Hitachi UT42V702/D8MW, Руководство по обслуживанию

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D8MW
TABLE OF CONTENTS
3
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in HITACHI television
receivers 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 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
with a ! mark in the schematics and parts list in this
Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
HITACHI recommended replacement component, shown
in the parts list in this Service Manual, may create shock,
fire, X-radiation, 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 of HITACHI
Service Manuals may be obtained at a nominal charge
from HITACHI Sales Corporation.
UT42X902 and UT42V702 - LCD monitors
1. Follow the general caution recommendations from
“Safety precautions” section.
2. If necessary to replace Panel module, this work must
be started after the panel module and the AC/DC Power
supply becomes sufficiently cool.
3. Special care must be taken with the display area to
avoid damaging its surface.
4. The Panel Module shall not be touched with bare hands
to protect its surface from stains.
5. It is recommended to use clean soft gloves during the
replacing work of the Panel module in order to protect, not
only the display area of the panel module but also the
serviceman.
6. Signal, power supply P.W.B.’s and LCD driving circuits
P.W.B.’s are assembled on the rear side of the LCD
module, take special care with this fragile circuitry.
They are not strong enough to withstand harsh outer
mechanical forces. Extreme bending of the flexible
connectors must be avoided too.
SAFETY NOTICE
USE ISOLATION TRANSFORMER
WHEN SERVICING
POWER SOURCE
This LCD television is designed to operate on 120
Volts/60Hz, AC house current. Insert the power cord
into a 120 Volts/60Hz outlet.
NEVER CONNECT THE LCD TV TO OTHER THAN THE
SPECIFIED VOLTAGE OR TO DIRECT CURRENT AND
TO 50HZ. TO PREVENT ELECTRIC SHOCK, DO NOT
USE THE LCD TELEVISION’S (POLARIZED) PLUG
WITH AN EXTENSION CORD, RECEPTACLE, OR THE
OUTLETS UNLESS THE BLADES AND GROUND
TERMINAL CAN BE FULLY INSERTED TO PREVENT
BLADE EXPOSURE.