JVC UX-H300 Service Manual
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JVC UX-H300 Service Manual

JVC UX-H300 Service Manual

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SERVICE MANUAL
MICRO COMPONENT SYSTEM
7
2004
MB297
UX-H300,UX-H330,UX-H350
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
5
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

TABLE OF CONTENTS

COPYRIGHT © 2004 Victor Company of Japan, Limited
UX-H300
Area suffix
US ------------------------ Singapore
UT ---------------------------- Taiwan
UW ----------- Brazil,Mexico,Peru
UX-H330
Area suffix
UT ---------------------------- Taiwan
UW ----------- Brazil,Mexico,Peru
UX-H350
Area suffix
UJ ---------------------- U.S.Military
No.MB297
2004/7

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Summary of Contents for JVC UX-H300

  • Page 1: Table Of Contents

    SERVICE MANUAL MICRO COMPONENT SYSTEM MB297 2004 UX-H300,UX-H330,UX-H350 UX-H300 Area suffix US ------------------------ Singapore UT ---------------------------- Taiwan UW ----------- Brazil,Mexico,Peru UX-H330 Area suffix UT ---------------------------- Taiwan UW ----------- Brazil,Mexico,Peru UX-H350 Area suffix UJ ---------------------- U.S.Military TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION 15 W per channel, min. RMS, driven into 4 Ω at 1 kHz with no more Amplifier Section Output Power than 10% total harmonic distortion. (IEC268-3) Audio input sensitivity/Impedance (at 1 kHz) AUX:500 mV/50 kΩ 4 Ω - 16 Ω Speakers/Impedance Tuner FM tuning range...

  • Page 3: Precaution

    SECTION 1 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...
  • Page 4 Preventing static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs. 1.5.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.

  • Page 5: Important For Laser Products

    Important for laser products 5.CAUTION : If safety switches malfunction, the laser is able 1.CLASS 1 LASER PRODUCT to function. 2.DANGER : Invisible laser radiation when open and inter 6.CAUTION : Use of controls, adjustments or performance of lock failed or defeated. Avoid direct exposure to beam. procedures other than those specified here in may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.

  • Page 6: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS. 1-6 (No.MB297)

  • Page 7: Disassembly

    SECTION 3 DISASSEMBLY Main body 3.1.1 Removing the front panel assembly (See Fig.1 to 6) (1) From the back of the body, remove the two screws A, and the two screws B attaching the front panel assembly. CD mechanism assembly (2) Remove the six screws D on both sides of the body.
  • Page 8 Front panel assembly CD mechanism assembly Front panel assembly FM-ANT Rear panel assembly Fig.4 CD mechanism assembly Joint a Main board CN402 CN801 Rear cover assembly Fig.6 Front panel assembly Rear cover assembly Fig.5 1-8 (No.MB297)
  • Page 9 3.1.2 Removing the main board (See Fig.7, 8) • Prior to performing the following procedure, remove the front panel assembly. Front panel assembly CD mechanism assembly (1) Disconnect the wire from all connectors on the main board. (2) Disconnect the wire from the two connectors on the cas- CN103 sette mechanism assembly.
  • Page 10 3.1.3 Removing the CD mechanism assembly (See Fig.9, 10) • Prior to performing the following procedure, remove the front panel assembly and the main board. CD door switch (1) Release the four bands setting the wire. Front panel assembly CD mechanism assembly (2) Disconnect the wire from the connector on the CD door switch and from CN601, CN603...
  • Page 11 3.1.4 Removing the CD mechanism assembly (See Fig.11 to 13) • Prior to performing the following procedure, remove the front panel assembly, the main board and the CD mechanism as- CD mechanism board sembly. CN606 Caution: Before disconnecting the card wire from connector CN607 CN607 the CD mechanism board and from CD pickup board, solder...
  • Page 12 3.1.5 Removing the CD mechanism (See Fig.14) • Prior to performing the following procedure, remove the front CD mechanism panel assembly, the main board, the CD mechanism assembly and the CD mechanism board. (1) Remove the four screws J attaching the CD mechanism. CD mechanism assembly Fig.14 3.1.6 Removing the headphone board/ AUX board...
  • Page 13 3.1.7 Remove the LCD board (See Fig.16, 17) • Prior to performing the following procedure, remove the front panel assembly, the main board and the CD mechanism as- Front panel assembly sembly. (1) From the front panel, pull out the volume knob and remove the nut and the washer.
  • Page 14 3.1.8 Removing the cassette mechanism assembly (See Fig.18, 19) • Prior to performing the following procedure, remove the front panel assembly and the main board. PUSH OPEN (1) Push ‘PUSH OPEN’ on the front panel to open the cassette door. (2) Remove the screw P attaching the bracket of the cassette mechanism assembly.
  • Page 15 3.1.9 Removing the heat sink/power board (See Fig.20 to 27) • Prior to performing the following procedure, remove the front panel assembly. Power unit section (1) From the bottom of the rear cover, peel off the tape attach- ing the wire extending from the power board and remove the earth plate which is attached with the double-sided tape.
  • Page 16 Holder Heat sink Heat sink Power board Fig.25 Band Power board Fig.23 Heat sink Heat sink Power board Power board Unsolder Band Fig.26 Band Bracket Joint f Holder Power board Power board Unsolder Band Unsolder Fig.24 Fig.27 1-16 (No.MB297)
  • Page 17 3.1.10 Removing the power transformer assembly/voltage selector (See Fig.28, 29) • Prior to performing the following procedure, remove the front panel assembly and the power unit section. Power trnsfomer assembly (1) Remove the four screws E’ attaching the power transform- er assembly.

  • Page 18: Adjustment

    SECTION 4 ADJUSTMENT Measurement Instruments Required for Adjustment (1) Low frequency oscillator This oscillator should have a capacity to output 0dBs to 600Ω at an oscillation frequency of 50Hz-20kHz. (2) Attenuator impedance : 600Ω (3) Electronic voltmeter (4) Distortion meter (5) Frequency counter (6) Wow &...
  • Page 19 Cassette amplifier section Item Measuring condition Check and adjustment procedure Standard value Adjusting part Head azimuth Test tape:VT703L 1.Play back the test tape VT703L. Output level: Head azimuth adjustment Signal output Within +/-2 dB of adjusting 2.Adjust the head azimuth adjusting screw so that terminal:PHONES maximum output screw (to be...

  • Page 20: Troubleshooting

    SECTION 5 TROUBLESHOOTING Circuit Symptom Cause and Remedy General No sound Defective earphone jack: Replace the earphone jack. Defect in IC801 Check voltages. Replace if necessary. Defect in IC301 Check voltages. Replace if necessary. No sound,weak sound Defect in IF T103: (Low sensitivity) Check resistance, voltage, and current.
  • Page 21 (No.MB297)1-21...
  • Page 22 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.MB297) Printed in Japan...
  • Page 23 SCHEMATIC DIAGRAMS MICRO COMPONENT SYSTEM UX-H300,UX-H330,UX-H350 CD-ROM No.SML200407 UX-H300 Area suffix US ------------------------ Singapore UT ---------------------------- Taiwan UW ----------- Brazil,Mexico,Peru UX-H330 Area suffix UT ---------------------------- Taiwan UW ----------- Brazil,Mexico,Peru UX-H350 Area suffix UJ ---------------------- U.S.Military Contents Wiring diagram Block diagram...
  • Page 24 In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.

  • Page 25: Wiring Diagram

    Wiring diagram Color codes are shown below 1 --- Brown 6 --- Blue 2 --- Red 7 --- Violet CN601 CN604 3 --- Orange 8 --- Gray 20-41092-56 4 --- Yellow 9 --- White CNM705 25-23050-82 11-80300-02 11-80300-06 5 ---Green 0 --- Black H300 CD PCB H300 LED PCB...

  • Page 26: Block Diagram

    Block diagram Tape Tuner Back Section Logic Deck TA2149 TC9257 Display Light AN7312 Source EAR Phone Selector Phone TC9422 TDA2822M AUX IN Drom Power AMP Speaker Tuner Tape 29F040-PC LA4628 Key Board Remote Remote 4K76 Control sensor CD/MP3 Main MP3 DAC Power Select Voltage...

  • Page 27: Standard Schematic Diagrams

    Standard schematic diagrams Primary section...
  • Page 28 Main section Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 29 CD section Parts are safety assurance parts. When replacing those parts make sure to use the specified one.
  • Page 30 Front section...

  • Page 31: Printed Circuit Boards

    Printed circuit boards Main board (forward side) Main board (reverse side)
  • Page 32 CD board (forward side) Power supply board CD board (reverse side)
  • Page 33 Front board forward side reverse side...
  • Page 34 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.MB297SCH)

  • Page 35: Ux-H300

    PARTS LIST [ UX-H300 ] [ UX-H330 ] [ UX-H350 ] * All printed circuit boards and its assemblies are not available as service parts. UX-H300 Area suffix US ---------------------- Singapore UT --------------------------- Taiwan UW ---------- Brazil,Mexico,Peru UX-H330 Area suffix...

  • Page 36: Exploded View Of General Assembly And Parts List

    Exploded view of general assembly and parts list Block No. FM ANT a r d F901 Display board F902 Power board Phone board LED board...
  • Page 37 Block No. FM ANT board a r d F901 Display board F902 Power board board LED board CD board AUX board...
  • Page 38 General Assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local  OW66-00300-21 CD DOOR OW39-04200-80 METAL COVER OW97-09019-80 P.C.MAGNET OW49-00300-12 STABILIZER RING OW55-09019-80 FELT OW55-00141-80 NSX01-050 OW36-00003-80 EJECT SPRING OW16-10101-81 CD DOOR SWITCH DLS-02-1 OW36-00300-10 CD DOOR SPRING OW48-00300-16 CD TRAY OW63-00303-81...
  • Page 39  Symbol No. Part No. Part Name Description Local OW40-92608-11 SCREW M2.6 X 8(x12) OW40-84012-01 SCREW M4 X 12(x4) OW40-93014-01 SCREW M3.0 X 14(x2) OW40-83005-01 SCREW M3 X 5 OW40-92606-01 SCREW M2.6 X 6 OW81-00300-02 LCD SPONGE BLK. OW68-00300-13 COPPER FOIL OW35-40007-80 STEEL NUT OW35-20001-80...

  • Page 40: Electrical Parts List

    Electrical parts list Main board  Symbol No. Part No. Part Name Description Local Block No. [0][1] OW02-30005-80 D706 KL-3M4 BLUE  Symbol No. Part No. Part Name Description Local C101 OW05-70103-10 C CAPACITOR 0.01mF C102 OW05-70102-10 C CAPACITOR 0.001mF IC101 TA2149BFN OW03-02149-01...
  • Page 41  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local C214 OW05-73820-05 C CAPACITOR 82pF C406 OW06-75225-20 E CAPACITOR 2.2mF 50V C215 OW05-73182-00 C CAPACITOR 1800pF C407 OW05-73101-05 C CAPACITOR 100pF C216 OW05-73182-00 C CAPACITOR 1800pF...
  • Page 42  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R152 OW07-75102-06 C RESISTOR 1K 1/16W R306 OW07-75222-06 C RESISTOR 2.2K 1/16W R153 OW07-75102-06 C RESISTOR 1K 1/16W R307 OW07-75273-06 C RESISTOR 27K 1/16W R154 OW07-75103-06...

  • Page 43: Power Board

    Power board  Symbol No. Part No. Part Name Description Local Block No. [0][2] L301 OW08-04344-81 FERRITE COIL L302 OW08-04344-81 FERRITE COIL  Symbol No. Part No. Part Name Description Local L303 OW08-04344-81 FERRITE COIL L304 OW09-70222-83T COIL 220mH L401 OW08-04344-81 FERRITE COIL ...

  • Page 44: Display Board

    Display board  Symbol No. Part No. Part Name Description Local Block No. [0][3] R744 OW07-75103-06 C RESISTOR 10K 1/16W  Symbol No. Part No. Part Name Description Local R745 OW07-75103-06 C RESISTOR 10K 1/16W R746 OW07-75103-06 C RESISTOR 10K 1/16W R747 OW07-75103-06 C RESISTOR...
  • Page 45  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local XXXXX OW84-00003-80 CABLE TIE 4 UL C638 OW05-73104-00 C CAPACITOR 0.1mF XXXXX OW84-00005-80 CABLE TIE 6.5 UL C639 OW05-73222-00 C CAPACITOR 2200pF Z702 8.2V0.5W Z DIODE...
  • Page 46  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R608 OW07-75472-06 C RESISTOR 4.7K 1/16W L602 OW08-01122-00 FERRITE BEADS RH03509ST-B246 R609 OW07-75472-06 C RESISTOR 4.7K 1/16W L604 OW08-01122-00 FERRITE BEADS RH03509ST-B246 R610 OW07-75472-06 C RESISTOR...
  • Page 47 <MEMO> 3-13...

  • Page 48: Packing Materials And Accessories Parts List

    Packing materials and accessories parts list Block No. 3-14...
  • Page 49 Packing and Accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  OW00-00300-12 SPEAKER BOX 15W 4OHM(x2) H300 OW00-00300-11 SPEAKER BOX 15W 4OHM(x2) H330 OW00-00350-32 SPEAKER BOX 15W 4OHM(x2) H350 OW88-00300-47 INST BOOK LVT1193-007A ENG CHI(PEKIN) OW88-00300-50 INST BOOK LVT1193-010A CHI(TAIWAN) OW88-00300-48...

This manual is also suitable for:

Ux-h330Ux-h350

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