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Charging Operation and LED Indication
Operator's Action CU-400 Status Charge LED on the BHT
On standby
⇓
Place the BHT on the CU-400.
⇓
Charging
⇓
After approx. 3 hours
when the CU-401/421 is powered from the
C adapter A
⇓
Charging completed
⇓
Remove the BHT. On standby
OFF
ON
(
in red
)
ON
(in green)
OFF
If the CU-421 is self-powered via the USB interface from the USB host (PC) or USB hub and the host PC
is in suspend mode, the CU-421 cannot charge the battery cartridge.
If the host PC switches to the suspend mode when the CU-421 is charging the battery cartridge, then the
CU-421 stops charging. When the host PC recovers from suspend mode, the CU-421 starts charging
again. To prevent the CU-421 from getting affected by suspend mode, use the dedicated AC adapter.
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