Sennheiser HDE 2020-D-II Instruction manual Tourguide 2020-D - Page 45

Tourguide 2020-D, Operation, LED color, Meaning

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Operation 4 2 5 10 LED color red green red (flashing) yellow/orange Meaning The built-in rechargeable battery is being charged. The built-in rechargeable battery is fully charged. The temperature of the built-in rechargeable battery is over 40 °C or below 3 °C. The built-in rechargeable battery is defective. Interrupt the charging process and contact your Sennheiser Service. Notes: • Charging a completely discharged rechargeable battery of the HDE 2020-D-II takes approx. 2½ hours at room temperature. • Charging a completely discharged rechargeable battery of the EK 2020-D-II takes approx. 5 hours at room temperature. • However, the charging process may take longer if: • the rechargeable battery is deep discharged and first has to be reconditioned by a deep discharge recovery charge, • the temperature of the built-in rechargeable battery is over 40 °C or below 3 °C, since, in order to protect the rechargeable battery, the charging process will be interrupted until the temperature is again within the permissible range (the LED 2 of the HDE 2020-D-II or the LED 4 of the EK 2020-D flashes red). • An additional temperature protection prevents overheating inside the charging case. If the temperature inside the charging case exceeds safety limits, the charging process will be interrupted and will only be restarted when the charging case has cooled down. • When not using the receivers for extended periods of time, charge them about every six months in order to prevent deep discharge damage to the rechargeable batteries. 44 | Tourguide 2020-D

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44 | Tourguide 2020-D
Operation
10
5
4
2
LED color
Meaning
red
The built-in rechargeable battery is being charged�
green
The built-in rechargeable battery is fully charged�
red (flashing)
The temperature of the built-in rechargeable battery is over
40 °C or below 3 °C�
yellow/orange
The built-in rechargeable battery is defective� Interrupt the
charging process and contact your Sennheiser Service�
Notes:
•
Charging a completely discharged rechargeable battery of the
HDE 2020-D-II takes approx� 2½ hours at room temperature�
•
Charging a completely discharged rechargeable battery of the EK 2020-D-II
takes approx� 5 hours at room temperature�
•
However, the charging process may take longer if:
•
the rechargeable battery is deep discharged and first has to be recondi-
tioned by a deep discharge recovery charge,
•
the temperature of the built-in rechargeable battery is over 40 °C or
below 3 °C, since, in order to protect the rechargeable battery, the
charging process will be interrupted until the temperature is again with-
in the permissible range (the LED
2
of the HDE 2020-D-II or the LED
4
of
the EK
 
2020-D flashes red)�
•
An additional temperature protection prevents overheating inside the
charging case� If the temperature inside the charging case exceeds safety
limits, the charging process will be interrupted and will only be restarted
when the charging case has cooled down�
•
When not using the receivers for extended periods of time, charge them
about every six months in order to prevent deep discharge damage to the
rechargeable batteries�