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JVC UX-M3R Service Manual
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JVC UX-M3R Service Manual

JVC UX-M3R Service Manual

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SERVICE MANUAL

MICRO COMPONENT SYSTEM

STANDBY/ON
TUNER
CD/RANDOM
/BAND
TAPE
REC
PROGRAM
REMAIN
/RDS MODE
SLEEP
PRE UP
INTRO
REPEAT
/RDS SEARCH
TIMER
/PRE DOWN
DISPLAY
PRE EQ
MODE
/HBS
+
VOLUME
MUTING
BEAT CUT
Ð
RM-SUXM3R REMOTE CONTROL
SP-UXM3
Contents
Safety precautions
Preventing static electricity
Important for laser products
Disassembly method
Adjustment method
Flow of functional operation
until TOC read
UX-M3R
M I C R O
C O M P O N E N T
S Y S T E M
STANDBY
/ON
DISPLAY
MODE
TIMER
ON/OFF
SET
RANDOM
BAND
CD
TUNER
TAPE
PROGRAM
PRESET
SEARCH/TUNING
REPEAT
PHONES
PRE EQ
REC
STOP/CLEAR
PLAY/PAUSE
F U L L L O G I C D E C K
CD SYNCHRO RECORDING
CA-UXM3R
1-2
1-3
1-4
1-5
1-14
1-17
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
B ------------------------------- U.K.
E ----------- Continental Europe
EN ------------ Northern Europe
EV -------------- Eastern Europe
U X - M 3 R
OPEN
/CLOSE
REMAIN
/RDS MODE
INTRO/RDS
SEARCH
VOLUME
/HBS
EJECT
SP-UXM3
Maintenance of laser pickup
Replacement of laser pickup
Trouble shooting
Description of major ICs
Wiring connections
UX-M3R
Area suffix
1-18
1-18
1-19
1-20
1-29
No.21059
Jan. 2002

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Summary of Contents for JVC UX-M3R

  • Page 1: Micro Component System

    UX-M3R SERVICE MANUAL MICRO COMPONENT SYSTEM UX-M3R Area suffix B ------------------------------- U.K. E ----------- Continental Europe EN ------------ Northern Europe EV -------------- Eastern Europe M I C R O C O M P O N E N T S Y S T E M...
  • Page 2 UX-M3R 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 authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

  • Page 3: Preventing Static Electricity

    UX-M3R Preventing static electricity 1. Grounding to prevent damage by 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.

  • Page 4: Important For Laser Products

    UX-M3R 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.

  • Page 5: Disassembly Method

    UX-M3R Disassembly method Fuse(F902) <Main body section> 2A 250V Power board Fuse(F903) Replacement of the fuses and power amplifier IC 1A 250V Replacing the fuses (See Fig. 1.) Remove the left side panel according to its disassembly method (see Figs. 5 and 6).
  • Page 6 UX-M3R Removing the right side panel (See Figs. 3 and 4.) (Long) From the right side of the main body, remove the Right side three screws B and three screws C retaining the panel right side panel. Slide the right side panel toward the rear (in the...

  • Page 7: Removing The Top Cover

    UX-M3R Removing the top cover (To be loosened) (See Figs. 7 and 8.) Top cover Remove the left and right side panels. From the back side of the main body, loosen the two screws D retaining the top cover. Rear panel Lift the rear part of the top cover to remove it.
  • Page 8 UX-M3R Removing the CD mechanism assembly (See Figs. 12 to 14.) CN701 CN601 CN603 CD & MCU board CN602 Remove the left and right side panels. Remove the top cover. Remove the front panel assembly. Disconnect the wires from the four connectors CN601, CN602, CN603 and CN701 on the CD &...

  • Page 9: Removing The Power Board

    UX-M3R Removing the power board Stud Main board Power transformer CN901 Stud (See Figs. 15 and 16.) Remove the left and right side panels. Disconnect the wire from the connector CN901 on the power board. Remove the two screws L retaining the chassis .
  • Page 10 UX-M3R <Front panel assembly section> Key board Front panel assembly Remove the left and right side panels. Remove the top cover. Remove the front panel assembly. Removing the key board (See Fig. 19.) Remove the ten screws P retaining the key board.

  • Page 11: Cd Mechanism Section

    UX-M3R <CD mechanism section> Remove the left and right side panels. CD & MCU board Stud Remove the top cover. CN702 Remove the front panel assembly. Remove the CD mechanism assembly. Removing the CD & MCU board (See Figs. 23 and 24.)
  • Page 12 UX-M3R Removing the tray motor CD mechanism assembly (See Figs. 26 to 29.) Clamper assembly Claw p Remove the CD & MCU board. On the top of the CD mechanism assembly, open up the claws p and q at the left and right of the...
  • Page 13 UX-M3R Clamper assembly Front panel assembly Replacing the CD pickup unit Claw p (See Figs. 30 to 33.) [Note] Use the following procedure to replace only the CD pickup unit. Remove the left and right side panels (see Figs. 3 to 6).

  • Page 14: Adjustment Method

    UX-M3R Adjustment method Measuring instructions required for Measuring instruments adjustment Radio section FM 1kHz, 22.5kHz deviation 1. AM signal generator FM STEREO : 1kHz, 67.5kHz deviation 2. FM signal generator pilot signal 7.5kHz 3. Inter mediate frequency sweep generator AM : 1kHz, 30% modulation 4.

  • Page 15: Tuner Section

    UX-M3R Cassette amplifier section Item Measuring condition Check and adjustment procedure Standard value Adjusting part Head azimuth Test tape: Play back the test tape VT703 (10kHz). Output level: Head azimuth adjustment VT703 (10kHz) Adjust the head azimuth adjusting screw so that the...
  • Page 16 UX-M3R Location of adjusting parts Cassette mechanism section Adjustment Head CASSETTE MOTOR Tape Speed Adj. Azimuth adjustment screw Fig.1 Head output signal Fig.2 Main board P101 (AM VT) CN101 L101 (AM ANT) (AM OSC) P102 (FM VT) TC101 FM ANT...

  • Page 17: Flow Of Functional Operation Until Toc Read

    UX-M3R Flow of functional operation until TOC read Confirm that the voltage at the pin5 of CN703 is Slider turns REST Power ON "H"/"L"/"H" SW ON. Check that the voltage at the pin10(LD) of Laser ON CN704 is +1.35V. Caution...

  • Page 18: Maintenance Of Laser Pickup

    UX-M3R Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to Turn off the power switch and,disconnect the clean the lens with a alcohol soaked cotton power cord from the AC OUTLET.

  • Page 19: Troubleshooting

    UX-M3R Trouble shooting Circuit Symptom Cause Remedy General No sound Speakers are not connected. Check the speaker connection. Wrong function is selected. Set switch to the proper position. Defective volume control Set the volume control to a proper sound level.

  • Page 20: Description Of Major Ics

    UX-M3R Description of major ICs TMP87EP26F (IC601) : MCU 1. Terminal layout (Top view) 2.Pin function Symbol Function Symbol Function GND (0V) B-PHOTO OUTPUT Reel pulse input of deck B. Have pulse input means XOUT Resonator connecting pins for high clock(4-8MHz).
  • Page 21 UX-M3R TC9462F (IC701) : Digital servo single chip processor 1. Terminal layout 80 ~ 51 1 ~ 30 2. Pin function Pin No. Symbol Function Pin No. Symbol Function TEST0 Te s t m o d e t e r m i n a l . N o r m a l l y, k e e p a t o p e n VDD2 D i g i t a l p o w e r s u p p l y v o l t a g e t e r m i n a l .
  • Page 22 UX-M3R Pin No. Symbol Function Pin No. Symbol Function RFGC R F a m p l i t u d e a d j u s t m e n t c o n t r o l s i g n a l o u t p u t TESIN Te s t i n p u t t e r m i n a l .
  • Page 23 UX-M3R AN7312 (IC202) : Dual recording/Playback pre-amplifier circuit with ALC 1. Terminal layout 2. Block diagram Amp. Ripple Filter Amp. 3. Pin function Symbol Pin No. Function ALC time constant ALC time constant by resistance and capacitor ALC input Ch.1 Right channel ALC input Output Ch.1...

  • Page 24: Block Diagram

    UX-M3R BA4558 (IC402) : Dual operational amplifier 1. Terminal layout & Block diagram 2. Pin function Symbol Function OUT1 A output -IN1 A - input +IN1 A + input B + input +IN2 B - input -IN2 B output OUT2...
  • Page 25 UX-M3R TA2109F (IC704) : RF Amplifier 1.Terminal Layout 2.Block Diagram SBAD 2VRO AGCI RFGC 3 STATE RFGO RFIS RFRP RFRP RFIS 2VRO PEAK BOTTOM SBAD RFGO RFGC AGCI 3.Pin Function Pin No. Symbol Function Power supply input terminal Main beam I-V amplifier input terminal...
  • Page 26 UX-M3R TA2104AN (IC101) : 1chip AM/FM, MPX tuner system 1. Terminal layout 2. Pin function No. Symbol Function Symbol I/O Function RFGND FMRF OUT FMRF IN RF VCC RFGND Ground terminal for RF LPF2 FM/AM switch AMRF IN FMRF IN...
  • Page 27 UX-M3R TC9422F (IC301) : System electronic volume 1.Terminal Layout 2.Block Diagram INPUT SELECTOR INPUT SELECTOR 100k 100k R-IN1 L-IN1 R-IN1 L-IN1 L-IN2 R-IN2 R-IN2 L-IN2 R-IN3 L-IN3 L-IN3 R-IN3 R-IN4 L-IN4 GAIN CONTROL GAIN CONTROL 0,6,12,18dB 0,6,12,18dB R SW-OUT L SW-OUT...
  • Page 28 UX-M3R TA2092N (IC703) : Power driver IC 1.Terminal Layout & Block Diagram 2.Pin Function Pin No. Symbol Function Power GND PW GND1 PW GND1 PW GND4 Inverted output for CH1 OUT(-)1 OUT(-)1 OUT(-)4 Supply terminal of output stage for CH1...

  • Page 29: Wiring Connections

    UX-M3R Wiring connections Motor board 1-29...
  • Page 30 UX-M3R VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,maebashi-city,371-8543,Japan No.21059 200201(SV)

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