JVC XV-521BK Service Manual Download Page 9

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XV-521BK/523GD/522SL

1-9

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.

Remove the two screws C on the rear panel.

Removing the main board

(See Fig.19 and 20)

Unsolder connector FW841 on the power switch
board on the back of the front panel assembly.

Remove the two screws K attaching the power
switch board.

Push the two tabs g in the direction of the arrow and
remove the power switch board.

Removing the power switch board

(See Fig.21)

Unsolder soldering i on the search switch board.

Remove the three screws M.

Release the four tabs j in the direction of the arrow
and remove the search switch board.

Removing the search switch board

(See Fig.20)

Unsolder connector FW802 and soldering h on the
LCD board.

Remove the four screws L attaching the LCD board.

Removing the LCD board (See Fig.22)

Prior to performing the following procedure, remove
the top cover and the front panel assembly.

<Front panel assembly>

Fig.19

Fig.20

Fig.21

Fig.22

Main board

Rear panel

Power switch board

Front panel assembly

FW841

FW802

Tabs j 4

Tabs g

Front panel assembly

Search switch board

LCD board

Summary of Contents for XV-521BK

Page 1: ...D OPTICAL DISC BUSINESS DIV PERSONAL MOBILE NETWORK BUSINESS UNIT AV MULTIMEDIA COMPANY 1644 Shimotsuruma Yamato Kanagawa 242 8514 Japan DVD PLAYER No 20848 Jul 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN LTD Printed in Japan 200007 S XV 521BK 523GD 522SL B EN EG ES EE U K Northern Europe Germany France Greece Netherlands Switzerland Spain Italy Russian Federation Area Suffix XV 521BK B EN EG ES U...

Page 2: ...akage currnet check Electrical shock hazard testing After re assembling the product always perform an isolation check on the exposed metal parts of the product antenna terminals knobs metal cabinet screw heads headphone jack control shafts etc to be sure the product is safe to operate without danger of electrical shock Do not use a line isolation transformer during this check Plug the AC line cord...

Page 3: ...es 1 Do not touch the area around the laser diode and actuator 2 Do not check the laser diode using a tester as the diode may easily be destroyed 3 It is recommended that you use a grounded soldering iron when shorting or removing the laser diode Recommended soldering iron HAKKO ESD compatible product 4 Solder the land on the optical pickup s flexible cable Note Short the land after shorting the t...

Page 4: ...of the top cover while pulling the lower part of the sides then detach upward 1 2 3 Disassembly method Main body Removing the top cover See Fig 1 Prior to performing the following procedure remove the top cover Remove the seven screws C on the back of the body 1 Removing the rear panel See Fig 2 Fig 1 Fig 2 Top cover Rear panel B C C A 2 A 2 C C ...

Page 5: ... the front Remove the fitting upward from the loading tray at the joints b Push and return the loading tray 1 2 3 4 Removing the fitting See Fig 3 to 6 To remove the front panel assembly and the DVD mechanism assembly remove the fitting in advance ATTENTION Front panel Front panel assembly Loading tray Hole Bottom chassis Bottom Fig 3 Fig 4 Fig 5 Fig 6 Front panel assembly Fitting Joint b Joint b ...

Page 6: ...e joints c on both sides and bottom of the body and remove the front panel assembly toward the front 1 2 3 Removing the front panel assembly See Fig 7 to 10 The connector CN832 on the front panel assembly and CN971 on the AC jack board will be disconnected at the same time ATTENTION Fig 7 Fig 8 Fig 9 Fig 10 Main board D DC mechanism assembly AC jack board Front panel assembly CN703 CN971 Joint c J...

Page 7: ...the lever d in the direction of the arrow and pull out the loading tray Remove the two screws F on the upper side of the DVD mechanism assembly Then release the two joints e and detach the clamper base back upward Remove the three screws G attaching the DVD mechanism assembly 1 2 3 3 4 5 Removing the DVD mechanism assembly See Fig 11 to 14 Fig 11 Fig 12 Fig 13 Fig 14 Loading tray Loading tray CN10...

Page 8: ... jack board See Fig 15 and 16 Prior to performing the following procedure remove the top cover Remove the screw I attaching the DVD Servo Pull out the DVD Servo from the fix f while pinching the fix f Disconnect connector CN501 CN502 and CN503 on the DVD Servo from CN601 CN701 and CN706 on the main board respectively 1 2 3 Removing the DVD Servo See Fig 17 and 18 Fig 15 Fig 16 Fig 17 Fig 18 C I H ...

Page 9: ...er switch board 1 2 3 Removing the power switch board See Fig 21 Unsolder soldering i on the search switch board Remove the three screws M Release the four tabs j in the direction of the arrow and remove the search switch board 1 2 3 Removing the search switch board See Fig 20 Unsolder connector FW802 and soldering h on the LCD board Remove the four screws L attaching the LCD board 1 2 Removing th...

Page 10: ... board from the three tabs b while spreading them outward The loading motor board will be detached with the loading motor Unsolder soldering c on the loading motor board and remove the loading motor 1 2 3 4 5 Removing the loading motor loading motor board See Fig 3 and 4 When reattaching engage the two joints a and make sure the front springs and the four insulators of the traverse mechanism unit ...

Page 11: ...t upward Remove the skew spring at the same time Move the shaft in the direction of the arrow to release it from the part f Release the joint g with the shaft and remove the pickup with the shaft Pull out the shaft Remove the screw D attaching the switch actuator 3 4 5 6 7 Removing the pickup See Fig 5 to 9 Disconnecting the flexible wire without soldering may cause damage to the pickup ATTENTION ...

Page 12: ...edure remove 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 1 2 Unsolder soldering h of the motor harness on the pickup board Remove the two screws F attaching the feed motor assembly and remove the thrust spring Move the feed motor assembly in the...

Page 13: ...m unit Pull the side of the shaft stopper F outward to release the joint l and remove it upward Remove the spring at the same time Remove the screw H attaching the turn table assembly Move the turn table assembly outward and pull out from the shaft Then remove it from the base chassis 3 4 5 6 Removing the turn table assembly See Fig 5 10 12 and 13 Disconnecting the flexible wire without soldering ...

Page 14: ...ncelled when the power is turned off 1 Make sure that no disc is on the tray 2 Insert the power pulag to the outret while pressing PLAY and OPEN CLOSE button at the same time 3 Press the OPEN CLOSE button to move the tray outward Put the Test Disc VT 501 on the tray and press OPEN CLOSE button The tray should move inward Note Don t push to close the tray directly by hand etc 4 Press the PLAY butto...

Page 15: ...nnection PWB Extension Cord connections Refer to Fig 1 Extension cord No General tool Hex head wrench 1 27mm Flap adjustment method DVD Player FL Display Confirmation after adjustment Confirm to reproduce video CD and CD after the DVD test disc is adjusted and to find abnormality 3 About keeping the disc As for the DVD test disc plane accuracy is demanded Please note the keeping place on the disc ...

Page 16: ...anged 2 The laser pick up was exchanged 3 The traverse motor unit was exchanged Note Additionally please adjust the flap of the disc motor when the picture quality deterioration is seen The basic adjustment though is unnecessary for part exchange in the traverse An optical adjustment in the laser pick up cannot be done Please adjust the flap of the disc motor after exchanging the laser pick up Whe...

Page 17: ...during rotation Fluctuates especially during startup If no control available pattern servo IC IC201 4 Is FG input in the servo IC IC271 42 IC271 41 0275 IC201 53 FG FG waveform observation If no FG input pattern IC271 IC201 1 Defective traverse motor Is voltage applied between CN101 38 and 39 2 Defective BTL driver Is voltage applied on IC271 9 and 10 Is MUTE1 terminal 26 of IC271 set to H Is driv...

Page 18: ... it was passed during the adjustment below without going into an abnormal condition 4 Servo IC IC201 When automatic adjustment was unsuccessful due to defective ICs 1 When the spindle servo is not locked successfully RF eye pattern cannot be locked successfully 2 IC101 35 RF OUT IC101 30 RF IC101 31 RF 3 Is the driver spindle signal input not clipped by the output signal 4 Is the transistor ON 5 D...

Page 19: ...e 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 in Checkpoints for Individual Errors or check if there is any point where the feed mechanism is caught Check if the feed operation during playback is smooth If not perhaps the mechanism is caught ...

Page 20: ... the cause So perform readjustment of mechanism tilting During normal CD playback CD DA shows the total time V CD changes to double speed Can it play 1 The OSD screen shows NO READING message 9 As in the case of Search is not possible check the feed and tracking 2 Time display is available but there is no sound Check DAC etc except the Servo 3 Time flow unstable Picture abnormal V CD Measure the j...

Page 21: ... If TE waveform reappears or fails to converge after the TE retraction it is in error Is the spindle servo locked correctly Is the RF OUT waveform locked correctly Two layers of DVD only Is the inter layer jump OK 8 Inter layer jump error Has the disc information been collected Disc change or stop will result 7 Address read error Check 9 10 11 and 12 items in Checkpoints for Individual Errors Is p...

Page 22: ...ock Do not change the setting of these half fixed resistors for laser power adjustment Destruction of Traverse Unit and Laser Pickup by Static Electricity Laser diodes are easily destroyed by static electricity charged on clothing or the human body Before repairing peripheral elements of the traverse unit or pickup be sure to take the following electrostatic protection 1 Wear an antistatic wrist w...

Page 23: ...ion Chip Select Serial Clock Input Serial Data Input Serial Data Output Power Supply Ground Non connection 2 Pin Functions EEPROM 1024bit 64 X 16 R W AMPS AND AUTO ERASE 16 16 DATA REGISTER ADD BUFFERS DECODER VPP SW VPP GENERATOR VREF INSTRUCTION DECODE CONTROL AND CLOCK GENERATION INSTRUCTION REGISTER DI CS SK DO 3 Block Diagram Description of major ICs ...

Page 24: ...DI CS SK PE 1 2 3 4 PE VCC CS SK NC GND DO DI 8 7 6 5 8 PIN SOP Pin no Symbol 1 PE 2 VCC 3 CS 4 SK 5 DI 6 DO 7 GND 8 NC Function Program enable With built in pull up resistor Power supply Chip selection Cereal clock input Cereal data input Cereal data output Ground No connection NOTE The pull up resistor of the PE pin is about 2 5M VCC 5V AK93C65AF X IC403 EEPROM 1 Terminal layout 2 Block diagram ...

Page 25: ... 22 23 24 25 26 27 28 29 30 31 32 AN8702FH IC101 Front end processor 1 Terminal Layout Pin No Symbol I O Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PC1 PC01 PC2 PC02 TGBAL TBAL FBAL POFLT DTRD IDGT STANDBY SEN SCK STDI RSEL JLINE TEN TEOUT Tangential phase balance control terminal Tracking balance control terminal Focus balance control terminal Track detection threshold value level term...

Page 26: ... voltage output terminal Apply 5V VHALF voltage output terminal Ground Apply 5V All addition amplifier capacitor terminal OFTR output terminal RF envelope output terminal Bottom envelope detection filter terminal Peak envelope detection filter terminal AGC amplifier gain control terminal TEST signal input terminal RF signal positive input terminal RF signal negative input terminal Focus input of e...

Page 27: ...CKE CLK UDQM NC VCC DQ8 9 VSS DQ10 11 VDD DQ12 13 VSS DQ14 15 VSS Power supply Data input output Connect to GND Data input output Power supply Data input output Connect to GND Data input output Power supply Lower DQ mask enable Write enable Column address strobe Row address strobe Chip enable Address inputs Address inputs Power supply Connect to GND Address inputs Non connect Clock enable System c...

Page 28: ...B DAC1 Analog brightness signal G drive signal Analog brightness signal G drive signal Power supply for Y G DAC Analog chroma signal Analog chroma signal Power supply for C Cr RDAC Connect to ground for DAC Standard BIAS for DAC1 Standard voltage for DAC1 Power supply for DAC Standard voltage for DAC2 Standard BIAS for DAC2 Non connect Analog composite drive signal Analog composite drive signal Po...

Page 29: ...sed Connect to GND Not used Connect to GND V ENCODER Chip select V ENCODER Reset V ENCODER Communications DATA Communications DATA OUT between the Unit and the Microprocessor Communications DATA IN between the Unit and the Microprocessor Communications CLK between the Unit and the Microprocessor Communications BUSY between the Unit and the Microprocessor Unit microprocessor Reset Communications RE...

Page 30: ...VDD FL Driver Communications DATA 1 FL Driver Communications CLOCK FL Driver Communications CS EEPROM Communications DATA 0 EEPROM Communications DATA 1 EEPROM Communications CLOCK EEPROM Communications CS S1 Control S3 Control STBY H P ON L KARAOKE Gain Control For KARAOKE set H POWER ON OUTPUT AV COMPULINK INPUT AV COMPULINK OUTPUT STANDBY LED OUTPUT DAC Control MA DAC Control MB DAC Control M1M...

Page 31: ...VSS HSSEEK CIRCEN REQ BUSY SLEEP FEPEN WAIT RE SPMUTE WEN CS0 CS1 CS2 CS3 DRVMUTE SPKICK LSTRST WORD A0 A1 A2 A3 VDD SYSCLK VSS XI XO VDD ADSCEN TRS FGIN VDD OSCI OSCO MODE 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 75 74 73 7...

Page 32: ...56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 FGIN TRS ADSCEN VDD FEPEN SLEEP BUSY REQ CIRCEN HSSEEK VSS EPCS EPSK DPDI EPDO VDD SCLKO S2UDT U2SDT CPSCK SDIN SDOUT NMI ADSCIRQ ODCIRQ DECIRQ WAKEUP ODCIRQ2 ADSEP RST VDD TEST1 TEST2 TEST3 TEST4 TEST5 TEST6 TEST7 TEST8 VSS D0 D1 D2 D3 D4 D5 D6 D7 Photo input Ser...

Page 33: ...DR9 CPUADR8 CPUADR7 CPUADR6 CPUADR5 CPUADR4 CPUADR3 CPUADR2 CPUADR1 VSS CPUADR0 NCS NWR NRD VDD CPUDT7 CPUDT6 PVPPDRAM PTESTDRAM PVDDDRAM PVSSDRAM CPUDT5 CPUDT4 CPUDT3 VSS CPUDT2 144 143 142 141 140 139 138 137 136 135 134 133 132 131 130 129 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 109 DMARQ NIOWR VSS NIORD IORDY NDMACK VDD INTRQ NIOCS16 DA1 VSS NPDIAG DA0 DA2 V...

Page 34: ...System control interruption 0 System control interruption 1 System control wait control System control reset Connect to TP302 DASP signal initializing VSS connected Apply 3V OPEN Connect to TP140 OPEN Connect to TP303 VSS connected GND VSS connected VDD 2 7V connected System control address System control address GND System control address System control address System control address System contr...

Page 35: ...ect to TP141 Data part frequency control switch Connect to TP304 Part CAPA switch Connect to TP305 RF dropout BCA data of making to binary Outer side CAPA detection Side of surroundings on inside GND VSS connected System reset Apply 3V 16 9MHz clock Frame mark detection ID gate for tracking holding Connect to TP307 Jump prohibition 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 ...

Page 36: ...utput for serial input Connect to TP306 Sub code Serial input Sub code Frame clock input Read clock to DAT3 0 Output of dividing frequency four from ADSC Read data from DISC Parallel output from ADSC Apply 3V Debugging serial clock Not use 270 pull up Debugging serial data Not use 270 pull up Internal goods title monitor Connect to TP150 TP153 GND Eject detection Apply 2 7V Tray close detection No...

Page 37: ...t of selection of width of host data bus ATAPI host interruption output Apply 3V ATAPI host DMA response Not use ATAPI host ready output Connect to TP157 ATAPI host read Not use GND ATAPI host writes ATAPI host DMA request Connect to TP159 NPDIAG VSS DA1 NIOCS16 INTRQ VDD NDMACK IORDY NIORD VSS NIOWR DMARQ 133 134 135 136 137 138 139 140 141 142 143 144 ...

Page 38: ...63 62 61 60 59 58 57 56 55 54 53 52 51 MN67706ZY MN67706ZY IC201 ADSC 1 Terminal Layout Pin No Symbol I O Function 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 AS AD2 TE AD1 FE AD0 AVDD FODRV DA1 TRDRV DA0 AVSS ARF NARF IREF1 IREF2 DSLF1 DSLF2 AVDD VHALF PLPG PLFG VREFH RVI AVSS PLFLT1 PLFLT2 JITOUT RFDIF CSLFL1 AS Full adder signal FEP Phase difference 3 beam tracking error F...

Page 39: ...onnect to TP204 Analog audio right output Ground For analog circuit Tangential balance adjust FEP Tracking balance adjust FEP Focus balance adjust FEP Ground For I O Apply 3 3V For I O Off track signal 16 9344MHz system clock input ODC Drop out FEP Calibration signal FEP Traverse drive DRVIC Spindle drive output DRVIC FG signal input Spindle motor driver Connect to TP205 Connect to TP206 Connect t...

Page 40: ...ntrol Servo DSC serial I F chip select System control CIRC serial I F chip select System control Interrupt request System control Syscon serial I F clock System control Syscon serial I F data input System control Syscon serial I F data output System control Connect to TP226 Monitor terminal A Connect to TP225 Monitor terminal A Connect to TP224 Monitor terminal A Connect to TP211 Ground For intern...

Page 41: ... INPUT V OUTPUT A OUT A IN A IN V 1 2 3 4 A B TOP VIEW 8 7 6 5 V B IN B IN B OUT 1 Terminal layout 2 Block diagram NJM4580D IC741 IC751 LPF Mic and H phone Amp IC PST9140 T IC702 Reset IC 2 1 CO1 3 OP1 VCC OUT GND 1 Block diagram ...

Page 42: ...XV 521BK 523GD 522SL 1 42 NJM78M05FA IC953 Regulator 1 Terminal layout 2 Block diagram ...

Page 43: ...XV 521BK 523GD 522SL 1 43 D 2 S 5 3 O C P F B GND Comp 2 4 VIN START REG T S D O V P LATCH O S C Vth 2 DRIVE Comp 1 Vth 1 STR G6651 IC901 Switch regulator ...

Page 44: ...ight timing control 1 Terminal layout Block diagram 1 5 4 2 3 VCC OUT Y IN B IN A GND TC7SH08FU X IC311 Timing control 1 Terminal layout 1 2 3 IN B IN A GND VCC OUT Y 5 4 TC7SH32FU X IC312 Timing control 1 Terminal layout 1 Terminal layout 2 Block diagram 1 2 3 4 8 7 6 5 VCC PR CLR Q CK D Q GND TC7WH74FU X IC374 Clock buffer ...

Page 45: ...LOW to indicate host initiated transfer is not complate WAIT is asserted after the falling edge of CS and reasserted when decoder is ready to complate transfer cycle Open drain signal must be pulled up via 1kW to 3 3 volts Driven high for 10 ns before tristate Host interrupt Open drain signal must be pulled up via 4 7kW to 3 3 volts Driven high for 10 ns before tristate 3 3 V supply voltage for I ...

Page 46: ...nals Memory data 3 3 V supply voltage for I O signals Memory data Ground for core logic and I O signals Memory data SDRAM LDQM SDRAM UDQM 3 3 V supply voltage for I O signals SDRAM write enable Decoder asserts active LOW to request a write operation to the SDRAM array Ground for core logic and I O signals SDRAM system clock Active LOW SDRAM column address Active LOW SDRAM row address 3 3 V supply ...

Page 47: ...nals Tie to VSS or VDD 3 3 Ground for core logic and I O signals Tie to VSS or VDD 3 3 Programmable I O pins Input mode after reset Tie to VSS or VDD 3 3 Programmable I O pins Input mode after reset Video data bus Byte serial CbYCrY data synchronous with VCLK At power up the decoder does not drive VDATA During boot up the decoder uses configuration parameters to drive or 3 state VDATA 2 5 V supply...

Page 48: ... PCM data out eight channels Serial audio samples relative to DA BCK clock PCM left right clock Identifies the channel for each audio sample the polarity is programmable PCM bit clock Divided by 8 from DA XCK can be either 48 or 32 times the sampling clock 2 5 V supply voltage for core logic Audio master frequency clock Used to generate DA BCK and DA LRCK DA XCK can be eigher 384 or 256 times the ...

Page 49: ...r has available space Polarity is programmable Video strobe Programmable dual mode pulse Asynchronous and synchronous In Asynchronous mode an external source pulses VSTROBE to indicate data is ready for transfer In synchronous mode VSTROBE clock data 3 3 V supply voltage for I O signals No Connection Ground for core logic and I O signals In synchronous mode Video data acknowledge Asserted when DVD...

Page 50: ...D OPTICAL DISC BUSINESS DIV PERSONAL MOBILE NETWORK BUSINESS UNIT AV MULTIMEDIA COMPANY 1644 Shimotsuruma Yamato Kanagawa 242 8514 Japan DVD PLAYER No 20848 Jul 2000 COPYRIGHT 2000 VICTOR COMPANY OF JAPAN LTD Printed in Japan 200007 S XV 521BK 523GD 522SL B EN EG ES EE U K Northern Europe Germany France Greece Netherlands Switzerland Spain Italy Russian Federation Area Suffix XV 521BK B EN EG ES U...

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