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SERVICE MANUAL

RADIO CASSETTE RECORDER

RC-W305

No: 28223

SEP. 2005

COPYRIGHT

©

2005 JVC ASIA PTE LTD

Area Suffix

U ----- Asia
UX ----- Middle East

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 Method ...................................................................... 4
Adjustment Method ......................................................................... 5
Description Of Major IC ................................................................ 8
Voltage Charts .............................................................................. 12
Wiring Connection Diagram ........................................................ 13
Schematic Diagram ...................................................................... 14
Printed Circuit Board ................................................................... 15

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Содержание RC-W305

Страница 1: ...dle East 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 Method 4 Adjustment Method 5 Description Of Major IC 8 Voltage Charts 12 Wiring Connection Diagram 13 Schematic Diagram 14 Printed Circuit Board 15 ...

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: ... damage by static electricity Static electricity in the work area can destroy the optical pickup in devicessuch Be careful to use proper grounding in the area where repairs are being performed 1 1 1 Gound the workbench 1 Ground the workbench by laying conductive material such as a conductive sheet or an iron plate over it before placing the traverse unit optical pickup on it 1 1 2 Ground yourself ...

Страница 4: ...D XL SV308BU 4 RC W305 Disassembly Method Remove the back cabinet 1 Open the battery cover and remove 2 screws inside it Screw A Screw A 2 Remove 5 screws on back side Screw B Screw B Then the unit would be disassembled ...

Страница 5: ...l is used there is no need to 7 Blank tape adjust the FM tracking TYPE I TDK D60 6 The input and output earth systems are separated In case of simultaneously measuring the voltage in 8 Torque gauge For play and back tension both of the input and output systems with an FWD CT 120m and FF REW CT F electronic voltmeter for two channels therefore the earth should be connected particularly carefully Ge...

Страница 6: ... 75 ohms unbalance Adjusting Connections SG Position of VTVM Circuit lnput Output Frequency Tuning dial Oscilloscope 1 Tuning Connect AM SG to Connect VTVM to 5 8 MHz Low end T105 2 coverage FM ANT D105 speaker terminals 15 4 MHz High end TC103 3 Connect AM SG to Connect VTVM to 7 0 MHz 7 0 MHz T107 4 FM ANT D105 speaker terminals 12 0 MHz 16 0 MHz TC101 d SW Adjustmen t Band switch SW2 SW Dummy a...

Страница 7: ...tape VTT 703 etc 10 KHZ for azimuth adjustment 2 Press the PLAY button 3 Use a cross tip screwdriver to turn the screw for azimuth adjustment so that the left and right output are maximized 4 Press the STOP button 5 After completion of the adjustment use thread lock TB 1401B to secure the azimuth adjustment screw 3 MOTOR SPEED ADJUSTMENT 1 Insert the test tape MTT 111N etc 3 000 HZ 2 Press the PLA...

Страница 8: ...XL SV320SL SV305GD XL SV308BU 8 RC W305 LA1824 Block Diagram Description of Major IC ...

Страница 9: ...RC W305 9 BA3308 Block Diagram ...

Страница 10: ...XL SV320SL SV305GD XL SV308BU 10 RC W305 Block Diagram BA3416BL ...

Страница 11: ...RC W305 11 ...

Страница 12: ... 23 24 DC9V 4 63 4 63 0 00 0 00 IC No Item 1 2 3 4 5 6 7 8 9 10 11 12 DC9V 10 03 5 12 9 20 1 19 0 00 10 03 0 00 0 00 1 19 9 18 5 13 10 16 IC No Item 1 2 3 4 5 6 7 8 9 10 11 12 DC9V 9 30 4 77 8 47 1 20 0 00 9 32 0 00 0 00 1 20 8 49 4 70 9 32 IC No Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 DC9V 0 99 0 00 0 00 0 00 2 16 2 14 5 50 1 87 5 13 1 07 0 00 1 31 0 59 0 59 0 00 0 00 0 00 0 00 IC No It...

Страница 13: ...RC W305 13 Wiring Connections Diagram ...

Страница 14: ...XL SV320SL SV305GD XL SV308BU 14 RC W305 Schematic Diagram ...

Страница 15: ...RC W305 15 Printed Circuit Board ...

Страница 16: ...XL SV320SL SV305GD XL SV308BU 16 RC W305 ...

Страница 17: ...RC W305 17 ...

Страница 18: ...JVC Asia Pte Ltd 101 Thomson Road 28 04 United Squares Singapore 307591 No 28223 Printed in Singapore 200505 L ...

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