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CPD-E200E 参数 Datasheet PDF下载

CPD-E200E图片预览
型号: CPD-E200E
PDF下载: 下载PDF文件 查看货源
内容描述: Monitor_ICs : CXA2067S LM2415 CXD9516P H8D2957 uPC4558G2 TDA8177 uPC6757CS LA6500 -FA LA6500 -FA TEA1504 / N2 BA00AST - V5 TLP621D4 -Y- LF2T TL1431CZ -AP PQ12RD8S BA05T TA7805S CXA8070AP STK391-110 LA6510 CXD9528S CXA8071CP PST9143NL\n [Monitor_ICs:CXA2067S LM2415 CXD9516P H8D2957 uPC4558G2 TDA8177 uPC6757CS LA6500-FA LA6500-FA TEA1504/N2 BA00AST-V5 TLP621D4-Y-LF2T TL1431CZ-AP PQ12RD8S BA05T TA7805S CXA8070AP STK391-110 LA6510 CXD9528S CXA8071CP PST9143NL ]
分类和应用: PC
文件页数/大小: 46 页 / 3039 K
品牌: ETC [ ETC ]
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CPD-E200E  
SAFETY CHECK-OUT  
After correcting the original service problem, perform the fol-  
LEAKAGE TEST  
lowing safety checks before releasing the set to the customer:  
1. Check the area of your repair for unsoldered or poorly-sol-  
dered connections. Check the entire board surface for solder  
splashes and bridges.  
The AC leakage from any exposed metal part to earth ground  
and from all exposed metal parts to any exposed metal part hav-  
ing a return to chassis, must not exceed 0.5 mA (500  
microampers).  
2. Check the interboard wiring to ensure that no wires are  
“pinched” or contact high-wattage resistors.  
Leakage current can be measured by any one of three methods.  
1. A commercial leakage tester, such as the Simpson 229 or  
RCA WT-540A. Follow the manufacturers’ instructions to  
use these instruments.  
3. Check that all control knobs, shields, covers, ground straps,  
and mounting hardware have been replaced. Be absolutely  
certain that you have replaced all the insulators.  
2. A battery-operated AC milliammeter. The Data Precision  
245 digital multimeter is suitable for this job.  
4. Look for unauthorized replacement parts, particularly tran-  
sistors, that were installed during a previous repair. Point  
them out to the customer and recommend their replacement.  
5. Look for parts which, though functioning, show obvious  
signs of deterioration. Point them out to the customer and  
recommend their replacement.  
3. Measuring the voltage drop across a resistor by means of a  
VOM or battery-operated AC voltmeter. The “limit” indica-  
tion is 0.75 V, so analog meters must have an accurate low-  
voltage scale. The Simpson 250 and Sanwa SH-63Trd are  
examples of a passive VOMs that are suitable. Nearly all  
battery operated digital multimeters that have a 2 V AC  
range are suitable. (See Fig. A)  
6. Check the line cords for cracks and abrasion. Recommend  
the replacement of any such line cord to the customer.  
7. Check the B+ and HV to see if they are specified values.  
Make sure your instruments are accurate; be suspicious of  
your HV meter if sets always have low HV.  
WARNING!!  
NEVER TURN ON THE POWER IN A CONDITION IN  
WHICH THE DEGAUSS COIL HAS BEEN REMOVED.  
8. Check the antenna terminals, metal trim, “metallized”  
knobs, screws, and all other exposed metal parts for AC  
Leakage. Check leakage as described below.  
SAFETY-RELATED COMPONENT WARNING!!  
COMPONENTS IDENTIFIED BY SHADING AND MARK  
¡ ON THE SCHEMATIC DIAGRAMS, EXPLODED  
VIEWS AND IN THE PARTS LIST ARE CRITICAL FOR  
SAFE OPERATION. REPLACE THESE COMPONENTS  
WITH SONY PARTS WHOSE PART NUMBERS AP-  
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-  
MENTS PUBLISHED BY SONY. CIRCUIT ADJUST-  
MENTS THAT ARE CRITICAL FOR SAFE OPERATION  
ARE IDENTIFIED IN THIS MANUAL. FOLLOW THESE  
PROCEDURES WHENEVER CRITICAL COMPONENTS  
ARE REPLACED OR IMPROPER OPERATION IS SUS-  
PECTED.  
To Exposed Metal  
Parts on Set  
AC  
Voltmeter  
(0.75 V)  
0.15 µF  
1.5 k  
Earth Ground  
Fig. A. Using an AC voltmeter to check AC leakage.  
– 3 –  
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