AKG Acoustics CU4000 manual Charged, Trickle-charging Mode, Problem per, Release the Recover key

4 Charging

(Table 4)	CHARGE	RECOVER	Status	Action
	red	red	Recovery cycle: the	---
			BP 4000 is being
			charged for the sec-
			ond time.
	>red/orange<	red	Recovery cycle: the	---
			BP 4000 is being
			discharged.
	red	red	Recovery cycle: the	---
			BP 4000 is being
			charged once more.
	green	green	The recovery cycle	Remove the de-
			has been success-	vice/BP 4000 from
			fully completed and	the charger.
			the BP 4000 is fully
			charged. The
			charger switches to
			trickle-charging
			mode.
	green	>red<	The recovery cycle	Press and hold the
			failed. Although the	RECOVER key for
			BP 4000 is fully	3 seconds to restart
			charged, it has aged	the recovery cycle. If
			to the point that its	the problem per-
			capacity cannot be	sists, replace the
			accurately calcu-	BP 4000.
			lated anymore.	Refer to section 7
				Troubleshooting.

A recovery cycle takes about 8 to 10 hours.

Should the recovery cycle fail on the first run, it will be automatically repeated so the entire cycle will take about 15 to 17 hours. If the second recovery cycle fails, too, the RECOVER LED will start flashing red.

Note:	•	You can start a recovery cycle even if you are not requested to:
	-	during a normal charging cycle (CHARGE is lit red);
	-	after the successful completion of a charging or recovery cycle (CHARGE is lit green);
	-	after a failed recovery cycle (refer to Table 4).
	1.	Press and hold the RECOVER key (the RECOVER LED will be flashing green).
	2.	Release the RECOVER key,
	-	when the RECOVER LED changes to red (if you have pressed RECOVER during a nor-
		mal charging cycle) OR
	-	when CHARGE changes to orange (if you have pressed RECOVER after completion of
		a charging or recovery cycle).
		The recovery cycle will start (refer to Table 4).

24 CU 4000