Inter-Tel 824 Installation And Field Maintenance Manual
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INTER-TEL PRACTICES 824 INSTALLATION & MAINTENANCE TROUBLESHOOTING Issue 1, June 1984 . FIGURE 6-i. LIGBT-EMITTING DIODE INDICATIONS PCB CPU LED Location Description A,C,D clock Status LEDs Indicates that the CPU is functioning. Rate of flash indicates the clock status in the system. . . B NM1 LED (normally off) Indicates that a non-maskable interrupt has occurred. co1 A-D Circuit LEDs (normally off) Indicates that the C.O. line associated with the LED is accessed. LEDsCandD are not used on a 2-CO1 PCB. KTI A-H Circuit LEDs (off when not in use) Indicates that the station associated with that circuit is in use. LEDs E-H are not present on 4-KTI PCBs. NOTE: Refer to Figure 6-2, on the next page, for the LED locations. .-- Page 6-4
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTALLATION & MAINTENANCE Issue 1, June 1984 -I FIGURE 6-2. LED LOCATIONS CPU PCB - 0 0 0 0 - 4-COI 2-co I 8-KTI 4-KTI PCB PCB PCB PCB A B C D - 0 0 0 0 - A B C D - 3 3 3 3 - A B C D E F G H - 0 0 0 0 0 0 0 0 - A B C D - 3 3 3 3 - . Page 6-5
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTAIJATION & MAINTFXANCE Issue 1, June 1984 C. SYSTEM TROUBLESHOOTING PROCEDURES 3.03 The troubleshooting procedures for correcting equipment failures have been divided into four separate categories: l Feature Failure 0 Internal Communications l External Communications l System Malfunctions :. Feature Failure 3.04 If the problem involves system features: (1) Try the feature according to the instructions in the FEATURES section to determine if the problem is due to user errors. (2) If the feature does not work properly, remove the keypad portion. Examine the contacts under the feature button for dirt or dust and clean if necessary. (3) If the problems persist, proceed to Figure 6-3, Feature Failure Troubleshooting Chart, on the next page. Internal Communications 3.05 If the problem involves only internal calls, refer to Figure 6-4, Internal Communications Troubleshooting Chart, page 6-9. External COmuniCatiOnS 3.06 If the problem involves only external calls, refer to Figure 6-5, External Communications Troubleshooting Chart, page 6-11. System Malfunctions 3.07 If the problem involves the entire system, refer to Figure 6-6, System Malfunctions Troubleshooting Chart, page 6-12. 3.08 The following troubleshooting charts list symptoms, pos- sible causes and corrective actions. Perform the corrective actions in the order given. If the problem persists, contact Inter-Tel Field Service for assistance. . Page 6-6
INTER-TEL PRACTICES 824 INSTALLATION & MAINTENANCE TROUBLESHOOTING Issue 1, June 1984 FIGURE 6-3. FEATURE FAILURE TROUBLESHOOTING CHART Symptom Probable Cause Corrective Action Cannot place a Users error Refer to FEATURES for correct call on hold procedures. Defective keyset Replace the keyset. I Defective CPU PCB Contact Inter-Tel Field Service for assistance. Cannot put the User error Refer to FEATURES for correct : keyset on Call procedures. .-- Forwarding Defective keyset Replace the keyset. Defective CPU PCB Contact Inter-Tel Field Service for assistance, Cannot put the User error Refer to FEATURES for correct keyset in procedures. Do-Not-Disturb Defective keyset Replace the keyset. Defective CPU PCB Contact Inter-Tel Field Service . for assistance. Last Number User error Refer to FEATURES for correct Redial feature procedures. not working Defective keyset Replace the keyset. Defective CPU PCB Contact Inter-Tel Field Service for assistance. Cannot transfer User error Refer.to FEATURES ,for correct,- ,., :. outside calls _, ., procedures ; :_,: . ; :.,: ; ( to other keysets _., Called station is Any station in Do-NotlDisturb. in Do-Not-Disturb cannot receive transferred calls. i Defective keyset Replace the keyset. Defective CPU PCB Contact Inter-Tel Field Service .for assistance. Page 6-7 l
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTALLATION h MAINTENANCE Issue I, June 1984 FIGURE 6-3. FEATURE FAILURE TROUBLESHOOTING CHART (CONTD) sVmptom Probable Cause Corrective Action > Speed-dial User error Refer to FEATURES for correct number memory procedures. lost or not working Data base erased Reprogram the feature. Refer to SYSTEM PROGRAMMING. Power to data base Place.the.battery strap in the waS removed ON position. Reprogram the data base. Defective keyset Replace the keyset. Defective CPU PCB Contact Inter-Tel Field Service. Cannot initiate User error Refer to FEATURES for correct a conference procedures. Conference option The system must be programmed not programmed for conferencing. Defective keyset - Replace the keyset. Defective CPU PCB. Contact Inter-Tel Field Service. Cannot initiate User error Refer to FEATURES for correct a page procedures. No paging zones Ensure that the stations are programmed in programmed for paging. Refer the data base to SYSTEM PROGRAMMING. Defective keyset Replace the keyset. ,. : . . : Defective CPU ,PCB,. Contact Inter-Tel Field Service. i . ! . Paging times User error Refer to FEATURES for correct out in less procedures. 1 b -; than 30 seconds -, % Defective KTI PCB Replace the faulty KTI PCB. . Defective keyset Replace the keyset. Defective CPU PCB Contact Inter-Tel Field Service. . Page 6-8
INTER-TEL PRACTICES 824 INSTALLATION h MAINTENANCE TROUBLESHOOTING Issue 1, June 1984 ./ FIGURE 6-4. INTERNAL COMMUNICATIONS TROUBLESHOOTING CEIART Symptom No intercom dial tone Probable Cause Corrective Action Dial tone option Check programming. Dial tone not enabled may be disabled through system programming. Extension number Refer to INSTALLATION for switch not set settings. correctly Defective cabling Check cable connections. Defective keyset Replace the keyset. Defective KTI PCB Replace the corresponding PCB. Cannot place Extension number Refer to INSTALLATION for intercom calls switch not set settings. correctly , Defective keyset Replace the keyset. Defective KTI PCB Replace the corresponding PCB. Data noise in keyset Defective cabling Check for loose or open or connections connections, or crossed wires. Defective keyset Replace the keyset. Defective KTI PCB Replace the corresponding PCB. Keyset not working Defective keyset Replace the keyset. Defective cabling Check for loose or open connections in corresponding cabling. Defective fuse on Replace the fuse. KTI PCB Extension number Refer to INSTALLATION switch not set settings. correctly for Defective KTI PCB Replace the corresponding PCB. . Page 6-9
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTALLATION & MAINTENANCE Issue 1, June 1984 FIGURE 6-4. INTERNAL COMMUNICATIONS TROUBLESHOOTING CHART (CONTD) Symptom Probable Cause Other station Defective KTI PCB converstions can be heard on the Defective CPU PCB line “Meet Me feature interferring with intercom call Corrective Action Replace the corresponding PCB. Contact Inter-Tel Field Service. Meet Me accesses the first intercom path when there is not a page in progress. This may interrupt a handsfree intercom call. Keyset will not Programming error ring when called (busy signal or wrong keyset rings) Extension number switch not set correctly Defective keyset Use program number 20 to ensure that intercom numbers are not duplicated or unassigned. If duplicated, the lowest-numbered circuit rings. Unassigned num- bers produce a busy signal. Refer to INSTALLATION for settings. Replace the keyset. No names or User error Refer to FEATURES for correct messages appear procedures. on Display keyset Programming error Check message and name regis- tration programming for blank entries. Defective keyset Replace the.keyset. Defective CPU PCB Contact Inter-Tel Field Service. Power Failure Keyset not equipped Replace with PFT keyset. Transfer keyset does not connect Defective CO1 PCB Replace CO1 PCB. to C.O. line during power Defective keyset Replace the keyset. failure . NOTE: These symptoms are isolated to one keyset only. For identical problems involving more than one keyset, refer to Figure 6-6, page 6-12. Page 6-10
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTALLATION & MAINTENANCE Issue 1, June 1984 ;’ FIGURE 6-5. EXTERNAL cm ICATIONS TROUBLESHOOTING CHART symptom Probable Cause Corrective Action Cannot obtain C.O. Line(s) Check the station option C.O. dial tone restricted programming for that keyset. Defective keyset Replace the keyset. Defective KTI PCB Replace the KTI PCB. Defective CO1 PCB Replace the CO1 PCB. Defective CPU PCB Contact Inter-Tel Field Service for assistance. Cannot place an Keyset is Check the station:option outside call. toll retricted programming for that keyset. C.O. dial tone present (intercom Defective keyset , Replace the keyset. works). Defective CPU PCB Contact Inter-Tel Field Service for assistance. Outside calls Loop current Central Office must supply being dropped interrupt from constant loop current. during conver- Central Office sation or upon answering C.O. Insufficient loop Central Office must supply call. current supplied 20mA loop current minimum. by Central Office Defective keyset Replace the keyset. Defective CO1 PCB Replace the CO1 PCB. . . Defective CPU PCB Contact Inter-Tel Field Service ~ for assistance. NOTE : These symptoms are isolated to one keyset only. For identical problems involving more than one keyset;.r.efer to Figure 6-6, the next.page. -. . Page 6-11
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTALLATION & MAINTENANCE Issue 1, June 1984 FIGURE 6-6. SYSTEM MALEUK!TIONS TROUBLESHOOTING CHART sympt= Probable Cause Corrective Action All keysets Main power fuse in the system open will not operate. No LED indication when a line key is pressed. Open connection in the cable between power supply and KSU cardfile. Examine the fuse and replace it if necessary. L CAUTION: Do not exceed maximum rating of fuse. Turn off the system. Use an ohmmeter to check the cable connector and replace or repair the faulty cable. Fuses on the KTI Examine the KTI fuses and PCB open replace if faulty. Defective power .Remove all PCBs from the KSU. supply or PCB Use a voltmeter and check the supply voltage on the terminal block of the power supply. If the voltage is not 23.5- 27.5VDC, replace the power suPPlY* If the voltage is correct,- then replace the PCBs one at a time, checking the +5VDC, until the defective PCB is isolated. A group of 4 or Defective fuse on 8 keysets (4- or Replace the fuse. KTI PCB 8-KTI PCB) not . . working. No LED Defective KTI PCB indication when a Replace the KTI PCB. _. -.- S,_,> .- . (, line key is Defective or ,_ .l .. Remove thecable from the MDF- >; II. . : pressed. All miswired amphenol PCB and..use me.ter -to verify :_ : . sets are on one connector on the ,.,the pinout of thercable. KTI PCB. MDF PCB. 1 I : Defective CPU PCB Contact Inter-Tel Field Service for assistance. Defective Replace the KSU. receptacle on the KSU backplane . Page 6-12
INTER-TEL PRACTICES TROUBLESHOOTING 824 INSTALLATION b MAINTENANCE Issue 1, June 1984 FIGURE 6-6. SYSTEM MALFUNCTIONS TROUBLESHOOTING CHART (CONTD) Symptom Probable Cause Corrective Action A group of 4 or Hot pre-wire Hot pre-wires are not allowed. 8 keysets (4- or For these cables, do not com- 8-KTI PCB) reset plete the bridging on the KTI repeatedly block. Extension number Refer to INSTALLATION for switch setting not correct settings. correct on keyset Defective cable Check for loose cabling. Meter the cable, check for shorts, loop resistance, opens, etc. Defective keyset Determine which keyset is faulty and replace it. CO1 Jumper PCB not Reseat the CO1 Jumper PCB. seated properly (affects circuits 1.5 through 1.8) No intercom Option not enabled Check system programming to dial tone on ensure that dial tone has not any keyset in been disabled. the system Defective MISC PCB Replace the MISC PCB. Door-Mate not working Option not enabled Check system programming to ensure that Door-Mate access/ answering has been enabled. No DOOR PCB in the DOOR PCB must be installed. KSU Defective cable Check Door-Mate cabling. Refer to INSTALLATION for details. Defective Door-Mate Replace the Door-Mate. Defective DOOR PCB Replace the DOOR PCB. Defective MISC PCB Replace the MISC PCB. Defective CPU PCB COntaCt Inter-Tel Field Service :; for assistance. . Page 6-13