Sony D-NF431 Manual

To remove the battery

Remove the battery as illustrated below.

Checking the remaining 

power of the battery

The remaining power of the battery is 
indicated in the display as shown below.  As 
the black indicator section decreases, the 
remaining power is depleted further.

 

 

 

 

 

 

 

 

 

 “Low Battery” *

* Beep sounds.

When the battery is depleted, replace it with 
a new one.

•  The display shows the approximate battery power 

remaining.  For example, one section does not 
always indicate one-fourth of the battery power.

•  Depending on the operating conditions, the display 

may increase or decrease relative to the actual 
power remaining.

Battery life 

1)

Audio CD

22

20

ATRAC CD 

2)

41

41

MP3 CD 

3)

31

31

RADIO ON 

32

1) Measured value using the JEITA (Japan 

Electronics and Information Technology 
Industries Association) 
Playing time shown is approximate hours, when 
you use the player on a flat and stable surface and 
“POWER SAVE” is set to “ON” ( page 28).  

This value varies depending on how the player 
is used.

2) Recorded at 48 kbps
3) Recorded at 128 kbps

Notes on dry batteries

•  Do not throw the batteries into a fire.
•  Do not carry batteries in a pocket, etc. with coins 

or other metallic objects.  The battery can generate 
heat if its positive and negative terminals are 
accidentally allowed to come into contact with a 
metallic object.

•  Do not mix new batteries with old ones.
•  Do not use different types of batteries together.
•  When the batteries are not to be used for a long 

time, remove them.

•  If battery leakage occurs, wipe off any deposit 

left in the battery compartment, and install new 
batteries.  If the deposit adheres to your skin, wash 
it off thoroughly.

Continued 

D-NF430/NF431.GB.2-663-956-11(1)