Safety Precautions; Servicing Notices On Checking; How To Order Parts - JVC AV-14F704 Service Manual

SAFETY PRECAUTIONS

1. KEEP THE NOTICES
As for the places which need special attentions, they are
indicated with the labels or seals on the cabinet, chassis and
parts. Make sure to keep the indications and notices in the
operation manual.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an electric shock
while the electric current is flowing.
3. USE THE DESIGNATED PARTS
The parts in this equipment have the specific characters of
incombustibility and withstand voltage for safety. Therefore,
the part which is replaced should be used the part which has
the same character.
Especially as to the important parts for safety which is
indicated in the circuit diagram or the table of parts as a
mark, the designated parts must be used.
4. PUT PARTS AND WIRES IN THE ORIGINAL
POSITION AFTER ASSEMBLING OR WIRING
There are parts which use the insulation material such as a
tube or tape for safety, or which are assembled in the condition
that these do not contact with the printed board. The inside
wiring is designed not to get closer to the pyrogenic parts and
high voltage parts.
Therefore, put these parts in the original positions.
5. TAKE CARE TO DEAL WITH THE
CATHODE-RAY TUBE
In the condition that an explosion-proof cathoderay tube is set
in this equipment, safety is secured against implosion.
However, when removing it or serving from backward, it is
dangerous to give a shock. Take enough care to deal with it.
Please include the following informations when you order parts. (Particularly the VERSION LETTER.)
1. MODEL NUMBER and VERSION LETTER
The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be found at the end of the SERIAL
NUMBER.
2. PART NO. and DESCRIPTION
You can find it in your SERVICE MANUAL.
Inferior silicon grease can damage IC's and transistors.
When replacing an IC's or transistors, use only specified silicon grease (YG6260M).
Remove all old silicon before applying new silicon.

SERVICING NOTICES ON CHECKING

!

HOW TO ORDER PARTS

IMPORTANT
No. 52130
6. AVOID AN X-RAY
Safety is secured against an X-ray by considering about the
cathode-ray tube and the high voltage peripheral circuit, etc.
Therefore, when repairing the high voltage peripheral circuit,
use the designated parts and make sure not modify the
circuit.
Repairing except indicates causes rising of high voltage, and
it emits an X-ray from the cathoderay tube.
7. PERFORM A SAFETY CHECK AFTER SERVICING
Confirm that the screws, parts and wiring which were
removed in order to service are put in the original positions, or
whether there are the portions which are deteriorated around
the serviced places serviced or not. Check the insulation
between the antenna terminal or external metal and the AC
cord plug blades. And be sure the safety of that.
(INSULATION CHECK PROCEDURE)
1. Unplug the plug from the AC outlet.
2. Remove the antenna terminal on TV and turn on the TV.
3. Insulation resistance between the cord plug terminals and
the eternal exposure metal [Note 2] should be more than
1M ohm by using the 500V insulation resistance meter
[Note 1].
4. If the insulation resistance is less than 1M ohm, the
inspection repair should be required.
[Note 1]
If you have not the 500V insulation resistance meter, use a
Tester.
[Note 2]
External exposure metal: Antenna terminal
Earphone jack
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