARY 1991 700-5  
    						
    							Table 700.3 - CO Line Functions Test (Cont’d) 
    i 
    OPERATIONAL TEST RESULT 
    3.2 At phone receiving the 
    transfer, press flashing CO 
    line button or loop button. 3.2.1 CO line LED is now 
    steady at all phones in 
    the system. 
    3.2.2 CO line call is not 
    transferred to desired 
    station. 
    / 4. Add-On Conference 
    4.1 During a CO line conver- 
    sation, press the CONF 
    button. 
    4.2 Press DSS button of 3rd 
    party to be added to the 
    conversation. 
    4.3 When 3rd party answers, 
    initiator presses CONF 
    button again. 
    j 4.4 Hang up handset at first 
    station to terminate 
    conference call. 
    5. Multi-line Conference 
    5.1 Place an outgoing CO line 
    call. 
    5.2 When party answers & is 
    notifed of conference 
    request, initiator presses 
    the CONF button. 
    5.3 Initiator presses another 
    CO line button & makes 
    another outgoing call to 
    party C. 
    5.4 Initiator presses CONF 
    button again. 
    6. Flash 
    6.1 When completing a CO 
    line conversation, press 
    the FLASH button. PROCEDURE 
    4.1 CO line is placed on 
    Exclusive hold automati- 
    cally, receiving MOH if 
    provided. 
    4.2 Ringing is heard. 
    4.3 All 3 patties are connected 
    together. CONF LED at 
    both internal stations is 
    lit. 
    4.4 CONF LED will extinguish. 
    5.1 Ringing is heard 
    5.2 Party B is placed automa- 
    tically on Exclusive Hold, 
    hearing MOH if provided. 
    Initiator hears intercom 
    dial tone. 
    5.3 CONF LED is lit steady & 
    ringing is heard. 
    5.4 All 3 parties are connected 
    and both CO line LEDs 
    are lit steady. CONF 
    button LED is lit steady. 
    6.1 New CO dial tone is 
    heard. 3.2.1 Normal 
    3.2.2 Check if called station is in 
    DND. 
    4.1 Normal 
    4.2 Normal 
    4.3 Normal 
    4.4 Normal 
    5.1 Normal 
    5.2 Normal 
    5.3 Normal 
    5.4 Normal 
    6.1 Normal 
    700-6 ISSUE 1, JANUARY 1991  
    						
    							STARPLUS@ 616 FLEX KEY TELEPHONE SYSTEM 
    SECTION 800 
    MAINTENANCE AND TROUBLESHOOTING 
    800.1 GENERAL INFORMATION 
    This section provides common maintenance, trou- 
    bleshooting and repair instructions for the STAR- 
    PLUS 616 FLEX Key Telephone System. It is 
    advisable to use the latest issue manual and sup- 
    porting documentation whenever possible. 
    The 616 FLEX architecture is designed such that all 
    solid state circuitry is enclosed in the KSU. The only 
    modular or replaceable type printed circuit boards 
    located insidethe KSU are the SIU and RCU. There- 
    fore unless installing or replacing these boards, the 
    KSU cover should not be removed. 
    Isolating problems in the replaceable units such as 
    the key telephones or any external devices requires 
    no special knowledge of solid state electronics or 
    micro-processor programming techniques. The 616 
    FLEX system requires no involved or complicated 
    mechanical procedures for installation or removal of 
    peripherals. 
    800.2 PREVENTIVE MAINTENANCE 
    A regular preventive maintenance program is essen- 
    tial to reduce the possibility of system failures. Gen- 
    eral type servicing such as cleaning and inspecting 
    should be done yearly. If the KSU is located in an 
    area of humidity, dust, etc., servicing should be done 
    more frequently. General servicing should include: 
    0 Hardware and cabling. Check for general me- 
    chanical integrity, loose or broken wires, plugs 
    or connectors. Tighten or repair as necessary. 
    l KSU. Inspect air vents located in front and on 
    top of the KSU cabinet for unrestricted air 
    passage. 
    l MDF/cabling. Inspect the MDF for loose 
    wires, obstructions, dust and dirt. 
    800.3 TEST EQUIPMENT AND TOOLS 
    The following test equipment and tools are neces- 
    sary in performing maintenance and repair on the 
    616 FLEX system. 
    0 
    voltmeter 
    l DTMF/dial pulse hand held test telephone 
    l standard telephone repairman’s hand tools 800.4 SPARE PARTS 
    The troubleshooting and repair instructions are 
    based on the assumption that spare key telephones 
    and KSU are available to the repairman, either on- 
    site or at a central warehouse/storeroom location. In 
    addition, spare fuses, jacks, wire and terminal block 
    should be available. 
    800.5 FIELD SERVICE ENGINEERING 
    Installation, troubleshooting and repair are de- 
    scribed in detail within this manual. However, field 
    service type questions such as application require- 
    ments and troubleshooting assistance arise which 
    require support. Such services are available 
    through STARPLUS field service. 
    800.6 FAULT CLASSIFICATION 
    Reported problems come from a variety of people 
    under differing conditions, therefore all trouble re- 
    ports should be thoroughly examined so that the 
    exact problem is understood. Do not always suspect 
    the 616 FLEX equipment. Be sure to check external 
    interface equipment such as the MDF, interconnec- 
    tion points, cabling, central office or programming. 
    To help isolate a fault from the reported description, 
    the following information should be investigated to 
    further define the fault source. 
    A. Were any changes made recently to the cus- 
    tomer database assignments that could cause 
    the problem? 
    B. Were any changes made recently to cabling 
    that could cause the problem? 
    C. Is the trouble condition associated with one 
    circuit, a particular section or sections of circuits 
    (i.e., CO lines, stations) or common to all cir- 
    cuits? 
    D. Is the trouble intermittent or continuous? 
    E. Could the trouble be caused by “cross symp- 
    toms” such that 2 failures mask the symptoms 
    associated with a particular fault? 
    800.7 SYSTEM FAILURES 
    Various problems will affect the entire system. 
    These are normally related to power failures, central 
    processor failures, or memory failures. Where cen- 
    tral processor or memory failures occur, the KSU 
    must be replaced. When loss of power occurs, steps 
    can be taken to localize the problem. 
    ISSUE 1, JANUARY 1991 800-l  
    						
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