CPD-200GS
SAFETY CHECK-OUT
(US Model only)
After correcting the original service problem, performLEAKAGE TEST
the following safety checks before releasing the set to the The AC leakage from any exposed metal part to earth ground
customer:and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 microampere).
1. Check the area of your repair for unsoldered orLeakage current can be measured by any one of three methods.
poorly-soldered connections. Check the entire board
surface for solder splashes and bridges.
2. Check the interboard wiring to ensure that no wires1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
are Opinched� or contact high-wattage resistors.
use these instructions.
3. Check that all control knobs, shields, covers, ground
straps, and mounting hardware have been replaced.2. A battery-operated AC milliammeter. The Data Precision
Be absolutely certain that you have replaced all the245 digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of
insulators.
4. Look for unauthorized replacement parts,a VOM or battery-operated AC voltmeter. The "limit"
particularly transistors, that were installed duringindication is 0.75 V, so analog meters must have an accurate
a previous repair. Point them out to the customerlow voltage scale. The Simpson's 250 and Sanwa
SH-63Trd are examples of passive VOMs that are suitable.
and recommend their replacement.
5. Look for parts which, though functioning, showNearly all battery operated digital multimeters that have a
obvious signs of deterioration. Point them out to2V AC range are suitable. (See Fig. A)
the customer and recommend their replacement.
6. Check the line cords for cracks and abrasion.WARNING!!WARNING!!WARNING!!WARNING!!WARNING!!
Recommend the replacement of any such line cord
NEVER TURN ON THE POWER IN A CONDITION IN WHICH THE
to the customer.
DEGAUSS COIL HAS BEEN REMOVED.
7. Check the B+ and HV to see if they are specified
SAFETY-RELATED COMPONENT WARNING!!values. Make sure your instruments are accurate;
be suspicious of your HV meter if sets always haveCOMPONENTS IDENTIFIED BY SHADING AND MARK � ON
low HV.THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE
8. Check the antenna terminals, metal trim,PARTS LIST ARE CRITICAL FOR SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
Ometallized" knobs, screws, and all other exposed
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR INmetal parts for AC Leakage. Check leakage as
SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS
described below.
THAT ARE CRITICAL FOR SAFE OPERATION ARE IDENTIFIED
IN THIS MANUAL. FOLLOW THESE PROCEDURES WHENEVER
CRITICAL COMPONENTS ARE REPLACED OR IMPROPER
OPERATION IS SUSPECTED.
AVERTISSEMENT!!
To Exposed Metal
Parts on SetNE JAMAIS METTRE SOUS TENSION QUAND LA BOBINE DE
DEMAGNETISATION EST ENLEVEE.
ATTENTION AUX COMPOSANTS RELATIFS A LA
SECURITE!!
ACLES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE
0.15 ?F1.5 kWVoltmeterMARQUE � SUR LES SCHEMAS DE PRINCIPE, LES VUES
(0.75 V)
EXPLOSEES ET LES LISTES DE PIECES SONT D'UNE
IMPORTANCE CRITIQUE POUR LA SECURITE DU
FONCTION NEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST
Earth Ground
INDIQUE DANS LE PRESENT MANUEL OU DANS DES SUPPLE-
MENTS PUBLIES PAR SONY. LES REGLAGES DE CIRCUIT
DONT L'IMPORTANCE EST CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS
LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE
CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU
LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE.
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ACEC
