4 Charging
the charger will not be subjected to vibrations during the charging cycle and will rest firmly on a hard surface.
6.Items 1 and 2 above notwithstanding, if you wish to extend the useful life of rechargeable batteries be sure to
•completely discharge the battery every time, i.e., not to charge the battery before the battery warn- ing appears on the transmitter display (see also the WMS 400 manual);
•charge the battery fully every time, i.e., not to remove it from the charger before the charging cycle is completed;
•avoid charging batteries at temperatures below +5°C or above +40°C. At these temperatures, the charging cycle will not start and the STATUS LED will be lit orange.
The charging cycle will be resumed automatically as soon as the battery temperature returns to the acceptable range.
•use no batteries other than the rechargeable types recommended in section 7 Specifications.
7.Rechargeable batteries will only reach their full capacity after several charging cycles.
8.If you insert a transmitter with a dry battery into the charger, the charging cycle will be stopped imme- diately after the battery test and a few minutes of charging. The STATUS LED will start flashing red. Although there is virtually no risk of damaging the transmitter or charger, it is good practice not to insert transmitters using dry batteries into the charger.
5 Cleaning
Important! 1. Disconnect the DC cable from the rear panel DC 5 V jack.
2. Use a cloth moistened (not wet!) with water to clean the surfaces of the charger.
Important! Never use caustic or scouring cleaners or cleaning agents containing alcohol or solvents since these may damage the enamel or plastic parts.
6 Troubleshooting
Problem |
| Possible Cause |
| Remedy |
All LEDs dark. | • | No defect. STATUS LEDs are not activat- | • | (Insert transmitter with rechargeable bat- |
|
| ed before you insert a transmitter with a |
| tery.) |
|
| battery into a charging slot. |
|
|
|
|
|
|
|
| 1. | AC adapter is not connected to power. | 1. | Connect power supply to convenient |
|
|
|
| power outlet. |
All LEDs dark although at least one | 2. | DC cable is no not connected to charger. | 2. | Connect DC cable to charger. |
3. | One or more charging contacts fail to | 3. | Check contacts for resilience, or clean | |
charging slot is loaded. |
| make contact with the transmitter. |
| contacts. |
| 4. | Internal error. | 4. | Disconnect power supply or DC cable, |
|
|
|
| wait for 10 seconds, and connect again. |
|
|
|
| Should the problem persist, contact your |
|
|
|
| nearest AKG Service Center. |
|
|
|
|
|
| • | Charging cycle has been stopped: |
|
|
| 1. | Transmitter uses dry battery. | 1. | Remove transmitter from charging slot; |
|
|
|
| replace dry with rechargeable battery. |
| 2. | Charging contacts contaminated. | 2. | Clean charging contacts on charger and |
|
|
|
| transmitter with soft cloth. |
| 3. | Inside temperature of battery is too high. | 3. | Allow battery/charger to cool down, |
STATUS LED flashing red. |
|
|
| charging cycle will resume when tempera- |
|
|
| ture returns to acceptable range. | |
|
|
|
| Should the problem persist, contact your |
|
|
|
| nearest AKG Service Center. |
| 4. | Inside temperature of charger is too high. | 4. | Make sure there is enough free space |
|
|
|
| around charger to provide adequate heat |
|
|
|
| dissipation. |
| 5. | Battery defective (voltage <0.5 V). | 5. | Replace battery. |
| 6. | Charger connected to incompatible power | 6. | Use original AC adapter supplied with |
|
| supply whose output voltage is too high: |
| charger. |
|
| both STATUS LEDs flashing red. |
|
|
| 7. | Charger defective. | 7. | Contact your nearest AKG Service Center. |
|
|
|
|
|
8 | CU 400 |
