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4-2
MAINTENANCE
Routine Maintenance
The 6200 OPTIMOD-DAB Audio Processor uses highly stable analog and digital cir-
cuitry throughout. Recommended routine maintenance is minimal.
1. Periodically check audio level and gain reduction meter readings.
Become familiar with normal audio level meter readings, and with the normal
performance of the G/R metering. If any meter reading is abnormal, see Sec-
tion 5 for troubleshooting information.
2. Listen to the 6200's output.
A good ear will pick up many faults. Familiarize yourself with the "sound" of
the 6200 as you have set it up, and be sensitive to changes or deterioration.
But if problems arise, please don't jump to the conclusion that the 6200 is at
fault. The troubleshooting information in Section 5 will help you determine if
the problem is with OPTIMOD-DAB or is somewhere else in the station's
equipment.
3. Periodically check for corrosion.
Particularly in humid or salt-spray environments, check for corrosion at the
input and output connectors and at those places where the 6200 chassis con-
tacts the rack.
4. Periodically check for loss of grounding.
Check for loss of grounding due to corrosion or loosening of rack mounting
screws.
5. Clean the front panel when it gets soiled.
Wash the front panel with a mild household detergent and a damp cloth.
Stronger solvents should not be used because they may damage plastic parts,
paint, or the silk-screened lettering (99% isopropyl alcohol can be safely
used).
Getting Inside the Chassis
1. Removing the Top Cover.
To access the main board, power supply board or display assembly, you must
remove the top cover.
Orban Model 6200
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