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
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid anmake sure not modify the circuit.
electric shock while the electric current is flowing.Repairing except indicates causes rising of high
3. USE THE DESIGNATED PARTSvoltage, and it emits an X-ray from the cathode-
ray tube.
The parts in this equipment have the specific
characters of incombustibility and withstand7. PERFORM A SAFETY CHECK AFTER
voltage for safety. Therefore, the part which isSERVICING
replaced should be used the part which has theConfirm that the screws, parts and wiring which
same character.were removed in order to service are put in the
Especially as to the important parts for safetyoriginal positions, or whether there are the
which is indicated in the circuit diagram or theportions which are deteriorated around the
table of parts as a mark, the designated partsserviced places serviced or not. Check the
must be used.insulation between the antenna terminal or
external metal and the AC cord plug blades.
4. PUT PARTS AND WIRES IN THEAnd be sure the safety of that.
ORIGINAL POSITION AFTER
ASSEMBLING OR WIRING(INSULATION CHECK PROCEDURE)
There are parts which use the insulation material1.Unplug the plug from the AC outlet.
such as a tube or tape for safety, or which are2.Remove the antenna terminal on TV and turn
assembled in the condition that these do noton the TV.
contact with the printed board. The inside wiring is3.Insulation resistance between the cord plug
designed not to get closer to the pyrogenic partsterminals and the eternal exposure metal
and high voltage parts. Therefore, put these parts[Note 2] should be more than 1M ohm by
in the original positions.using the 500V insulation resistance meter
5. TAKE CARE TO DEAL WITH THE[Note 1].
CATHODE-RAY TUBE4.If the insulation resistance is less than 1M
ohm, the inspection repair should be
In the condition that an explosion-proof cathode-required.
ray tube is set in this equipment, safety is secured[Note 1]
against implosion. However, when removing it orIf you have not the 500V insulation
serving from backward, it is dangerous to give a
shock. Take enough care to deal with it.resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal
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
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. |
ACEC
