Marantz DV-7000 Service Manual

Service

Manual

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

F1B, /K1B, /N1B, /U1B

DVD Player

DVD PLAYER DV7000

	OPEN/CLOSE							DIMMER	STOP	PLAY
	A-B	REPEAT	SHUFFLE	SVCD	SCAN	CHAPTER	TITLE	TRACK
V I D E O	TITLE	DTS	CHAPTER	TRACK	PBC FTS	TOTAL	TRACK	TIME
STANDBY
POWER ON/OFF
								PAUSE	LEVEL	PHONES
	SURROUND			SHUFFLE	SCAN

TABLE OF CONTENTS
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
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

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

DV7000

R

DV7000

		383K855010 MIT
	Printed in Japan	3120 785 22300
		First Issue 2000.07

MARANTZ DESIGN AND SERVICE

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

	EUROPE / TRADING				BRAZIL
	MARANTZ EUROPE B.V.			PHILIP DA AMAZONIA IND. ELET. ITDA
	P.O.BOX 80002, BUILDING SFF2			CENTRO DE INFORMACOES AO
	5600 JB EINDHOVEN			CEP 04698-970
	THE NETHERLANDS			SAO PAULO, SP, BRAZIL
	PHONE : +31 - 40 - 2732241			PHONE : 0800 - 123123(Discagem Direta Gratuita)
	FAX : +31 - 40 - 2735578			FAX : [phone]

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

TECHNICAL AUDIO GROUP PTY, LTD 558 DARLING STREET,

BALMAIN, NSW 2041, AUSTRALIA

PHONE : 61 - 2 - 9810 - 5300

FAX : 61 - 2 - 9810 - 5355

CANADA

LENBROOK INDUSTRIES LIMITED 633 GRANITE COURT,

PICKERING, ONTARIO L1W 3K1 CANADA

PHONE : 905 - 831 - 6333

FAX : 905 - 831 - 6936

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

JAPAN Technical

MARANTZ JAPAN, INC.

35- 1, 7- CHOME, SAGAMIONO SAGAMIHARA - SHI, KANAGAWA JAPAN 228-8505

PHONE : [phone] FAX : [phone]

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

PAIYUING CO., LTD.

6 TH FL NO, 148 SUNG KIANG ROAD, TAIPEI, 10429, TAIWAN R.O.C. PHONE : +886 - 2 - 25221304

FAX : +886 - 2 - 25630415

SINGAPORE

WO KEE HONG (S) PTE LTD

WO KEE HONG CENTRE

NO.23, LORONG 8, TOA PAYOH

SINGAPORE 319257

PHONE : [phone]

FAX

: [phone]

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

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
	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)
Compact disc
(CD-DA, Video CD) .........................................	12 cm, 8 cm
Video system ....................................................	PAL (625/50) / NTSC (525/60)
Audio system ...................................................	Linear PCM audio
	MPEG 1/2 audio
	Dolby Digital (AC-3)
	DTS audio (Digital output only)
Video output
Line output level ..............................................	1.0 Vp-p / 75 ohms, unbalanced
	RCA pin Jack x 2
S1-output level .................................................	Y output: 1.0 Vp-p / 75 ohms unbalanced
	C output: 0.3 Vp-p / 75 ohms (PAL)
	0.286 Vp-p / 75 ohms (NTSC)
	4 pin mini DIN x 1
Color different output level ...............................	Y output: 1.0 Vp-p / 75 ohms unbalanced
	CB, CR output: 0.7 Vp-p / 75 ohms
	RCA pin Jack x 3 (/F1, /K1, /S1, /U1)
R/G/B output ....................................................	R/G/B output: 0.7 Vp-p 21-pin SCART connector x 2 (/N1B)
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)
	4 Hz-44 kHz (Fs = 96 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)
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)
	Wavelength: 790 nm (CD)
Power requirements ........................................	120V AC, 60 Hz (/U1)
	100V AC, 50 / 60 Hz (/F1)
	230V AC, 50 Hz (/N1)
	220V AC, 50 Hz (/K1)
	220 - 230V AC, 50 / 60 Hz (/S1)
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)
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

2.1Video performance (/N1 only)

	1	3	5	7	9	11 13 15 17 19
							21
	2	4	6		8 10 12 14 16 18 20
2. 1. 1 SCART
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
	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
Pin 8	function switching out <2V : TV							Pin 8	function switching in<2V : DVD
	>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
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
	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
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
	*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)

	5
1	2

		6
		2
5		3
4
	2	4

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	12 cm	single/double
				8 cm
CD			Audio	12 cm	single
				8 cm
				12 cm
VCD			Audio/Video		single
				8 cm

Note: The regional code of the discs must meet to the regional code of the DV7000.

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 "title".

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
Chapter	Chapter	Chapter	Chapter	Chapter	Chapter
1	2	3	1	2	3

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.

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.

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.

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

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.

A SCREW

SOLDER

Fig. 6-5

Fig. 6-2

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.

P200

P600 P300

P500

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 ]	/U1B, /U1G
[ EUROPE ]	/N1B, /N1G
[ HK S ‘PORE ]	/S1G
[ CHINA ]	/K1B, /K1G
[ J A PAN ]	/F1B, /F1N
.	Incorrect setup.
[ NO REGION ]

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 button and button.

[ E2P ALL EUR ]
	Press	button
[ E2P ALL USA ]
	Press	button
[ E2P ALL JPN ]
	Press	button	Press	button
[ E2P ALL HK ]
	Press	button
[ E2P ALL CHN ]
	Press	button
[ 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	[ E2P ALL AUS ]
	(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.

1-9

8. ELECTRICAL ADJUSTMENT

TP201 P807

	VR120	P800	P804	P803
	TP120
			TP105

TP107

VR121

TP300

VR110

	JITTER ADJ	JITTER ADJ
	SCREW A
		SCREW B

VR202

Fig. 8-1

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.)

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.

A

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 button. Then the FL display shows <E3 02> and the status will be in AS adjustment mode.

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

5. Press the button again. Then the DVD laser will light ON 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 button twice of time. Then the DVD laser will 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 button again. Confirm the DC voltage at 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).

1-11

9. WAVEFORM

Power requirements (Refer the circuit diagram page 1-25 and 1-26)
100V AC	120V AV	220V AC
1 50V 5µsec	1 50V 5µsec	1 100V 5µsec

2 10V 5µsec

2 10V 5µsec

2 10V 5µsec

3 5V

5µsec

3 5V

5µsec

3 5V

5µsec

4

0.1V 5µsec

4 0.1V 5µsec

4 0.1V 5µsec

1-12

1.10 WARNINGS

1-13

1-14

1.11 BLOCK DIAGRAM

1-15

1-16

1.12 SCHEMATIC DIAGRAM AND PARTS LOCATION

1-17

1-18

1-19

1-20