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JVC XV-521BK Service Manual
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SERVICE MANUAL
XV-521BK/523GD/522SL
Area Suffix
XV-521BK
B
EN
EG
Germany, France, Greece,
Netherlands, Switzerland
ES
EE
Contents
Safety precautions
Importance administering
point on the safety
Disassembly method
DVD PLAYER
U.K.
Northern Europe
Spain, Italy
Russian Federation
1-2
1-3
1-4
COPYRIGHT
2000 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
XV-523GD/522SL
B
EN
Northern Europe
EG
Germany, France, Greece,
Netherlands, Switzerland
ES
Main Adjustment
Troubleshooting
Precautions for service
Description of major ICs
XV-521BK/523GD/522SL
U.K.
Spain, Italy
1-14
1-21
1-22
1-23
No.20848
Jul. 2000

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Summary of Contents for JVC XV-521BK

  • Page 1 XV-521BK/523GD/522SL SERVICE MANUAL DVD PLAYER XV-521BK/523GD/522SL Area Suffix Area Suffix XV-521BK XV-523GD/522SL U.K. U.K. Northern Europe Northern Europe Germany, France, Greece, Germany, France, Greece, Netherlands, Switzerland Netherlands, Switzerland Spain, Italy Spain, Italy Russian Federation Contents Safety precautions Main Adjustment 1-14...
  • Page 2 XV-521BK/523GD/522SL Safety precautions 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.
  • Page 3 XV-521BK/523GD/522SL Dismantling and assembling the traverse unit 1. Notice regarding replacement of optical pickup 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 to the optical pickup or connected devices.
  • Page 4 XV-521BK/523GD/522SL Disassembly method Top cover < Main body> Removing the top cover (See Fig.1) Remove the four screws A on both side of the body. Remove the two screws B on the back of the body. Lift up the rear part of the top cover while pulling the lower part of the sides, then detach upward.
  • Page 5 XV-521BK/523GD/522SL Removing the fitting (See Fig.3 to 6) Front panel Hole Prior to performing the following procedure, remove the top cover. ATTENTION: To remove the front panel assembly and the DVD mechanism assembly, remove the fitting in advance. by hand Turn over the body.
  • Page 6 XV-521BK/523GD/522SL Removing the front panel assembly (See Fig.7 to 10) DC mechanism assembly Main board AC jack board Prior to performing the following procedure, remove the top cover and the fitting. Disconnect the card wire from connector CN703 on the main board.
  • Page 7 XV-521BK/523GD/522SL Loading tray Removing the DVD mechanism assembly (See Fig.11 to 14) Prior to performing the following procedure, remove the top cover and the front panel assembly. CN101 Disconnect the card wire from connector CN101 on the DVD Servo. DVD Servo Disconnect the harness from connector CN031 on the DVD mechanism assembly.
  • Page 8 XV-521BK/523GD/522SL Removing the AC jack board (See Fig.15 and 16) AC jack board CN951 / CN705 Main board Prior to performing the following procedure, remove the top cover and the front panel assembly. Remove the two screws H attaching the AC jack board.
  • Page 9 XV-521BK/523GD/522SL Removing the main board (See Fig.19 and 20) Main board Prior to performing the following procedure, remove the top cover, the front panel assembly, the DVD mechanism assembly, the AC jack board and the DVD Servo. Remove the three screws J attaching the main board.
  • Page 10 XV-521BK/523GD/522SL <DVD mechanism> Traverse mechanism unit Spring Removing the traverse mechanism unit (See Fig.1 and 2) Remove the screw A and the spring on the upper side of the loading base assembly. Move the rear part of the traverse mechanism unit upward and pull backward to release the two joints a with the base chassis.
  • Page 11 XV-521BK/523GD/522SL Pickup unit Removing the pickup (See Fig.5 to 9) It is not necessary to remove the traverse mechanism unit. Flexible board Solder soldering d on the flexible board next to the pickup unit. From the bottom of the traverse mechanism unit, disconnect the flexible wire from CN10 on the pickup board.
  • Page 12 XV-521BK/523GD/522SL Removing the pickup board (See Fig.5 and 10) Pickup unit It is not necessary to remove the traverse mechanism unit. Flexible board Solder soldering d on the flexible board next to the pickup unit. From the bottom of the traverse mechanism unit, disconnect the flexible wire from CN10 on the pickup board.
  • Page 13 XV-521BK/523GD/522SL Removing the turn table assembly Pickup unit (See Fig.5, 10, 12 and 13) Prior to performing the following procedure, remove Flexible board the traverse mechanism unit. Solder soldering d on the flexible board next to the pickup unit. From the bottom of the traverse mechanism unit, disconnect the flexible wire from CN10 on the pickup board.
  • Page 14 XV-521BK/523GD/522SL Main adjustment Adjustment and confirmation matter (1) Auto adjustment method If microprocessor (IC401, IC402, IC791, IC403) or Pick-up is replaced, initialize the DVD player in the following matter: 1. Initialize the DVD player in the following matter: 1) Make sure that no disc is on the tray.
  • Page 15 XV-521BK/523GD/522SL Flap adjustment method Mode Measurement Disc Adjustment point Reproduction VT-501 FL Display Refer to Fig.2 part CN101 of DVD Servo Control PWB Measurement machine Extension cord No. connections No need Refer to Fig.1 QUQ605-4040AJ General tool : Hex-head wrench(1.27mm) "Flap adjustment"...
  • Page 16 XV-521BK/523GD/522SL Point of adjustment * Please execute the static electricity protection measures before starting the adjustment. * When the following parts are exchanged,optical adjustment "Adjust the flap of Pick-up guide shaft" is necessary. 1.The disc motor was exchanged. 2.The laser pick up was exchanged.
  • Page 17 XV-521BK/523GD/522SL Checkpoints for individual errors (1) Spindle startup error 1. Defective spindle motor * Is the resistance between CN101 "34-35" and "36-37" about 10 to 6 ohms? (Measure it with the power OFF.) * Is the voltage waveform for the hall element CN101"40" square-wave? (During rotation) 2.
  • Page 18 XV-521BK/523GD/522SL (4) Focus ON error 1. Is FE produced? → Pattern, IC101 2. Is FODRV signal produced? (R280) → Pattern, IC201 3. Is drive voltage available? If not available: pattern, driver, or mechanism. (Turn the power OFF then measure the resistance between CN101 "30"...
  • Page 19 XV-521BK/523GD/522SL [During Normal Playback of DVD] (9) No image or sound 1. Search is not possible. a) Can the transistor be switched ON? If not, see "(5) Tracking ON Error" in "Checkpoints for Individual Errors". b) Is the feed operation normal? In case of an error, check "(3) Traverse Movement Error"...
  • Page 20 XV-521BK/523GD/522SL (11) Others (Example of special cases that occurred in the past) 1. Occasionally, the picture becomes a block or stops. 2. The condition along the innermost perimeter is OK. However, at the outermost corner, the picture becomes With these symptoms, it is probably a bad a block or stops frequently.
  • Page 21 XV-521BK/523GD/522SL Troubleshooting Servo volum Press key Is tray See "3. OPEN/CLOSE operation Operations", Troubleshooting. correct? Is the traverse moving See "(3) Traverse Movement Error" along the innermost in "Checkpoints for Individual Errors". perimeter for SW detection? "NO DISC" message appears See "(2) Disk Detection, Determination Error"...
  • Page 22 XV-521BK/523GD/522SL 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 23 XV-521BK/523GD/522SL Description of major ICs AK93C45AF-W (IC791) : CMOS EEPROM 1.Pin Layout AK93C45AF 2.Pin Functions Symbol Function Chip Select Serial Clock Input Serial Data Input Serial Data Output Power Supply Ground Non connection 3.Block Diagram DATA R/W AMPS REGISTER EEPROM...
  • Page 24 XV-521BK/523GD/522SL AK93C65AF-X (IC403) : EEPROM 1.Terminal layout 8 PIN SOP 2.Block diagram DATA REGISTER R/W AMPS AUTO ERASE EEPROM INSTRUCTION REGISTER INSTRUCTION DECODE, CONTROL 4096bit 256 x 16 CLOCK DECODER ADD. GENERATION BUFFERS VPP SW VREF GENERATOR 3.Pin function Pin no.
  • Page 25 XV-521BK/523GD/522SL AN8702FH (IC101) : Front end processor 1.Terminal Layout RFINN PC01 RFINP TESTSG PC02 AGCO TGBAL AGCG TBAL PEAK FBAL BOTTOM AN8702FH POFLT RFENV DTRD IDGT OFTR STANDBY DCRF VCC3 STDI RFOUT RSEL RFDIFO JLINE GND3 2.Pin Functions Pin No.
  • Page 26 XV-521BK/523GD/522SL Pin No. Symbol Function ASOUT Focus error output amplifier reversing input terminal FEOUT Focus error signal output terminal Ground Tangential phase error signal output terminal Apply 3V GND2 Ground VREF2 VREF2 voltage output terminal VCC2 Apply 5V VHALF VHALF voltage output terminal...
  • Page 27 XV-521BK/523GD/522SL HY57V161610DTC8 or KM416S1120DT-G8 (IC504,IC505) : 16MB SDRAM 1.Block diagram Clock Generator Bank B Address Bank A address buffer & Mode Refresh register counter Sense amplifier Column decoder Column & latch circuit address buffer & burst Data counter counter 2.Pin function Pin No.
  • Page 28 XV-521BK/523GD/522SL MC44724AVFU (IC554) : VIDEO ENCODER 1.Terminal layout 2.Block diagrams 64 ~ ChipA Y/G1Vdd Copy, Sync_ generator DVdd CVBS/Cb/B1Vdd protection DVdd C/Cr/R1Vdd CGMS, CCwss gen DVss wss gen Y/G1 Y/G1 DVss CVBS/Cb/B1 off_set DVIN[7:0] CVBS/Cb/B1 DEMAX C/Cr/R1 TP[8:1] C/Cr/R1 TVIN...
  • Page 29 XV-521BK/523GD/522SL MN101C12GHA (IC701) : System micom 1.Terminal layout 100 ~ 76 26 ~ 50 2.Pin function Pin No. Symbol Function Setup bit 0 (Effective with U/E versions) software pull-up? available. Setup bit 1 (Effective with U/E versions) software pull-up? available.
  • Page 30 XV-521BK/523GD/522SL MN101C12GHA (2/2) Pin No. Symbol Function FLDATAI FL Driver Communications DATA 1 FLCK FL Driver Communications CLOCK FLCS FL Driver Communications CS FLRST EEDO EEPROM Communications DATA 0 EEDI EEPROM Communications DATA 1 EECK EEPROM Communications CLOCK EECS EEPROM Communications CS S1 Control S3 Control (STBY:H, P.ON:L)
  • Page 31 XV-521BK/523GD/522SL MN102L25GDZ1 (IC401) : UNIT CPU 1.Terminal layout ADSCIRQ TRVSW ODCIRQ HMFON DECIRQ CD/DVD WAKEUP /ADPD ODCIRQ2 HAGUP ADSEP TXSEL TEST1 TEST2 TEST3 TEST4 MN102L25GDZ1 TEST5 TEST6 TEST7 TEST8 1-31...
  • Page 32 XV-521BK/523GD/522SL 2.Pin function Function Symbol Symbol Function Pin No. Pin No. Micon wait signal input Photo input WAIT FGIN Read enable Serial enable signal for ADSC SPMUTE ADSCEN Write enable Power supply Non connect Serial enable signal for FEP FEPEN...
  • Page 33 XV-521BK/523GD/522SL MN103S13BDA (IC301) : Optical disc controller 1.Terminal layout HDD15 SBCK HDD0 HDD14 HDD1 PVDD HDD13 PVSS HDD2 OSCO1 HDD12 OSCI1 HDD3 LRCK HDD11 BLKCK HDD4 IPFLAG HDD10 DACCLK DACLRCK HDD5 DACDATA HDD9 NTRON MN103S13BDA HDD6 JMPINH HDD8 IDHOLD HDD7...
  • Page 34 XV-521BK/523GD/522SL 3.Pin function Symbol Function Pin NO. HDD15 ATAPI data HDD0 ATAPI data HDD14 ATAPI data Apply 3V HDD1 ATAPI data HDD13 ATAPI data HDD2 ATAPI data HDD12 ATAPI data Apply 2.7V HDD3 ATAPI data HDD11 ATAPI data HDD4 ATAPI data...
  • Page 35 XV-521BK/523GD/522SL Symbol Function Pin NO. CPUADR10 System control address CPUADR9 System control address CPUADR8 System control address CPUADR7 System control address CPUADR6 System control address CPUADR5 System control address CPUADR4 System control address CPUADR3 System control address CPUADR2 System control address...
  • Page 36 XV-521BK/523GD/522SL Symbol Function Pin NO. Land / group switch NTRON Tracking ON DACDATA Sereal output (Connect to TP148) DACLRCK L and R identification output (Connect to TP149) DACCLK Clock for serial output IPFLAG Interpolation flag input BLKCK Sub-code,Block clock input (VSS connected)
  • Page 37 XV-521BK/523GD/522SL Symbol Function Pin NO. NPDIAG ATAPI slave master diagnosis input ATAPI host address (Not use) NIOCS16 ATAPI output of selection of width of host data bus INTRQ ATAPI host interruption output Apply 3V NDMACK ATAPI host DMA response (Not use)
  • Page 38 XV-521BK/523GD/522SL MN67706ZY (IC201) : ADSC 1.Terminal Layout CHCK40 TSTSG DAT3 DAT2 SYSCLK DAT1 OFTR DAT0 33VDD 33VSS 33VSS 33VDD FBAL TBAL XRESET TGBAL AVSS ROUT CPUIRQ LOUT MN67706ZY CPUCLK AVDD CPUDTIN JLINE CPUDTOUT DBALO MONA VCOF MONB TRCRS MONC CMPIN...
  • Page 39 XV-521BK/523GD/522SL Pin No. Symbol Function VFOSHORT VFO short output AVDD Apply 3.3V(For analog circuit) HPFIN Pull-up to VHALF HPFOUT Connect to TP208 AVSS Ground(For analog circuit) LPFIN Pull-up to VHALF LPFOUT Not use CMPIN Connect to TP210 TRCRS Input signal for track cross formation...
  • Page 40 XV-521BK/523GD/522SL Pin No. Symbol Function 33VSS Ground(For I/O) 33VDD Apply 3.3V(For I/O) Digital audio interface XRESET Reset input (System control) Servo DSC serial I/F chip select (System control) CIRC serial I/F chip select (System control) CPUIRQ Interrupt request (System control)
  • Page 41 XV-521BK/523GD/522SL NJM4580D (IC741, IC751) : LPF, Mic and H.phone Amp. 1.Terminal layout A OUT A -IN B OUT A +IN B -IN B +IN (TOP VIEW) 2.Block diagram INPUT OUTPUT IC-PST9140-T (IC702) : Reset IC 1. Block diagram 1-41...
  • Page 42 XV-521BK/523GD/522SL NJM78M05FA (IC953) : Regulator 1. Terminal layout 2. Block diagram 1-42...
  • Page 43 XV-521BK/523GD/522SL STR-G6651 (IC901) : Switch regulator 1-43...
  • Page 44 XV-521BK/523GD/522SL TC74VHC00FT-X (IC503) : Wright timing control TC7WH74FU-X (IC374) : Clock buffer 1.Terminal layout / Block diagram 1.Terminal layout 2.Block diagram TC7SH32FU-X (IC312) : Timing control 1.Terminal layout TC7SH08FU-X (IC311) : Timing control IN B 1.Terminal layout IN A IN B...
  • Page 45 XV-521BK/523GD/522SL ZIVA3-PE0 (IC501) : AV Decoder ZIVA3-PEO (1/5) Function Symbol Pin No. Programmable I/O pins.Input mode after reset. PIO0 8-bit bi-derectional host data bus. writes data to the decoder Code FIFO via HDATA. HDATA0 MSB of the 32-bit word is written first. The host also reads and writes the decoder HDATA1 internal registers and local SDRAM via HDATA.
  • Page 46 XV-521BK/523GD/522SL ZIVA3-PEO (2/5) Function Symbol Pin No. PIO28 PIO29 Programmable I/O pins. Output mode after reset PIO30 VDD-3.3 3.3-V supply voltage for I/O signals. PIO31 Programmable I/O pins. Output mode after reset Ground for core logic and I/O signals. No Connection Programmable I/O pins.
  • Page 47 XV-521BK/523GD/522SL ZIVA3-PEO (3/5) Function Symbol Pin No. MADDR8 Memory address. MADDR10 VDD-3.3 3.3-V supply voltage for I/O signals. MADDR7 Memory address. Ground for core logic and I/O signals. MADDR0 MADDR6 Memory address. MADDR1 VDD-3.3 3.3-V supply voltage for I/O signals.
  • Page 48 XV-521BK/523GD/522SL ZIVA3-PEO (4/5) Function Symbol Pin No. VDD-3.3 3.3-V supply voltage for I/O signals. VDATA4 Video data buses for byte sequential CbYCrY data. The decoder does not run VDATA during the power up procedure. However, during booting the decoder uses operational configuration parameters or 3-state VDATA.
  • Page 49 XV-521BK/523GD/522SL ZIVA3-PEO (5/5) Function Symbol Pin No. DVD-DATA7 DVD parallel compressed data from DVD DSP. When DVD DSP sends 32-bit words, it must write /CDG-SCLK the MSB first. DVD-DATA6 CDG-SDATA:CD+G (Subcode) Data.Indicates serial subcode data input. /CDG-SOS1 CDG-VSFY:CD+G (Subcode)Frame Sync. Indicates frame-start or composite synchronization input.
  • Page 50 XV-521BK/523GD/522SL VICTOR COMPANY OF JAPAN, LIMITED OPTICAL DISC BUSINESS DIV. PERSONAL & MOBILE NETWORK BUSINESS UNIT AV & MULTIMEDIA COMPANY 1644, Shimotsuruma, Yamato, Kanagawa 242-8514, Japan Printed in Japan No.20848 200007 (S)

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