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4. The packaging of the charger is recyclabe. To dispose of the packaging, make sure to use a collection/ recycling system provided for that purpose and observe local legislation relating to waste disposal and recycling. 2 Description 2.1 Introduction Thank you for purchasing an AKG product. This Manual contains important instructions for setting up and operating your equipment. Please take a few minutes to read the instructions below carefully before operating the equipment. Please keep the Manual for future reference. Have fun and impress your audience! 2.2 Unpacking 1 AC adapter (if checked on the 2 AA size NiMH rechargeable 1 CU 400 charger packaging) batteries (2100 mAh) 2.3 Description Indicators DC input Check that the packaging contains all of the items listed above. Should anything be missing, please contact your AKG dealer. The CU 400 has been designed specifically for use with the WMS 400 system. The charger provides two charging slots specially shaped to accept the HT 400/PT 400 transmitters. The charging slots operate completely independently so you can charge two rechargeable batteries simultaneously. You do not need to remove the battery from the transmitter for charging. Designed specifically for use with the WMS 400 transmitters, the CU 400 charger • monitors battery voltages and temperatures during charging; • generates a flag signaling the end of the charging cycle upon reaching maximum capacity; • monitors all required safety parameters and will stop the charging cycle if one or more safety parameters are out of range. The charger checks the battery inside the transmitter and will automatically deactivate the charging function if it detects a dry battery. There is one STATUS LED in front of each charging slot. These tricolor (red/orange/green) LEDs indicate the current operating status of the charger. The DC 5V jack on the rear panel accepts the DC cable on the included AC adapter. CU 400 3 Connecting to Power 1. Check that the AC mains voltage stated on the included power supply is identical to the AC mains voltage available where you will use your system. Using the power supply with a different AC voltage may damage the unit. Important! Do not use any power supply other than the AC adapter supplied with the charger. Never connect the CU 400 charger to the PSU 4000 central power supply because the output voltage of the PSU 4000 is incompatible with the CU 400. Important! 2. Connect the DC cable of the supplied AC adapter to the DC 5 V jack on the charger rear panel. 3. Connect the AC adapter to a convenient power outlet. 4. The charger is ready to operate. Note that both STATUS LEDs remain dark. Refer to fig. 1. 4 Charging Rechargeable batteries (those included or those you may buy later) are delivered uncharged or Important! partially charged. Therefore, you will need to charge each new battery before using it. Each charging slot features a tricolor STATUS LED that indicates the current operating status of the respective charging slot (">…<" marks an LED flashing in the respective color): STATUS LED Status --orange red green >red< The charger is ready to operate, no transmitter is inserted in the charging slot. The battery inside the inserted transmitter is being checked. The battery is being charged. The battery is fully charged; the charging cycle is completed. Error. 1. Check that a rechargeable battery is inside the transmitter battery compartment. Do not try to charge a dry battery. If there is no battery inside the battery compartment, do not place the transmitter in a charging slot before you inserted a rechargeable battery into the transmitter. 2. Make sure to switch the transmitter OFF before placing it in a charging slot. This is the only way to guarantee optimum charging. 3. Insert the transmitter into the charging slot so that the display on the transmitter faces the LEDs on the charger. The charger will automatically power the transmitter via the charging contacts. 4. Never switch the transmitter ON during the charging cycle. This may cause the charger to falsely indicate a completed charging cycle before charging is actually completed. If the transmitter has been switched ON by accident during the charging cycle, 1. Remove the transmitter from the charger. 2. Switch the transmitter OFF. 3. Insert the transmitter into the charger. 4.1 STATUS LEDs Table 1: STATUS LED indications 4.2 Inserting a Transmitter with a Battery Inside Refer to fig. 2. Note: The charging cycle will start automatically as soon as you insert a transmitter with a rechargeable battery 4.3 Charging Cycle into the charger. Table 2: Charging cycle STATUS LED Status orange red green The voltage and temperature of the battery are being checked. The battery is being charged. Charging time is approx. 1.5 hours for a completely discharged battery and proportionately less for a partially discharged battery. Charging two batteries simultaneously will extend the charging time to 3 to 4 hours. The battery is fully...