Sony NF421 User Manual

Battery life 

1)

Audio CD

22

20

ATRAC CD 

2)

41

38

MP3 CD 

3)

26

24

RADIO ON

30

1) Measured value using the JEITA standard (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 25).  

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.

•  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.

When using the AC power 

adaptor

You can use the player powered by the AC 
power adaptor without the battery.

to DC IN 3V

AC power adaptor

 

to AC outlet

Notes on the AC power adaptor

•  Disconnect all power sources when the player is 

not to be used for a long time.

•  Use only the AC power adaptor supplied.  If 

your player is not supplied with the one, use an 
AC-E30HG AC power adaptor (not available in 
Australia and Argentina).  If you use any other AC 
power adaptor, malfunction may occur.

Polarity of the plug

•  Do not touch the AC power adaptor with wet 

hands.

•  Connect the AC power adaptor to an easily 

accessible AC outlet.  Should you notice an 
abnormality in the AC power adaptor, disconnect it 
from the AC outlet immediately.

D-NF420/NF421.GB.2-318-768-11(1)