Removing A Cassette When Tape Slack Occurs; Head Cleaning; Starting The Hard Disk Drive Under Cold Conditions - Sony DNW-A100 Operation Manual

8-1 Removing a Cassette When Tape Slack Occurs

If tape slack occurs in the unit, it is necessary to
remove the upper lid and sound baffle. This job
should always be entrusted to a technician who has
undergone service training.

8-2 Head Cleaning

To clean the video heads and audio heads, always use
the special-purpose Sony BCT-5CLN cleaning
cassette.
Follow the instructions with the cleaning cassette
carefully, as inappropriate use of the cleaning cassette
can damage the heads.
To carry out head cleaning, use the following
procedure.
1
Insert the cleaning cassette.
8-3 Starting the Hard Disk Drive Under Cold
Conditions
This unit includes a hard disk drive. If the hard disk
drive is started up under cold conditions (below 5°C/
41°F), its reliability may be severely reduced. This
unit includes a function to inhibit starting of the hard
disk drive when the temperature is below 5°C/41°F.
At the same time, a hard disk drive warming up
function operates, to warm up the disk drive. During
this interval, the DISK BUSY indicator on the lower
control panel flashes slowly. In this state, selecting the
disk as a device (DISK PROGRAM or DISK
MASTER) produces a message "HDD WARM UP" in
the time data display. When the hard disk drive
temperature reaches 5°C/41°F, the "HDD WARM UP"
message disappears, and the hard disk drive can now
be started.
For details, refer to Section 2-12, "How to Take Out the
Cassette When the Tape is Slacking," in the Maintenance
Manual (Part 1).
2
Press the EJECT button and PLAY button
simultaneously.
Head cleaning starts.
3
After a head cleaning operation which lasts for
about 5 seconds, the cleaning cassette is
automatically ejected.
Note
When carrying out head cleaning without using the
automatic cleaning function described above, be sure
to eject the cleaning cassette after use in order not to
damage the heads.
Note
If 30 minutes elapse with the hard disk drive warming
up function operating, and the hard disk drive still
cannot be started, the ambient temperature of the unit
may be too low (below –10°C/14°F). Power the unit
off, then warm up the surroundings before powering
the unit on again.
Chapter 8 Maintenance and Inspection
8-1