Sony MDR-IF540RK - Manual (Page 7)

Getting started
7 GB
Charging and usage hours
* 1 at 1 kHz, 1 mW+1 mW output when the
VIBRATION switch is set to OFF
* 2 hours required to fully charge empty
batteries
* 3 Time stated above may vary, depending
on the temperature or conditions of use.
Using the headphones with dry
batteries (sold separately)
Commercially available (size AAA) dry
batteries can also be used to power the
headphones. Install the batteries in the
same manner as described in steps 1
through 3 of “Charging the supplied
rechargeable batteries.”
When dry batteries are installed, the
battery charge function is not
activated.
Battery life
* 1 at 1 kHz, 1 mW+1 mW output when the
VIBRATION switch is set to OFF
* 2 Time stated above may vary, depending
on the temperature or conditions of use.
Battery
Sony alkaline battery
LR03/AM-4(N)
Sony manganese
battery R03/UM-4
(NU)
Approx. hours* 1
45 hours* 2
20 hours* 2
Notes on Batteries
• Do not charge a dry battery.
• Do not carry a dry battery together
with coins or other metallic objects. It
can generate heat if the positive and
negative terminals of the battery are
accidentally come into contact with
metallic objects.
• When you are not going to use the
unit for a long time, remove the
battery to avoid damage from battery
leakage or corrosion.
Checking the remaining battery
power
Pull up the self-adjusting band and
check the power indicator located on
the upper part of the right housing. The
batteries are still serviceable when the
indicator lights in red.
Charge the rechargeable batteries or
install new dry batteries if the power
indicator light dims, flashes, or the
sound becomes distorted or noisy.
Note
The rechargeable nickel-metal hydride
batteries should be replaced with new ones
when they last only half the expected time
after a proper recharging. The rechargeable
batteries type BP-HP550 are not
commercially available. You can order the
batteries from the store where you
purchased this system, or at your nearest
Sony dealer.
Approx.
charging hours
1 hour
16 hours* 2
Approx. usage
time*
1
1 hour and 45
minutes*
3
26 hours* 3