JVC HX-Z1 Service Manual
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JVC HX-Z1 Service Manual

JVC HX-Z1 Service Manual

Compact component system
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HX-Z1
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
21111
2002
08
HX-Z1
No.21111
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
2002/08

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  • Page 1 HX-Z1 SERVICE MANUAL COMPACT COMPONENT SYSTEM 21111 2002 HX-Z1 No.21111 COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD. 2002/08...

  • Page 2: Table Of Contents

    HX-Z1 TABLE OF CONTENTS Important Safety Precautions ............. 3 Safety Precautions .

  • Page 3: Important Safety Precautions

    HX-Z1 SECTION 1 Important Safety Precautions 1.1 Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purposes. Move the resistor connection to each exposed metal part, For continued protection, no changes should be made to the...

  • Page 4: Preventing Static Electricity

    HX-Z1 1.5 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: Important For Laser Products

    HX-Z1 1.8 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

    HX-Z1 SECTION 2 Disassembly method 2.1 Main board 2.1.1 Removing the metal cover (See Fig.1 ~ 3) • Remove the six screws A on the back of the body. • Remove the screw B on each side of the body.
  • Page 7 HX-Z1 2.1.3 Removing the front panel assembly (See Fig.6 ~ 9) • Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly. (1) Disconnect the card wire from connector CN44 and CN870 on the main board on the right side of the body.
  • Page 8 HX-Z1 2.1.4 Removing the antenna board (See Fig.10, 11) • Prior to performing the following procedure, remove the metal cover. REFERENCE: There is no need to remove the CD changer mechanism as- sembly. (1) Disconnect the card wire from connector CN1 on the an- tenna board on the right side of the body.
  • Page 9 HX-Z1 2.1.5 Removing the rear panel (See Fig.12 ~ 17) • Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly. (1) Remove holding board by remove two plastic rivets and then slide out the holding board as shown in fig. 12.
  • Page 10 HX-Z1 2.1.6 Removing the fan assembly (See Fig.18, 19) • Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly and the rear panel. (1) Remove two screws G on the rear panel. (2) Rotate fan assembly in clockwise direction to release fan assembly from rear panel (joint d).
  • Page 11 HX-Z1 2.1.8 Removing the bridge board / regulator board / heat sink (See Fig.21 ~ 27) • Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly, the rear panel, the antenna board and main board.
  • Page 12 HX-Z1 (6) Remove the two screws I attaching the heat sink bracket and move the heat sink in the direction of the arrow to re- lease from the base chassis (two joints i). The bridge board and the regulator board come off with the heat sink.

  • Page 13: Front Panel Assembly

    HX-Z1 2.1.9 Removing the power transformer assembly (See Fig.28, 29) • Prior to performing the following procedure, remove the metal cover, the CD changer mechanism assembly, the rear panel, the main board and the bridge board / regulator board. (1) Remove the screw N attaching the primary board.
  • Page 14 HX-Z1 2.2.3 Removing the display system control board (See Fig.31, 32) (1) Remove the four screws S attaching the stay bracket (1). (2) Disconnect the card wire from connector CN43 and CN880 on the display system control board. Remove the ten screws T attaching the display system control board.

  • Page 15: Mechanism

    HX-Z1 SECTION 3 MECHANISM 3.1 CDchanger Mechanism Type VC3 Section 3.1.1 Removing the CD Servo control board (See Fig.1) (1) Remove the metal cover. (2) Remove the CD changer mechanism assembly. (3) From bottom side the CD changer mechanism assem- bly,remove the four screws A retaining the CD servo con- trol board.
  • Page 16 HX-Z1 3.1.2 Removing the CD tray assembly (See Fig.2~9) (1) Remove the front panel assembly. (2) Remove the CD changer mechanism assembly. (3) Remove the CD Servo control board. (4) Remove the screw B' retaining the lod stopper. (5) From the T.bracket section "b" and clamper base section "c"...
  • Page 17 HX-Z1 Fig.8 Fig.5 Fig.9 Fig.6 Fig.7...
  • Page 18 HX-Z1 3.1.3 Removing the CD loading mechanism assembly (See Fig.10) (1) While turning the cams R1 and R2 assembly in the arrow direction h ,align the shaft i of the CD loading mechanism assembly to the position shown in Fig.10.
  • Page 19 HX-Z1 3.1.5 Removing the CD pick unit (See Fig.13 ) (1) Move the cam gear in the arrow direction m . Then, the CD pickup unit will be moved in the arrow direction n . (2) According to the above step, shift the CD pickup unit to the center position.
  • Page 20 HX-Z1 3.1.7 Removing the cam unit (See Fig.15 ~17 ) (1) Remove the CD loading mechanism assembly. (2) While turning the cam gear q , align the Paul r position of the drive unit to the notch position(Fig.16) on the cam gear (3) Pull out the drive unit and cylinder gear(See Fig.17).
  • Page 21 HX-Z1 3.1.8 Removing the actuator motor and belt (See Fig.18~21) (1) Remove the two screws I retaining the gear bracket (See Fig.18). (2) While pressing the pawl t fixing the gear bracket in the ar- row direction, remove the gear bracket (See Fig.18).
  • Page 22 HX-Z1 3.1.9 Removing the cams R1/R2 assemblyand cam gear q (See Fig.22) (1) Remove the slit washer fixing the cams R1 and R2 assem- bly. (2) By removing the two pawls w fixing the cam R1, separate R2 from R1.

  • Page 23: Cassette Mechanism Section

    HX-Z1 3.2 Cassette mechanism section 3.2.1 Removing the playback / recording & eraser head (See Fig. 1 ~ 3) (1) While shifting the trigger arms seen on the right side of the head mount in the arrow direction, turn the flywheel R in counterclockwise direction until the head mount has gone out with a click (See Fig.
  • Page 24 HX-Z1 3.2.3 Removing the head amplifier & mechanism control board (See Fig. 4) (1) Remove the cassette mechanism assembly. (2) After turning over th cassette mechanism assembly, re- move the three screws A retaining the head amplifier & mechanism control board.
  • Page 25 HX-Z1 3.2.5 Removing the flywheel (See Fig. 8, 9) (1) Remove the head amplifier & mechanism control P.C. board. (2) Remove the main motor assembly. (3) After turning over the cassette mechanism, remove the two slit washers and fixing the capstan shafts R and L, and pull out the flywheel (R) and (L) respectively from behind the cassette mechanism.
  • Page 26 HX-Z1...

  • Page 27: Adjustment Method

    HX-Z1 SECTION 4 Adjustment method 4.1 Measurement Instruments Required for Adjustment 4.4 Tuner section (1) Low frequency oscillator Aversion: FW 87.5MHz~108.0MHZ This oscillator should have a capacity to output 0dBs to AM 522KHz~1629KHz UW,UJ version: FM 87.5MHz~108.0MHz 600OHM at an oscillation frequency of 50Hz-20kHz.

  • Page 28: Arrangement Of Adjusting Position

    HX-Z1 4.6 Arrangement of Adjusting Position Cassette mechanism section Cassette mechanism section (Back side) Cassette AMP board...
  • Page 29 HX-Z1 4.6.1 Tape Recorder Section Items Measurement Measurement method Standard Adjusting conditions Values positions Confirmation Test tape (1) Playback the test tape VT703L (8kHz) Maximum Adjust the head of head angle : VT703L (8kHz) (2) With the recording & playback mechanism, ad-...
  • Page 30 HX-Z1 4.6.3 Electrical Performance Items Measurement conditions Measurement method Standard Adjusting Values positions Adjustment of • Mode: Forward or reverse (1) With the recording and playback mechanism, AC-225 VR31 recording mode load the test tapes (AC-514 to TYPE 2 and AC- : 4.20 µA...
  • Page 31 HX-Z1 4.6.5 Extension code connecting method...

  • Page 32: Flow Of Functional Operation Until Toc Read

    HX-Z1 4.7 Flow of functional operation until TOC read...

  • Page 33: Maintenance Of Laser Pickup

    HX-Z1 4.8 Maintenance of laser pickup 4.9 Replacement of laser pickup (1) Cleaning the pick up lens Before you replace the pick up, please try to clean the lens with a alcohol soaked cotton swab. (2) Life of the laser diode When the life of the laser diode has expired, the following symptoms will appear.

  • Page 34: Description Of Major Ics

    HX-Z1 SECTION 5 Description of major ICs 5.1 BU2092 (IC811) : Port expander • Pin Layout • Pin function Pin No. Symbol Function Connect to GND DATA Serial Data input CLOCK Shift Clock of Data Latch Clock of Data 5~16 Q0~Q11...

  • Page 35: Kia7805Api (Ic360) : Regulator

    HX-Z1 5.2 KIA7805API (IC360) : Regulator • Pin layout • Block diagram...

  • Page 36: Bh3874Aks2 (Ic434) : Audio Sound Processor

    HX-Z1 5.3 BH3874AKS2 (IC434) : Audio sound processor • Pin layout • Block diagram...
  • Page 37 HX-Z1 • Pin function Pin No. Name Function Pin No. Name Function F1R1 Rch GREQ f1 filter setting pin Serial data larch receiving pin F1R2 Rch GREQ f1 filter setting pin Serial clook receiving pin F2L1 Lch GREQ f2 filter setting pin...

  • Page 38: Kia7808Api (Ic303) : Regulator

    HX-Z1 5.4 KIA7808API (IC303) : Regulator • Pin layout • Block diagram...

  • Page 39: Kia7812Api (Ic240) : Regulator

    HX-Z1 5.5 KIA7812API (IC240) : Regulator • Pin layout • Block diagram...

  • Page 40: Njm4580D (Ic501, Ic502, Ic571) : Lpf, Mic And H.phone Amp

    HX-Z1 5.6 NJM4580D (IC501, IC502, IC571) : LPF, Mic and H.phone amp. • Pin layout • Block diagram...

  • Page 41: Gp1Um271Xk (Ic951) : Receiver For Remote

    HX-Z1 5.7 GP1UM271XK (IC951) : Receiver for remote 5.8 STK402-030 (IC602) : Power amp • Pin layout • Block diagram...

  • Page 42: Stk412-010 (Ic701) : Power Amp

    HX-Z1 5.9 STK412-010 (IC701) : Power amp • Pin layout • Block diagram...

  • Page 43: Upd784975Agf304 (Ic810) : Main Micon

    HX-Z1 5.10 UPD784975AGF304 (IC810) : Main micon • Pin layout • Pin function Pin No. Name I/O Function Pin No. Name I/O Function AVDD AD VDD, same as VDD1 SPI A I/O SPI A data SPIDTI SPI analog input SPI B...

  • Page 44: Kia7809Api (Ic305) : Regulator

    HX-Z1 5.11 KIA7809API (IC305) : Regulator • Pin layout • Block diagram...

  • Page 45: An22000A-W (Ic601) : Rf Head Amp

    HX-Z1 5.12 AN22000A-W (IC601) : RF head amp. • Pin layout • Block diagram • Pin function Pin No. Function Pin No. Function APC amp input terminal. VREF output terminal. APC amp output terminal. VDET output terminal. Power supply. VDET input terminal.

  • Page 46: An7317 (Ic32) : R / P Amp

    HX-Z1 5.13 AN7317 (IC32) : R / P amp. • Pin layout & block diagram • Pin functions Pin No. Function Channel 1 playback amplifier input Channel 1 playback amplifier negative feedback Channel 1 playback amplifier output Channel 1 record amplifier input...

  • Page 47: Ba15218F-Xe (Ic602,Ic652) : Dual Operation Amplifier

    HX-Z1 5.14 BA15218F-XE (IC602,IC652) : Dual operation amplifier • Pin layout • Block diagram 5.15 BA3126N (IC31) : R/P switc...

  • Page 48: Bu4094Bcf-X (Ic33) : Shift / Store Registor

    HX-Z1 5.16 BU4094BCF-X (IC33) : Shift / Store registor • Pin layout • Block diagram...

  • Page 49: Bu9253As (Ic901) : Lpf & Echo Mixer

    HX-Z1 5.17 BU9253AS (IC901) : LPF & Echo mixer • Pin layout & Block diagram • Pin function Pin No. Symbol Descriptions Connect GND ECHO VR Echo level control Non connect BIAS Analog part DC bias DAINT IN DA side integrator input...

  • Page 50: La1838 (Ic1): Fm Am If Amp & Detector, Fm Mpx Decoder

    HX-Z1 5.18LA1838 (IC1): FM AM IF amp & Detector, FM MPX decoder • Pin layout / Block Diagram • Pin Function PinNo. Symbol I/O Function PinNo. Symbol I/O Function FM IN This is an input terminal of FM IF signal.

  • Page 51: La6541-X (Ic801) : Servo Driver

    HX-Z1 5.19 LA6541-X (IC801) : Servo driver • Pin Layout & block diagram • Pin function PinNo. Symbol Function Power supply (Shorted to pin 24) Mute All BTL amplifier outputs ON/OFF Vin1 BTL AMP 1 input pin BTL AMP 1 input pin (For gain adjustment)

  • Page 52: Lb1641 (Ic851,Ic852) : Dc Motor Driver

    HX-Z1 5.20 LB1641 (IC851,IC852) : DC motor driver • Pin layout • Pin function Input Output Mode OUT1 OUT2 Brake CLOCKWISE COUNTER-CLOCKWISE Brake 5.21 LC72136N (IC2) : PLL frequency synthesizer • Pin layout • Block diagram • Pin function PinNo.

  • Page 53: Mn35510Al (Ic561) : Digital Servo & Digital Signal Processor

    HX-Z1 5.22MN35510AL (IC561) : Digital servo & Digital signal processor • Terminal Layout • Pin function PinNo. symbol Function PinNo. symbol Function BCLK O Not used Tracking error shunt signal output(H:shunt) LRCK O Not used PLAY O Not used SRDATA...
  • Page 54 HX-Z1 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan 2002/08 (No.21111)

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