JVC RC-BX33SL Service Manual
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JVC RC-BX33SL Service Manual

Portable cd system
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SERVICE MANUAL
PORTABLE CD SYSTEM
PLEASE TAKE NOTE BEFORE ORDERING
1.
Order all service parts through JVC Asia Pte Ltd.- Customer Satisfaction Dept.
2.
Two orders are available: Initial order and last order (Before End Of Line)
3.
Minimum order quantity: 100pcs
4.
Delivery term: Minimum 2 months upon confirmation of order.
Safety precautions ............................................................ 1-2
Preventing static electricity ...............................................1-3
Disassembly method .........................................................1-4
Adjustment method............................................................ 1-7
Description of major IC ..................................................1-13
COPYRIGHT
RC-BX33SL
IMPORTANT
Contents
    
2001 JVC ASIA PTE LTD
RC-BX33SL
No: 28208
DEC. 2001

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Summary of Contents for JVC RC-BX33SL

  • Page 1 RC-BX33SL IMPORTANT PLEASE TAKE NOTE BEFORE ORDERING Order all service parts through JVC Asia Pte Ltd.- Customer Satisfaction Dept. Two orders are available: Initial order and last order (Before End Of Line) Minimum order quantity: 100pcs Delivery term: Minimum 2 months upon confirmation of order.

  • Page 2: Safety Precautions

    RC-BX33SL Safety precautions XL-SV320SL/SV305GD XL-SV308BU 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 to the original design unless authorised in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits.
  • Page 3 RC-BX33SL Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is dis- charged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

  • Page 4: Disassembly Method

    RC-BX33SL Disassembly method Removing the rear panel 1. From behind the body, remove the Five screws A retaining the rear panel. 2. Open the Battery door, then remove One Screw B retaining in the battery compartment bottom side. 3 Then remove the Two screws C retaining the bottom of rear panel.
  • Page 5 RC-BX33SL Removing the Main Board PCB (1) 1. Open & remove the rear panel 2. Remove the Two Screws D on the Black Backet, then take out the black backet on the front panel. Screws D. 3 Remove the Two Screws E retaining on the left of front panel.
  • Page 6 RC-BX33SL Removing the Main Board PCB (2) 5 Disconnect the CN201, CN202 & C301 on the top of the Main Board PCB. Front Panel CN 201 CN 202 Main PCB CN 301 Top Panel 6 Then, take out the top panel from the front panel.

  • Page 7: Adjustment Method

    RC-BX33SL Adjustment method Measurement instruments required for Tuner section adjustment 1 Low frequency oscillator Reference measurement ----- 26.1mV(0.63/8 ) This oscillator should have a capacity to output output 0dB to 600 at an oscillation frequency of Input positions ----- AM : Standard loop antenna...
  • Page 8 RC-BX33SL TAPE DECK ADJUSTMENTS 1 HEAD AZIMUTH ADJUSTMET ( 1 ) Load the test tape TCC-182A 8KHz for azimuth adjustment. ( 2 ) Press the PLAY button. Use a cross-tip screwdriver to turn the screw for azimuth ( 3 ) adjustment so that the left and right output are maximized ( 4 ) Press the STOP button ( 5 ) After completion of the adjustment.
  • Page 9 RC-BX33SL Tape recorder section Items Measurement method Measurement Standard Adjusting conditions Values positions Confirmation Test tape 1 Playback the test tape TCC-182A (8KHz) Maximum Adjust the head of head angle :TCC-182A(8KHz) 2 With the recording & playback mechanism, output azimuth screw...
  • Page 10 RC-BX33SL Electrical Performance ITEMS Measurement method Measurement Standard Adjusting conditions Values positions Adjustment of * Mode: PB mode 1 With the recording and playback mechanism, recording bias * Recording mode load the test tapes TDK-D60, and set the TDK-D60 current...
  • Page 11 RC-BX33SL Flow of functional operation until TOC read Check Point Slider turns Check that the voltage at the pin Power Key REST SW ON. 17 of CN901 is OV (a moment)? Automatic tuning of TE offset Laser ON Check that the voltage at the...

  • Page 12: Tuner Adjustments

    RC-BX33SL TUNER ADJUSTMENTS use a plastic screw driver for adjustments. Adjust the intermediate frequency of AM and FM to the frequency of ceramic filter Supply voltage : DC 12.0 V Speaker impedance : 8 OHMS Function switch : RADIO a. AM Adjustment...
  • Page 13 RC-BX33SL Major ICs Description LA1824 GND2 V CC 2 PHASE DECODER COMP TRIG ST SW PILOT S-METER V CC 1 AM-IF GND1 Pin No. Pin No. Pin No. Pin No. Function Function Function Function Pin No. Pin No. Function Function...
  • Page 14 RC-BX33SL TA2092N PW GND PW GND OUT(+)2 OUT(+)2 VIN3 VIN3 OUT(-)1 OUT(-)1 PVCC2 PVCC2 SGND SGND PVCC1 PVCC1 OUT(-)2 OUT(-)2 SVCC1 SVCC1 OUT(+)1 OUT(+)1 PW GND PW GND VIN4 VIN4 VIN1 VIN1 PW GND PW GND OUT(+)4 OUT(+)4 OUT(-)3 OUT(-)3...
  • Page 15 RC-BX33SL TA2153FN 36pF 10pF 10pF 3 STATE 21.82K 2.9K 1.4K 238K 2.26K 15pF 238K BOTTOM 15pF PEAK 150K 40pF 150K AGC Amp. 40pF Function Function Pin No. Pin No. Pin No. Pin No. Function Function Pin No. Pin No. Function...
  • Page 16 RC-BX33SL JVC Asia Pte Ltd 101 Thomson Road, #28-04 United Squares, Singapore 307591 (No: 28208) Printed in Singapore 200104(L)
  • Page 17 RC-BX33SL IMPORTANT PLEASE TAKE NOTE BEFORE ORDERING Order all service parts through JVC Asia Pte Ltd.- Customer Satisfaction Dept. Two orders are available: Initial order and last order (Before End Of Line) Minimum order quantity: 100pcs Delivery term: Minimum 2 months upon confirmation of order.

  • Page 18: Block Diagram

    RC-BX33SL BLOCK DIAGRAM DISC FM ANT FM RF FM OSC IC902 IC902 TA9457F FM F/E, IF/DET/MPX TA2153FN OPTICAL PICKUP (DSP/MCU) HEAD AMP AM RF/IF/DET (IC101 LA1824) TU-5V IC903 REG. AM ANT CD DOOR TA2092N LEAF - SW MOTER DRIVER AM OSC L R/P L.
  • Page 19 RCRC-BX33SL Wiring Diagram...
  • Page 20 Circuit Diagram -1 RC-BX33SL...
  • Page 21 RC-BX33SL Circuit Diagram -2...
  • Page 22 RC-BX33SL Printed Circuit Boards...
  • Page 23 RC-BX33SL JVC Asia Pte Ltd 101 Thomson Road, #28-04 United Squares, Singapore 307591 (No: 28208) Printed in Singapore 200104(L)

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