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JVC HX-Z1 Service Manual

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See also: Service Manual , Instruction Manual
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
Contents
Safety precautions
point on the safety
1-2
1-3
1-4
1-5
1-6
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
COMPACT
DIGITAL AUDIO
until TOC read (CD)
HX-Z1
Area Suffix
J ------------------------- U.S.A.
C ----------------------- Canada
1-24
1-29
1-30
1-30
1-31~41
No.21088
1-1
Jun. 2002

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  • Page 1: Table Of Contents

    HX-Z1 HX-Z1 SERVICE MANUAL COMPACT COMPONENT SYSTEM HX-Z1 COMPACT DIGITAL AUDIO Area Suffix J ------------------------- U.S.A. C ----------------------- Canada Contents Safety precautions Adjustment method 1-24 Preventing static electricity Flow of functional operation Important for laser products until TOC read (CD)
  • Page 2 HX-Z1 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

    HX-Z1 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

    HX-Z1 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: Importance Administering

    HX-Z1 Importance administering point on the safety Caution: For continued protection against risk of fire, replace only with same type 2.5A/125V for F103, 5A/125V for F001 and 6A/125V for F101, F102. This symbolspecifies type of fast operating fuse. Precaution: Pour evitisques de fer reux, remplacez le fusible de surete de F103 comme le meme type que 2.5A/125V, et 5A/125V pour F001 et 6A/125V...

  • Page 6: Disassembly Method

    HX-Z1 Disassembly method Metal cover <Main board> 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. Remove the metal cover from the body by lifting the rear part of the cover.
  • Page 7 HX-Z1 Front panel assembly Removing the front panel assembly (See Fig.6 ~ 9) Bridge board CN701 Prior to performing the following procedure, remove the metal cover and the CD changer mechanism assembly. Disconnect the card wire from connector CN44 and...
  • Page 8 HX-Z1 Removing the antenna board (See Fig.10, 11) Antenna board Rear panel Prior to performing the following procedure, remove the metal cover. REFERENCE: There is no need to remove the CD changer mechanism assembly. Disconnect the card wire from connector CN1 on the antenna board on the right side of the body.
  • Page 9 HX-Z1 Removing the rear panel Tie band Inner bar (See Fig.12 ~ 17) Prior to performing the following procedure, remove Joint b the metal cover and the CD changer mechanism assembly. Remove holding board by remove two plastic rivets and then slide out the holding board as shown in fig.
  • Page 10 HX-Z1 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. Remove two screws G on the rear panel. Rotate fan assembly in clockwise direction to release fan assembly from rear panel (joint d).
  • Page 11 HX-Z1 Plastic rivet 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 Inner bar main board.
  • Page 12 HX-Z1 Remove the two screws I attaching the heat sink bracket and move the heat sink in the direction of the Bridge board arrow to release 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 Removing power transformer assembly (See Fig.28, 29) Prior to performing the following procedure, remove Power transformer assembly the metal cover, the CD changer mechanism assembly, the rear panel, the main board and the bridge board / regulator board. Remove the screw N attaching the primary board.
  • Page 14 HX-Z1 Removing the display system control board (See Fig.31, 32) Remove the four screws S attaching the stay bracket (1). Disconnect the card wire from connector CN43 and Display system CN880 on the display system control board. Stay bracket (1)
  • Page 15 HX-Z1 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 assembly, remove the four screws A retaining the CD servo control CN854 board. 4.Absorb the four soldered positions "a" of the right and left motors with a soldering absorber.
  • Page 16 HX-Z1 Stopper Check whether the lifter unit stopper has been caught into the hole at the section "e" of CD tray assembly as shown in Fig.5. Make sure that the driver unit elevator is positioned as shown in Fig.6 from to the second or fifth hole on the left side face of the CD changer mechanism assembly.
  • Page 17 HX-Z1 Cams R1, R2 assembly Removing the CD loading mechanism assembly(See Fig.10) 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 18: See Fig

    HX-Z1 Removing the try select switch board Chassis assembly (See Fig.14) Remove the two screws G retaining the tray select switch board. Tray select switch board Disconnect the tray select switch board from connector CN804 on the CD servo control board.
  • Page 19 HX-Z1 Removing the actuator motor and belt Gear bracket (See Fig.18~21) Remove the two screws I retaining the gear bracket (See Fig.18). While pressing the pawl "t" fixing the gear bracket in the arrow direction, remove the gear bracket Pulley gear (See Fig.18).
  • Page 20 HX-Z1 Removing the cams R1/R2 assembly Slit washer and cam gear q(See Fig.22) Cam R2 Slit washer Remove the slit washer fixing the cams R1 and R2 assembly. Cam gear q By removing the two pawls "w" fixing the cam R1, separate R2 from R1.

  • Page 21: Cassette Mechanism Section

    HX-Z1 <Cassette mechanism section> Cassette mechanism Removing the playback / recording & eraser head (See Fig. 1 ~ 3) 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 Flywheel (R) head mount has gone out with a click (See Fig.
  • Page 22 HX-Z1 Removing the head amplifier & mechanism control board (See Fig. 4) Belt Remove the cassette mechanism assembly. Main motor CN32 assembly After turning over th cassette mechanism assembly, remove the three screws A retaining the head amplifier & mechanism control board.
  • Page 23 HX-Z1 Removing the flywheel (See Fig. 7, 8) Remove the head amplifier & mechanism control P.C. board. Remove the main motor assembly. After turning over the cassette mechanism, remove Flywheel (R) Flywheel (L) 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 24: Adjustment Method

    HX-Z1 Adjustment method Tuner section Measurement Instruments Required for Adjustment FM Band cover: 87.5 108MHz 1. Low frequency oscillator MW Band cover: 522 1,629kHz This oscillator should have a capacity to output LW Band cover: 144 288kHz 0dBs to 600...
  • Page 25 HX-Z1 << >> Arrangement of Adjusting Position Cassette mechanism section Cassette mechanism section (Back side) Head azimuth Head azimuth adjusting screw adjusting screw (Forward side) (Reverse side) Head azimuth Head azimuth Playback/Recording & adjusting screw adjusting screw eraser head (Forward side)
  • Page 26 HX-Z1 Tape Recorder Section Measurement Adjusting Standard Items Measurement method conditions positions Values Adjust the head Confirmation Test tape 1 Playback the test tape VTT703L (8kHz) Maximum azimuth screw of head angle : VTT703L (8kHz) 2 With the recording & playback mechanism,...
  • Page 27 HX-Z1 Electrical Performance Adjusting Measurement Standard Items Measurement method positions conditions Values VR31 AC-225 Adjustment of Mode: Forward or 1 With the recording and playback : 4.20 recording bias reverse mode mechanism, load the test tapes (AC-514 to AC-514 current...
  • Page 28 HX-Z1 Extension code connecting method Main board CN661 CD servo control board CN651 1-28...

  • Page 29: Flow Of Functional Operation Until Toc Read

    HX-Z1 Flow of functional operation until TOC read Check Point Slider turns REST Play Key Power ON Confirm that the voltage at the pin5 SW ON. of CN801 is "H"\"L"\"H". Automatic tuning of TE offset Check that the voltage at the...

  • Page 30: Maintenance Of Laser Pickup

    HX-Z1 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 31: Description Of Major Ics

    HX-Z1 Description of major ICs BU2092 (IC642) : Port expander 1.Pin Layout DATA CLOCK CONTROL CIRCUIT 2.Pin function Symbol Function Pin No. Connect to GND DATA Serial Data input CLOCK Shift Clock of Data Latch Clock of Data 5~16 Q0~Q11...
  • Page 32 HX-Z1 BH3874AKS (IC434) : Audio sound processor 1. Pin layout 2. Block diagram 63 64 3 4 7 8 11 12 -9dB FILTER INLD 0~30dB -30dB~- INLC 11dB INLB OUTL INLA 5 BAND EQ BASS5 19dB FILTER 5 BAND EQ...
  • Page 33 HX-Z1 3. 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 34 HX-Z1 KIA7805API (IC360) : Regulator 1. Pin layout 1.VCC 2.GND 3.OUTPUT 2.Block diagram INPUT Q11-1 OUTPUT COMMON (GND) 1-34...
  • Page 35 HX-Z1 KIA7808API (IC303) : Regulator 1. Pin layout 1.VCC 2.GND 3.OUTPUT 2.Block diagram INPUT Q11-1 OUTPUT COMMON (GND) 1-35...
  • Page 36 HX-Z1 KIA7812API (IC240) : Regulator 1. Pin layout 1.VCC 2.GND 3.OUTPUT 2.Block diagram INPUT Q11-1 OUTPUT COMMON (GND) 1-36...
  • Page 37 HX-Z1 KIA7042AP-T (IC830) : Regulator 1. Pin layout 2. Block diagram 1.VCC 2.GND 3.OUT NJM4580D (IC501, IC502, IC571) : LPF, Mic and H.phone amp. 1. Pin layout A OUT A -IN B OUT A +IN B -IN B +IN (TOP VIEW) 2.
  • Page 38 HX-Z1 GP1U271XK (IC951) : Receiver for remote – Limiter Integrator Comparator Amp. Demodulator B.P.F Vout STK402-050 (IC602) : 2ch AF power amp. Pin layout 2.Block diagra TR1E TR12 TR10 TR13 TR16 1-38...
  • Page 39 HX-Z1 STK402-010 (IC701) : 2ch AF power amp. 1. Pin layout 2.Block diagra TR41 18 17 Comparator TR12 TR11 TR16 TR19 R1 C1 TR14 TR13 TR18 TR20 TR10 TR15 TR17 Comparator TR51 9 8 11 10 1-39...
  • Page 40 HX-Z1 UPD784975AGF303 (IC810) : Main micon 1. Pin layout 2. Pin function Pin NO. Name Function Pin NO. Name Function AVDD AD VDD, same as VDD1 SPI A SPI A data SPIDTI SPI analog input SPI B SPI B data...
  • Page 41 HX-Z1 KIA7809API (IC305) : Regulator 1.Pin layout 1.INPUT 2.COMMON 3.OUTPUT 1 2 3 2.Block diagram INPUT Q11-1 OUTPUT COMMON (GND) 1-41...

  • Page 42: Hx-Z1

    HX-Z1 HX-Z1 VICTOR COMPANY OF JAPAN, LIMITED AUDIO & COMUNICATION BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan 1-42 (No.21088) 200206...

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