Inter-Tel 824 Installation And Field Maintenance Manual

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...

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...

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...

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...

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...

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...

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...

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...

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...