Marantz DV-7000 Service Manual

Service

DV7000 /F1N, /K1G, /S1G, /U1G

F1B, /K1B, /N1B, /U1B

Manual

STANDBY

POWER ON/OFF

SECTION PAGE

1. MAIN UNIT

1.1 TECHNICAL SPECIFICATIONS ......................................................................................................... 1-1

1.2 CONNECTION FACILITIES ................................................................................................................ 1-2

1.3 INFORMATIONS ................................................................................................................................. 1-3

1.4 SERVICING HINT ............................................................................................................................... 1-4

1.5 DISASSEMBLY ................................................................................................................................... 1-5

1.6 REPLACEMENT OF PRINCIPAL COMPONENTS ............................................................................. 1-6

1.7 SERVICE MODE ................................................................................................................................. 1-8

1.8 ELECTRICAL ADJUSTMENT ........................................................................................................... 1-10

1.9 WAVEFORM ..................................................................................................................................... 1-12

1.10 WIRING DIAGRAM ........................................................................................................................... 1-13

1.11 BLOCK DIAGRAM ............................................................................................................................. 1-15

1.12 SCHEMATIC DIAGRAM .................................................................................................................... 1-17

1.13 PARTS LOCATION ........................................................................................................................... 1-27

1.14 EXPLODED VIEW AND PARTS LIST ............................................................................................... 1-32

1.15 ELECTRICAL PARTS LIST ............................................................................................................... 1-35

DVD PLAYER DV7000

VIDEO

OPEN/CLOSE

SURROUND

A-B

REPEAT

TITLE

DTS

SHUFFLE CHAPTER

SVCD

SHUFFLE

CHAPTER

TITLE

TRACK

SCAN

TRACK

TIME

TOTAL

FTS

TRACK

PBC

SCAN

TABLE OF CONTENTS

DVD Player

PLAY

DIMMER

STOP

LEVEL

PAUSE

PHONES

2. TKM1000MZ ( DVD MODULE for MARANTZ )

2.1 SCHEMATIC DIAGRAM AND PARTS LOCATION ............................................................................. 2-1

2.2 MICROPROCESSOR AND IC DATA ................................................................................................ 2-15

2.3 EXPLODED VIEW AND PARTS LIST ............................................................................................... 2-28

2.4 ELECTRICAL PARTS LIST ............................................................................................................... 2-30

Printed in Japan

Please use this service manual with referring to the user guide ( D.F.U. ) without fail.

DV7000

383K855010 MIT 3120 785 22300 First Issue 2000.07

MARANTZ DESIGN AND SERVICE

MARANTZ AMERICA, INC.

WILDASH AUDIO SYSTEMS NZ

Using superior design and selected high grade components, MARANTZ company has created the ultimate in stereo sound. Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for which it is famous. Parts for your

MARANTZ equipment are generally available to our National Marantz Subsidiary or Agent.

ORDERING PARTS :

Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specified. The following information must be supplied to eliminate delays in processing your order :

1. Complete address

2. Complete part numbers and quantities required

3. Description of parts

4. Model number for which part is required

5. Way of shipment

6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.

USA

MARANTZ AMERICA, INC 440 MEDINAH ROAD ROSELLE, ILLINOIS 60172 USA PHONE : 630 - 307 - 3100 FAX : 630 - 307 - 2687

AMERICAS

SUPERSCOPE TECHNOLOGIES, INC. MARANTZ PROFESSIONAL PRODUCTS 2640 WHITE OAK CIRCLE, SUITE A AURORA, ILLINOIS 60504 USA PHONE : 630 - 820 - 4800 FAX : 630 - 820 - 8103

AUSTRALIA

JAMO AUSTRALIA PTY LTD 1 EXPO COURT, P.O. BOX 350 MT. WAVERLEY VIC 3149 AUSTRALIA PHONE : +61 - 3 - 9543 - 1522 FAX : +61 - 3 - 9543 - 3677

NEW ZEALAND

WILDASH AUDIO SYSTEMS NZ 14 MALVERN ROAD MT ALBERT AUCKLAND NEW ZEALAND PHONE : +64 - 9 - 8451958 FAX : +64 - 9 - 8463554

EUROPE / TRADING

MARANTZ EUROPE B.V. P.O.BOX 80002, BUILDING SFF2 5600 JB EINDHOVEN THE NETHERLANDS PHONE : +31 - 40 - 2732241 FAX : +31 - 40 - 2735578

AUSTRALIA

TECHNICAL AUDIO GROUP PTY, LTD 558 DARLING STREET, BALMAIN, NSW 2041, AUSTRALIA PHONE : 61 - 2 - 9810 - 5300 FAX : 61 - 2 - 9810 - 5355

THAILAND

MRZ STANDARD CO.,LTD 746 - 754 MAHACHAI ROAD., WANGBURAPAPIROM, PHRANAKORN, BANGKOK, 10200 THAILAND PHONE : +66 - 2 - 222 9181 FAX : +66 - 2 - 224 6795

TAIWAN

PAI- YUING CO., LTD. 6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C. PHONE : +886 - 2 - 25221304 FAX : +886 - 2 - 25630415

BRAZIL

PHILIP DA AMAZONIA IND. ELET. ITDA CENTRO DE INFORMACOES AO CEP 04698-970 SAO PAULO, SP, BRAZIL PHONE : 0800 - 123123 FAX : +55 11 534. 8988

(Discagem Direta Gratuita)

CANADA

LENBROOK INDUSTRIES LIMITED 633 GRANITE COURT, PICKERING, ONTARIO L1W 3K1 CANADA PHONE : 905 - 831 - 6333 FAX : 905 - 831 - 6936

SINGAPORE

WO KEE HONG (S) PTE LTD WO KEE HONG CENTRE NO.23, LORONG 8, TOA PAYOH SINGAPORE 319257 PHONE : +65 2544555 FAX : +65 2502213

MALAYSIA

WO KEE HONG ELECTRONICS SDN. BHD.

SUITE 8.1, LEVEL 8, MENARA GENESIS, NO. 33, JALAN SULTAN ISMAIL, 50250 KUALA LUMPUR, MALAYSIA PHONE : +60 3 - 2457677 FAX : +60 3 - 2458180

JAPAN

Technical

MARANTZ JAPAN, INC. 35- 1, 7- CHOME, SAGAMIONO SAGAMIHARA - SHI, KANAGAWA JAPAN 228-8505 PHONE : +81 42 748 1013 FAX : +81 42 741 9190

KOREA

MK ENTERPRISES LTD. ROOM 604/605, ELECTRO-OFFICETEL, 16-58, 3GA, HANGANG-RO, YONGSAN-KU, SEOUL KOREA PHONE : +822 - 3232 - 155 FAX : +822 - 3232 - 154

SHOCK, FIRE HAZARD SERVICE TEST :

CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC

cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product and controls and chassis bottom. Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, and verified before it is return to the user/customer. Ref. UL Standard No. 1492.

In case of difficulties, do not hesitate to contact the Technical

Department at above mentioned address.

991207MIT

1. TECHNICAL SPECIFICATIONS

Discs played

DVD video disc ............................................... 12 cm single sided, single layer

Compact disc

(CD-DA, Video CD) ......................................... 12 cm, 8 cm

Video system .................................................... PAL (625/50) / NTSC (525/60)

Audio system ................................................... Linear PCM audio

Video output

Line output level .............................................. 1.0 Vp-p / 75 ohms, unbalanced

S1-output level ................................................. Y output: 1.0 Vp-p / 75 ohms unbalanced

Color different output level ............................... Y output: 1.0 Vp-p / 75 ohms unbalanced

R/G/B output .................................................... R/G/B output: 0.7 Vp-p 21-pin SCART connector x 2 (/N1B)

12 cm single sided, double layer 12 cm double sided, single layer 12 cm double sided, double layer (one layer per side) 8 cm single sided, single layer 8 cm single sided, double layer 8 cm double sided, single layer 8 cm double sided, double layer (one layer per side)

MPEG 1/2 audio Dolby Digital (AC-3) DTS audio (Digital output only)

RCA pin Jack x 2

C output: 0.3 Vp-p / 75 ohms (PAL)

0.286 Vp-p / 75 ohms (NTSC)

4 pin mini DIN x 1

CB, CR output: 0.7 Vp-p / 75 ohms RCA pin Jack x 3 (/F1, /K1, /S1, /U1)

Audio output

Line output ....................................................... 2.0 Vrms / 330 ohms

RCA pin Jack x 2 system

Digital audio output

Optical output ................................................... Optical connector x 1

Coaxial output .................................................. 0.5 Vp-p / 75 ohm RCA pin Jack x 1

DVD Iinear audio characteristics

Frequency response ........................................ 4 Hz-22 kHz (Fs = 48 kHz)

S/N ratio ........................................................... More than 110 dB (Fs = 48 kHz / 24 bit PCM)

Dynamic range ................................................. More than 100 dB (Fs = 48 kHz / 24 bit PCM)

Total harmonic distortion ................................. Less than 0.0025% (Fs = 48 kHz / 24 bit PCM)

4 Hz-44 kHz (Fs = 96 kHz)

CD audio characteristics:

Frequency response ........................................ 4 Hz - 20 kHz (EIAJ)

S/N ratio ........................................................... More than 110 dB (EIAJ)

Dynamic range ................................................. More than 100 dB (EIAJ)

Total harmonic distortion ................................. Less than 0.0025% (EIAJ)

Pickup ............................................................... Wavelength: 655 nm (DVD)

Power requirements ........................................ 120V AC, 60 Hz (/U1)

Power consumption ........................................ 22 W (standby mode = approx 5 W, power off = 0 W)

Operation temperature .................................... 5 °C - 35 °C

Operation humidity range ............................... 5% - 90% (no condensation)

Wavelength: 790 nm (CD)

100V AC, 50 / 60 Hz (/F1) 230V AC, 50 Hz (/N1) 220V AC, 50 Hz (/K1) 220 - 230V AC, 50 / 60 Hz (/S1)

Dimensions ....................................................... 440 (W) x 87 (H) x 304 (D) mm (excluding protrusions)

Weight ............................................................... 4.0 kg

Supplied accessories

Auido / Video cable .......................................... x 1

D-BUS remote cable ........................................ x 1

Remote control unit .......................................... x 1

Batteries ........................................................... x 2

• For improvement purposes, specifications and design are subject to change without notice

1-1

2. CONNECTION FACILITIES

2.1 Video performance (/N1 only)

135791113151719

2. 1. 1 SCART

2 4 6 8 10 12 14 16 18 20

Pin No. TV (OUT) Pin No. AUX (IN)

Pin 1 Audio R out : 2Vrms Pin 1 Audio R out : 2Vrms Pin 2 Audio R in : 2Vrms Pin 2 Audio R in : 2Vrms Pin 3 Audio L out : 2Vrms Pin 3 Audio L out : 2Vrms Pin 4 GND Pin 4 GND Pin 5 GND Pin 5 GND Pin 6 Audio L in : 2Vrms Pin 6 Audio L in : 2Vrms Pin 7 Blue out/C in Pin 7 Blue in/C out

Pin 8 function switching out <2V : TV Pin 8 function switching in<2V : DVD

Pin 9 GND Pin 9 GND Pin 10 not connected Pin 10 not connected Pin 11 Green out:0.7Vpp ±0.1V into 75 Ohm *1 Pin 11 Green in:0.7Vpp ±0.1V into 75 Ohm Pin 12 not connected Pin 12 not connected Pin 13 GND Pin 13 GND Pin 14 GND Pin 14 GND Pin 15 Red/C out Pin 15 Red/C in

Pin 16 fast switching out <0.4V into 75 Ohm=CVBS/S-Video Pin 16 fast switching in <0.4V into 75 Ohm=CVBS/S-Video 1</<3 into 75 Ohm=RGB 1</<3 into 75 Ohm=RGB Pin 17 GND Pin 17 GND Pin 18 GND Pin 18 GND Pin 19 CVBS/Y out : 1Vpp ±0.1V *1 Pin 19 CVBS/Y out : 1Vpp ±0.1V *1 Pin 20 CVBS/Y in : 1Vpp ±0.1V *1 Pin 20 CVBS/Y in : 1Vpp ±0.1V *1 Pin 21 GND Pin 21 GND

Blue : 0.7Vpp ±0.1V into 75 Ohm *1 Blue : 0.7Vpp ±0.1V into 75 Ohm *1 C : 300mVpp ±30 into 75 Ohm *2 C : 300mVpp ±30 into 75 Ohm *2

>5/<8 : asp.ratio 16 : 9 DVD/AUX >5/<8 : asp.ratio 16 : 9 AUX >9.5/<12 : asp.ratio 4 : 3 DVD/AUX >9.5/<12 : asp.ratio 4 : 3 AUX

Red : 0.7Vpp ±0.1V into 75 Ohm *1 Red : 0.7Vpp ±0.1V into 75 Ohm *1 C : 300mVpp ±30 into 75 Ohm *2 C : 300mVpp ±30 into 75 Ohm *2

*1 : 100% White *2 : Burst Level *3 : color bar(chroma level : 75%)

What are "regional codes"?

Motion picture studios want to control the home release of movies in different countries because theater releases arenit simultaneous (a movie may come out on DVD in the US when itis just hitting screens in Europe). Therefore they have required that the DVD standard include codes which can be used to lock out the playback of certain discs in certain geo-graphical regions. Players sold in each region will have that regionis code built into the player. The player will refuse to play these "region coded" discs which are not allowed in the region. However, regional codes are entirely optional. Discs without codes will play on any player in any country. Some studios have already announced that only their new releases will have regional codes. There are six regions:

1. United States and Canada 2. Europe and Japan

3. Far East (except Japan & China) 4. South America and Oceania

5. Africa and the Middle East 6. China (except Hong Kong)

1 2

Map of DVD Regions

1-2

3. INFORMATIONS

REGION CODE

VERSION REGION CODE COUNTRY /FXX 2 JAPAN /KXX 6 CHINA /NXX 2 EUROPE /SXX 3 SINGAPORE/HONGKONG /UXX 1 USA/CANADA

THE DISCS THAT THE DV7000 CAN HANDLE

The following discs can be played back with a DV7000.

disc mark playback capability size side

DVD Audio/Video

CD Audio

VCD Audio/Video single

Note: The regional code of the discs must meet to the regional

code of the DV7000.

12 cm

8 cm

12 cm

8 cm

12 cm

8 cm

single/double

single

Multi-angles:

On some DVDs, scenes have been filmed from different angles (up to a maximum of 9). On these discs, you can select the angle that you want to watch. Please refer to the DVD's manual to see which scenes have multi-angles.

Cancelling password for parental press the DIMMER button and hold for 10 seconds while the player is stopped.

DVD INFORMATION

Below is a glossary of the new terms related to DVD.

Title:

A disc may have more than one story/movie on it, so each

story/movie is called a For example, if there are 2 movies on the disc, they are

separated into Title 1 and Title 2.

Chapter:

A title may also be separated into chapters. For example, a movie (title) may be separated into 3 scenes (chapters).

Title 1 Title 2

Chapter1Chapter

Subtitles:

DVDs are recorded with up to 32 different subtitle languages. If a disc has more than one subtitle language, you can select the subtitle language that you want to read.

"title".

Chapter3Chapter1Chapter2Chapter

Soundtrack language:

DVDs are recorded with up to 8 different soundtrack languages. If a disc has more than one language, you can select the soundtrack language that you want to listen to.

1-3

4. SERVICING HINT

SERVICE HINTS

SERVICE TOOLS

Audio signals disc 4822 397 30184 Disc without errors (SBC444)+ Disc with DO errors, black spots and fingerprints (SBC444A) 4822 397 30245 Disc (65 min 1kHz) without no pause 4822 397 30155 Max. diameter disc (58.0 mm) 4822 397 60141 Torx screwdrivers

Set (straight) 4822 395 50145

Set (square) 4822 395 50132 13th order filter 4822 395 30204 DVD test disc (PAL) 4822 397 10131 DVD test disc (NTSC) ALMEDIO TDV-540

1-4

5. DISASSEMBLY

1. Open the tray and remove the escutcheon (050B). REMARK : If the tray doesn't work, put a small

screwdriver into the hole as shown in picture and slide the knob. Then the tray comes out. After the first centimeter it is possible to pull the tray out by hand. (see fig.1)

2. Remove 6 screws and remove the top cover.

3. Remove a top right side screw on the power supply PCB

and remove the GND lug wire.

4. Remove 3 connectors of the wire harness from (or to )

front panel assembly.

5. Remove 2 screws of left and right side of the front panel

assembly.

6. Remove the front panel assembly.

7. Remove the retainer on the DVD mechanism.

8. Remove FFC and wire harness from the DVD main PCB

which mounted under the DVD mechanism.

9. Remove 4 screws and remove DVD mechanism module.

Fig. 1

1-5

6. REPLACEMENT OF PRINCIPAL COMPONENTS

6-1. Removal of the TRAVERSE MECHA.

6-1-1. Removal of the MECHANISM BLOCK

1) Turn the unit eject the DISC TRAY.

2) Disconnect the power cord and remove the DISC CLAMPER BLOCK.

3) Completely remove the DISC TRAY by pulling it outwards while pulling up both of the stopper tabs alternately.

's power on and press the "EJECT" button to

6-1-2. Removal of the TRAVERSE MECHA.

1) Remove the four b screws on the MAIN PCB and then disconnect the P800 connector on the MAIN PCB.

B SCREW

Fig. 6-3

2) Short the laser diode protection circuit on the PICK UP BLOCKÕs flexible cable with solder as shown.

STOPPER TUB

Fig. 6-1

4) Disconnect the two flat cables from the P803 connectors and one flat cable from the P808 connector on the MAIN PCB.

5) Disconnect the P807 connector on the MAIN PCB.

6) Remove the four a retaining screws and remove the MECHANISM BLOCK from the chassis.

P200

Fig. 6-4

Caution

To protect the laser diode from damage caused by high voltage static electricity, a laser diode protection circuit has to be shorted before disconnecting the flexible cable (P200 connector on the MECHANISM PCB). It is recommended that you put solder on the top of the soldering iron as shown in Fig. 3-5 then short the circuit at once. When you replace the TRAVERSE MECHA., be sure to connect the P200 connector before removing the solder at the shorted parts.

Fig. 6-2

A SCREW

SOLDER

Fig. 6-5

1-6

3) Carefully disconnect the two connectors (P500, P600) and the two flat cables (P200, P300) on the MECHANISM PCB.

6-3. Replacement of the PICK UP BLOCK

Replacement of the PICK UP BLOCK itself is not recommended because its azimuth adjustment is very critical and requires a special jig. If PICK UP BLOCK replacement is necessary, replace with an entire TRAVERSE MECHANISM only.

P600

P300

P500

P200

Fig. 6-6

4) Using tweezers, release the four retaining HOOKs of the TRAVERSE MECHA. from the rubber insulators being careful not to damage the rubber insulators.

Fig. 6-7

5) Remove the TRAVERSE MECHA. from the MECHANISM BLOCK.

6) Reassemble in the reverse order for installation. Never remove the solder on the flexible cable before connecting the P200 connector on the MECHANISM PCB.

6-2. Replacement of the SPINDLE MOTOR

Because the SPINDLE MOTOR position is very critical, jitter adjustment should be performed after replacement.

1) Disconnect the P300 connector on the MECHANISM PCB.

2) Insert a Philips type screw driver into the hole on the TURN TABLE of the SPINDLE MOTOR and remove the two screws.

1-7

7. SERVICE MODE

FLD, LED TEST

1. Press the mains switch (POWER BUTTON) while depressing the PAUSE button and STOP button.

2. Status will be on the TEST mode 1 and FL display shows <TEST 1>.

3. Press the NEXT button, then Standby LED will be light ON and FLD shows <LED 1>.

4. Press the NEXT button again, then Surround LED will be light ON and FLD shows <LED 2>.

5. Press the NEXT button again, then all segments of FLD will be light ON.

6. Press the NEXT button again, then each segments of FLD will be light ON by press by press. (17 forms)

7. Finally FLD shows <KEY 0 0 0 0>, it will be in “BUTTON (KEY) TEST MODE”.

8. If press some button on the front panel, FLD shows a code of that pressed button.

9. If press the PAUSE button and STOP button simultaneously while FLD shows <KEY 0 0 0 0>. The status will be in “REMOTE CONTROL TEST MODE” and FLD shows <RC6 000000>.

10.If press some button on the remote controller, FLD shows a code of that pressed button.

11.Press the NEXT button again, then the version number of the main microprocessor (IC600 on the DVD main PCB) will be shown on the FLD.

12.Press the NEXT button again, then the version number of the slave microprocessor (QF01 on the front PCB) will be shown on the FLD.

13.Press the NEXT button again, then the status will be #2. <TEST 1> mode. In case of finish the <TEST 1> mode, press the mains switch (POWER BUTTON).

How to EEPROM all clear

1. Press the mains switch (POWER BUTTON) while depressing the PLAY button and STOP button.

2. Status will be on the TEST mode 2 and FL display shows <TEST 2>. After a couple of seconds FL display shows <TEST2 OK>.

3. Press the PLAY button, PAUSE button and STOP button simultaneously.

4. FL display shows <TEST OK>, then power off the mains switch (POWER BUTTON). EEPROM should cleared.

1-8

Type version confirmation

1. Power ON the DVD player. The FL display must be shown <NO DISC>.

2. Pressing the

button and button simultaneously.

3. FL display shows product versions as follows.

DISPLAY VERSIONS

[ USA ] [ ]

EUROPE

[ HK S ‘PORE ]

[ CHINA ] [ J A PAN ]

[ NO REGION ]

/U1B, /U1G /N1B, /N1G /S1G

/K1B, /K1G /F1B, /F1N

Incorrect setup.

4. Release buttons. Then FL display shows <NO DISC> and status will be in usual mode.

Type Version setup

1. Press the mains switch (POWER BUTTON) while depressing the STOP button and SHUFFLE button.

2. The FL display shows <E2P ALL EUR> after a couple of seconds.

3. Type versions can be changed by pressing and

button.

button

[ E2P ALL EUR ]

[ E2P ALL USA ]

[ E2P ALL JPN ]

[ E2P ALL HK ]

[ E2P ALL CHN ]

[ E2P ALL AUS ]

VERSIONS DISPLAY /F1B, /F1N [ E2P ALL JPN ] /U1B, /U1G [ E2P ALL USA ] /N1B, /N1G [ E2P ALL EUR ] /S1G [ E2P ALL HK ] /K1B, /K1G [ E2P ALL CHN ] /A1B

(no release)

4. Memorize the version by pressing PLAY button.

5. The FL display shows <VERIFY OK> after a couple of seconds.

6. Power OFF the mains switch.

Press button

[ E2P ALL AUS ]

1-9

8. ELECTRICAL ADJUSTMENT

P807

TP201

TP120

VR120

VR121

P800

TP105

TP107

TP300

VR110

P804 P803

JITTER ADJ SCREW A

VR202

8-1. DVD JITTER ADJUSTMENT

1. Stick the provided small round sticker (0.1 mm thickness) at the innermost position of a DVD disc as shown and make a swayed DVD disc.

Signal recorded side

STICKER

Fig. 8-2

2. Play back the swayed DVD disc and press the F.F button repeatedly until the pickup block reaches the outermost position of its movable range. Next, press the PAUSE button.

3. Set the oscilloscope to the DC input mode and connect it to the TP201 (HOT) and the TP102 (D.GND) on the MAIN PCB.

4. Adjust the a screw and b screw alternately so that the AC and DC level of the waveform is minimum. (DC level should be less than 1.8 V, AC component should be minimum.)

JITTER ADJ SCREW B

Fig. 8-1

2. Set the oscilloscope to the DC input mode and connect it to the TP201 (HOT) and the TP102 (D.GND) on the MAIN PCB.

3. Adjust the VR202 so that the DC level is minimum. (The DC level should be less than 1.8 V)

8-3. CD TRACKING BALANCE

1. Set the VR110 at its center position prior to the adjustment.

2. Connect an oscilloscope to the TP150 (TE) on the MAIN PCB.

3. Play back an ordinary CD-disc and then set it to the PAUSE mode. If the play mode does not be engage, turn the VR110 at ±15 degrees. If the play mode does still not be engage even when the VR110 is turned at ±15 degrees, turn the VR110 at ± 30 degrees and try it again.

4. Observe the waveform and adjust it so that the level A of the waveform is the same as level B.

500mV

Fig. 8-4

minimum

Less than 1.8V

Fig. 8-3

NOTE: If the SPINDLE MOTOR is replaced, this jitter

adjustment should be performed for proper performance.

8-2. SLICE LEVEL ADJUSTMENT

1. Play back an ordinary DVD disc (single side, one layer) and press the F.F button repeatedly until the pickup block reaches almost the center position of its movable range.

1-10

8-4 AS Adjustment

CAUTION :

Do not see the laser pick-up! Cover the laser pick-up unit

while AS adjustment.

Adjustment point : VR120, VR121 Test point : TP107(+), TP120 (+) TP105 (GND) Equipment : Digital Multi Meter (DC voltage)

1. Press the mains switch (POWER BUTTON) while depressing the PLAY button and STOP button.

2. Status will be on the TEST mode 2 and FL display shows <TEST 2>. After a couple of seconds FL display shows <TEST2 OK>.

3. Press the and the status will be in AS adjustment mode.

4. Measure the DC voltage at the test point TP107.

5. Press the and the FL display shows <E3 00>.

6. Press the button again. Then the CD laser will light ON and the FL display shows <E3 01>.

7. Adjust the voltage at the test point TP120 by VR121, that the value must be same as TP107 (10mV) value measured on #4. process.

8. Press the light ON and the FL display shows <E3 00>.

9. Measure the DC voltage at the status DVD laser light ON. Adjust the voltage at that status 35mV (±10mV) lower than “CD laser light ON “ status by the trim resister VR120.

10.Press the status CD laser light ON. (DC voltage must be 35mV higher than the status DVD laser light ON.)

11.Power OFF the mains switch (POWER BUTTON).

button. Then the FL display shows <E3 02>

button again. Then the DVD laser will light ON

button twice of time. Then the DVD laser will

button again. Confirm the DC voltage at the

1-11