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XL-SV320SL/SV305GD

XL-SV308BU

2

RC-EZ31

1. This design of this product contains special hardware and many circuits and components specially for

safety purposes.  For continued protection, no changes should be made ti the original design unless
authorised in writing by the manufacturer.  Replacement parts must be identical to those used in the 
original circuits.  Services should be performed by qualified personel only.

2.  Alterations of the design or circuitry of the product should not be made.  Any design alterations of the 

product should not be made.  Any design alterations or additions will void the manufacturer's warranty
and will further relieve the manufacturer of responsibility for personal injury or property damage
resulting therefrom.

3. Many eletrical and mechanical parts in the products have special safety-related characteristics.

These characteristics are often not evident from visual inspection nor can the protection afforded by
them necessarily be obtain by using replaement components rated for higher voltage, the Parts
List of Service manual. Electrical components having such features ate identified by the shading on the 
schematics and by ( 

) on the parts List in the Service Manual.  The use of a substitute

repalcement which does not have the same safety characteristics as the recommended replacement 
parts shown in the Parts List of Service manual may create shock, fire, or other hazards.

4. The leads in the products are routed and dressed with ties, clamps, tubing's, barriers and the like to 

be separated from live parts, high temperatures parts, moving parts and/or sharp edges for the 
prevention of electric shcok and fire hazard.  When service is required, the original leat routing and 
dress should be observed, and it should be confirmed that they have been returned to normal, after
re-assembling.

5. Leakage current check (Electrical Shock hazard testing)

After re-assembling the product, always perform an isolation check on the exposed metap Parts of the 
product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.)
to be sure the product is safe to operate without danger of electrical shock.
Do not use a line isloation transformer during this check.

Plug the AC line cord directly into the AC outlet.  Using a "Leakage Current Tester", measure the
leakage current from each ecposed metal parts of the cabinet, particularly and exposed metal
part having a return path to the chassis, to a known good earth ground.  Any leakage current must
not exceed 0.5mA AC (r.m.s.)
Alternate check method
Plug the AC line cord directly into the AC outlet.  Use an AC voltmeter having, 1,000 ohms per
volt or more sensitvity in the following manner.  Connect a 1,500 ohm 10W resistor paralleled by a
0.15uF AC-type capacitor between an exposed
metal part and a known good earth ground.
Measure the AC voltage across the resistor with
the AC voltmeter.
Move the resistor connection to each exposed
metal part, particularly and exposed metal part
having a return path to te chassis and
measure the AC voltage across the resistor.  Now,
reverse the plug in the AC outlet and repeat
each measurement.  Voltage measured Any must
not exceed 0.75 V AC (r.m.s.).  This corresponds
to 0.5 mA AC (r.m.s.).

1. This equipment has been designed and manufactured to meet international safety standards.
2. It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
3. repairs must be made in accordance with the relevant safety standards.
4. It is essential that safety critical components are replaced by approved parts.
5. It mains voltage selector is provided, check setting for local voltage.

CAUTION

Burrs formed during moulding may be left over on some parts of the chassis.  Therefore,
pay attention to such burrs in the case of performing repair of this system.

Safety Precautions

Warning

Содержание RC-EZ31A

Страница 1: ... SERVICE POLICY No service part is available for this model Based on One to One exchange policy Contents Safety precaution 2 Preventing static electricity 3 Disassembly procedure 4 Flow of function operation until TOC read 5 Voltage charts 6 Block diagram 8 Wiring connection 9 Schematic diagrams 11 Illustration of packing and parts list 18 ...

Страница 2: ...bling 5 Leakage current check Electrical Shock hazard testing After re assembling the product always perform an isolation check on the exposed metap Parts of the product antenna terminals knobs metal cabinet screw heads headphone jack control shafts etc to be sure the product is safe to operate without danger of electrical shock Do not use a line isloation transformer during this check Plug the AC...

Страница 3: ...cikup 1 In order to maintain quality during transport and before installation both sides of the laser diode on the replacement optical pickup are storted After replacement return the shorted parts to their original condition Refer to the text 2 Do not use a tester to check the condition of the laserdiode in the optical pickup The tester s internal power source can easily destory the laser diode 1 ...

Страница 4: ...ove the back cabinet Screw A 1 Open battery cover and remove 3 screws on the bottom cabinet Screw A 2 Remove 5 screws on back Screw B Screw B Remove the top panel 1 Remove 3 screws to take Screw C out the top panel with the board Screw C Then the unit is disassembled ...

Страница 5: ...ower Key Slider turns REST SW ON Automatic tuning of TE offset Laser ON Detection of disc Automatic tuning of Focus offset Automatic measurement of focus A curve amplitude Disc is rotated Focus servo ON Tracking servo ON Automatic measurement of Tracking error amplitude Automatic tuning of Tracking error balance Automatic tuning of Focus error balance Automatic tuning of Focus error gain Automatic...

Страница 6: ...3 2 39 2 41 pin NO 61 62 63 64 Votage v 2 23 3 79 0 22 4 94 IC No Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 DC12V 3 55 3 13 2 15 2 15 6 60 5 18 2 18 0 10 2 19 2 19 3 65 3 15 0 10 6 85 0 90 0 90 3 50 3 30 2 20 2 20 Item 21 22 23 24 25 26 27 28 DC12V 7 34 7 34 2 20 2 20 2 20 3 40 3 40 0 10 IC No pin NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Votage v 0 85 0 00 0 31 5 44 0 51...

Страница 7: ... C E B C E B C E B C 8 50 9 11 11 96 0 00 0 70 0 00 0 00 0 00 0 70 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 0 00 E B C E B C E B C E B C 0 00 0 00 0 00 11 93 11 20 0 02 4 90 0 00 0 00 0 00 0 70 0 00 E B C E B C E B C E B C E B C E B C 13 40 12 70 13 36 4 57 5 24 8 47 IC301 UTC8227 CD PLAY IC301 UTC8227 CASS PLAY IC301 UTC8227 TUNER Votage v Q401 D2061 CD PLAY IC201 BA3308 CASS PLAY Q329 9014 CDPLAY...

Страница 8: ...XL SV320SL SV305GD XL SV308BU 8 RC EZ31 Block Diagram ...

Страница 9: ...RC EZ31 9 Wiring Connections US UX version ...

Страница 10: ...XL SV320SL SV305GD XL SV308BU 10 RC EZ31 Wiring Connections A version ...

Страница 11: ...RC EZ31 11 Schematic Diagrams Main Circuit US UX Version ...

Страница 12: ...XL SV320SL SV305GD XL SV308BU 12 RC EZ31 Main Circuit A Version ...

Страница 13: ...RC EZ31 13 Tuner Circuit US UX Version ...

Страница 14: ...XL SV320SL SV305GD XL SV308BU 14 RC EZ31 Tuner Circuit A Version ...

Страница 15: ...RC EZ31 15 Cass Circuit ...

Страница 16: ...XL SV320SL SV305GD XL SV308BU 16 RC EZ31 CD Circuit ...

Страница 17: ...RC EZ31 17 Control Circuit ...

Страница 18: ...Remote Control Unit P 11 Poly Bag P 12 Gift Box G B P 13 G B Bar Code Label 612 080350 000 612 080348 000 P 14 Battery AAA x 2pcs P 15 POP Label Remarks Alt items will be used alternatively depends on the lead time 163 200415 900 676 070100 040 629 080284 000 JVC LVT1524 001A LVT1524 002A RM SRCEZ31A 891 EZ3111 010 874 310000 000 874 310000 000 676 040130 044 678 255175 040 P12 P1 P8 P9 P2 P6 P7 P...

Страница 19: ... JVC LVT1524 003A P 8 Poly Bag 676 070100 040 P 9 Remote Control Unit P 10 Poly Bag RM SRCEZ31A P 11 G B Bar Code Label 612 080352 000 P 12 Gift Box G B 891 EZ3111 020 P 13 Battery AAA x 2pcs 163 200415 900 Illustraction of packing and parts list A Version P11 P1 P7 P8 P2 P5 P6 P13 P10 P9 P4 P3 P12 PROGRAM REPEAT REMOTE SENSOR CD PORTABLE SYSTEM RC EZ31 RE MO TE CO NT RO L UN IT RM SR CE Z31 A SK ...

Страница 20: ...JVC Asia Pte Ltd 101 Thomson Road 28 04 United Squares Singapore 307591 No 28225 Printed in Singapore 200601 L ...

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