JVC XV-N40BK Service Manual Download Page 8

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XV-N40BK,XV-N44SL

1-8 (No.A0040)

2.1.3 Removing the mechanism assembly (See Figure 2, Figure 5)

• Prior to performing the following procedure, remove the top

cover.

• There is no need to remove the front panel assembly.

(1) Insert a kind of screwdriver in a hole located in the right

side of mechanism assembly, and push a lever until it can-
not be inserted any further.

(2) And then, a tray will come out. Remove the tray in an upper

direction, with slightly opening the lower part of fitting in an
outward direction.

(3) Remove the three screws

attaching the mechanism as-

sembly.

(4) Disconnect the wire from connector CN501,CN502,CN503

on the servo control board respectively.

(5) Remove the mechanism assembly by lifting the rear part of

the mechanism assembly.

Fig.5

2.1.4 Removing the servo control board (See Figure 6)

• Prior to performing the following procedure, remove the mech-

anism assembly.

(1) Remove the three screws

attaching the servo control

board.

(2) Disconnect the card wire from connector CN201,CN202 on

the servo control board.

(3) Disconnect the flexible wire from connector CN101 on the

servo control board from pick-up unit.

ATTENTION:

At this time, please extract the wire after short-circuited
of two places on the wire in part

with solder. Please re-

move the solder two places of part

after connecting the

wire with CN101 when reassembling.

Fig.6

Mechanism assembly

CN501

CN502

CN503

CN201

Part c

CN202

CN101

Servo control board

Summary of Contents for XV-N40BK

Page 1: ...isassembly method 1 7 3 Adjustment 1 14 4 Description of major ICs 1 23 Area Suffix XV N40BK J U S A C Canada Area Suffix XV N44SL J U S A C Canada UJ U S A Militaly 2 5 8 1 4 7 3 6 9 0 10 10 CANCEL TITLE GROUP RETURN VFP PROGRESSIVE SCAN REPEAT ZOOM DIMMER AUDIO 3D PHONIC SUBTITLE ANGLE OPEN CLOSE DISPLAY NEXT PREVIOUS SELECT CLEAR SLOW SLOW T OP MENU MENU ON SCREE N CHOICE ENTER STANDBY ON V I D...

Page 2: ...UT pin jack 1 0 Vp p 75 ohm S VIDEO OUT S jack Y Output 1 0 Vp p 75 ohm C Output 286 mVp p 75 ohm Horizontal resolution 500 lines or more ANALOG OUT pin jack 2 0 Vrms 10 kohm DIGITAL OUT COAXIAL 0 5 Vp p 75 ohm termination DIGITAL OUT OPTICAL 21 dBm to 15 dBm peak Frequency response CD sampling frequency 44 1 kHz 2 Hz to 20 kHz DVD sampling frequency 48 kHz 2 Hz to 22 kHz 4 Hz to 20 kHz for DTS an...

Page 3: ...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 directly into the AC outlet Using a Leakage Current Tester measure the leakage current from each exposed metal parts of ...

Page 4: ...ptical pickup In order to maintain quality during transport and before installation both sides of the laser diode on the replacement optical pickup are shorted After replacement return the shorted parts to their original condition Refer to the text Do not use a tester to check the condition of the laser diode in the optical pickup The tester s internal power source can easily destroy the laser dio...

Page 5: ... B39 B36 B142 B143 B40 B133 B134 B132 B202 B231 B233 B105 B41 B201 B103 B101 B171 B44 D955 B303 B135 CN902 B273 B631 B37 L953 R966 R951 R915 C808 C802 B2 B237 Q951 B203 B102 C958 D957 D954 D952 D951 D903 D902 B347 EP952 C963 C964 B107 B205 EP953 R969 Full Fuse Replacement Marking Graphic symbol mark This symbol means fast blow type fuse should be read as follows FUSE CAUTION FOR CONTINUED PROTECTI...

Page 6: ...match the characteristics of the optical block Do not change the setting of these half fixed resistors for laser power adjustment 1 8 2 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 elec...

Page 7: ...cedure remove the top cover There is no need to remove the mechanism assembly 1 Insert a kind of screwdriver in a hole located in the right side of mechanism assembly and push a lever until it can not be inserted any further 2 And then a tray will come out Remove the tray in an upper direction with slightly opening the lower part of fitting in an outward direction 3 Disconnect the card wire from c...

Page 8: ... on the servo control board respectively 5 Remove the mechanism assembly by lifting the rear part of the mechanism assembly Fig 5 2 1 4 Removing the servo control board See Figure 6 Prior to performing the following procedure remove the mech anism assembly 1 Remove the three screws D attaching the servo control board 2 Disconnect the card wire from connector CN201 CN202 on the servo control board ...

Page 9: ...ut terminal board and power supply board See Figure 8 Prior to performing the following procedure remove the top cover mechanism assembly rear panel 1 Remove the two screws G attaching the output terminal board 2 Disconnect the card wire from connector CN702 on the output terminal board 3 Remove the three screws H attaching the power supply board 4 Disconnect the card wire from connector CN901 on ...

Page 10: ...f the tray is removed from b of the loading base Then remove the tray upward See Figure 4 Attaching the tray Engage c of the loading base to the projection of the tray while tilting the tray to the left Turn the tray in a direction of the ar row and attach the slide bracket See Figure 5 Note Prior to the procedure above move the slide cam in a direction of the arrow so that d of the slide cam can ...

Page 11: ...Figure 9 Prior to the following procedure remove the traverse mecha nism assembly 1 Remove the two arms of the elevator from the two parts f by moving the arms in a direction of the arrow 2 Pull out the elevator in a rear direction Attaching the elevator Engage the two holes g to the two shafts on the front part of the elevator And then attach the elevator Fig 8 Fig 9 Loading mechanism assembly B ...

Page 12: ... following procedure remove the tray the traverse mechanism assembly and the elevator 1 Remove the belt from the pulley 2 Remove two screws C attaching the loading motor 3 Remove two solders h on the switch board Fig 10 Fig 11 Loading base Slide cam Belt Pulley Pulley C C Loading motor Switch board Part h ...

Page 13: ...3 Lift i of the shaft 1 and pull out the shaft 1 from j 4 Remove k of the pickup from the shaft 2 Attaching the pickup 1 Engage k of the pickup to the shaft 2 Note As Figure 14 shows the spring must come under the shaft 2 2 Insert the shaft 1 in j and attach the shaft 1 to i 3 Attach the leaf spring and then attach the plate Fix the leaf spring and the plate by using the screw D Fig 12 Fig 13 Fig ...

Page 14: ... in the following case Just after you upgrade the firmware After you confirm the symptoms that a customer points out First Initialize and then confirm whether the symptoms are improved or not After servicing before returning the main body to a customer Initialized main body should be returned to a customer 1 Set the main body at test mode 2 Press PAUSE key of the main body 3 When initialization is...

Page 15: ... Insert the test disc VT 501 or commercial dual layer DVD software 3 Remove the disc when the FL display changes from READ to disc information 4 Perform the same procedures as in 2 and 3 above by using the test disc CTS 1000 or commercial CD DA software 5 Set the main body at test mode and check that the FL display shows 0 NOTE Status of this adjustment can be judged by the number displayed at tes...

Page 16: ...E key of the remote controller three times Then FL display is displayed CK 3 Insert the test disk VT 501 and press PLAY key of the main body 4 After a few seconds press 6 of the remote controller Then the jitter value is displayed on the LCD display as follows 3 8 Flap adjustment of the pick up guide shaft Please perform flap adjustment of the pick up guide shaft in the following case Just after y...

Page 17: ...n returns to the normal screen Then press POWER key of the main body When the stand by indicator is lighted upgrading is completed 7 Set the main body at test mode and perform initialization Then confirm the version of the firmware When up grade is completed Upgrade application initializing While upgrading blue screen After inserting the up grade disc Firmware upgrade Disc press UP NO DISC 2 5 8 1...

Page 18: ...e wire this time in the con nector without fail The procedure might be mistaken and if solder has not surely adhered to two places on a flexible wire short land part a the laser diode in the pick up be destroyed again 5 The pick up is installed in the traverse mechanism 6 A flexible wire is connected with connector CN101 on the servo control board by installing the traverse mechanism in the loadin...

Page 19: ...must be displayed correctly FL Display should light correctly without any unevenness All Function button All function buttons should worked correctly with moderate click feeling Open and close movement of tray When press OPEN CLOSE button the tray should move smoothly without any noise Remote controller unit working Check the correctly operation in use of remote controller unit Reading of TOC Be n...

Page 20: ...te continues for several seconds and becomes NO DISC or an error display afterwards The rotation of DISC becomes high speed and abnormal and becomes NO DISC or an error display afterwards Is focus retraction OK Even when it retracts correctly if it is out of focus and makes repeated retries with a clicking sound it is in error Is tracking retraction OK If TE waveform reappears or fails to converge...

Page 21: ... rotation of the motor 3 13 2 Disc Detection Distinction error no disc no RFENV Laser is defective Front End Processor is defective IC101 APC circuit is defective Q101 Q102 Pattern is defective Lines for CN101 All patterns which relate to pick up and patterns between IC101 IC101 For signal from IC101 to IC301 is signal output from IC101 21 ASOUT and IC101 36 RFENV and IC101 20 FEOUT 3 13 3 Travers...

Page 22: ...ormal To 3 traverse movement NG in Check points for each error when it is not normal Are not there caught of the feeding mechanism etc 3 13 10 Picture is distorted or abnormal sound occurs at intervals of several seconds Is the feed operation normal Are not there caught of the feeding mechanism etc 3 13 11 Others The image is sometimes blocked and the image stops The image is blocked when going to...

Page 23: ... of latch enable Block diagram Symbol Description D0 D7 Data inputs LE Latch enable input OE Output enable input Q0 Q7 3 State latch outputs 1 OE 2 Q0 3 D0 4 D1 5 Q1 6 Q2 7 20 19 18 17 16 15 14 D2 VCC Q7 D7 D6 Q6 Q5 D5 TOP VIEW 8 D3 9 Q3 10 GND 13 12 11 D4 Q4 LE INPUTS OUTPUT LE OE Dn Qn X H X Z H L L L H L H H L L X Q0 Q L D D0 3 2 Q0 11 1 LE OE Q L D D1 4 5 Q1 Q L D D2 7 6 Q2 Q L D D3 8 9 Q3 Q L...

Page 24: ...N I Chip select 7 CCLK I Control data input terminal 8 CDTI I Control data input terminal 9 AOUTR O Rch negative analog output terminal 10 AOUTR O Rch positive analog output terminal 11 AOUTL O Lch negative analog output terminal 12 AOUTL O Lch positive analog output terminal 13 VSS Connect to ground 14 VDD Power supply terminal 15 DZFR O Rch data zero input detection terminal 16 DZFL O Lch data z...

Page 25: ...gnal output terminal 21 FS O Focus addition signal output terminal 22 VHALF O VHALF Voltage output terminal 23 MIRSL O MIRROR Slow envelope detection terminal 24 BDOSL O BDO Slow envelope detection terminal 25 VCC2 Power supply terminal 2 3 3V 26 FLTOP O Filter amplifier positive output terminal 27 FLTON O Filter amplifier negative output terminal 28 SAG O SAG Cancel detention terminal 29 DCAGC O ...

Page 26: ...O Output for CH2 OP AMP 8 GND Substrate ground 9 STBY1 I Input for CH1 2 3 stand by control 10 PowVcc1 Vcc for CH1 2 power block 11 VO2 O Inverted output of CH2 12 VO2 O Non inverted output of CH2 13 VO1 O Inverted output of CH1 14 VO1 O Non inverted output of CH1 15 VO4 O Non inverted output of CH4 16 VO4 O Inverted output of CH4 17 VO3 O Non inverted output of CH3 18 VO3 O Inverted output of CH3...

Page 27: ...B CNF BR VH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 29 30 28 27 26 25 24 23 22 21 20 19 18 17 16 15 BRAKE MODE Hall Bias SHORT BRAKE VH BR CNF SB FG2 FR VCC VCC R D Q CK Q ECR EC PS FG VCC VCC GSW VM RNF GAIN SWITCH 2 4 7 8 9 10 11 12 13 14 H1 H1 H2 H2 H3 H3 TSD PS TOROUE SENSE AMP GAIN CONTROL DRIVER HALL AMP TL A3 A2 A1 GND CURRENT SENSE AMP ...

Page 28: ...put AMP 2 13 H3 I Positive input for hall input AMP 3 14 H3 I Negative input for hall input AMP 3 15 VH I Hall bias terminal 16 BR Non connect 17 CNF Capacitor connection pin for phase compensation 18 SB I Short brake terminal 19 FG2 Non connect 20 FR Non connect 21 ECR I Torque control standard voltage input terminal 22 EC I Torque control voltage input terminal 23 PS O Start stop switch power sa...

Page 29: ...12 13 MA9 8 O SDRAM Address bus terminal 14 VSSio Connect to ground 15 16 MA7 6 O SDRAM Address bus terminal 17 VSS Connect to ground 18 MA5 O SDRAM Address bus terminal 19 VDDio Power supply terminal 3 3V 20 21 MA4 3 O SDRAM Address bus terminal 22 MCLK O SDRAM Clock output 23 VSSio Connect to ground 24 CKE O SDRAM Clock enable output Audio output processor Audio DSP MPEG Video decoder Video outp...

Page 30: ...26 29 I O SDRAM Data bus terminal 62 VDDio Power supply terminal 3 3V 63 64 MD30 31 I O SDRAM Data bus terminal 65 DQM3 O SDRAM Data byte enable 66 CS1 O SDRAM Extension bank chip select 67 VSSD Connect to ground 68 SPDIF O S PDIF Digital audio output terminal 69 VSSio Connect to ground 70 ADC I Digital audio input for digital micro can be used as GPIO 71 AOUT3 O Serial audio output data to audio ...

Page 31: ...cillator 1 8V 102 MVCKVDD Power supply terminal for main and video clock PLL 3 3V 103 SCEN I Scan chain test enable 104 MVCKVSS Connect to ground for main and video clock PLL 105 ACLKVSS Connect to ground for audio clock PLL 106 SCMD I Scan chain test mode 107 ACLKVDD Power supply terminal for audio clock PLL 3 3V 108 VDDDAK Power supply terminal for DAC digital 1 8V 109 VSSDAC Connect to ground f...

Page 32: ...CK RDY control 162 VSSio Connect to ground 163 168 AD13 8 I O Multiplexed address data bus terminal 169 VDDio Power supply terminal 3 3V 170 PWE1 I O Byte write enable for FLASH EEPROM SRAM or peripherals terminal 171 VSS Connect to ground 172 176 AD7 3 I O Multiplexed address data bus terminal 177 VSSio Connect to ground 178 180 AD2 0 I O Multiplexed address data bus terminal 181 VDDio Power supp...

Page 33: ...mpling clock 216 DSTB I Parallel mode data valid serial mode left right clock 217 DVD0 I DVD Drive parallel data port 218 VSSio Connect to ground 219 223 DVD1 5 I DVD Drive parallel data port 224 VDDio Power supply terminal 3 3V 225226 DVD6 7 I DVD Drive parallel data port 227 MD0 I O SDRAM Data bus terminal 228 VSSio Connect to ground 229 MD1 I O SDRAM Data bus terminal 230 VSS Connect to ground ...

Page 34: ...se A19 A11 address lines will select the sector During block erase A19 A15 address lines will select the block DQ15 DQ0 Data Input Output To output data during read cycles and receive input data during write cycles Data is inter nally latched during a write cycle The outputs are in tri state when OE or CE is high CE Chip Enable To activate the device when CE is low OE Output Enable To gate the dat...

Page 35: ...l value of DASP signal 9 17 CPUADR17 9 I System control address 18 VDD18 Power supply terminal for I O 1 8V 19 VSS Connect to ground 20 DRAMVDD18 Power supply terminal for DRAM 1 8V 21 DRAMVSS Connect to ground for DRAM 22 30 CPUADR8 0 I System control address 31 VDD3 Power supply terminal for I O 3 3V 32 VSS Connect to ground 33 DRAMVDD3 Power supply terminal for DRAM 3 3V DVD ROM Formatter CGEN ...

Page 36: ... terminal for DRAM 1 8V 59 DRAMVSS Connect to ground for DRAM 60 VSS Connect to ground 61 WOBBLEFIL Non connect 62 PWM6 O Connect to pick up unit 63 PWM7 O Short brake terminal 64 PWM8 Non connect 65 TBAL O Tracking balance adjustment output 66 FBAL O Focus balance adjustment output 67 TRSDRV O Traverse drive output 68 SPDRV O Spindle drive output 69 FG I Motor FG input 70 TILTP Non connect 71 TIL...

Page 37: ... 107 108 DSLF2 1 I Connect to capacitor 2 1 for DSL 109 AVDD Power supply terminal for analog circuit 3 3V 110 NARF I Equivalence RF 111 ARF I Equivalence RF 112 JITOUT O Output for jitter signal monitor 113 AVSS Connect to ground for analog circuit 114 DAC0 O Tracking drive output 115 DAC1 O Focus drive output 116 AVDD Power supply terminal for analog circuit 3 3V 117 AD0 I Focus error input 118 ...

Page 38: ...14 152 VDD18 Power supply terminal for I O 1 8V 153 PO I Connect to ground 154 UATASEL I Connect to ground 155 VSS Connect to ground 156 VDD3 Power supply terminal for I O 3 3V 157 HDD1 I O ATAPI host data 1 158 HDD13 I O ATAPI host data 13 159 HDD2 I O ATAPI host data 2 160 HDD12 I O ATAPI host data 12 161 HDD3 I O ATAPI host data 3 162 VDD3 Power supply terminal for I O 3 3V 163 VSS Connect to g...

Page 39: ...iption 1 CLK I Clock input terminal 2 STB I Serial interface strobe terminal 3 4 K1 K2 I Key data input terminal 5 VSS Connect to ground 6 VDD Power supply terminal 7 14 SG1 SG8 O FL Display segment control signal output terminal 15 VEE Pull down level 16 SG9 O FL Display segment control signal output terminal 17 23 GR7 GR1 O FL Display grid control signal output terminal 24 VDD Power supply termi...

Page 40: ... AVCI I AV Compulink control data input 12 REMO I Remote control signal input 13 SWCLOSE I Tray switch signal input 1 L Full open L Movement H Full close 14 SWOPEN I Tray switch signal input 2 L Full open H Movement H Full close 15 RXD I Decoder serial communication data input 16 TXD O Decoder serial communication data output 17 INTP O Decoder serial communication interruption signal output 18 FLS...

Page 41: ...XV N40BK XV N44SL No A0040 1 41 ...

Page 42: ... No A0040 AV MULTIMEDIA COMPANY OPTICAL DISC CATEGORY 1644 Shimotsuruma Yamato Kanagawa 242 8514 Japan VICTOR COMPANY OF JAPAN LIMITED 200303WPC Printed in Japan XV N40BK XV N44SL ...

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