Troubleshooting - MBL 6010 D Bedienungsanleitung

10. Troubleshooting

Please consider the following notes for installing your preamplifi er. Proper functionality can be a ected by:
• excessively high temperatures (>40°C (104°F); e.g. near a radiator),
• excessively low temperatures (<10°C (50°F)),
• excessively high humidity (>95%; e.g. near an air dampener),
• excessively low humidity (<10%),
• extreme temperature changes (may lead to condensation),
• electric sources (such as fl uorescent tubes or engines),
• vibrations and shocks.
If any trouble occurs, fi rst make sure that the conditions listed above are not present.
The device does not run. The indicator remains dark.
• Is the power plug properly connected?
• Are the cables fi rmly inserted into the appropriate jack?
• Is voltage present at the main socket? Check by connecting and switching on a di erent device.
If the preamplifi er does not work though it is properly connected to the power, check the mains fuse.
Caution!: checking fuses: always disconnect the unit from the power supply!
Pull the element right of the power connector of the device. The fuse holder accommodates two fuses (0.63 amps
sb for 230 V mains voltage, 1.25 amps sb for 115 V mains voltage). The main fuse is located at the rear of the unit,
the one at the front is a spare part; interchange the two fuses, then push the element back to its original position.
Connect the power plug to the power source and check, whether the preamplifi er starts working now.
If the device still does not work, disconnect it from the power source and wait a minimum of three hours for pos-
sibly emerged condensation to dry, or other impacts to cease. Then, reconnect the device to the power outlet
and check whether the preamplifi er starts working now. If the device does not work properly, contact a qualifi ed
technician for assistance.
The device is on. But I cannot hear music.
• Check cable connection from the preamplifi er to the power amplifi er and from the input devices to the pre-
amplifi er.
• Are the speakers properly connected?
• Are the audio sources and the power amplifi ers properly connected to the power outlet? Are these devices
turned on?
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