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1
Safety Precaution for Repair
1-1 Cautions
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts have special safety-related characteristics. These are often not
evident from visual inspection nor can the protection afforded by them necessarily be obtained by using
replacement components rated for a higher voltage, wattage, etc. Replacement parts which have these
special safety characteristics are identified in this Service Manual. Electrical components having such
features are identified by marking with a
The use of a substitute replacement component which does not have the same safety characteristics
as the HITACHI recommended replacement one, shown in the parts list in this Service Manual, may
create shock, fire, or other hazards. Product safety is continuously under review and new instructions
are issued from time to time. For the latest information, always consult the current HITACHI Service
Manual. A subscription to, or additional copies for, HITACHI Service Manual may be obtained at a
nominal charge from HITACHI SALES CORPORATION.
CLASS 2M LASER RADIATION WHEN OPEN.
CAUTION
DO NOT STARE INTO THE BEAM OR VIEW
DIRECTLY WITH OPTICAL INSTRUMENTS.
CLASS 1
LASER PRODUCT
CAUTION
This product contains a laser diode of
higher class than 1. To ensure contin-
ued safety, do not remove any covers
or attempt to gain access to the in-
side of the product. Refer all servicing
to qualified personnel.
1-2 Use of Solder for Repairs
Lead-based solder is used for the printed circuit boards in this recorder.
Therefore, when servicing, use lead-based solder and set the temperature at the tip of soldering iron
30 - 40 °C lower than when using lead-free solder.
on the schematics and the parts list in this Service Manual.
CAUTION
There is a high-voltage section inside the DVD recorder.
When repairing or inspecting it, take great care to
prevent electric shock: Use an isolating transformer,
wear gloves, etc.
1 - 1
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