Sony HCD-L7HD Service Manual page 6

HCD-L7HD
NOTES ON HARD DISC
The hard disc has a high storage density and reads or writes data in
a short time with compared to the floppy disk. On the other hand, it
may be easily damaged by mechanical vibration, shock or dust.
Keep the hard disc away from magnets.
Although the hard disc has safety devices to prevent losing data due
to mechanical vibration, shock or dust, you should be careful when
handling the recorder. Avoid damaging your data:
• Do not cause a shock or strong vibration to the recorder.
• Do not place the recorder in a location subject to mechanical
vibration or in unstable location.
• Do not move the recorder while the power is on.
• Do not turn off the recorder while the HDD indicator lights up
blue.
• Do not use the recorder in a place subject to extreme changes in
temperature (temperature gradient less than 18 °F (10 °C)/ hour).
• K eep any magnetic objects, including a TV set, speaker, magnet,
and magnetic bracelet, away from the recorder.
If the hard disc is damaged, data cannot be restored or recovered.
NOTES ON DIGITAL AMPLIFIER
Cause of the Digital Amplifier, do not connect the speaker terminals
to the chasis, or connect the terminals of the right speakers with
those of the left speaker. (None of the speaker terminals is the
negative(–) terminal of the speaker. So,do not connect the earth lead
of this unit to the speaker terminals.)
6
Unleaded solder
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.