SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES6. AVOID AN X-RAY
As for the places which need special attentions,Safety is secured against an X-ray by consider-
they are indicated with the labels or seals on theing about the cathode-ray tube and the high
cabinet, chassis and parts. Make sure to keep thevoltage peripheral circuit, etc.
indications and notices in the operation manual.Therefore, when repairing the high voltage pe-
ripheral circuit, use the designated parts and
make sure not modify the circuit.2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an
Repairing except indicates causes rising of highelectric shock while the electric current is
voltage, and it emits an X-ray from the cathode-flowing.
3. USE THE DESIGNATED PARTSray tube.
7.PERFORM A SAFETY CHECK AFTER
The parts in this equipment have the specificSERVICING
characters of incombustibility and withstand
voltage for safety. Therefore, the part which isConfirm that the screws, parts and wiring which
replaced should be used the part which haswere removed in order to service are put in the
the same character.original positions, or whether there are the
Especially as to the important parts for safetyportions which are deteriorated around the
which is indicated in the circuit diagram or theserviced places serviced or not. Check the
table of parts as a mark, the designatedinsulation between the antenna terminal or
parts must be used.external metal and the AC cord plug blades.
And be sure the safety of that.
4. PUT PARTS AND WIRES IN THE(INSULATION CHECK PROCEDURE)
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING1.Unplug the plug from the AC outlet.
There are parts which use the insulation2.Remove the antenna terminal on TV and turn
material such as a tube or tape for safety, oron the TV.
which are assembled in the condition that3.Insulation resistance between the cord plug
these do not contact with the printed board.terminals and the eternal exposure metal
[Note 2] should be more than 1M ohm by
The inside wiring is designed not to get closerusing the 500V insulation resistance meter
to the pyrogenic parts and high voltage parts.[Note 1].
Therefore, put these parts in the original4.If the insulation resistance is less than 1M
positions.ohm, the inspection repair should be
5. TAKE CARE TO DEAL WITH THErequired.
CATHODE-RAY TUBE[Note 1]
In the condition that an explosion-proof cathode-If you have not the 500V insulation
ray tube is set in this equipment, safety isresistance meter, use a Tester.
secured against implosion. However, when[Note 2]
removing it or serving from backward, it is
dangerous to give a shock. Take enough care toExternal exposure metal: Antenna terminal
deal with it.Headphone jack
HOW TO ORDER PARTS
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.
IMPORTANT
When you exchange IC and Transistor with a heat sink, apply silicon grease on the contact section of
the heat sink. Befor applying new silicon grease, remove all the old silicon grease. (Old grease may
cause damages to the IC and Transistor.)
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ACEC
TOSHIBA
