Orban OPTIMOD 8400 - Section 5 Troubleshooting

OPTIMOD-FM TROUBLESHOOTING
5-1
Section 5
Troubleshooting
P
ROBLEMS AND POTENTIAL SOLUTIONS ....................................................................................5-2
Headphones Don’t Work ......................................................................................................5-2
RFI, Hum, Clicks, or Buzzes.................................................................................................5-2
Unexpectedly Quiet On-Air Levels .......................................................................................5-2
Poor Peak Modulation Control ............................................................................................5-2
Audible Distortion On-Air ....................................................................................................5-3
Audible Noise on Air.............................................................................................................5-3
Whistle on Air, Perhaps Only in Stereo Reception...............................................................5-4
Interference From Stereo Into SCA ......................................................................................5-5
Shrill, Harsh Sound ..............................................................................................................5-6
Dull Sound ............................................................................................................................5-6
System Will Not Pass Line-Up Tones at 100% Modulation..................................................5-6
System Will Not Pass Emergency Alert System (“EAS” USA Standard) Tones at the Legally
Required Modulation Level ..................................................................................................5-6
System Receiving 8400’s Digital Output Will Not Lock .......................................................5-7
19 kHz Frequency Out-of-Tolerance....................................................................................5-7
L–R (Stereo Difference Channel) Will Not Null With Monophonic Input ............................5-7
General Dissatisfaction with Subjective Sound Quality .......................................................5-7
Security Passcode Lost (When Unit is Locked Out) .............................................................5-7
Connection Issues between the 8400 and a PC, Modem, or Network ..................................5-8
Troubleshooting Connections...............................................................................................5-9
OS-Specific Troubleshooting Advice ....................................................................................5-9
TROUBLESHOOTING IC OPAMPS...............................................................................................5-14
TECHNICAL SUPPORT...............................................................................................................5-15
FACTORY SERVICE...................................................................................................................5-15
SHIPPING INSTRUCTIONS..........................................................................................................5-15