Download
Share
Print this page
  1. Manuals
  2. Brands
  3. JVC Manuals
  4. DVD Player
  5. XV-LTR1
  6. Service manual

JVC XV-LTR1 Service Manual

Dvd video player
Hide thumbs Also See for XV-LTR1:

Advertisement

Quick Links

Download this manual See also: Instruction Manual
SERVICE MANUAL
Contents
Safety precautions ------------------------ 1-2
Preventing static electricity ------------- 1-3
Importance admistering
point on the safety ------------ 1-4
Precautions for service ----------------- 1-5
DVD VIDEO PLAYER
XV-LTR1
This service manual is printed on 100% recycled paper.
COPYRIGHT
2001 VICTOR COMPANY OF JAPAN, LTD.
Disassembly method -------------------- 1-6
Adjustment method ---------------------- 1-15
Troubleshooting -------------------------- 1-19
Description of major ICs ---------------- 1-23
XV-LTR1
Area Suffix
J --------- U.S.A.
No.A0020
Nov. 2001

Advertisement

loading

Related Manuals for JVC XV-LTR1

Summary of Contents for JVC XV-LTR1

  • Page 1 XV-LTR1 SERVICE MANUAL DVD VIDEO PLAYER XV-LTR1 Area Suffix J --------- U.S.A. Contents Safety precautions ------------------------ 1-2 Disassembly method -------------------- 1-6 Preventing static electricity ------------- 1-3 Adjustment method ---------------------- 1-15 Importance admistering Troubleshooting -------------------------- 1-19 point on the safety ------------ 1-4...
  • Page 2 XV-LTR1 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 XV-LTR1 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. 1.1. Grounding to prevent damage by static electricity Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as DVD players.
  • Page 4 XV-LTR1 Importance Admistering point on the Safety J703 J604 J602 C904 C1701 J691 S691 J601 B7029 L710 B7030 B7034 B7309 D702 B7026 Q754 C694 D901 B7031 C738 B7308 C737 B7307 B7124 B7306 R616 B7305 Q611 C739 C755 B7057 B7313 B7303...
  • Page 5 XV-LTR1 Precautions for Service Handling of Traverse Unit and Laser Pickup 1. Do not touch any peripheral element of the pickup or the actuator. 2. The traverse unit and the pickup are precision devices and therefore must not be subjected to strong shock.

  • Page 6: Disassembly Method

    XV-LTR1 Disassembly method <Main body> Removing the top cover (see Fig.1) 1.Remove the two screws A attaching the top cover on both sides of the body. 2.Remove the three screws B attaching the top A x 2 cover on the back of the body.
  • Page 7 XV-LTR1 Removing the rear panel (see Fig.5) *Prior to performing the following procedure, remove Rear panel the top cover. 1.Remove the four screws D attaching the rear panel on the back of the body. Removing the front panel assembly Fig.5 (see Fig.6,7)
  • Page 8 XV-LTR1 <Loading assembly section> Removing the clamper assembly Joint a Joint a (See Fig.1) Remove the four screws A attaching the clamper assembly. Move the clamper in the direction of the arrow to release the two joints a on both sides.
  • Page 9 XV-LTR1 Removing the traverse mechanism assembly (See Fig.4 and 5) Prior to performing the following procedure, remove the clamper assembly and the tray. Traverse mechanism Remove the four screws B attaching the traverse assembly mechanism assembly. ATTENTION: Before reattaching the traverse...
  • Page 10 XV-LTR1 Removing the motor assembly (See Fig.8 and 9) Belt Prior to performing the following procedure, remove the clamper assembly, the tray, the traverse mechanism assembly and the elevator. Remove the belt from the pulley. Remove the screw C attaching the motor assembly.
  • Page 11 XV-LTR1 Pulley gear Idle gear Pulley gear bracket Pulley gear Idle gear Pulley gear bracket Tads h Pulley gear Motor assembly Fig.10 Slide cam Removing the Idle gear / pulley gear / middle gear / slide cam (See Fig.10 to 12)
  • Page 12 XV-LTR1 <Traverse mechanism assembly section> Feed motor assembly Removing the feed motor assembly (See Fig.13) Unsolder the two soldering j on the spindle motor board. Remove the two screws F attaching the feed motor assembly. Pickup Notch k Soldering j...
  • Page 13 XV-LTR1 Removing the pickup (See Fig.16 and 17) Pickup Joint n Remove the screw I attaching the T spring (S) and Shaft holder the shaft holder. Remove also the plate. ATTENTION: When reattaching, make sure that the T spring (S) presses the shaft.
  • Page 14 XV-LTR1 Spindle motor Removing the spindle motor assembly (See Fig.19 to 21) Remove the three screws L attaching the spindle motor on the bottom of the mechanism base. ATTENTION: When reattaching, pass the card wire extending from the spindle motor board through the notch of the spindle base.
  • Page 15 XV-LTR1 Adjustment method (1) Initialization method If microprocessor (IC401,IC402,IC403) or pick-up is replaces, initialize the DVD player in the following matter 1)Take out the disc and close the tray. 2)Unplug the power plug. 3)Insert power plug into outlet while pressing both "PLAY" button and "OPEN/CLOSE" button.
  • Page 16 XV-LTR1 For Jitter value The jitter value is displayed on the FL display referring to the previous page. The jitter value is displayed by the hexadecimal number. In the following cases, please "Flap adjustment of the pick-up guide shaft" referring to the following page.
  • Page 17 XV-LTR1 (3) Flap adjustment of the pick-up guide shaft <Tool list for adjustment> * Hex wrench for adjustment Off-the-shelf (1.3mm) * Test disc VT-501 or VT-502 * Stud (four pieces set) Parts No. : JIGXVS40 (One is not used though there are four. ) * Assistance board and extension cord Parts No.
  • Page 18 XV-LTR1 <Adjustment preparation> 1.The mechanism assembly is made in the state from the main body from which is detached referring to the disassembly method. 2.Three studs are installed in the mechanism assembly respectively. 3.The servo control board is removed from the mechanism assembly, and puts into the state set up as shown in figure.

  • Page 19: Troubleshooting

    XV-LTR1 Troubleshooting Servo volume Press OPEN /CLOSE key Is tray Confirmation of tray drive circuit operation and circuit in surrounding correct? Is the traverse moving See "(3) Traverse movement error" along the innermost in "Check points for individual errors" perimeter for SW detection? "NO DISC"...
  • Page 20 XV-LTR1 Check points for each error (1) Spindle start error 1.Defective spindle motor *Are there several ohms resistance between each pin of CN201 "5-6","6-7","5-7"? (The power supply is turned off and measured.) *Is the sign wave of about 100mVp-p in the voltage had from each terminal? [ CN201"9"(H1-),"10"(H1+),"11"(H2-),"12"(H2+),"13"(H3-),"14"(H3+) ]...
  • Page 21 XV-LTR1 (3) Traverse movement NG 1.Defective traverse driver *Has the voltage come between terminal of CN101 "1" and "2" ? 2.Defective BTL driver (IC201) *Has the motor drive voltage gone out to IC201"17" or "18"? 3.Has the control signal come from servo IC or the microcomputer? *Is it "H"...
  • Page 22 XV-LTR1 (9) Neither picture nor sound is output 1.It is not possible to search *Has the tracking been turned on? *To "(5) Tracking ON NG" in "Check points for each error" when the tracking is not normal. *Is the feed operation normal? To "(3) traverse movement NG"...

  • Page 23: Description Of Major Ics

    XV-LTR1 Description of major ICs AN8703FH-V (IC101) : Frontend processor 1.Pin layout 2.Pin function Symbol Description Symbol Description Pin No. Pin No. LPC1 Laser input terminal (DVD) RFDIFO Non connect Laser drive signal output terminal (DVD) RFOUT LPC01 Connect to TP103...
  • Page 24 XV-LTR1 BA5983FM-X (IC201) : 4CH Driver 1.Block diagram STAND BY Level Shift Level Shift Level Shift Level Shift STAND BY CH1/2/3 2.Pin function Pin No. Symbol Description Pin No. Symbol Description Input for Bias-amplifier VO4(+) Non inverted output of CH4...

  • Page 25: Block Diagram

    XV-LTR1 BA6664FM-X (IC251) : 3Phase Motor Driver 1.Pin layout 2.Block diagram DRIVER GAIN SWITCH GAIN CONTROL CURRENT SENSE AMP HALL AMP TOROUE SERVO SENSE AMP SIGNAL Hall 1 Hall 2 SHORT BRAKE CK Q Hall 3 BRAKE MODE Hall Bias...
  • Page 26 XV-LTR1 3.Pin function BA6664FM-X Symbol Description Pin No. Non connect Output 3 for spindle motor Non connect Output 2 for spindle motor Non connect Non connect Output 1 for spindle motor Connect to ground Positive input for hall input AMP 1...
  • Page 27 XV-LTR1 K4S641632E-TC75 (IC504) :CMOS SDRAM 1.Pin layout 2.Block diagram Data input register LDQM Bank select 1M x 16 1M x 16 1M x 16 1M x 16 Column decoder Latency & Burst length LCKE Programming register LDQM LRAS LCBR LCAS...
  • Page 28 XV-LTR1 MN101C35DGN(IC701):System controller Pin function Symbol Description Pin No. DAC control data DDATA DAC control clock DCLK DAC control chip select DACOCS Not use DI/DO/CS/SK Power supply +B 5V Oscillation terminal 8MHz OSC2 Oscillation terminal 8MHz OSC1 Connect to ground...
  • Page 29 XV-LTR1 MN102L62GGY (IC401) : Unit CPU Pin function Symbol Function Symbol Function Pin No. Pin No. Micon wait signal input Connect to TP406 WAIT Read enable Connect to TP405 Spindle muting output to IC251 Connect to TP404 SPMUTE P85/TM5IO Write enable...
  • Page 30 XV-LTR1 MN103S28EGA (IC301) : Super optical disc controller 1.Terminal layout 2.Block diagram Host I/F DVD-ROM Analog MPEG I/F Formatter CD-PRE ATAPI High speed IO bus Instruction Servo I/O CGEN memory (core 1 I/O) (40KB) 32 bit CPU core 2Mbit Servo core...
  • Page 31 XV-LTR1 3.Pin function (MN103S28EGA : 2/4) Symbol Description Pin No. Read signal input from system controller System control data 37~44 CPUDT7~0 Non connect CLKOUT1 Test mode switch signal MMOD System reset NRST Master terminal polarity switch input MSTPOL Non connect...
  • Page 32 XV-LTR1 3.Pin function (MN103S28EGA : 3/4) Symbol Description Pin No. PLFLT1 Connect to capacitor 1 for PLL AVSS Connect to ground for analog circuit Connect to resistor for VREF reference current source VREFH Reference voltage input (2.2V) PLPG Non connect VHALF Reference voltage input (1.65V)
  • Page 33 XV-LTR1 3.Pin function (MN103S28EGA : 4/4) Symbol Description Pin No. Connect to ground VDD3 Power supply terminal for I/O (3.3V) HDD1 ATAPI host data 1 HDD13 ATAPI host data 13 HDD2 ATAPI host data 2 HDD12 ATAPI host data 12...
  • Page 34 XV-LTR1 CY24203SC-X (IC571) : MPEG/Audio clock generator with VCXO 1.Pin layout 2.Pin function Pin No. Symbol Description XOUT Reference crystal input Power supply VCXO 13.5M VCXO Input analog control for VCXO 16.9344M Connect to ground 16.9344M 16.9344 MHz clock output 13.5...
  • Page 35 XV-LTR1 MN35505-X (IC703) : DAC 1.Terminal layout LRCK DVDD1 DVDD2 VCOF DVSS2 XOUT DVSS1 OUT1C OUT2C AVDD1 AVDD2 OUT1D OUT2D AVSS1 AVSS2 2. Pin function Pin No. Symbol Description Control signal for DAC Digital data input LRCK L and R clock for DAC...
  • Page 36 XV-LTR1 MR27V1602E1UTPX (IC402) :P2 ROM of 1,048,576word x 16 bit / 2,097,152 word x 8 bit 1.Pin layout 2.Block diagram x 8 / x 16 Output select BYTE Memory Cell Matrix 1,048,576 x 16-Bit or 2,097,152 x 8-Bit Multiplexer Output Buffer...
  • Page 37 XV-LTR1 NJM4580M-X (IC741,IC751) : Dual OP amplifier Block diagram B OUT B -IN B +IN A OUT A -IN A +IN NJM78M05FA (IC953) : Regulator 1.Terminal layout 2.Block diagram INPUT 1.INPUT 2.GND 3.OUTPUT OUTPUT PQ05RD21 (IC951) : Regulator 1.Terminal layout 2.Block diagram...
  • Page 38 XV-LTR1 S-93C66AFJ-X (IC451) : EEPROM 1.Pin layout 2.Pin function Pin No. Symbol Description Non connect Power supply terminal Chip select input Serial clock input Serial data input Serial data output Connect to ground Non connect 1.Block diagram Memory Address array...
  • Page 39 XV-LTR1 ZIVA-4.1-PA2(IC501):Back end - Digital decoder 1.Terminal layout 2.Pin function (1/5) Pin No. Symbol Description Read strobe input Read/write strobe input Power supply terminal 3.3V Transfer not complete / data acknowledge. WAIT Active LOW to indicate host initiated transfer is complete.
  • Page 40 XV-LTR1 2.Pin function (ZIVA-4.1-PA2 : 2/5) Pin No. Symbol Description Connect to ground Non connect Non connect Non connect Non connect Non connect Programmable I/O terminal PIO0 Connect to ground Power supply terminal 3.3V Programmable I/O terminal PIO1 Programmable I/O terminal...
  • Page 41 XV-LTR1 2.Pin function (ZIVA-4.1-PA2 : 3/5) Pin No. Symbol Description SDRAM address MADDR6 SDRAM address MADDR5 Power supply terminal 2.5V Connect to ground SDRAM address MADDR4 SDRAM write enable Active LOW SDRAM column address SD-CAS Power supply terminal 3.3V Connect to ground...
  • Page 42 XV-LTR1 2.Pin function (ZIVA-4.1-PA2 : 4/5) Pin No. Symbol Description Connect to ground Non connect VSS_DAC Connect to ground for analog video DAC VSS_VIDEO Connect to ground for analog video DAC video output format : CVBS. Macrovision encoded CVBS VDD_DAC...
  • Page 43 XV-LTR1 2.Pin function (ZIVA-4.1-PA2 : 5/5) Pin No. Symbol Description DVD parallel compressed data from DVD DSP. or CD-G clock indicating DVD-DATA7/CDG-SCLK sub code data clock input or output VDACK In synchronous mode, bitstream data acknowledge. Asserted when DVD data is valid.Polarity is programmable...
  • Page 44 XV-LTR1 VICTOR COMPANY OF JAPAN, LIMITED PERSONAL & MOBILE NETWORK BUSINESS UNIT 1644, Shimotsuruma, Yamato, Kanagawa 242-8514, Japan Printed in Japan No.A0020 200111(S)
  • Page 45 XV-LTR1 PARTS LIST [XV-LTR1] * All printed circuit boards and its assemblies are not available as service parts. Area Suffix J ------------- U.S.A. - Contents - Exploded view of general assembly and parts list DVD Traverse mechanism assembly and parts list...
  • Page 46 XV-LTR1 Exploded view of general assembly and parts list Block No. M 24 BACK SIDE Grease UD-24H2R 23 BACK SIDE...
  • Page 47 XV-LTR1 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area LE10251-240A FRONT PANEL GN40006-001A JVC MARK E75896-001 FELT SPACER LE30898-001A WINDOW SCREEN LE30900-001A INDICATOR LE20537-003A PUSH BUTTON QYSBSF2608Z T.SCREW LE30899-002A REMOTE LENS QYSBSF2608Z T.SCREW...
  • Page 48 XV-LTR1 DVD Traverse mechanism assembly and parts list Block No. M Grease EBS0006-013B PG-641 CFD-4007ZY2 12.0mm 0.2mm 65.2mm...
  • Page 49 XV-LTR1 Parts list (DVD Traverse mechanism assembly) Block No. M2MM Item Parts number Parts name Q'ty Description Area LE20520-002A MECHA BASE LE20516-001A SPINDLE BASE QYSDST2605M TAPPING SCREW LE30909-001A HOLDER QAR0165-001 FEED MOTOR LV41510-001A FEED GEAR QYSPSPU2040M SCREW LV41512-001A FEED GEAR...
  • Page 50 XV-LTR1 DVD Loading mechanism assembly and parts list Block No. M Grease UD-24H2 EM-30L CFD-4007ZY2...
  • Page 51 XV-LTR1 Parts list (DVD Loading mechanism assembly) Block No. M3MM Item Parts number Parts name Q'ty Description Area LV10454-007A LOADING BASE QAR0164-001 MOTOR LV42087-001A MOTOR PULLEY QYSPSPU1730Z SCREW VKZ4777-003 MINI SCREW LV42209-001A BELT LV42084-002A PULLEYGEAR LV42085-002A MIDDLE GEAR LV42086-001A IDLE GEAR...
  • Page 52 XV-LTR1 Block No. 01 Electrical parts list (Main board) Item Remarks Item Parts number Parts name Remarks Area Parts number Parts name Area BK801 LE20539-001A FL HOLDER C 906 QCZ9079-102 C CAPACITOR 1000PF BK802 LE20540-001A FL HOLDER C 907 QETM2DM-157...
  • Page 53 XV-LTR1 (Main board) Block No. 01 Electrical parts list Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area D 902 F1T4-T2 FR DIODE Q 621 KTA1267/G/-T TR I/M D 903 F1T4-T2 FR DIODE Q 631...
  • Page 54 XV-LTR1 Block No. 01 Electrical parts list (Main board) Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area R 745 QRE141J-183Y C RESISTOR 18K 5% 1/4W R 974 NRSA63J-562X MG RESISTOR R 746 NRSA63J-332X MG RESISTOR...
  • Page 55 XV-LTR1 Block No. 02 Electrical parts list (DVD Servo control board) Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area NCB31CK-104X C CAPACITOR C 306 NEA70GM-107X E CAPACITOR NCB31CK-104X C CAPACITOR C 308 NEA70GM-107X E CAPACITOR...
  • Page 56 XV-LTR1 Block No. 02 Electrical parts list (DVD Servo control board) Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area C 515 NCB31CK-104X C CAPACITOR K 563 NQR0007-002X FERRITE BEADS C 516 NCB31CK-104X C CAPACITOR...
  • Page 57 XV-LTR1 Block No. 02 Electrical parts list (DVD Servo control board) Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area R 303 NRSA63J-473X MG RESISTOR R 527 NRSA63J-181X MG RESISTOR R 304 NRSA63J-473X MG RESISTOR...
  • Page 58 XV-LTR1 Packing materials and accessories parts list Block No. M4MM Block No. M5MM A1,A3~A8 3-14...

  • Page 59: Packing List

    XV-LTR1 Packing list Block No. M4MM Item Parts number Parts name Q'ty Description Area LE30945-071A PACKING CASE LE20607-001A PACKING PAD(F) LE20608-001A PACKING PAD(R) QPC06005515P POLY BAG Accessories list Block No. M5MM Item Parts number Parts name Q'ty Description Area LET0198-001A...
  • Page 60 XV-LTR1 In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.

  • Page 61: Block Diagrams

    XV-LTR1 Block diagrams DVD Servo control & AV decoder section(SHEET 5,6) CN502 CN503 WAITDEC DRVMUTE CN101 CN201 CN202...
  • Page 62 XV-LTR1 System control & audio output section(SHEET 4) RESET AIN0 AIN2 TO FW801 IC702 SHEET 1 RESET POWERSW STANDBYIND REMO SYSTEM CONTROLLER X701(8MHz) TO FW802 IC701 SHEET 1 +12V TO SHEET 2 -12V S2UDT SCLK P.MUTE S1~S24 BUSY 1G~13G TO SHEET 1...
  • Page 63 XV-LTR1 DC Regulator section (SHEET 2) CN961...
  • Page 64 XV-LTR1 Audio & Video signal output section(SHEET 3) C/R/V J601 L601, L602 Q601 Y/B/U COMPONENT TO SHEET 4 Q611 L611, L612 VIDEO OUT Q621 CVBS/Y/G L621, L622 S-VIDEO OUT CVBS COMPOSITE Q631 VIDEO OUT L631, L632 AUDIO_L AUDIO OUT AUDIO_R...
  • Page 65 TO CN702 SHEET 4 TO CN703 SHEET 4 FW801 FW802 QUM123-11DGZ4 QUM125-09DGZ4 S801 IC801 QSW0651-001Z GP1U271X R801 S821 S831 D801 SLR-342VC-T C801 S832 C802 47/10 S833 S834 S835 TO SHEET 2 S1-S24.1G-13G C821 TO SHEET 4 4.7/50 XV-LTR1 SHEET 1...
  • Page 66 P.MUTE 2SC2060/QR/-T D956 F1T4-T2 C982 C984 560/25 220/25 100/6.3 C987 C989 100/6.3 100/6.3 180/25 100/25 D957 F1T4-T2 L959 D.GND C957 100p Parts are safety assurance parts. When replacing those parts make sure to use the specified one. XV-LTR1 SHEET 2...
  • Page 67 R686 TO SHEET 4 R685 R688 Q692 R1731 R696 KRC102S-X Q691 Audio signal KRC102S-X R1732 +12V Video signal NTSC/PAL R695 C695 470/6.3 RGBSEL R694 C694 470/6.3 S691 QSW0454-001 Q696 KRA102S-X R681 C691 R699 100p R682 Q697 KRC102S-X XV-LTR1 SHEET 3...
  • Page 68 C729 C1702 C1701 47/25 R1722 47/25 R704 IC704 TC7S08F-W R1730 S1-S24.1G-13G J703 R705 K706 QNZ0487-001 NQR0227-004X SHEET 1 P.ON K705 R706 100K C707 C736 R1716 D1.8V NQR0227-004X 100/6.3 SHEET 2 -12V P.MUTE Audio signal XV-LTR1 SHEET 4 Video signal 2-10...
  • Page 69 XV-LTR1 DVD Servo control section K301 K302 K303 D1.8V K304 R341 5.6K DGND CN101 QGF0501F2-30X ODCIRQ2 R318 C144 ODCIRQ 0.01/16 R319 T2CD C113 TP309 C145 22/6.3 F2CD C347 TP308 0.1/16 ADSCIRQ TP307 T1CD C141 TP306 0.1/16 HDTYPE C310 0.1/16 F1CD...
  • Page 70 XV-LTR1 XV-LTR1 AV Decoder section R574 X571 NAX0513-001X DGND TP505 R571 DGND SGND K502 NQR0007-002X 0.1/16 C534 0.1/16 100/4 K501 TO CN961 NQR0007-002X 0.1/16 DGND SHEET 2 0.1/16 D501 0.1/16 1SR154-400-X CN502 MGND DGND SGND QGB2027L1-10X R552 K506 NQR0007-002X C527 0.1/16...
  • Page 71 XV-LTR1 Printed circuit boards Main board R663 J702 J601 J604 S691 P901 Q697 C691 R697 C736 C685 R778 C1701 R1721 K708 R768 R777 R767 C904 R705 R694 R685 C1704 R706 R681 C694 R665 L710 Q754 C686 Q692 R766 R791 R781...
  • Page 72 XV-LTR1 XV-LTR1 DVD Servo control board (Forward side) (Reverse side) C203 R222 TP80 R210 TP82 R212 TP84 CN502 C252 C216 IC251 R221 TP81 TP83 TP85 C333 TP86 C201 TP87 C304 R337 R336 R220 K301 C308 C329 C321 C259 C258 C257...