29CTF05BS
2 – 1
TV29L-FG5RUService Manual29L-FG5RUMarketE
CHAPTER 2. IMPORTANT SERVICE NOTES
[1] IMPORTANT SERVICE NOTES
IMPORTANT SERVICE NOTES
Maintenance and repairing of thisreceiver should be done by
qualied service personnel only.
SERVICE OF HIGHVOLTAGE SYSTEM AND
PICTURE TUBE
When servicing thehigh voltage system,remove static charge from it by
connecting a 10K ohm resistor in series withaninsulated wire(such asatest
probe)between picture tube dag and 2nd anodelead. (AC line cord should
be disconnected from AC outlet.)
1. Picture tube in this receiver employs integral implosion protection.
2. Replace with the same type number of picture tube for continued safety.
3. Do not lift picture tube by the neck.
4. Handlethepicturetubeonlywhenwearingshatterproofgoggles and afterdischarging
the high voltage completely.
X-RAY
This receiver is designed so that any X-Ray radiation is kept to an absolute
minimum.Since certain malfunctions or servicing may produce potentially
hazardous radiation withprolonged exposure at close range, the following
precautions should be observed:
1. When repairing the circuit,please make sure do not increase the high voltage of the set
to more then 34.0kV (at beam 0 A).
2. To keep the set inanormaloperation, please make sure it'sfunctionat30.0kV1.5kV
(at beam1700 A). The set has been factory - adjusted to the above-mentionedhigh voltage.
*Ifthere isapossibility thatthehighvoltageuctuates asaresultofthe repaires,
never forget to check for such high voltage after the work.
3. Do notsubstituteapicturetubewithunauthorizedtypesand/orbrandswhichmaycause
excessive X-ray radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, performthefollowing safetychecks.
1. Inspectall leaddresstomakecertainthatleadsarenotpinched or that hardwareisnot
lodged between the chassis and other metal parts in the receiver.
2. Inspectallprotectivedevicessuchasnon-metalcontrol knobs,insulating shpapers,
cabinet backs, adjustment and compartment covers or shields, isolation resistor- ca-
pacity networks, mechanical insulators etc.
