JVC XVN210, XVN212, XVN310, XVN312 Schematic

SERVICE MANUAL

DVD VIDEO PLAYER

XA01620043

XV-N210B, XV-N212S,

XV-N310B, XV-N312S

Area Suffix

DSPL Y DIMMER

SOUND

/GROUP RETURN

ANGLE

SUB TITLE AUDO ZOOM

S I CT

TOP MENU

SET UP

PREVOUS SE ECT

TITLE

CLEAR

S ANDBY/ON

CANCEL

213

546

879

010 +10

THUMBNAL / IST

ENTER

EEN

Except J/C of XV-N210B,XV-N212S

VIDEO

J -------------------------- U.S.A. C --------------------- Canada

This illustration is XV-N210B for U.S.A.

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

No.XA016

2004/3

SPECIFICATION

(For version J of XV-N310B.)

General

Readable discs DVD VIDEO, DVD-R (Video format), DVD-RW (Video format),SVCD, Video CD, Audio CD (CD-DA),

JPEG, CD-R/RW(CD-DA, SVCD, Video CD, MP3 format, JPEG,MPEG-4)

Video format NTSC, 480i (Interlaced scan)/480p (Progressive scan) selectable

Other

Power requirements AC 120 V~, 60 Hz Power consumption 10.0 W (POWER ON), 2.0 W (STANDBY mode) Mass 1.6 k g (3.6 lbs) Dimensions (W × H × D) 435mm × 44mm × 201mm (17-3/16 inch × 1-3/4 inc × 7-15/16 inch)

Video outputs

COMPONENT (pin jacks) Y Output: 1.0 Vp-p (75 Ω)

Pb/Pr Output: 0.7Vp-p (75 Ω) VIDEO OUT (pin jack) 1.0 Vp-p (75 Ω) S-VIDEO OUT (S jack) Y Output: 1.0 Vp-p (75 Ω)

C Output: 286 mVp-p (75 Ω) Horizontal resolution 500 lines or more

Audio outputs

ANALOG OUT (pin jack) 2.0 Vrms (10 kΩ) DIGITAL OUT (COAXIAL) 0.5 Vp-p (75 Ω termination)

Audio characteristics

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 and Dolby Digital bitstream signals)

DVD (sampling frequency 96 kHz):2 Hz to 44 kHz Dynamic range 16 bit: More than 98 dB

20 bit/24 bit: More than 100 dB Wow and flutter Unmeasurable (less than +- 0.002%) Total harmonic distortion less than 0.009%

*Notes for PX model (Check the specification indication on the rear panel.)

Power requirements AC 110 V to 240 V~, 50 Hz/60 Hz Power consumption 11.0 W (POWER ON), 2.0 W (STANDBY mode)

• Specifications and appearance are subject to change without prior notice.

• Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarkes of Dolby Laboratories.

• "DTS" and "DTS 2.0+Digital Out" are trademarks of Digital Theater Systems, Inc.

• USE OF THIS PRODUCT IN ANY MANNER THAT COMPLIES WITH THE MPEG-4 VISUAL STANDARD IS PROHIBITED, EXCEPT FOR USE BY A CONSUMER ENGAGING IN PERSONAL AND NON-COMMERCIAL ACTIVITIES.

• This product incorporates copyright protection technology that is protected by meth od claims of certai n U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rig hts owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for home and other limited viewing uses only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited.

1-2 (No.XA016)

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of th is product contains special hardw are 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.

(2) Alterations of the design or circuitry of the product should

not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.

(4) The leads in the products are routed and dressed with ties,

clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassembling.

(5) Leakage shock hazard testing)

After reassembling 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 directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).

• Alternate check method Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 ohm 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return

path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal resp onsibility of the repairer to ensure that

these safety standards are maintained.

(3) Repairs must be made in accordance with the relevant

safety standards.

(4) It is essential that safety critical compone nts are replaced

by approved parts.

(5) If mains voltage selector is provided, check setting for local

voltage.

1.3 Caution 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.

1.4 Critical parts for safety

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. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (Except the JC version)

(No.XA016)1-3

1.5 Pre venting 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.

1.5.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser dio de) in devices such as DVD players. Be careful to use proper grounding in the area where repairs are being performed.

(1) Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sh eet) or an iron plate over it before placing the traverse unit (optical pickup) on it.

(2) Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(3) Handling the optical pickup

• In order to maintain quality during transport and before instal lation, both sides of the laser di ode on the replacement optica l 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 diode.

1.6 Handling the traverse unit (optical pickup)

(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit. (2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the

replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long

a time when attaching it to the connector. (3) Handle the flexible cable carefully as it may break when subjected to strong force. (4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.7 Precautions of the safe use of battery (Only ver. J, C)

• Store the battery in a place where children cannot reach.If a child accidentally swallows the battery, consult a doctorimmediately.

• Do not recharge, short, disassemble or heat the battery or dispose of it in a fire. Doing any of these things may cause the battery to give off heat, crack, or start a fire.

• Do not leave the battery with other metallic materials.Doing this may cause the battery to give off heat, crack, or start a fire.

• When throwing away or saving the battery, wrap it in tape a nd insul ate; otherwise, the ba ttery ma y start to give off heat, crack, or start a fire.

• Do not poke the battery with tweezers or similar tools.Doing this may cause the battery to give off heat, crack, or start a fire.

• Dispose of batteries in the proper manner, according to federal, state, and local regulations.

1-4 (No.XA016)

1.8 Important for laser products

(1) CLASS 1 LASER PRODUCT (2) DANGER : Invisible laser radia tion when open and inter

lock failed or defeated. Avoid direct exposure to beam.

(3) CAUTION : There are no serviceable parts inside the

Laser Unit. Do not disassemble the Laser Unit. Replace the complete Laser Unit if it malfunctions.

(4) CAUTION : The compact disc player uses invisible laser

radiation and is equipped with safety switches which prevent emission of radiation when the drawer is open and the safety interlocks have failed or are de feated. It is dangerous to defeat the safety switches.

VARNING

Osynlig laserstrålning är denna del är öppnad och spårren är urkopplad. Betrakta ej strålen.

VARO

Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle. Älä katso säteeseen.

ADVARSEL

Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion. Undgå udsasttelse for stråling.

ADVARSEL

Usynlig laserstråling ved åpning, når sikkerhetsbryteren er avslott. unngå utsettelse for stråling.

REPRODUCTION AND POSITION OF LABEL and PRINT

WARNING LABEL and PRINT

(5) CAUTION : If safety switches malfunction, the laser is able

to function.

(6) CAUTION : Use of controls, adjustments or performance of

procedures other than those specified herein may result in hazardous radiation exposure.

CAUTION Please use enough caution not to see the beam directly or touch it in case of anadjustment or operation check.

The inside of a chassis

(No.XA016)1-5

1.9 Precautions for Service

1.9.1 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 an d therefore must not be subjected to strong shock. (3) Do not use a tester to examine the laser diode. (The diode can easily be destroyed by the internal power supply of the tester.) (4) To replace the traverse unit, pull out the metal short pin for protection from charging. (5) When replacing the pickup, after mounting a new pickup, remove the solder on the short land which is provided at the center of

the flexible wire to open the circuit.

(6) Half-fixed resistors for laser power adjustment are adjusted in pairs at shipment to match the characteristics of the optical block.

Do not change the setting of these half-fixed resistors for laser power adjustment.

1.9.2 Destruction of Traverse Unit and Laser Pickup by Static Electricity

Laser diodes are easily destroyed by static electricity charged on clothingor 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 wrap. (2) With a conductive sheet or a steel plate on the workbench on which the traverse unit or the pick up is to be repaired, ground the

sheet or the plate. (3) It solders to two short circuit sections on the substrate of a pick-up. (4) After removing the flexible wire from the connector (CN101

), short-circuit the flexible wire by the metal clip.

(5) Short-circuit the laser diode by soldering the land which is provided at the center of the flexible wire for the pickup.

After completing the repair, remove the solder to open the circuit.

Pick-upGear1

Short circuit

*Please refer to the disassembly method for details.

CN101

Main board

1-6 (No.XA016)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.XA016)1-7

SECTION 3

TOP COVER

Push

DISASSEMBLY

There is a part different from the photograph according to the model and the destination though explains this disassembly method by using XV-N310B for U.S.A.

3.1 Main b od y section

3.1.1 Removing the top cover (See Figure 1)

(1) Remove the two screws A attach ing the top cover on both

sides of the main body.

TOP COVER

Fig.1

Fig.3

Hook b

CN502

Main board

Hook a

(2) Remove the three screws B attaching the top cover on the

back of the main body. (3) Raise the both sides and lower part of the rea r of the top

cover, with opening them slightly in an outward direction.

And the top cover will be removed.

3.1.2 Removing the front panel assembly (See Figure 2, Figure 3, Figure 4)

• Prior to performing the following procedure, 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 cannot 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 connector CN502

main board.

(4) Hook a and b are removed respectively, and the front panel

assembly is removed.

Front panel assembly

Mechanism assembly

Tr ay

Fitting

on the

A x 2

Front panel assembly

1-8 (No.XA016)

Push

Hole and lever

Fig.2

Front panel assembly

Hook a

Hook b

Fig.4

3.1.3 Removing the mechanism assembly (See Figure 2, Figure 5, Figure 6)

• Prior to performing the following procedure, re move 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 righ t

side of mechanism assembly, and push a lever until it cannot 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 C attachin g the mechanism as-

sembly. (4) A tray is made to slide ahead. (5) A gear 1 is turned counterclockwise. The n, a pick-up unit

moves back.

Mechanism assembly

(6) It solders to two c sections on the pick-up unit. (7) Disconnect the card wire from connector CN201

on the main board.

CN101

, CN202,

ATTENTION:

Please extract the wire afte r short-circuited of two places on the wire in part c with solder. Please remove the solder two places of part c after connecting the wire with

when reassembling.

CN101

CAUTION:

Be sure to solder the short land sections “c” on the pickup unit before disconnecting the card wire from connector CN101

on the main board. If the card wire is disconnected without attaching solder, the pick-up unit may be destroyed by static electricity.

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

the mechanism assembly.

CN202

CN101

Main board

CN201

Fig.5

Part c Pick-upGear1

Fig.6

(No.XA016)1-9

3.1.4 Removing the rear panel (See Figure 7 )

• Prior to performing the following procedure, remove the top cover. (1) Remove the seven screws D attaching the rear panel. (2) Disconnect the power cord from connector CN1 on the

power supply board

Power supply board

3.1.5 Removing the main board and power supply board. (See Figure 8)

• Prior to performing the following procedure, remove the top cover/front panel assembly/rear panel. (1) Remove the two screws E attaching the main board. (2) Disconnect the card wire from connector CN201

on the main board.

CN101

(3) Disconnect the flat wire from co nne ctor CN2

supply board.

(4) Remove the four screws F attaching the power supply

board.

, CN202,

on the power

Power supply board

CN1 Rear panel D

Fig.7

CN202

Fig.8

CN201CN2

CN101

Main board

1-10 (No.XA016)

3.2 Load in g mec han ism assembly

r tra

3.2.1 Removing the tray (See Figure 1, Figure 2, Figure 3, Figure 4, Figure 5, Figure 6)

(1) Push a of the slide cam on the hole in the rig ht side of the

loading base by using a driver until it stops. (See Figure 1.)

(2) The tray comes out. Pull the tray in a front direction u ntil it

stops.

(3) Remove the two screws A attaching the slide bracket. (See

Figure 2.)

(4) Tilt the tray in a direction of the arrow around the point in

the left rear part of the tray. (See Figure 3.)

(5) The rail of the tray is remove d from b o f the loadi ng base.

Then, remove the tray upward. (See Figu r e 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 di rection of th e arrow, 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 be inserted in e of the tray. (See Figure 6.)

Tray

The point in the left rear part

Tray

Fig.3

Push

Slide cam part a

Slide bracket

Fig.1

Fig.2

Loading base

Tray

Loading base part b

Rail of the tray

Fig.4

Projection of the tray

Loading base part c

Fig.5

Par t e

Par t d

Slide cam

Fig.6

(No.XA016)1-11

3.2.2 Removing the traverse mechanism assembly (See Figure 7)

Shaft

(1) Reverse the loading mechanism assembly. (2) A card wire is removed from a wire bracket. (3) Remove the four screws B attaching the traverse mecha-

nism assembly. Remove the traverse mechanism assembly upward.

Wire bracket

Loading mechanism

assembly

3.2.3 Removing the elevator (See Figure 8 and Figure 9)

• Prior to the following procedure, remove the traverse mechanism 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.

Par t f

Elevator

Traverse mechanism

Fig.7

Fig.8

assembly

Elevator

Slide cam

Par t f

1-12 (No.XA016)

Shaft

Fig.9

3.2.4 Removing the loading motor (See Figure 10 and Figure 11)

• Prior to the 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.

Switch board

Pulley

Part

Pulley

㧯

Loading base

Slide cam

Belt

㧯

Fig.10

Loading motor

Fig.11

(No.XA016)1-13

3.3 Traverse mechanism assembly

3.3.1 Removing the pickup (See Figure 12, Figure 13)

• Prior to the following procedure, remove the traverse mechanism assembly. (1) Remove one screw D attaching the plate. (2) Remove the plate and the leaf spring. (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. (2) Insert the shaft 1 in j, and attach the shaft 1 to i. (3) Attach the leaf spring, and then a ttach the p late. Fix the

leaf spring and the plate by using the screw D.

Leaf spring

Plate

Fig.12

Part j

Shaft 2

Part k

Shaft 1

Part i

Fig.13

1-14 (No.XA016)

SECTION 4

ADJUSTMENT

4.1 Test mode setting method

(1) Unplug the power plug. (2) Insert power plug into outlet while pressing both "PLAY" key and "STOP" key of the main body. (3) The FL display shows "N300J", and the main body turns to test mode.

*The portion of "N300J" changes with a model and destinations.

(4) To release test mode, press "POWER" key of the main body.

NOTE:

Each pressing of "SET UP" key of the remote controller in test mode changes the mode as follows.

Message area of TV screen

N300J ------------------

-------------

----------------

Becomes test mode ----

Version of backend -----

Version of frontend -----

TEST MODE

BE VERSION :

FE VERSION :

TEST MODE

FL Display becomes all lighting

CHCK -------------------

Check mode --------------

CHECK MODE

4.2 Initialization method

Please initialize according to the following procedures 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 "FWD SKIP" key of the main body. (3) When indicate "P" on the FL display, initialization is completed.

STANDBYON

DSPLAY /DMMER

TTLE

CANCEL

GROUP RETURN

213

546

879

010 +10

SUB TTLE AUDIO ZOOM

ANG E

SLDE EFFECT

OP MENU

SET UP

SLOW

PREVIOUS SELECT NEXT

THUM NAIL LST

ENTER

IP ON SCREEN

SET UP key (switch of mode)

POWER key

FL Display

STOP key

(for test mode)

Message area

PLAY key

(for test mode)

FWD SKIP key

(for initialize)

(No.XA016)1-15

4.3 Upgrading of firmware

The latest firmware for upgrading is updated in "Optical disc CSG" page in JS-NET. At the time of service, compare the version of the product and the latest version, and upgrade the old version into the latest version.

4.3.1 Distribution method

(1) Compressed file is distributed through JS-NET. (2) Download the version of the destination of the model, and self-extract the file. (3) "bank30.rom" file is made. (4) Write "bank30.rom" file in the root of CD-R/RW. (Folders such as jvc_dvd are not necessary.)

4.3.2 Upgrade method

(1) Prepare upgrade disc with "bank30.rom" file written in its root. (2) Press "POWER" key of the main body to turn the main body on. (3) Insert the upgrade disc. (4) The contents of disc are read automatically and upgrade is started. (5) TV screen 1/29,2/29... if the count-up is displayed and it becomes 29/29, it will be displayed on FL display as "DONE", and up-

grade will be completed. (6) When upgrade finishes, the main body changes from the POWER ON mode to STANDBY mode. (7) Press the "OPEN/CLOSE" key, and open the tray to eject the disc. (8) Set the main body at test mode, and perform initialization. Then, confirm the version of the firmware.

1-16 (No.XA016)

4.4 Confirm method of operation Please confirm the operation of the undermentioned item after doing the repair and the upgrade of the firmware.

Initialize Refer to the initialization method.

Opening picture check (Power ON) It should be display "JVC"

Muting working The noise must not be had to the performance b eginning when yo u push "PLAY" button or

at ON/STANDBY.

FL Display The mark and the logo, etc. displayed by each operation mu st 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 not long in the malfunction.

Search Both forward-searches and backward-searches should be able to be done.Do not stop be

searching or after the search.

Skip Both forward-skip and backward-skip should be able to be done.Do not stop be after the skip.

Playback Do not find abnormality etc. of tone quality and the picture quality.

Most outside TITLE playback check Play VT-501 TITLE 59 CHAPTER 1 , check normal playback.

(No.XA016)1-17

5.1 Servo volume

Press OPEN /CLOSE key

SECTION 5

TROUBLESHOOTING

Is tray

operation

Confirmation of tray drive circuit

and circuit in surrounding

correct?

Is the traverse moving along the innermost

perimeter for SW detection?

"NO DISC" message appears

immediately after vertical movement of the pick-up lens

The state that DISC does not rotate 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?

OFF Even when it retracts correctly, if it is out of focus and makes repeated retries with a clicking sound, it is in error.

See "(4) Focus ON error"

in "Check points for individual errors"

Is tracking retraction OK?

See "(3) Traverse movement error" in "Check points for individual errors"

See "(2) Disk detection, distinction error" in "Check points for individual errors"

See "(1) Spindle startup error" in "Check points for individual errors"

Is the inter-layer jump OK?

LO LI

Two layers of DVD only.

(8) Inter-layer

jump error

OFF

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?

1-18 (No.XA016)

See "(5) Tracking ON error"

in "Check points for individual errors"

Has the disc information

been collected?

Stop will result

(7) Address read

error

Check (9),(10),(11), and

See "(6) Spindle CLV error"

in "Check points for individual errors"

Is playback

possible?

(12) items in "Check points for individual errors"

OK !

Fig.1

5.2 Check points for each error

5.2.1 Spindle start error

(1) Defective spindle motor

• Are there several ohms resistance between each pin of CN201 (The power supply is turned off and measured.)

• Is the sign wave of about 100mVp-p in the voltage had from each terminal? [ CN201"10"(H1+),"11"(H1-),"7"(H2+),"8"(H2-),"5"(H3+),"6"(H3-) ]

(2) Defective spindle motor driver (IC251

• Has motor drive voltage of a sine wave or a rectangular wave gone out to each terminal(SM1~3) of CN201"1,2,3" and IC251"2,4,7"?

• Is FG pulse output from the terminal of IC251

• Is it "L(about 0.9V)" while terminal of IC251

(3) Has the control signal come from servo IC or the microcomputer?

• Is it "H" while the terminal of IC251"23"(/SPMUTE) is operating?

• Is the control signal input to the terminal of IC251 (changes from VHALF voltage while the motor is working.)

• Is the VHALF voltage input to the terminal of IC251

(4) Is the FG signal input to the servo IC?

• Is FG pulse input to the terminal of IC301

5.2.2 Disc Detection, Distinction error (no disc, no RFENV)

• Laser is defective.

• Front End Processor is defective (IC101

• APC circuit is defective. --- Q101

• 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 "57"(RFENV) and IC101 "40" (FEOUT)?

)

"24"(FG) according to the rotation of the motor?

"15"(VH) is rotating the motor?

"22"(EC)?

"21"(ECR)?

"177"(FG) according to the rotation of the motor?

, Q102.

"1-2","2-3","1-3"?

5.2.3 Traverse movement NG

(1) Defective traverse driver

• Has the voltage come between terminal of CN101 "2" and "4" ?

(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" while the terminal of IC201

• TRSDRV Is the signal input? (IC301

(4) TRVSW is the signal input from microcomputer? (IC301

5.2.4 Focus ON NG

• Is FE output ? --- Pattern, IC101

• Is FODRV signal sent ? (R209) --- Pattern, IC301 "172"

• Is driving voltage sent ?IC201

• Mechanical unit is defective.

5.2.5 Tracking ON NG

• When the tracking loop cannot be drawn in, TE shape of waves does not settle.

• Mechanical unit is defective. Because the self adjustment cannot be normally adjusted, the thing which cannot be normally drawn in is thought.

• Periphery of driver (IC201 Constant or IC it self is defective.

• Servo IC (IC301 When improperly adjusted due to defective IC.

)

"9"(STBY1) ?

"174")

"188")

"13", "14" --- If NG, pattern, driver, mechanical unit .

)

(No.XA016)1-19

5.2.6 Spindle CLV NG

• IC101

• Does not the input or the output of driver's spindle signal do the grip?

• Has the tracking been turned on?

• Spindle motor and driver is defective.

• Additionally, "IC101

5.2.7 Address read NG

• Besides, the undermentioned cause is thought though specific of the cause is difficult because various factors are thought.

5.2.8 Between layers jump NG (double-layer disc only)

5.2.9 Neither picture nor soun d is outp ut

(1) It is not possible 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?

-- "55"(DIN), "54(DIP).

and IC301" and "Mechanism is defective(jitter)", etc. are thought.

Mechanism is defective. (jitter)

IC301

The disc is dirty or the wound has adhered.

Mechanism defective Defect of driver's IC(IC201 Defect of servo control IC(IC301)

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?

)

5.2.10 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?

5.2.11 Others

• The image is sometimes blocked, and the image stops.

• The image is blocked when going to outer though it is normal in suroundings in the disk and the stopping sympton increases.

There is a possibility with bad jitter value for such a symptom.

5.2.12 CD During normal playback operation

(1) Is TOC reading normal?

• Displays total time for CD-DA.

• Shifts to double-speed mode for V-CD (2) Is playback afterwards possible? (3) When can not do a normal playback

• --:-- is displayed during FL search.

According to [It is not possible to search ] for DVD(9), check the feed and tracking systems.

• No sound is output although the time is displayed.(CA-DA)

DAC, etc, other than servo.

• The passage of time is not stable, or picture is abnormal.(V-CD)

• The wound of the disc and dirt are confirmed.

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