SAFETY CHECK-OUT
After correcting the original service problem,
perform the following safety checks before
releasing the set to the customer :
The material contained in this manual consists of
information that is the property of Sony Corporation.Check the metal trim, Ometallized� knobs, screws,
Sony Corporation expressly prohibits the duplication ofand all other exposed metal parts for AC
any portion of this manual or the use thereof for anyleakage. Check leakage as described below.
purpose other than the operation or maintenance of the
equipment described in this manual without the expressLEAKA GE TEST
written permission of Sony Corporation.
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to
Le matŽriel contenu dans ce manuel consiste enany exposed metal part having a return to
informations qui sont la propriŽtŽ de Sony Corporation.chassis, must not exceed 3.5 mA. Leakage
Sony Corporation interdit formellement la copie de current can be measured by any one of three
quelque partie que ce soit de ce manuel ou son emploi methods.
pour tout autre but que des opŽrations ou entretiens de
lOŽquipement ? moins dOune permission Žcrite de Sony1. A commercial leakage tester, such as the
Corporation.Simpson 229 or RCA WT -540A. Follow the
manufacturersO instructions to use these
instruments.
Das in dieser Anleitung enthaltene Material besteht aus2. A battery-operated AC milliammeter. The
Informationen, die Eigentum der Sony Corporation sind.Data Precision 245 digital multimeter is
Die Sony Corporation untersagt ausdrźcklich diesuitable for this job.
VervielfÅ ltigung jeglicher Teile dieser Anleitung oder den3. Measuring the voltage drop across a resistor
Gebrauch derselben fźr irgendeinen anderen Zweck alsby means of a VOM or battery-operated AC
die Bedienung oder W artung der in dieser Anleitung voltmeter. The Olimit� indication is 5.25 V, so
beschriebenen Ausrźstung ohne ausdrźcklicheanalog meters must have an accurate low-
schriftliche Erlaubnis der Sony Corporation.voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM
that is suitable. Nearly all battery operated
digital multimeters that have a 20 V AC range
are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
AC
0.15 mF1.5 kZvoltmeter
(5.25V)
Earth Ground
Fig A. Using an AC voltmeter to check AC leakage.
BKS-R3216/R1617/R1618
BKS-R3219/R3220/R1621
BKS-R3240A/R3242A/R3248A |
ACEC
