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JVC FS-H30 Service Manual

Compact component system
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SERVICE MANUAL
COMPACT COMPONENT SYSTEM
5
2003
22062
1
Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
4
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
FS-H30
COMPACT COMPONENT SYSTEM
TABLE OF CONTENTS
Area Suffix
J -------------------- U.S.A.
C ------------------ Canada
No.22062
2003/5

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Summary of Contents for JVC FS-H30

  • Page 1 SERVICE MANUAL COMPACT COMPONENT SYSTEM 22062 2003 FS-H30 COMPACT COMPONENT SYSTEM Area Suffix J -------------------- U.S.A. C ------------------ Canada TABLE OF CONTENTS Precautions ................1-3 Disassembly method .
  • Page 2 SPECIFICATION 20 W (10 W + 10 W) at 4 Ω (10% THD) Amplifier Output Power 12 W per channel, min. RMS, driven into 4Ω at from 80 Hz to 15 kHz with no more than 10% total harmonic distortion. Audio input sensitivity/Impedance (at 1 kHz) AUX 500 mV/48.75 kΩ...
  • Page 3 SECTION 1 Precautions 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 Importance administering point on the safety C901 D901 C902 D902 B911 C904 B912 D904 B913 B914 C903 D903 D905 T901 Z901 Z911 Caution: For continued protection against risk of fire, replace only with same type 1A/125V for F901, 6.3A/125V for F902 and F903. This symbol specifies type of fast operating fuse.
  • Page 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. 1.6.1 Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
  • Page 6 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 herein may result in 3.CAUTION : There are no serviceable parts inside the hazardous radiation exposure.
  • Page 7 SECTION 2 Disassembly method Main body 2.1.1 Removing the rear panel (See Fig.1,2) (1) From behind the body, remove the eight screws A attach- ing the rear panel. (2) Turing the body upside down, remove the two screws B at- taching the rear panel, and remove.
  • Page 8 2.1.2 Removning the side panel (L) and (R) (See Fig.2~5) • Prior to performing the following procedure, remove the rear panel. (1) Turning the body upside down, remove the two screws C attaching the front panel assembly. (2) Turning the body initial position, open the CD door while pressing the upper OPEN button.
  • Page 9 2.1.3 Removing the CD player assembly (See Fig.6,7) • Prior to performing the following procedure, remove the rear CD player assembly CD servo control board panel and the left and right side panels. CN604 (1) Disconnect the card wires from the two connectors CN603 CN603 and CN604 on the CD servo control board.
  • Page 10 2.1.4 Removing the power amplifier board and heat sink (See Fig.8~10) • Prior to performing the following procedure, remove the rear Power amplifier board panel, the left and right side panels, and the CD player assem- CN301 bly. (1) Remove the five screws E and F attaching the heat sink. (2) Disconnect the wire from connector CN901 on the power supply board.
  • Page 11 2.1.5 Removing the tuner board (See Fig.11) • Prior to performing the following procedure, remove the rear panel, the left and right side panels, and the CD player assem- bly. (1) Remove the screw H attaching the tuner board from the right side of the body.
  • Page 12 2.1.7 Remove the power transformer and power supply board (See Fig.14,15) • Prior to performing the following procedure, remove the rear Jack holder panel, the left and right side panels, the CD player assembly, the power amplifier board and the tuner board. (1) Remove the screw I attaching the jack holder and release joint e, and then remove jack holder.
  • Page 13 2.1.8 Remove the cassette mechanism assembly (See Fig.16,17) • Prior to performing the following procedure, remove the front Front panel assembly panel assembly. (1) Disconnect the card wire from the connector CN713 on the LCD system CPU board. (2) Remove the four screws K and L attaching the cassette mechanism assembly, and remove.
  • Page 14 2.1.9 Remove the LCD system CPU board (See Fig.18) (1) Disconnect the wire from the connector CN716 on the LCD system CPU board. (2) Release the two joints f and pull out the LCD system CPU board. CN716 LCD system CPU board Fig.18 2.1.10 Removing the operating switch board (See Fig.19,20)
  • Page 15 Cassette mechanism assembly Cassette mechanism assembly Fly wheelR 2.2.1 Removing the Play/Record & Clear head (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 2.2.2 Removing the head amplifier & mechanism control board (See Fig.4) (1) Turn over the cassette mechanism assembly and remove Head amplifier & mecha control board the three screws A attaching the head amplifier & mecha- nism control board. CN32 (2) Disconnect the flexible wire from connector CN31 on the head amplifier &...
  • Page 17 2.2.4 Removing the flywheel (See Fig.8, 9) • Prior to performing the following procedure, remove the head Fly wheel R Fly wheel L 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 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 SECTION 3 Adjustment Adjustment method Measurement Instruments Required for Tuner section Adjustment FM tuning range: 87.5MHz~108.00MHz 1. Low frequency oscillator AM tuning range: 530kHz~1,710kHz This oscillator should have a capacity to output 0dBs to 600 at an oscillation frequency of Voltage applied to tuner +B : DC5.7V 50Hz-20kHz.
  • Page 20 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 Motor speed CN33 VR37 C374...
  • Page 21 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 adjustment screw for forward side and reverse : Speaker out side.
  • Page 22 3.2.2 Electrical adjustment Adjustment Item Condition Measurement method Ref.value position VR31 AC-225 Recording 1.Set the test tape(AC-514 TYPE Forward or Reverse :4.20 A BIAS Test tape AC-225 TYPE ), then make REC/PAUSE AC-514 adjustment condition. :AC-514 TYPE :4.0 A :AC-225 TYPE 2.Connect 100 to recording head by series, Output terminal...
  • Page 23 Flow of functional operation until TOC read (CD) Check Point Slider turns REST Power ON Power Key Check that the voltage at the pin4 SW ON. of CN601 is 0V (a moment)? Automatic tuning of TE offset Check that the voltage at the Laser ON pin2 of IC601 is 0V? Detection of disc...
  • Page 24 Maintenance of laser pickup (CD) 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 power cord from the ac outlet. with a alcohol soaked cotton swab.

  • Page 25: Description Of Major Ics

    SECTION 4 Description of major ICs CD4094BC (IC33) : Serial to parallel port extension • Pin layout STROBE DATA OUTPUT ENABLE CLOCK • Block diagram DATA 8-STAGE SERIAL SHIFT REGISTER OUTPUT CLOCK 8-BIT STROBE LATHES 3-STATE OUTPUT OUTPUTS ENABLE PARALLEL OUTPUT (No.22062)1-25...
  • Page 26 AN22000A-W (IC601) : RF & SERVO AMP • Terminal layout 9 10 11 12 13 14 15 16 • Block diagram 3TOUT NRFDET FEOUT TEOUT TEBPF VDET VREF 1-26 (No.22062)
  • Page 27 • Pin function Symbol I/O Function Symbol I/O Function - Ground I APC Amp. input terminal VREF O VREF output terminal O APC Amp. output terminal VDET O VDET output terminal - Power supply terminal TEBPF I VDET output terminal I RF adder Amp.
  • Page 28 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 TEST 4 PB-NF1(R) ALC ON/OFF 1-28 (No.22062)
  • Page 29 • 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) REC output ALC ON/OFF Mode control input TEST4...
  • Page 30 HA17758A (IC301) : Dual operational amp • Pin layout Vout1 Vin(-)1 Vout2 Vin(+)1 Vin(-)2 Vin(+)2 KIA78S05P-T (IC604) : Regulater • Pin layout • Block diagram 3 INPUT 1 OUTPUT 2 COMMON 1-30 (No.22062)
  • Page 31 KIA78S06P-T (IC932) : Regulator • Pin layout 1 2 3 • Block diagram 3 INPUT 1 OUTPUT 2 COMMON (No.22062)1-31...
  • Page 32 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 LA4663 (IC300) : 2ch power amp • Pin layout • Block diagram 2200 SIGNAL VCC1 VCC2 STAND BY MUTE CH 1 RL=4 to 8 +OUT1 Output Amp GND1 -OUT1 Input Amp OUTPUT-GND SHORT OUTPUT-VCC SHORT POLYESTER RL SHORT FILM THERMAL SHUTDOWN CAPACITOR PROTECTION CIRCUITS RL=4 to 8...
  • Page 34 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 driver shift Mute Vin1...
  • Page 35 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 Detector 12bit Programmable DriverS...
  • Page 36 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 SMOOTHING DATA RDDA...
  • Page 37 4.13 LC75342 (IC302) : E. volume • Terminal layout • Block diagram LVref CONTROL CIRCUIT LOGIC CIRCUIT INTERFACE CONTROL RVref CIRCUIT • Pin function Pin No. Symbol Function Pin No. Symbol Function Serial data and clock input for IC control Input signal connections Chip enable Input signal connections...
  • Page 38 4.14 MN662748RPMFA (IC603) : Digital servo & Digital signal processer • Pin layout 80~61 21~40 • Pin function Pin No. Symbol I/O Function Pin No. Symbol I/O Function I RF signal input BCLK - Not use IREF I Reference current input LRCK - Not use I Bias pin for DSL...
  • Page 39 4.15 MN101C57CEW (IC931) : System micon • Pin layout 75 ~ 51 1 ~ 25 • Pin function Pin No. Symbol Description VLC1~VLC3 LCD BIAS VOLTAGE Not use REEL Tape End Detection _MPX FM Stereo Detection ('L'=STEREO) PERIOD Tuner PLL Strobe F_TU Tuner Function ('H'=TUNER) Active Hyper Bass('L'=ON)
  • Page 40 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.22062) Printed in Japan...