Sony Walkman MZ-NF810CK Operating Instructions Manual page 19

For models supplied with the AC plug adaptor
If the AC power adaptor does not fit the wall outlet, use the AC plug adaptor.
Using the dry battery
Attach the dry battery case to the recorder.
Rear of the
recorder
Insert a LR6 (size AA) alkaline dry battery.
To operate the recorder for the longest possible time, use the dry battery together with a
fully charged rechargeable battery.
3
Make connections and unlock the
control.
1
Connect the headphones/earphones
with the remote control to i.
Connect firmly
2
1
HOLD
Insert the battery minus end first.
2
Slide HOLD to the opposite direction of
the arrow (.) to unlock the controls.
HOLD
To i
Connect firmly
19