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I. Safety Instructions
PRECAUTIONS DURING SERVICING WARNING:
1. In addition to safety, other parts and assemblies are
specified for conformance with such regulations as Before servicing this TV receiver, read the X-RAY

those applying to spurious radiation. These must also RADIATION PRECAUTION, SAFETY INSTRUCTION and

be replaced only with specified replacements. PRODUCT SAFETY NOTICE.

Examples: RF converters, tuner units, antenna se-
lection switches, RF cables, noise-blocking capaci- X-RAY RADIATION PRECAUTION
tors, noise-blocking filters, etc. 1. Excessively high can produce potentially hazardous

2. Use specified internal Wiring. Note especially: X-RAY RADIATION. To avoid such hazards, the high

1) Wires covered with PVC tubing voltage must not exceed the specified limit. The

2) Double insulated wires normal value of the high voltage of this TV receiver

3) High voltage leads is 26.5 kV at zero beam current (minimum brightness).
3. Use specified insulating materials for hazardous live The high voltage must not exceed 30 kV under any

parts. Note especially: circumstances. Each time when a receiver requires

1) Insulating Tape servicing, the high voltage should be checked. The

2) PVC tubing reading of the high voltage is recommended to be

3) Spacers (insulating barriers) recorded as a part of the service record, It is important
4) Insulating sheets for transistors to use an accurate and reliable high voltage meter.

5) Plastic screws for fixing micro switches 2. The only source of X-RAY RADIATION in this TV

4. When replacing AC primary side components (trans- receiver is the picture tube. For continued X-RAY

formers, power cords, noise blocking capacitors, RADIATION protection, the replacement tube must be

etc.), wrap ends of wires securely about the termi- exactly the same type as specified in the parts list.
nals before soldering. 3. Some parts in this TV receiver have special safety
related characteristics for X-RADIATION protection.
For continued safety, the parts replacement should
be under taken only after referring the PRODUCT
SAFETY NOTICE.
5. Make sure that wires do not contact heat generating
parts (heat sinks, oxide metal film resistors, fusible SAFETY INSTRUCTION

resistors, etc.) The service should not be attempted by anyone

6. Check if replaced wires do not contact sharply edged unfamiliar with the necessary instructions on this TV

or pointed parts. receiver. The following are the necessary instructions

7. Make sure that foreign objects (screws, solder to be observed before servicing.
droplets, etc.) do not remain inside the set. 1. An isolation transformer should be connected in the
power line between the receiver and the AC line when

MAKE YOUR CONTRIBUTION TO PROTECT THE a service is performed on the primary of the converter

ENVIRONMENT transformer of the set.

Used batteries with the ISO 2. Comply with all caution and safety related provided
symbol for recycling as well on the back of the cabinet, inside the cabinet, on the

as small accumulators (rechargeable chassis or picture tube.

batteries), mini-batteries (cells) and starter batteries 3. To avoid a shock hazard, always discharge the

should not be thrown into the garbage can. Please picture tube's anode to the chassis ground before

save them at an appropriate depot. removing the anode cap.
4. Completely discharge the high potential voltage of the
picture tube before handling. The picture tube is a
vacuum and if broken, the glass will explode.
5. When replacing a MAIN PCB in the cabinet, always
be certain that all protective are installed properly
such as control knobs, adjustment covers or shields,
barriers, isolation resistor networks etc.
6. When servicing is required, observe the original lead
dressing. Extra precaution should be given to assure
correct lead dressing in the high voltage area.




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7. Keep wires away from high voltage or high tempera-
ture components.
8. Before returning the set to the customer, always
perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas,
terminals, screwheads, metal overlay, control shafts,
etc., to be sure the set is safe to operate without
danger of electrical shock. Plug the AC line cord
directly to the AC outlet (do not use a line isolation
transformer during this check). Use an AC voltmeter
having 5K ohms volt sensitivity or more in the
following manner.
Connect a 1.5K ohm 10 watt resistor paralleled by
a 0.15