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JVC UX-J60 Service Manual
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JVC UX-J60 Service Manual

JVC UX-J60 Service Manual

Micro component system
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SERVICE MANUAL
MICRO COMPONENT SYSTEM
03
2003
22029
RM -SUXJ60R REMOTE CONTROL
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
UX-J60
SP-UXJ60
CA-UXJ60
TABLE OF CONTENTS
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
SP-UXJ60
Area Suffix
B -------------------------- U.K.
E ------- Continental Europe
EN --------- Northern Europe
UX-J60
No.22029
2003/03

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Summary of Contents for JVC UX-J60

  • Page 1 UX-J60 SERVICE MANUAL MICRO COMPONENT SYSTEM 22029 2003 UX-J60 RM -SUXJ60R REMOTE CONTROL SP-UXJ60 CA-UXJ60 SP-UXJ60 Area Suffix B -------------------------- U.K. E ------- Continental Europe EN --------- Northern Europe TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .

  • Page 2: Important Safety Precautions

    UX-J60 SECTION 1 Important Safety Precautions 1.1 Safety Precautions (1) This design of this product contains special hardware and exposed metal part and a known good earth ground. many circuits and components specially for safety purposes. Measure the AC voltage across the resistor with the AC For continued protection, no changes should be made to the voltmeter.
  • Page 3 UX-J60 1.5 Safety Precautions (U.K only) (1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con- tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace- ment parts must be identical to those used in the original circuits.
  • Page 4 UX-J60 1.6 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.
  • Page 5 UX-J60 1.9 Important for laser products (1) CLASS 1 LASER PRODUCT (5) CAUTION : If safety switches malfunction, the laser is able (2) DANGER : Invisible laser radiation when open and inter to function. lock failed or defeated. Avoid direct exposure to beam.

  • Page 6: Disassembly Method

    UX-J60 SECTION 2 Disassembly method 2.1 Main body 2.1.1 Removing the metal cover (See Fig.1~3) (1) Remove the six screws A on the back of the main body. (2) Remove the two screws B on each side and remove the metal cover in the direction of the arrow.
  • Page 7 UX-J60 2.1.2 Removing the rear cover (See Fig.4) (1) Remove the two screws C attaching the rear cover. Rear cover Fig.4 2.1.3 Removing the rear panel / fan assembly (See Fig.5, 6) • Prior to performing the following procedure, remove the metal cover and the rear cover.
  • Page 8 UX-J60 2.1.4 Removing the tuner board (See Fig.7) • Prior to performing the following procedure, remove the metal cover. (1) Disconnect the card wire from the connector CN1 on the tuner board. (2) Remove the two screws F on the rear side and the screw G in the side.
  • Page 9 UX-J60 2.1.6 Removing the main board / the heat sink board / the Main board speaker jack board CN914 CN915 (See Fig.9~12) • Prior to performing the following procedure, remove the metal CN911 cover, the rear cover, the rear panel, the tuner board and the...
  • Page 10 UX-J60 2.1.7 Removing the power transformer assembly (See Fig.13) • Prior to performing the following procedure, remove the metal cover, the rear cover, the rear panel, the CD-R/RW mecha- nism assembly and the main board. (1) Disconnect the power cord from the connector J1000 on the power transformer assembly.
  • Page 11 UX-J60 2.1.9 Removing the phones board (See Fig.16) • Prior to performing procedure, remove the metal cover and the front panel assembly. (1) Disconnect the flat wire from the connector CN913 on the main board. Mian board CN913 Phones board Fig.16...
  • Page 12 UX-J60 2.1.11 Removing the switch board LCD board assembly (See Fig.18,19) • Prior to performing the following procedure, remove the metal cover and the front panel assembly. (1) Remove the four screws M attaching the switch board. (2) Move the switch board in the direction of the arrow to dis- connect the wire from the connector CN762 and the card wire from the connector CN761.
  • Page 13 UX-J60 2.1.13 Removing the control panel assembly (See Fig.20,21) • Prior to performing the following procedure, remove the metal cover, the front assembly, the switch board and the LCD board assembly. (1) Remove the three screws O attaching the control panel as- sembly.
  • Page 14 UX-J60 2.1.14 Remiving the control board Control panel assembly (See Fig.22,23) • Prior to performing the following procedure, remove the metal cover, the front panel assembly, the switch board, the LCD board assembly and the control panel assembly. (1) Pull out the volume knob.
  • Page 15 UX-J60 2.2 Cassette mechanism assembly 2.2.1 Removing the Play/Record & Clear head Cassette mechanism assembly Fly wheelR (See Fig.1~3) (1) While moving the trigger arm on the right side of the head mount in the direction of the arrow, turn the flywheel R counterclockwise until the head mount comes ahead and clicks.
  • Page 16 UX-J60 2.2.2 Removing the head amplifier & mechanism control board (See Fig.4) (1) Turn over the cassette mechanism assembly and remove Main motor assembly the three screws A attaching the head amplifier & mecha- nism control board. Capstan belt (2) Disconnect the flexible wire from connector CN31 on the head amplifier &...
  • Page 17 UX-J60 2.2.4 Removing the flywheel (See Fig.8, 9) • Prior to performing the following procedure, remove the head amplifier & mechanism control board and the main motor as- sembly. (1) From the front side of the cassette mechanism, remove the slit washers attaching the capstan shaft L and R.
  • Page 18 UX-J60 2.2.6 Reattaching the Play/ Record & Clear head (See Fig.11~13) (1) Reattaching the head mount assembly. a) Change front of the direction cover of the head mount assembly to the left (Turn the head forward). b) Fit the bosses O', P', Q', U' and V' on the head mount assembly to the holes P and V, the slots O, U and Q of the mechanism sub assembly (See Fig.11 to 13).
  • Page 19 UX-J60 SECTION 3 Adjustment 3.1 Adjustment method Tuner section Measurement Instruments Required for Adjustment FM tuning range: 87.5MHz~108.00MHz AM tuning range: 522kHz~1,629kHz 1. Low frequency oscillator This oscillator should have a capacity to output Voltage applied to tuner +B : DC5.7V...
  • Page 20 UX-J60 3.2 Cassette mechanism adjustment Head azinuth Head azinuth adjustment screw adjustment screw (Forward side) (Reverse side) CN31 Head azinuth Head azinuth R/P head, Erase head adjustment screw adjustment screw (Forward side) (Reverse side) Mecha control board VR37 R371 FW100...
  • Page 21 UX-J60 3.2.1 Mechanism section Adjustment Item Condition Measurement method Ref.value position Only adjust Head Test tape 1.Playback the test tape VT703L (8kHz). Maximum at changed azimuth : VT703L (8kHz) 2.Adjust to maximum output level by azimuth output head Output terminal...
  • Page 22 UX-J60 3.2.2 Electrical adjustment Adjustment Item Condition Measurement method Ref.value position VR31 AC-225 Recording Forward or Reverse 1.Set the test tape(AC-514 TYPE :4.20 A BIAS Test tape AC-225 TYPE ), then make REC/PAUSE AC-514 adjustment :AC-514 TYPE condition. :4.0 A :AC-225 TYPE 2.Connect 100...
  • Page 23 UX-J60 3.3 Flow of functional operation until TOC read (CD) Check Point Slider turns REST Power Key Power ON Check that the voltage at the pin 5 SW ON. of CN801 is 0V? Automatic tuning of TE offset Check that the voltage at the Laser ON pin2 of IC601 is 4.4V?
  • Page 24 UX-J60 3.4 Maintenance of laser pickup (CD) 3.5 Replacement of laser pickup (CD) (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens Turn off the power switch and, disconnect the with a alcohol soaked cotton swab.

  • Page 25: Description Of Major Ics

    UX-J60 SECTION 4 Description of major ICs 4.1 AN22000A-W (IC601) : RF & SERVO AMP • Terminal layout • Pin function Symbol I/O Function I APC Amp. input terminal O APC Amp. output terminal - Power supply terminal I RF adder Amp. inverting input terminal RFOUT O RF adder Amp.
  • Page 26 UX-J60 4.2 HA12238F (IC32) : R/P Equalizer • Pin layout TEST PB-NF1(L) (Open for nomal use) TEST 2 Iraf MUTE PBIN(l) ALC DET Return SW REC Return REC MUTE OFF/ON Return SW PBIN(R) MUTO ON/OFF REC RETURN ON/OFF MUTE TEST 3...
  • Page 27 UX-J60 • Pin function Pin No. Symbol Function PB-NF2(R) PB EQ feed back PB-EQ(R) NAB output EQOUT(R) EQ output TAI(R) Tape input PBOUT(R) PB output NC pin REC IN(R) REC-EQ input ALC(R) ALC(R) signal out put NC pin REC OUT(R)
  • Page 28 UX-J60 4.3 GP1UM261XK (IC750) : Receiver • Pin layout Vout • Block diagram Limiter B.P.F. Integrator Demodulator Comparator GND Vdd Vout 4.4 HA17758A (IC902,IC944) : Dual Operational Amp • Pin layout Vout1 Vin(-)1 Vout2 Vin(+)1 Vin(-)2 Vin(+)2 1-28 (No.22029)
  • Page 29 UX-J60 4.5 KIA7810API (IC942) : Regulater • Pin Layout • Block Diagram INPUT Q11-1 OUTPUT COMMON(GND) (No.22029)1-29...
  • Page 30 UX-J60 4.6 KIA78R08PI (IC943) :Regulater • Pin Layout • Block Diagram BANDGAP REFERENCE PROTECTION OUTPUT ON/OFF CONTROL Control OVER HEAT PROTECTION 1-30 (No.22029)
  • Page 31 UX-J60 4.7 KIA78S06P-T (IC932) : Regulator • Pin layout 1 2 3 • Block diagram 3 INPUT 1 OUTPUT 2 COMMON 4.8 LB1641 (IC802) : DC Motor driver • Pin layout • Truth table Input Output Mode OUT1 OUT1 OUT2...
  • Page 32 UX-J60 4.9 LA1838 (IC1): FM AM IF AMP&detector, FM MPX Decoder • Block Diagram DECODER RF.AMP ANIT-BIRDIE MUTE BUFF STEREO P-DET AM IF PILOT 384KHz COMP S-METER AM/FM S-CLRVE S-METER IF-BUFF TUNING STEREO DRIVE DRIVE FM IF • Pin Function Pin No.
  • Page 33 UX-J60 4.10 LA6541-X (IC801) : Servo driver • Pin layout & Block diagram Vref Vin4 Vin3 Level B T L B T L Level RESET shift driver driver shift Level B T L B T L Level Regulator shift driver...
  • Page 34 UX-J60 4.11 LC72136N (IC2) : PLL frequency synthesizer • Pin layout FM/AM LPFOUT LPFIN CLOCK FM/ST/VCO FMIN AM/FM AMIN IFCONT SDIN IFIN • Block diagram Phase Reference Detector Driver Charge Pump Swallow Counter Swallow Counter 1/16,1/17 4bit 1/16,1/17 4bit Unlock...
  • Page 35 UX-J60 4.12 LC72723(IC3): RDS demodulation • Pin layout VREF RDS-ID/READY MPXIN RDCL Vdda RDDA Vssa FLOUT MODE Vddd Vssd XOUT • Block Diagram FLOUT VREF Vdda CLOCK Vddd RECOVERY (1187.5Hz) REFERENCE (57kHz) VOLTAGE Vssa Vssd VREF 57kHz MPXIN (SCF) ANTI ALIASING...
  • Page 36 UX-J60 4.13 LC75345M-X (IC901) : E.volume • Pin layout 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 • Block diagram LINP LINM LVref LOPOUT CONTROL CIRCUIT LOGIC Vref INTERFACE CIRCUIT...
  • Page 37 UX-J60 • Pin function Pin No. Symbol Function Serial data and clock input pin for control. Chip enable pin. Ground pin. LOPOUT Output pin of general-purpose operation amplifier. LINM Non-inverted input pin of general-purpuse operation amplifier. LINP Non-inverted input pin of general-purpuse operation amplifier.
  • Page 38 UX-J60 4.14 MN101C57DFB (IC931) : System micon • Pin Layout • Pin function Pin No. Symbol Function VLC1~VLC3 LCD BIAS VOLTAGE CD command ready signal MDATA CD data MCLK CD data clock _XRST CD reset STAT CD status input port...
  • Page 39 UX-J60 Pin No. Symbol Function DOOR_RST REST/CLOSE switch detect port SAFETY0 Irregular voltage detection 0 TAPE1 Tape Switch 0 TAPE0 Tape Switch 1 SAFETY1 Irregular voltage detection 1 STTA Tape IC Strobe BCTL Switched 5V control('H'=5Víoff) CDSAFETY CD safety voltage detect port...
  • Page 40 UX-J60 4.15 MN662748RPMFA (IC651) : Digital servo & Digital signal processer • Pin layout 20 ~ 41 ~ • Block diagram AVSS1 LRCKIN(MSEL) 8TIMES AVDD1 BCLK(SSEL) DIGITAL OVER SAMPUNC OUTR SRDATAIN DEEMPHSIS DIGITAL FILTER 1BIT (PSEL) LOGIC IOSEL CLVS BLKCK...
  • Page 41 UX-J60 • Pin function Symbol Function Symbol Function LDON Laser ON signal output (H:on) BCLK Not used Tracking error shunt signal output LRCK Not used (H:shunt) SRDATA Not used PLAY Not used DVDD1 Power supply (Digital) WVEL Not used DVSS1...
  • Page 42 UX-J60 4.16 STK432-070 (IC940) : 2ch AF power amp • Pin Layout • Block Diagram TR16 R14 TR15 TR14 TR11 TR12 TR13 TR10 1-42 (No.22029)
  • Page 43 UX-J60 (No.22029)1-43...
  • Page 44 UX-J60 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.22029) Printed in Japan 200303WPC...