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4-1
S ECTION
C
HAPTER
4
M
AINTENANCE
Preventive Maintenance
Clean the unit and verify its performance periodically.
Factory Support Information
Factory support information is located on the first page of this manual.
Corrective Maintenance
WARNING: Hazardous voltages exist inside the MCE325. Attempting diagnosis, repair,
or adjustment with the AC line connected could result in serious injury or death. These
servicing instructions are for qualified personnel only.
Access
1 Reference the AS6464 drawing in section 6. Remove the four long screws (item 4) and the two
short screws (item 5).
2 Lift off the top cover.
3 Pull the front panel slightly forward to clear the carbon mic jack on the main circuit board. Lift
the front panel slightly while sliding the back panel toward the rear and out of the lower case.
The MCE325 may now be operated for troubleshooting.
NOTE
when reassembling the bottom cover, make sure the rubber button on the inside of the bottom
cover (item 7) is toward the front of the unit.
Front Panel Removal
1 Unplug the panel mic (J1) and dynamic-mic headset (J2) connectors from the main circuit
board.