JVC KWAVX-700, KWAVX-701, KWAVX-706 Service manual

SERVICE MANUAL

DVD RECEIVER WITH MONITOR

MA26120064

KW-AVX700E,KW-AVX700U,

KW-AVX700UN,KW-AVX700A,

KW-AVX701UN,KW-AVX706J,

KW-AVX706U,KW-AVX706UN,

KW-AVX706E,KW-AVX706EU,

KW-AVX706EE

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-35

No.MA261

2006/4

SPECIFICATION

AMPLIFIER

Power Output (for northern america) 20 W RMS × 4 Channels at 4 Ω and [< or =] 1% THD+N

Maximum Power Output (except northern america)

Continuous Power Output (RMS) (except northern america)

Signal to Noise Ratio For northern america 80 dBA (reference: 1 W into 4

Load Impedance 4

Equalizer Control Range Frequencies 60 Hz, 150 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.3 kHz, 15 kHz

Audio Output Level (F-OUT/R-OUT/CENTER/SUBWOOFER)

Color System NTSC (for northern america)

Video Output (composite) 1 Vp-p/75

Other Terminals Input LINE IN, VIDEO IN, Antenna input

Frequency Range FM (for northern america) 87.5 MHz to 107.9 MHz (with channel interval set to 100 kHz or 200 kHz)

FM Tuner Usable Sensitivity 11.3 dBf (1.0

AM Tuner (for northern america) Sensitivity/Selectivity 20

MW Tuner (for europe and australia) Sensitivity/Selectivity 20

LW Tuner (for europe and australia) Sensitivity 50

AM Tuner (for asia) Sensitivity/Selectivity: 20

Signal Detection System Non-contact optical pickup (semiconductor laser)

Frequency Response DVD, fs=48 kHz 16 Hz to 22 000 Hz

Dynamic Range 93 dB

Signal-to-Noise Ratio 95 dB

Wow and Flutter Less than measurable limit

Front/Rear 50 W per channel

Front/Rear 20 W per channel into 4

Except northern america 70 dB

Level ±10 dB

Line-Out Level/Impedance 2.5 V/20 k

Output Impedance 1 k

Output 2nd AUDIO OUT

Others CD changer, AV BUS

FM/AM TUNER

Fm (ecxept northern america) 87.5 MHz to 108.0 MHz

AM (for northern america) 530 kHz to 1 710 kHz (with channel interval set to 10 kHz)

AM (for europe and australia) (MW) 522 kHz to 1 620 kHz

AM (for asia) 531 kHz to 1 602 kHz

50 dB Quieting Sensitivity 16.3 dBf (1.8

Alternate Channel Selectivity (400 kHz) 65 dB

Frequency Response 40 Hz to 15 000 Hz

Stereo Separation 35 dB

DVD, fs=96 kHz 16 Hz to 44 000 Hz

VCD/CD 16 Hz to 20 000 Hz

monic distortion

Ω

(4 Ω to 8 Ω allowance)

Ω

load (full scale)

Ω

PAL (for europe and australia) PAL/NTSC (for asisa)

Ω

87.5 MHz to 108.0 MHz (with channel interval set to 50 kHz)

531 kHz to 1 602 kHz (with channel interval set to 9 kHz)

(LW) 144 kHz to 279 kHz

V/75 Ω)

V/35 dB

DVD/CD

Ω

, 40 Hz to 20 000 Hz at no more than 0.8% total har-

Ω

)

1-2 (No.MA261)

MONITOR

Screen Size 6.5 inch wide liquid crystal display

Number of Pixel 280 800 pixels: 400 (horizontal)

Drive Method TFT (Thin Film Transistor) active matrix format

Color System NTSC (for northern america)

Aspect Ratio 16:9 (wide)

Allowable Storage Temperature -10

Allowable Operating Temperature 0

Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)

Grounding System Negative ground

Allowable Operating Temperature 0

Dimensions (W

Mass (approx.) 2.6 kg (5.8 lbs) (excluding accessories)

H × D) Installation Size (approx.) 178 mm × 100 mm × 160 mm (7-1/16" × 3-15/16" × 6-5/16")

Panel Size (approx.) 170 mm

PAL/NTSC (except northern america)

C to +60°C (14°F to 140°F)

C to +40°C (32°F to 104°F)

GENERAL

C to +40°C (32°F to 104°F)

93 mm × 29 mm (6-3/4" × 3-11/16" × 1-3/16")

3 × 234 (vertical)

Design and specifications are subject to change without notice.

(No.MA261)1-3

1.1 Safety Precautions

SECTION 1

PRECAUTIONS

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.

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

1-4 (No.MA261)

1.2 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.

1.2.1 Grounding to prevent damage by static electricity

Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products. 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 sheet) 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.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

(3) Handling the optical 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 diode.

1.3 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) It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

1.4 Attention when traverse unit is decomposed

*Please refer to "Disassembly method" in the text for the pickup unit.

• Apply solder to the short land before the flexible wire is disconnected from the connector on the pickup unit. (If the flexible wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)

• In the assembly, be sure to remove solder from the short land after connecting the flexible wire.

Flexible wire

CN101

Short-circuit points

Mechanism control board

(No.MA261)1-5

1.5 Important for laser products

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation 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 CD,MD and DVD 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 defeated. It is

dangerous to defeat the safety switches.

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 here in may result in

hazardous radiation exposure.

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

REPRODUCTION AND POSITION OF LABELS

WARNING LABEL

CAUTION : Visible and Invisible

CLASS 1 LASER PRODUCT

laser radiation when open and interlock failed or defeated. AVOID DIRECT EXPOSURE TO BEAM. (e)

ADVARSEL : Synlig og usynlig laserstråling når maskinen er åben eller interlocken fejeler. Undgå direkte eksponering til stråling. (d)

VARNING : Synlig och osynling laserstrålning när den öppnas och spärren är urkopplad. Betrakta ej strålen. (s)

VARO : Avattaessa ja suojalukitus ohitettuna tai viallisena olet alttiina näkyvälle ja näkymättömälle lasersäteilylle. Vältä säteen kohdistumista suoraan itseesi. (f)

1-6 (No.MA261)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

(No.MA261)1-7

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the front panel assembly (See Fig.1 to 4)

(1) From the bottom side of main body, insert the screw-driver

to hole of the third gear from hole a of the bottom chassis, and then turn the gear to clockwise until front panel assembly comes up. (See Fig.1)

(2) Remove the two screws A attaching the front panel assem-

bly. (See Fig.2)

(3) Remove the four screws B attaching the front panel as-

sembly. (See Fig.2)

(4) Disengage the front panel assembly from hook b and re-

move the front panel assembly. (See Fig.2)

(5) Remove the two screws C attaching the front panel assem-

bly. (See Fig.3)

(6) Disconnect the connector wire from connector CN374

the connection board and then take out the front panel assembly. (See Fig.4)

Fig.1

(both side)

Fig.2

Fig.3

1-8 (No.MA261)

CN374

Fig.4

3.1.2 Removing the bottom chassis assembly

(See Fig.5 to 8)

(1) Remove the four screws D and two screws E attaching the

heat sink. (See Fig.5)

(2) Remove the two screws F attaching the bottom chassis as-

sembly. (See Fig.6)

(3) Remove the two screws G attaching the bottom chassis as-

sembly. (See Fig.7)

(4) Remove the three screws H and one screw J attaching the

rear bracket. (See Fig.8)

Fig.5

Fig.6

Fig.7

HJHJ

Fig.8

(No.MA261)1-9

3.1.3 Removing the rear bracket (See Fig.9 and 10)

(1) Remove the two screws K and one screw L attaching the

rear heat sink. (See Fig.9)

(2) Remove the eight screws M, two screws N and one screw

P attaching the rear bracket. (See Fig.9)

(3) Disconnect the connector wire from fan motor connected to

of the sub board. (See Fig.10)

CN681

KMMM

MNN

MMMM

Fig.9

CN681

Fig.10

1-10 (No.MA261)

3.1.4 Removing the main section

(See Fig.11 to 13)

(1) Disconnect the connector wire from connector CN302

connection board. (See Fig.11)

(2) Disconnect the card wire from connector CN702

board. (See Fig.12)

(3) Remove the four screws Q attaching the main section.

(See Fig.13)

of main

CN302

Fig.11

CN702

Fig.12

Fig.13

(No.MA261)1-11

3.1.5 Removing the main board (See Fig.14)

(1) Disconnect the card wire from connector CN703

main board.

(2) Remove the four screws R attaching the main board.

of the

3.1.6 Removing the sub board (See Fig.15)

(1) Remove the four screws S attaching the sub board.

3.1.7 Removing the DVD mechanism assembly (See Fig.16)

(1) Remove the three screws T attaching the DVD mechanism

assembly.

Fig.14

Fig.15

1-12 (No.MA261)

Fig.16

3.1.8 Removing the connection board

(See Fig.17)

(1) Remove the insulator from DVD mechanism assembly. (2) Disconnect the card wires from connector CN301

CN303 of the connection board.

(3) Remove the four screws U attaching the connection board.

and

3.1.9 Removing the monitor assembly

(See Fig. 18 and 19)

(1) Remove the ten screws V attaching the sub connect board.

(See Fig.18)

(2) Disconnect the flexible wire from connector CN371

sub connect board. (See Fig.19)

Caution:

In this time, DISC EJECT button come off to easy, do not lost it.

of the

CN301

CN303

Fig.17

CN371

Fig.18

Fig.19

(No.MA261)1-13

3.2 Monitor section

3.2.1 Removing the front bracket (See Fig.20)

(1) Remove the two screws W attaching the FPC cover. (2) Remove the four screws X and four screws Y attaching the

front bracket assembly.

(3) Disengage the four hooks b and remove the front bracket

assembly.

Caution:

In this time, FPC cover come off to easy, do not lost it.

3.2.2 Removing the display unit (See Fig.21)

(1) Disconnect the card wires from connector CN422

CN423 of the panel board.

(2) From both side of the display unit, remove the four screws

Z attaching the display unit.

(3) Disengage the six hooks c and remove the display unit.

and

Fig.20

CN423 CN422

3.2.3 Removing the panel board (See Fig.22)

(1) Disconnect the flexible wire from connector CN411

panel board.

(2) Disconnect the connector wire from connector CN471

the panel board. (3) Remove the one screw AA attaching the earth wire. (4) Flat to two bending part d of the panel bracket and then re-

move the panel board.

of the

Fig.21

CN411 CN471

Fig.22

1-14 (No.MA261)

3.2.4 Removing the switch board (See Fig.23)

(1) Remove the nine screws BB attaching the switch board.

BB BB

Fig.23

(No.MA261)1-15

3.3 DVD mechanism assembly

3.3.1 Removing the mechanism control board (See Fig.1)

Caution:

Before disconnecting the flexible wire extending from the DVD pickup, solder the short-circuit point on the flexible wire using a grounding soldering iron. If you do not follow this instruction, the DVD pickup may be damaged.

(1) Turn over the body, and solder the short-circuit points on

the flexible wire extending from the DVD pickup.

(2) Disconnect the flexible wire from connector CN101

mechanism control board.

(3) Disconnect the card wire from connector CN201

mechanism control board.

(4) Disconnect the flexible wire from connector CN202

mechanism control board.

(5) Unsolder two soldered points a on the mechanism control

board and remove the wire extending from the feed motor. (6) Remove the screw A attaching the lug wire. (7) Remove the two screws B and screw C attaching the

mechanism control board.

Caution:

• As the flexible wire to be connected to CN101 attach it to the mechanism control board using a double tape.

• After reassembling, unsolder the short-circuit points.

on the

, make sure to

Flexible wire

Double tape

CN101

Short-circuit points

Lug wire

CN201

Feed motor

CN202

Mechanism control board

Fig.1

1-16 (No.MA261)

3.3.2 Removing the top cover (See Fig.2)

(1) Remove the two screws D attaching the top cover on the

back of the body.

(2) Remove the top cover upward.

Reference:

When reassembling, set part b of the top cover under the bending part c of the chassis frame.

3.3.3 Removing the mechanism section (See Fig.2 to 4)

• Remove the top cover.

(1) From the bottom of the body, remove the screw E attaching

the lug wire. (See Fig.2.)

(2) Remove the two screws F attaching the right and left stop-

pers on the front side. (See Fig.2.)

(3) Remove the two floating springs on the bottom of the body.

(See Fig.3.)

(4) Move the mechanism section upward and remove from the

chassis frame. The three damper springs come off from the dampers. (See Fig.4.)

Caution:

• When reassembling, reattach the damper spring to the damper respectively and insert the three shafts on the bottom of the mechanism to the dampers.

• Before inserting the shaft to the dampers, apply IPA to the hole of damper.

Floating spring

Fig.3

Mechanism section

Stopper

Top cover

Stopper

Lug wire

Damper SP.(F)

(Silver)

Damper (F) (Black)

Damper SP.(F)

(Silver)

Damper (F) (Black)

Fig.4

Damper SP.(R)

(Red)

Damper (R) (Purple)

Chassis frame

Fig.2

(No.MA261)1-17

3.3.4 Removing the clamper unit (See Fig.5 to 7)

• Remove the top cover and the mechanism section.

(1) Remove the clamper2 spring on the bottom of the mecha-

nism section. (See Figs.5.and 6.)

(2) Release the part d of the clamper spring from the bending

part of the chassis base assembly. (See Fig.7.)

(3) Move the clamper unit in the direction of the arrow and turn.

Release the two joints e and f, then remove the clamper unit upward. (See Fig.6.)

3.3.5 Reattaching the clamper unit (See Fig.5 to 9)

(1) Attach the clamper spring to the clamper unit. (See Fig.8.) (2) Move the clamper unit to set the side joints e and f to each

boss of the chassis base assembly. Make sure that part g is inserted to the notch of the chassis base assembly. (See Figs.5 and 9.)

(3) Move the part d of the clamper spring to the outside of the

bending part of the chassis base assembly. (See Fig.7.)

(4) Attach the clamper2 spring to the chassis base assembly.

(See Figs.5 and 6.)

Caution:

When reattaching, temporarily hook the end of the clamper spring as shown in the figure to make the work easy. (See Fig.8.)

Clamper unit

Clamper2 spring

Chassis base assembly

Fig.6

Clamper spring

Clamper2 spring

Chassis base assembly

Fig.7

Fig.5

1-18 (No.MA261)

Clamper unit

Clamper spring

Fig.8

Fig.9

Notch

(No.MA261)1-19

3.3.6 Removing the front unit (See Fig.10 to 12)

• Remove the top cover and the mechanism section.

(1) Disconnect the flexible wire from connector CN202 on the

mechanism control board at the bottom of the body. (See Fig.10.)

(2) Remove the screw G attaching the front unit on the top of

the body. (See Fig.11.)

(3) Move the front unit toward the front to release joint h, and

release two joints i and j on the right side of the chassis base assembly. Then remove the front unit upward. (See Figs.11 and 12.)

(4) Remove the two screws H attaching the switch board. (See

Fig.12.)

Reference:

You can remove the switch board only without removing the front unit.

Caution:

When reassembling, attach the flexible wire extending from the switch board using the double tape. (See Figs.10 and 12.)

Mechanism control board

Front unit

Fig.11

CN202

Double tape

Fig.10

Flexible wire

Double tape

Switch board

Front unit

1-20 (No.MA261)

Fig.12

3.3.7 Removing the loading arm assembly

(See Fig.13 , 14)

• Remove the top cover, the mechanism section and the front

unit. (1) From the top of the body, move the loading arm assembly

from the front side upward, and release the bosses from the right and left joints k and m of the chassis base assembly.

(2) Release the boss from notch n of the connect arm on the

right side of the body, and release the boss from notch p of the slide cam assembly on the left side.

Loading arm assembly

Side cam assembly

Fig.13

Loading arm assembly

Connect arm

Fig.14

(No.MA261)1-21

3.3.8 Removing the rod (L)(R)/roller assembly (See Fig.15 and 16)

• Remove the top cover, the mechanism section, the front unit

and the loading arm assembly. (1) Release the rod (L) and (R) from the joints q at the bottom

of the loading arm assembly (See Fig.15.)

(2) Remove the roller assembly from the loading arm assem-

bly. (See Fig.16.)

(3) Remove the two collars and washer from the roller assem-

bly. (See Fig.16.)

Caution:

After attaching the loading arm assembly to the roller assembly, attach the rod (L) and (R). Attach the rods to the right and left collars of the roller. (See Fig.15.) When reattaching the rod (L) and (R) to the loading arm assembly, engage each joint as shown in Fig.15. As joints q of the rod (L), let the rod through q before reattaching it.

Collar

Rod(R) Rod(L)

Collar

Rod(L)

Rod(R)

Loading arm assembly

Fig.15

Roller assembly

Loading arm assembly

Rod(L)

Collar

Washer

Rod(R)

1-22 (No.MA261)

Fig.16

3.3.9 Removing the DVD pickup assembly

(See Fig.17 to 19)

• Remove the mechanism control board.

(1) From the bottom of the body, turn the feed gear in the di-

rection of the arrow to move the DVD pickup outwards. (See Fig.17.)

(2) Remove the screw J attaching the thrust spring. (See

Fig.17.)

(3) Remove the DVD pickup assembly upward on the L.S.gear

side and release from sub shaft at joint r. Move the lead screw of the DVD pickup assembly in the direction of the arrow to release from joint s. (See Fig.18.)

Caution:

• When releasing the lead screw at joint s, the L.S.collar comes off at the end of the lead screw. When reassembling, reattach the L.S.collar to the lead screw and engage joint s. (See Fig.18.)

• When reattaching the L.S.collar, reattach it to the point s of the lead screw, and to the rod (M). Make sure that the L.S.collar is set on the rod (M) spring. (See Fig.18.)

(4) Remove the screw K attaching the rack spring/ rack plate

on the DVD pickup. (See Fig.19.)

(5) Pull out the lead screw. (See Fig.19.)

Caution:

Perform adjustment after replacing the pickup.

DVD Pickup assembly

Feed gear

Thrust spring

Fig.17

L.S.collar

Rod(M)

Lead screw

Sub shaft

L.S.collar

L.S.gear

Fig.18

Rack spring

Lead screw

Rack plate

DVD Pickup

Fig.19

(No.MA261)1-23

3.3.10 Removing the spindle motor

(See Fig.20)

• Remove the mechanism control board. Remove the two screws L attaching the spindle motor on the bottom of the body.

Caution:

Perform adjustment when reattaching the spindle motor.

3.3.11 Removing the feed motor assembly

(See Fig.21 and 22)

• Remove the mechanism control board. (1) Remove the feed TRI. spring on the bottom of the body.

(See Fig.21.)

(2) Remove the two screws M attaching the feed motor as-

sembly. (See Fig.21.)

(3) Remove the slit washer from the motor H. assembly and

pull out the worm wheel. (See Fig.22.) Remove the two screws N attaching the feed motor. (See Fig.22.)

Spindle motor

Feed TRI. spring

Fig.20

Feed motor assembly

1-24 (No.MA261)

Fig.21

Slit washer

Worm wheel

Feed moto

Motor H. assembly

Fig.22

SECTION 4

ADJUSTMENT

4.1 Test instruments required for adjustment

(1) Digital oscilloscope (100MHz) (2) Jitter meter (3) Digital tester (4) Electric voltmeter (5) Tracking offset meter (6) Test Disc : VT501 or VT502 (7) Extension studs : STDV001-3P (8) Extension cable :

EXTJD001-45PF (CN702 - CN305) EXTDV001-40PF (CN371 - CN421)

4.2 Standard measuring conditions

Power supply voltage DC14.4V(11 to 16V)

Load impedance 4Ω(2 Speakers connection) Line Output 20KΩ

Caution:

Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively, before supply the power. If voltage is applied without attaching these parts, the power amplifier IC and regulator IC will be destroyed by heat.

EXTDV001-24PF (CN602 - CN703) EXTJD001-10PF (CN404 - CN303) EXTJD001-60PF (CN301 - CN401) EXTCN001-3P (CN302 - CN604) EXTCN001-6P (CN374 - CN381) EXTFP001-18P (CN601 - CN372) EXTFP001-24P (CN701 - CN373)

4.3 Connection method

Connection procedure

(1) Attach the front chassis assembly to the main board. (2) Attach the heat sink and rear bracket to the main board. (3) Attach the extension studs to the DVD mechanism assembly. (4) Connect the DVD mechanism assembly and the main board with a extension cable.

EXTJD001-45PF

EXTDV001-24PF

EXTFP001-18P

CN601

EATCN001-3P

CN703

CN602

CN604

CN702

CN701

CN371

EXTDV001-40PF

CN421

EXTFP001-24P

CN304

CN302

CN305

1 7 3

N C

EXTFP001-24P

C N 3 8 2

CN381

EXTCN001-6P

CN303

CN301

EXTJD001-10PF

CN301

EXTFP001-18P

CN372

CN373

CN374

EXTCN001-6P

Conntacte CB Front side

EXTJD001-60PF

CN401

EXTJD001-10PF

Mecha bottom side

CN404

CN 404

CN40

(No.MA261)1-25

4.4 Adjustment method for jitter

After replacing the pickup, set the unit in the service mode to display a jitter value on the LCD. Confirm that the jitter value measured with a jitter meter is within 12% of the jitter value displayed on the LCD. If it is within 12%, then adjustment is not necessary. If the measured jitter value is outside the 12% tolerance range, perform the following adjustments.

4.4.1 Adjustment procedure

(1) Set the unit to the service mode and display a jitter value (hex data) on the LCD. (2) Turn each of the screws a, b and c, by a half-turn per step, in the direction that reduces the jitter value in order to minimize it.

(Do not turn a screw more than a half turn at a time, but adjust the screws in the cycle of the same level is turned in the pair of

b+c and the same level is turned in the pair of a+b.)

(3) After completing the adjustment, secure the screws with screw lock paint.

Jitter value adjustment procedure (Pickup horizontal level adjustment relative to the DVD recording surface) (For the adjustment tool use a 3 mm wrench and not a screwdriver, this procedure will make the adjustment easier.)

3 mm wrench

(Do not turn a screw more than a half turn at a time, but adjust the screw in the cycle of same level turn by pair of b+c → pair of

a+b.)

(3) After completing the adjustment, secure the screws with screw lock paint.

1-26 (No.MA261)

4.5 Jitter value conversion table

Load the test DVD and set the unit to the service mode. A jitter value converted to the hex value is displayed on the LCD. Refer to the corresponding decimal notation value shown in the following Jitter Conversion Table. The adjustment is OK if the jitter value measured with a jitter meter is within 12% of the jitter value displayed on the LCD. If the measured jitter value is outside the 12% tolerance range, adjust it to minimize the difference between the measured value and the displayed value.

Indicated

on the LCD

EF56 EF22 EEEE EEBA EE86 EE52 EE1E EDEA EDB6 ED82 ED4E ED1A ECE6 ECB2 EC7E EC4A EC16 EBE2 EBAE EB7A EB46 EB12 EADE EAAA EA76 EA42 EA0E E9DA E9A6 E972 E93E E90A E8D6 E8A2 E86E E83A E806 E7D2

Jitter value

(%)

4.7

4.8

4.9

5.0

5.1

5.2

5.3

5.4

5.5

5.6

5.7

5.8

5.9

6.0

6.1

6.2

6.3

6.4

6.5

6.6

6.7

6.8

6.9

7.0

7.1

7.2

7.3

7.4

7.5

7.6

7.7

7.8

7.9

8.0

8.1

8.2

8.3

8.4

Indicated

on the LCD

E79E E76A E736 E702 E6CE E69A E666 E632 E5FE E5CA E596 E562 E52E E4FA E4C6 E492 E45E E42A E3F6 E3C2 E38E E35A E326 E2F2 E2BE E28A E256 E222 E1EE E1BA E186 E152 E11E E0EA E0B6 E082 E04E E01A

Jitter value

(%)

8.5

8.6

8.7

8.8

8.9

9.0

9.1

9.2

9.3

9.4

9.5

9.6

9.7

9.8

9.9

10.0

10.1

10.2

10.3

10.4

10.5

10.6

10.7

10.8

10.9

11.0

11.1

11.2

11.3

11.4

11.5

11.6

11.7

11.8

11.9

12.0

12.1

12.2

Indicated

on the LCD

DFE6 DFB2 DF7E DF4A DF16 DEE2 DEAE DE7A DE46 DE12 DDDE DDAA DD76 DD42 DD0E DCDA DCA6 DC72 DC3E DC0A DBD6 DBA2 DB6E DB3A DB06 DAD2 DA9E DA6A DA36 DA02 D9CE D99A D966 D932 D8FE D8CA D896 D862

Jitter value

(%)

12.3

12.4

12.5

12.6

12.7

12.8

12.9

13.0

13.1

13.2

13.3

13.4

13.5

13.6

13.7

13.8

13.9

14.0

14.1

14.2

14.3

14.4

14.5

14.6

14.7

14.8

14.9

15.0

15.1

15.2

15.3

15.4

15.5

15.6

15.7

15.8

15.9

16.0

Calculation

Indicated on the LCD

E9A6 7.5

Jitter (%)

(No.MA261)1-27

4.6 Service mode

4.6.1 Service mode 1 (Indication of a service mode 1 is nothing.)

Keep this state more 2 seconds while continuing pressing the [STANDBY/ON ATTENUATOR] button and [OPEN] button sequentially.

Screen indication

NO EJECT? EMERGENCY EJECT?

4.6.2 Service mode 2

Keep this state more 2 seconds while continuing pressing the [MENU] button, [VOLUME-] button and [ENT] button sequentially.

Screen indication

SERVICE MODE 2 INITIALIZE DVD

Exchanging it operate a menu of a service mode with the [UP] button

and [DOWN] button. Operate choice of a menu with a [ENT] button.

*1 : When an [ENT] button is pushed in NO EJECT indication, it is set by an EJECT prohibition mode. When an [ENT] button is pushed in EJECT OK indication, it is aet bu a normal mode. *2 : Forced EJECT movement

A screen becomes normal indication after an ENT button was pushed.

Press the [ENT] button.

SERVICE MODE 2 INITIALIZE DVD OK

4.6.3 Service mode 3

Keep this state more 2 seconds while continuing pressing the [MENU] button, [VOLUME+] button and [ENT] button sequentially.

Screen indication

SERVICE MODE 3 INITIALIZE ALL INITIALIZE SERVICE MODE RUNNING MODE

Full initialization of EEPROM of a DVD unit ( It is included a permanent domain) After clear completion, this indication is continuedtill an effective key is input. (OK **)

Exchanging it operate a menu of a service mode with the [UP] button and [DOWN] button. Operate choice of a menu with a [ENT] button.

INITIALIZE ALL (Each EEPROM is initialized by a factory shipment state.) Main micon EEPROM initialization (except a ROM correction domain) Panel micon EEPROM initialization (except factory adjustment data domain and ROM correction domain) DVD unit EEPROM initialization (except a permanent domain) After clear completion, a screen returns to normal indication after OK indication was displayed for three seconds.

1-28 (No.MA261)

INITIALIZE (Initialization of a user area of each EEPROM) Main micon EEPROM initialization (a user entry domain and picture adjustment data) DVD unit EEPROM initialization (except a permanent domain) After clear completion, a screen returns to service mode indication after OK indication was displayed for three seconds.

SERVICE MODE

SERVICE MODE VERSION AREA/REGION

SERVICE MODE ERROR READ

ERROR CLEAR TEMPERATURE MEMORY CHECK DVD NTSC/PAL DVD CHECK MODE

Exchanging it operate a menu of a service mode with the [UP] button and [DOWN] button. Operate choice of a menu with a [ENT] button. Return to previous menu with a [BACK] button.

VERSION

MAIN

JD6

PANEL

Micon version indication

Main micon version and ROM correction version JD6 version CH version Panel micon version and ROM correction version TV Tuner version

AREA/REGION

Area and region indicattion SYS-AREA JD6-AREA JD6-REGION JD6-CPPM

Main micon area JD6 area JD6 region CPPM Y: Finished with a note N: Non-note Check sum

TEMPERATURE Temperature data reading Temperature data by the temperature sensor in the main micon and JD6-PCB is read every 5 seconds and displayed in hex nimbers.

MEMORY CHECK Memory residual quantity indication mode Data residual quantity of a disc is displayed by LCD. About the playback control-related key ( [FSKIP], [BSKIP], [UP], [DOWN], [VOL] ), only movement is effective. Indication does not change as memory residual quantity indication. About cancellation of this mode, press the [STANDBY/ON ATTENUATOR] button.

(No.MA261)1-29

DVD NTSC/PAL

DVD picture change NTSC PAL

JD4 output picture setting (NTSC) JD4 output picture setting (PAL)

DVD CHECK MODE See "DVD CHECK MODE" for details.

ERROR READ DVD ERROR READ CH ERROR READ MECHA ERROR READ READ ALL

DVD ERROR READ Reading of a DVD unit error history

CH ERROR READ Reading of a CD changer error history

MECHA ERROR READ Reading of a door mechanism error history READ ALL Reading of a main micon EEPROM (All contents)

ERROR CLEAR DVD ERROR CLEAR CH ERROR CLEAR MECHA ERROR CLEAR

Clear of each error history A screen returns to following indication after clear completion.

RUNNING MODE See "Running mode" for details.

4.6.4 Service mode 4

Keep this state more 2 seconds while continuing pressing the [BACK] button, [MENU] button and [SRC] button sequentially.

Screen indication

SERVICE MODE 4 RDS S MODE MONITOR S MODE FLASH ROM WRITE MODE

Exchanging it operate s menu of a service mode with the [UP] button and [DOWN] button. Operate choice of a menu with a [ENT] button.

RDS S MODE RDS service mode (Only RDS model)

MONITOR S MODE R/W CHROMA 1 R/W CHROMA 2

*See "Monitor adjustment" for details. CHROMA DATA read/write of NTSC/PAL signal processing IC

CHROMA DATA read/write of TFT driver IC R/W CHROMA 3 DATA CLEAR

Clear of CHROMA DATA of 1,2 (return to an initial value)

1-30 (No.MA261)

FLASH ROM WRITE MODE (Cannot use)

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