1. Manuals
  2. Brands
  3. JVC Manuals
  4. Receiver
  5. KD-LX300
  6. Service manual

JVC KD-LX300 Service Manual

Cd receiver
Hide thumbs Also See for KD-LX300:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Service Manual, Instruction Manual

SERVICE MANUAL

CD RECEIVER
KD-LX300/KD-LX100
Difference piont
KD-LX300
KD-LX100
Contents
Description of major ICs
COPYRIGHT
7
8
9
10
11
12
SEL
LINE IN
SUBWOOFER OUT
O
X
2001 VICTOR COMPANY OF JAPAN, LTD.
KD-LX300/KD-LX100
Area Suffix
J
Northern America
OFF
O
X
1-2
1-3
1-4
1-13
1-14
1-16
1-18
1-19
1-19
1-21~37
No.49635
Apr. 2001

Advertisement

Table of Contents
loading

Related Manuals for JVC KD-LX300

Summary of Contents for JVC KD-LX300

  • Page 1: Table Of Contents

    KD-LX300/KD-LX100 SERVICE MANUAL CD RECEIVER KD-LX300/KD-LX100 Area Suffix Northern America Difference piont LINE IN SUBWOOFER OUT KD-LX300 KD-LX100 Contents Safety preccaution Preventing static electricity Disassembly method Adjustment method 1-13 Extension cord connectiong method 1-14 Functions of the mechanism under the service mode...

  • Page 2: Safety Precaution

    KD-LX300/KD-LX100 Safety precaution Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system. Please use enough caution not to see the beam directly or touch it in case of an...

  • Page 3: Preventing Static Electricity

    KD-LX300/KD-LX100 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: Disassembly Method

    Move the top chassis upward and disconnect the CD mechanism connector from the main board connector by pulling it. Remove the top chassis from the body. Fig.2 Top chassis Heat sink Fig.4-1 (KD-LX300) Fig.3 Top chassis Fig.4-2 (KD-LX100) Fig.5...
  • Page 5 CN701 on the main board assembly. Remove the four screws H attaching the front panel assembly on both sides of the body. Remove the front panel toward the front. Front panel assembly Fig.6-1 (KD-LX300) CN701 Front panel assembly Fig.6-2 (KD-LX100) Front panel assembly...
  • Page 6 Removing the feed motor (L) (See Fig.11) Prior to performing the following procedure, remove Lifter unit assembly the lifter unit. Fig.10-1 (KD-LX300) Remove the washer attaching the clutch assembly and detach the clutch assembly from the shaft of the lifter unit.
  • Page 7 KD-LX300/KD-LX100 Removing the operation assembly (See Fig.13 to 17) Prior to performing the following procedure, remove the top chassis assembly, the front panel assembly and the lifer unit. Disconnect the card wire from connector CN702 on Bracket (L) the main board and remove the operation assembly.
  • Page 8 KD-LX300/KD-LX100 Removing the operation switch board (See Fig.17 and 18) Prior to performing the following procedure, remove the operation assembly. Remove the six screws N attaching the button panel on the operation assembly. Pull out the operation switch board from inside of the Button panel button panel.
  • Page 9 CN702 Front panel assembly rear heat sink.) Fig.20-1 (KD-LX300) Remove the three screws Q attaching the rear heat sink on the back of the body. Remove the two screws R and the screw S attaching the rear panel.

  • Page 10: Cd Mechanism Section

    KD-LX300/KD-LX100 <CD mechanism section> Damper bracket Pickup cover Removing the CD mechanism control board (See Fig.1 and 2) Remove the screw A and the pickup cover attached to the front bracket with the double-sided tapes. Unsolder the three parts a, b and c on the CD mechanism control board.
  • Page 11 KD-LX300/KD-LX100 Loading motor Belt Fig.5 Removing the CD mechanism assembly CD mechanism assembly Damper bracket (See Fig.1, 6 to 9) Prior to performing the following procedure, remove the CD mechanism control board and the front bracket (loading motor). Flame Remove the three screws E...
  • Page 12 KD-LX300/KD-LX100 Removing the feed motor assmbly Part j FD screw (See Fig.10) Feed motor assembly Prior to performing the following procedure, remove the CD mechanism control board, the front bracket Part i (loading motor) and the CD mechanism assembly. Remove the two screws G and the feed motor assembly.

  • Page 13: Adjustment Method

    6. Digital tester FM 87.5MHz ~ 108.0MHz 7. Tracking offset meter MW 520kHz ~ 1620 kHz 8. Test Disc JVC :CTS-1000 Dummy load 9. Extension cable for check Exclusive dummy load should be used for AM,and FM. For EXTGS004-26P 1 FM dummy load,there is a loss of 6dB between SSG output and antenna input.The loss of 6dB need not be considered...

  • Page 14: Extension Cord Connectiong Method

    KD-LX300/KD-LX100 Extension cord connecting method Using the extention cords to connect the front panel with the main board Remove the main board follwing the disassembly methode. Then reattachi the heat sink to main board. Using the 2pin extention cord (EXTLX001-2p),...
  • Page 15 KD-LX300/KD-LX100 Extension cord list EXTLX002-JIG : Kit including the following 8 extension parts. Parts number Quantity Description EXTLX001-2P 2Pin, 30cm extension cord EXTLX001-6PF 6Pin, 30cm flat wire EXTLX001-6PC 6Pin x 2, interlocking connector EXTLX002-16PF 16Pin flat wire EXTLX002-16PC 16Pin, interlocking connector...

  • Page 16: Functions Of The Mechanism Under The Service Mode

    KD-LX300/KD-LX100 Functions of the mechanism under the service mode With the three error modes stored in maximum in the internal memory of the mechanism in the body of this system, it is posible under the service mode to call the contents of error according to the following steps when any error has occurred.
  • Page 17 KD-LX300/KD-LX100 1. Display of mechanism error Occurrence condition Description Error codes 09 0011 1. SW4 is not turned off. Disc loading error 09 0013 2. SW3 is not turned on. Eject error 01 0021 1. SW# is not turned off.

  • Page 18: Flow Of Functional Operation Until Toc Read

    KD-LX300/KD-LX100 Flow of functional operation until TOC read Power ON • When the laser diode correctly Set Function to CD • When the pickup correctly moves emits to the inner area of the disc Microprocessor Microprocessor Disc inserted commands commands TC9462 "53"...
  • Page 19 KD-LX300/KD-LX100 Feed Section Check CD 9V Is the voltage output at Is the wiring for IC521 Is 5V present at IC581 and 5V. IC521 pin "53" 5V or 0V? (90) ~ (100) correct? pin "11"? Check the vicinity of IC521.

  • Page 20: Maintenance Of Laser Pickup

    KD-LX300/KD-LX100 Maintenance 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 21 KD-LX300/KD-LX100 Description of major ICs FAN8037 (IC661) : CD driver 1. Pin layout & Block diagram 48 47 46 45 44 43 41 40 39 38 37 STAND BY T.S.D ALL MUTE POWER SAVE 13 14 15 16 17 18...
  • Page 22 KD-LX300/KD-LX100 UPD784215AGC-128 (IC701) : UNIT CPU 1.Terminal Layout 2.Pin Function (1/2) Function Symbol Pin No. Detection switch of CD mechanism Detection switch of CD mechanism Detection switch of CD mechanism Reset signal input from CD mechanism REST-SW Loading motor control signal output...
  • Page 23 KD-LX300/KD-LX100 Pin Function (2/2) Function Symbol Pin No. LCD-CE1 Chip enable output to LCD driver BUZZER BUZZER control signal output E2PR-DA-I Data input terminal from EEPROM E2PR-DA-O Data output terminal for EEPROM E2PR-CLK Clock signal I/O terminal with EEPROM BUS-I/O...
  • Page 24 KD-LX300/KD-LX100 TC9490FA (IC521) : DSP 1. Pin layout & Block diagram DVss3 49 32 TEZI Clock RO 50 31 TEI generator 30 SBAD DVDD3 51 DVR 52 29 FEI 1-bit Servo control LO 53 28 RFRP 27 RFZI DVss3 54...
  • Page 25 KD-LX300/KD-LX100 2. Pin function (2/2) Pin No. Symbol Function /UHSO Playback speed mode output terminal PVDD3 PLL-only 3.3V power supply voltage terminal EFM and PLCK phase difference signal output terminal TMAX TMAX detection result output terminal LPFN Inverted input terminal for PLL LPF amp...
  • Page 26 KD-LX300/KD-LX100 BA3220FV-X (IC301,IC401) : Driver 1. Pin layout & Block diagram LGND OUTL OUTR RGND CR - CR + REFL REFR FILTER 2. Pin function Symbol Function Powe supply terminal for amp. power supply terminal. input terminal. Negative feedback terminal.
  • Page 27 KD-LX300/KD-LX100 BD3860K (IC911) : E. volume 1.Terminal layout 2.Bockdiagram GND FIL VCC SEL1 VIN1 LOUD1 HF1 LF1 DET1 VCA1 MIX1 BBOUT1 TIN1 TNF1 BNF1 BOUT1 POWER FADER SUPPLY MAIN INPUT OUTF1 CH1 FRONT TREBLE BASS VOLUME GAIN 0 -5 dB...
  • Page 28 KD-LX300/KD-LX100 BR24C16F-X (IC703) : EEPROM 1. Pin layout 2. Pin function Symbol I/O Function Power supply. A0,A1,A2 No use connect to GND. Serial clock input. Serial data I/O of slave and ward address. Write protect terminal. 3. Block diagram 16kbit EEPROM allay...
  • Page 29 KD-LX300/KD-LX100 HA13164 (IC961) : Regulator 1.Terminal layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 2.Block diagram 100u 0.1u BATT.DET OUT ANT OUT Surge Protector 0.1u EXT OUT COMPOUT BIAS 0.1u VDD OUT ANT CTRL 0.1u...
  • Page 30 KD-LX300/KD-LX100 NJM2100M (IC821) : Operation amp HD74HC126FP (IC771) : Changer control A OUT B OUT – A IN– + – A IN+ B IN– B IN+ HD74HC126 M5282FP-XE (IC321) : E. volume 1. Pin layout 2. Block diagram 3. Pin function...
  • Page 31 KD-LX300/KD-LX100 LA4743K (IC941) : Power amp 1.Block diagram 2.Terminal layout 3.Pin function Pin No. Symbol Function Header of IC Power GND Outpur(-) for front Rch OUTRR- Stand by input STBY Output (+) for front Rch OUTRR+ Power input VCC1/2 Output (-) for rear Rch...
  • Page 32 KD-LX300/KD-LX100 LC75811W (IC602) : LCD driver 1. Pin layout 2. Block diagram COMMON SEGMENT DRIVER DRIVER LATCH CGRAM CGROM ADRAM VLCD INSTRUCTION 5x9x16 5x9x240 DECODER bits bits bits VLCD1 VLCD2 ADDRESS DCRAM INSTRUCTION VLCD3 COUNTER 48x8 REGISTER bits ADDRESS REGISTER...
  • Page 33 KD-LX300/KD-LX100 LC75823W (IC602) : LCD driver 1. Pin Layout & Symbol 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 2.
  • Page 34 KD-LX300/KD-LX100 NJM2904M (IC951) : Dual ope amp NJM4565MD (IC323,IC960) : Ope amp 1. Pin layout & Block diagram 1. Pin layout A OUTPUT 1 A OUT 1 8 V+ A - INPUT 2 B OUTPUT A -IN 2 7 B OUT...
  • Page 35 KD-LX300/KD-LX100 TA2147F-X (IC601) : Head amp 1. Pin layout & Block diagram 10 pF 30 k 40 k 1.3V 180 k 40 pF 40 k 60 A 10 pF 2. Pin function Pin No. Symbol Function 3.3V power supply terminal...
  • Page 36 KD-LX300/KD-LX100 TA8273H (IC941) : 4ch amp 1. Pin layout 2. Block diagram Vcc1 Vcc2 OUT1 (+) PW-GND1 OUT1 (-) OUT2 (+) PW-GND2 OUT2 (-) AUX IN OUT3 (+) PW-GND3 OUT3 (-) OUT4 (+) PW-GND4 OUT4 (-) DIAGNOSIS STBY MUTE 1-36...
  • Page 37 KD-LX300/KD-LX100 TB2118F-X (IC21) : PLL 1.Terminal Layout 2.Block diagram Constant power supply voltage Buff. ON/OFF AM CP. Phase OSC circuit Reference Counter Comparator switch FM VCO 4-bit Prescaler Swallow counter 12-bit AMVCO REG. Programmable counter 20-bit BINARY COUNTER Resistor 1...
  • Page 38 KD-LX300/KD-LX100 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan 200104 (No.49635)

This manual is also suitable for:

Kd-lx100

Table of Contents