PRODUCT SAFETY SERVICING GUIDELINES FOR AUDIOVIDEO PRODUCTS
950ART94
1009
CAUTION: DO NOT ATTEMPT TO MODIFY THIS PRODUCT IN ANY WAY. NEVERSUBJECT : X-RADIATION
PERFORM CUSTOMIZED INSTALLATIONS WITHOUT MANUFACTURERS APPROVAL.
UNAUTHORIZED MODIFICATIONS WILL NOT ONLY VOID THE WARRANTY, BUT MAY1. BE SURE PROCEDURES AND INSTRUCTIONS TO ALL SERVICE PERSONNEL COVER
LEAD TO YOUR BEING LIABLE FOR ANT RESULTING PROPERTY DAMAGE OR USERTHE SUBJECT OF X-RADIATION. THE ONLY POTENTIAL SOURCE OF X-RAYS IN
INJURY.CURRENT T.V. RECEIVERS IS THE PICTURE TUBE. HOWEVER, THIS TUBE DOES NOT
EMIT X-RAYS WHEN THE HIGH VOLTAGE IS AT THE FACTORY SPECIFIED LEVEL. THE
SERVICE WORK SHOULD BE PERFORMED ONLY AFTER YOU ARE THOROUGHLY
PROPER VALUE IS GIVEN IN THE APPLICABLE SCHEMATIC. OPERATION AT HIGHER
FAMILIAR WITH ALL OF THE FOLLOWING SAFETY CHECKS AND SERVICINGVOLTAGES MAY CAUSE A FAILURE OF THE PICTURE TUBE OR HIGH VOLTAGE
GUIDELINES. TO DO OTHERWISE, INCREASES THE RISK OF POTENTIAL HAZARDS AND
SUPPLY AND, UNDER CERTAIN CIRCUMSTANCES, AMY PRODUCE RADIATION IN
INJURY TO THE USER.
EXCESS OF DESIRABLE LEVELS.
WHILE SERVICING, USE AN ISOLATION TRANSFORMER FOR PROTECTION FROM A.C.
LINE SHOCK.2. ONLY FACTORY SPECIFIED C.R.T ANODE CONNECTORS MUST BE USED.
DEGAUSSING SHIELDS ALSO SERVE AS X-RAY SHIELD IN COLOR SETS. ALWAYS RE-
SAFETY CHECKS
INSTALL THEM.
AFTER THE ORIGINAL SERVICE PROBLEM HAS BEEN CORRECTED, A CHECK SHOULD
3. IT IS ESSENTIAL THAT SERVICE PERSONNEL HAVE AVAILABLE AN ACCURATE AND
BE MADE OF THE FOLLOWING:
RELIABLE HIGH VOLTAGE METER. THE CALIBRATION OF THE METER SHOULD BE
SUBJECT:FIRE & SHOCK HAZARDCHECKED PERIODICALLY AGAINST A REFERENCE STANDARD. SUCH AS THE ONE
AVAILABLE AT YOUR DISTRIBUTOR.
1. BE SURE THAT ALL COMPONENTS ARE POSITIONED IN SUCH A WAY AS TO AVOID
POSSIBILITY OF ADJACENT COMPONENT SHORTS. THIS IS ESPECIALLY IMPORTANT4. WHEN THE HIGH VOLTAGE CIRCUITRY IS OPERATING PROPERLY THERE IS NO
ON THOSE MODULES WHICH ARE TRANSPORTED TO AND FROM THE REPAIR SHOP.POSSIBILITY OF AN X-RADIATION PROBLEM. EVERY TIME A COLOR CHASSIS IS
2. NEVER RELEASE A REPAIR UNLESS ALL PROTECTIVE DEVICES SUCH ASSERVICED, THE BRIGHTNESS SHOULD BE RUN UP AND DOWN WHILE MONITORING
INSULATORS, BARRIERS, COVERS, SHIELDS, STRAIN RELIEFS, POWER SUPPLYTHE HIGH VOLTAGE WITH A METER TO BE CERTAIN THAT THE HIGH VOLTAGE DOES
CORDS, AND OTHER HARDWARE HAVE BEEN REINSTALLED PER ORIGINAL DESIGN.NOT EXCEED THE SPECIFIED VALUE AND THAT IT IS REGULATING CORRECTLY. WE
BE SURE, THAT THE SAFETY PURPOSE OF THE POLARIZED LINE PLUG HAS NOTSUGGEST THAT YOU AND YOUR SERVICE ORGANIZATION REVIEW TEST
BEEN DEFEATED.PROCEDURES SO THAT VOLTAGE REGULATION IS ALWAYS CHECKED AS A
STANDARD SERVICING PROCEDURE, AND THAT THE HIGH VOLTAGE READING BE
3. SOLDERING MUST BE INSPECTED TO DISCOVER POSSIBLE COLD SOLDER JOINTS,
RECORDED ON EACH CUSTOMERS INVOICE.
SOLDER SPLASHES OF SHARP SOLDER POINTS. BE CERTAIN TO REMOVE ALL
LOOSE FOREIGN PARTICLES.5. WHEN TROUBLESHOOTING AND MAKING TEST MEASUREMENTS IN A PRODUCT WITH
4. CHECK FOR PHYSICAL EVIDENCE OF DAMAGE OR DETERIORATION TO PARTS ANDA PROBLEM OF EXCESSIVE HIGH VOLTAGE, AVOID BEING UNNECESSARILY CLOSE
COMPONENTS, FOR FRAYED LEADS, DAMAGED INSULATION (INCLUDING A.C. CORD),TO THE PICTURE TUBE AND THE HIGH VOLTAGE SUPPLY. DO NOT OPERATE THE
AND REPLACE IF NECESSARY. FOLLOW ORIGINAL LAYOUT, LEAD LENGTH ANDPRODUCT LONGER THAN IS NECESSARY TO LOCATE THE CAUSE OF EXCESSIVE
DRESS.VOLTAGE.
5. NO LEAD OR COMPONENT SHOULD TOUCH A RECEIVING TUBE OR A RESISTOR6. REFER TO HV, B + AND SHUTDOWN ADJUSTMENT PROCEDURES DESCRIBED IN THE
RATED AT 1 WATT OR MORE. LEAD TENSION AROUND PROTRUDING METALAPPROPRIATE SCHEMATIC AND DIAGRAMS (WHERE USED).
SURFACES MUST BE AVOIDED.
6. ALL CRITICAL COMPONENTS SUCH AS FUSES, FLAMEPROOF RESISTOR,
CAPACITORS, ETC. MUST BE REPLACED WITH EXACT FACTORY TYPES. DO NOT USESUBJECT : IMPLOSION
REPLACEMENT COMPONENTS OTHER THAN THOSE SPECIFIED OR MAKE
UNRECOMMENDED CIRCUIT MODIFICATIONS.1. ALL DIRECT VIEWED PICTURE TUBES ARE EQUIPPED WITH AN INTEGRAL IMPLOSION
7. AFTER RE-ASSEMBLY OF THE STE ALWAYS PERFORM AN A.C. LEAKAGE TEST ONPROTECTION SYSTEM. BUT CARE SHOULD BE TAKEN TO AVOID DAMAGE DURING
ALL EXPOSED METALLIC PARTS OF THE CABINET. (THE CHANNEL SELECTOR KNOB,INSTALLATION. AVOID SCRATCHING THE TUBE. OF SCRATCHED REPLACE IT.
ANTENNA TERMINALS, HANDLE AND SCREWS) TO BE SURE THE SET IS SAFE TO
2. USE ONLY RECOMMENDED FACTORY REPLACEMENT TUBES.
OPERATE WITHOUT DANGER OF ELECTRICAL SHOCK. DO NOT USE A LINE
ISOLATION TRANSFORMER DURING THIS TESTUSE AN A.C. VOLTMETER,
HAVING 5000 OHMS PER VOLT OR MORE SENSITIVITY, IN THE FOLLOWING MANNER :
CONNECT A 1500 OHM 10 WATT RESISTOR, PARALLELED BY A .15 MFD. 150V A.C.SUBJECT : TIPS ON PROPER INSTALLATION
TYPE CAPACITOR BETWEEN A KNOWN GOOD EARTH GROUND (WATER POPE,
1. NEVER INSTALL ANY PRODUCT IN A CLOSED-IN RECESS, CUBBYHOLE OR CLOSELY
CONDUIT, ETC.) AND THE EXPOSED METALLIC PARTS, ONE AT A TIME. MEASURE
FITTING SHELF SPACE, OVER OR CLOSE TO HEAT DUCT, OR IN THE PATH OF
THE A.C. VOLTAGE ACROSS THE COMBINATION OF 1500 OHM RESISTOR AND .15
MFD CAPACITOR. REVERSE THE A.C. PLUG AND REPEAT A.C. VOLTAGEHEATED AIR FLOW.
MEASUREMENTS FOR EACH EXPOSED METALLIC PART. VOLTAGE MEASURED MUST2. AVOID CONDITIONS OF HIGH HUMIDITY SUCH AS: OUTDOOR PATIO INSTALLATIONS
NOT EXCEED .75 VOLTS R.M.S THIS CORRESPONDS TO 0.5 MILLIAMP A.C. NAY VALUEWHERE DEW IS A FACTOR, NEAR STEAM RADIATORS WHERE STEAM LEAKAGE IS A
EXCEEDING THIS LIMIT CONSTITUTES A POTENTIAL SHOCK HAZARD AND MUST BEFACTOR, ETC.
CORRECTED IMMEDIATELY.
3. AVOID PLACEMENT WHERE DRAPERIES MAY OBSTRUCT REAR VENTING. THE
A.C. VOLTMETER
CUSTOMER SHOULD ALSO AVOID THE USE OF DECORATIVE SCARVES OR OTHER
A.C. VOLTMETERCOVERINGS WHICH MIGHT OBSTRUCT VENTILATION.
4. WALL AND SHELF MOUNTED INSTALLATIONS USING A COMMERCIAL MOUNTING KIT,
MUST FOLLOW THE FACTORY APPROVED MOUNTING INSTRUCTIONS. A PRODUCT
MOUNTED TO A SHELF OR PLATFORM MUST RETAIN ITS ORIGINAL FEET (OR THE
EQUIVALENT THICKNESS IN SPACERS)TO PROVIDE ADEQUATE AIR FLOW ACROSS
THE BOTTOM, BOLTS OR SCREWS USED FOR FASTENERS MUST NOT TOUCH ANY
0.15?FPARTS OR WIRING. PERFORM LEAKAGE TEST ON CUSTOMIZED INSTALLATIONS.
GOOD EARTH GROUND
PLACE THIS PROBEON EACH EXPOSED
SUCH AS THE WATER1500 OHM5. CAUTION CUSTOMERS AGAINST THE MOUNTING OF A PRODUCT ON SLOPING SHELF
PIPE, CONDUIT, ETC.METAL PARTOR A TILTED POSITION, UNLESS THE PRODUCT IS PROPERLY SECURED.
10WATT
SUBJECT : GRAPHIC SYMBOLS6. A PRODUCT ON A ROLL-ABOUT CART SHOULD BE STABLE ON ITS MOUNTING TO THE
CART. CAUTION THE CUSTOMER ON THE HAZARDS OF TRYING TO ROLL A CART
THE LIGHTNING FLASH WITH ARROWHEAD SYMBOL, WITHINWITH SMALL CASTERS ACROSS THRESHOLDS OR DEEP PILE CARPETS.
AN EQUILATERAL TRIANGLE, IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED7. CAUTION CUSTOMERS AGAINST THE USE OF A CART OR STAND WHICH HAS NOT
DANGEROUS VOLTAGETHAT MAY BE OF SUFFICIENTBEEN LISTED BY UNDERWRITERS LABORATORIES. INC. FOR USE WITH THEIR
MAGNITUDE TO CONSTITUTE A RISK OF ELECTRIC SHOCK.SPECIFIC MODEL OF TELEVISION RECEIVER OR GENERICALLY APPROVED FOR USE
WITH T.V.S OF THE SAME OR LARGER SCREEN SIZE.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL
TRIANGLE IS INTENDED TO ALERT THE SERVICE8. CAUTION CUSTOMERS AGAINST THE USE OF EXTENSION CORDS, EXPLAIN THAT A
PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETYFOREST OF EXTENSIONS SPROUTING FROM A SINGLE OUTLET CAN LEAD TO
INFORMATION ON SERVICE LITERATURE.DISASTROUS CONSEQUENCES TO HOME AND FAMILY.
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