Sony HCD-NXM4D Schematic

HCD-NXM4D

SERVICE MANUAL

Ver. 1.2 2005.05

• HCD-NXM4D is the Amplifier, DVD player, tape deck and tuner section in DHC-NXM4D.

Model Name Using Similar Mechanism NEW

DVD DVD Mechanism Type CDM81A-DVBU60

Section Base Unit Name DVBU60

Optical Pick-up Name DBU-3

TAPE

Section

Model Name Using Similar Mechanism HCD-CPX22

SPECIFICATIONS

Main unit Amplifier section

The following measured at AC 120, 127, 220, 240 V, 50/60 Hz DIN power output (rated): 60 + 60 watts

(6 ohms at 1 kHz, DIN) Continuous RMS power output (reference) Front speaker: 75 + 75 watts

(6 ohms at 1 kHz, 10% THD) Center speaker: Surround speaker: 40 + 40 watts

Sub woofer: 120 watts

Inputs VIDEO/SAT IN (phono jacks):

MIC1/MIC2 (phone jacks): sensitivity 1 mV, impedance 10

Outputs VIDEO/SAT OUT (phono jacks):

VIDEO OUT (phono jack): max. output level

40 watts (6 ohms at 1 kHz, 10% THD)

(6 ohms at 1 kHz, 10% THD)

(4 ohms at 100 Hz, 10% THD)

voltage 250/450 mV, impedance 47

kilohms

voltage 250 mV, impedance 1 kilohm

1 Vp-p, unbalanced, Sync negative,

load impedance 75 ohms

S VIDEO OUT (4-pin/mini-DIN jack):

Y: 1 Vp-p, unbalanced, Sync negative, C: 0.286 Vp-p, load impedance 75 ohms

COMPONENT VIDEO OUT:

Y: 1 Vp-p, 75 ohms PB, PR: 0.7 Vp-p, 75 ohms

PHONES (stereo mini jack): accepts headphones of 8 ohms or

FRONT SPEAKER: Use only the supplied speaker

SS-NXM4D

SURROUND SPEAKER: Use only the supplied speaker

SS-RS400S

CENTER SPEAKER : Use only the supplied speaker

SS-CT400S

SUB WOOFER SPEAKER: Use only the supplied speaker

SS-WG4D

– Continued on next page –

9-877-971-03

DISPLAY SIDE Hi-Fi COMPONENT SYSTEM

Sony Corporation

Audio Group Published by Sony Engineering Corporation

HCD-NXM4D

Disc player section

System Compact disc and digital audio and

video system

Laser Semiconductor laser

(DVD: λ=650 nm, CD: λ=780 nm) Emission duration: continuous

Frequency response DVD (PCM 48 kHz):

2 Hz – 22 kHz (±1 dB) CD: 2 Hz – 20 kHz (±1 dB)

Video color system format Latin American model: NTSC

Other models: NTSC, PAL

Tape deck section

Recording system 4-track 2-channel stereo Frequency response 50 – 13,000 Hz (±3 dB), using Sony

TYPE I cassette

Tuner section

FM stereo, FM/AM superheterodyne tuner FM tuner section Tuning range 87.5 – 108.0 MHz (50 kHz step) Antenna FM lead antenna Antenna terminals 75 ohms unbalanced Intermediate frequency 10.7 MHz AM tuner section Tuning range Latin American models: 530 – 1,710 kHz

(with the interval set at 10 kHz) 531 – 1,710 kHz (with the interval set at 9 kHz)

Saudi Arabian models: 531– 1,602 kHz

(with the interval set at 9 kHz)

Other models: 531 – 1,602 kHz

(with the interval set at 9 kHz) 530 – 1,710 kHz

(with the interval set at 10 kHz) Antenna AM loop antenna Antenna terminals External antenna terminal Intermediate frequency 450 kHz

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of soldering iron around 270˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

CAUTION

Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.

This appliance is classified as a CLASS 1 LASER product. This label is located on the rear exterior.

General

Power requirements Australian model: 230 – 240 V AC, 50/60 Hz Saudi Arabian model: 120 – 127 V or 220 – 240 V AC,

50/60 Hz

Adjustable with voltage selector Thai model: 220 V AC, 50/60 Hz Other models: 120 V or 220 – 240 V AC, 50/60 Hz

Adjustable with voltage selector Power consumption 315 watts

Dimensions (w/h/d) Approx. 230 x 290 x 355 mm Mass Approx. 7.0 kg

Design and specifications are subject to change without notice.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

HCD-NXM4D

1. SERVICING NOTES

................................................ 4

2. GENERAL

Location of Controls ........................................................ 5

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 7

3-2. Case ................................................................................. 8

3-3. Back Panel ....................................................................... 8

3-4. DVD Section ................................................................... 9

3-5. Main Board ...................................................................... 10

3-6. Front Panel ...................................................................... 10

3-7. Front Amp Boardm Sur Amp Board ................................ 11

3-8. Tape Mechanism Deck .................................................... 12

3-9. Panel Board ..................................................................... 12

3-10. Video Board ..................................................................... 13

3-11. DMB07 Board, DVD Mechanism Deck

(CDM81A-DVBU60) ...................................................... 13

3-12. Tray .................................................................................. 14

3-13. Motor Board, M761 (LD/ST Motor),

M762 (BU U/D Motor) ................................................... 14

3-14. Base Unit (DVBU60) ...................................................... 15

3-15. RF Board ......................................................................... 15

3-16. Optical Pick-Up (DBU-3) ............................................... 16

4. TEST MODE .............................................................. 17

5. MECHANICAL ADJUSTMENTS ....................... 19

6. ELECTRICAL ADJUSTMENTS

Deck section .................................................................... 26

Video Section .................................................................. 27

7. DIAGRAMS

7-1. Circuit Board Location .................................................... 29

7-2. Block Diagram – DVD DSP (1/2) Section – .................. 31

7-3. Block Diagram – DVD DSP (2/2) Section – .................. 32

7-4. Block Diagram – Tuner/Tape Deck Section – ................ 33

7-5. Block Diagram – Main Section – ................................... 34

7-6. Block Diagram – Amp Section –.................................... 35

7-7. Printed Wiring Board – RF Board – ............................... 36

7-8. Schematic Diagram – RF Board – .................................. 37

7-9. Printed Wiring Board – DVD Mechanism Board – ....... 38

7-10. Schematic Diagram – DVD Mechanism Board – .......... 39

7-11. Printed Wiring Board – DMB07 Board (Side A) – ........ 40

7-12. Printed Wiring Board – DMB07 Board (Side B) – ........ 41

7-13. Schematic Diagram – DMB07 Board (1/6) – ................. 42

7-14. Schematic Diagram – DMB07 Board (2/6) – ................. 43

7-15. Schematic Diagram – DMB07 Board (3/6) – ................. 44

7-16. Schematic Diagram – DMB07 Board (4/6) – ................. 45

7-17. Schematic Diagram – DMB07 Board (5/6) – ................. 46

7-18. Schematic Diagram – DMB07 Board (6/6) – ................. 47

7-19. Printed Wiring Board – Video Board – .......................... 48

7-20. Schematic Diagram – Video Board – ............................. 49

7-21. Printed Wiring Boards – Main Board – .......................... 50

7-22. Schematic Diagram – Main Board (1/3) – ..................... 51

7-23. Schematic Diagram – Main Board (2/3) – ..................... 52

7-24. Schematic Diagram – Main Board (3/3) – ..................... 53

7-25. Printed Wiring Boards – Panel Board – ......................... 54

7-26. Schematic Diagram – Panel Board – ............................... 55

7-27. Printed Wiring Board – Disc SW, Vol, HP Board – ....... 56

7-28. Schematic Diagram – Disc SW, Vol, HP Board – .......... 57

7-29. Printed Wiring Board – Front Amp Board – .................. 58

7-30. Schematic Diagram – Front Amp Board – ..................... 59

7-31. Printed Wiring Board – SURAmp Board – .................... 60

7-32. Schematic Diagram – SUR Amp Board – ...................... 61

7-33. IC Block Diagram ........................................................... 63

8. EXPLODED VIEWS

8-1. Case, Rear Panel Section ................................................. 78

8-2. Front Panel Section ......................................................... 79

8-3. Chassis Section ................................................................ 80

8-4. DVD Mechanism Deck Section-1

(CDM81A-DVBU60) ..................................................... 81

8-5. DVD Mechanism Deck Section-2

(CDM81A-DVBU60) ..................................................... 82

8-6. DVD Mechanism Deck Section-3

(CDM81A-DVBU60) ..................................................... 83

8-7. Base Unit (DVBU60) ...................................................... 84

9. ELECTRICAL PARTS LIST ................................ 85

HCD-NXM4D

)

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.

LASER DIODE AND FOCUS SEARCH OPERATION CHECK

Carry out the “S curve check” in “CD section adjustment” and check that the S curve waveform is output several times.

•Abbreviation E2 : 120 V AC Area in E model E3 : 240 V AC Area in E model E15 : Iran model EA : Saudi Arabia model SP : Singapore model MY : Malaysia model AUS : Australian model TH : Thai model

• MODEL IDENTIFICATION – Back Panel –

PAR T No.

MODEL PART No.

SP, MY models 4-253-361-0[] E2 model 4-253-361-1[] E3, E15 model 4-253-361-2[] EA model 4-253-361-3[] AUS model 4-253-361-4[] TH model 4-253-361-5[]

• SERVICE POSITION FOR TAPE MECHANISM DECK

CN301

Jig (J-2501-270-A)

CN302

Jig (J-2501-271-A

tape mechanism deck

•NOTE ON CD/DVD MECHANISM DECK EXCHANGE

If CD/DVD mechanism deck is exchanged while the desk had gone into trays 2 or 3, since the address is memorized by the microprocessor, the set will not operate normally. In this case, please perform cold reset with reference to test mode (page 17.)

LOCATING THE CONTROLS

List of button locations and reference pages

Main unit

SECTION 2

GENERAL

HCD-NXM4D

This section is extracted from instruction manual.

ALPHA BETICAL ORDER

A – D E – Z

ALBUM +/– qa CD SYNC wg Deck A w; Deck B qg DIMMER wh DISC 1 – 5 3 Disc tray 9 DISPLAY wj Display window 4 DSGX qs DVD ea DVD MENU qa DVD TOP M

ENU

ECHO LEVEL qj MIC1/MIC2 jacks qh MIC LEVEL qk PHONES jack ql Remote sensor 2 SOUND MODE control wd SOUND SELECT control ws TAPE A/B wl TUNER/BAND e; TUNING +/– 0 VIDEO/SAT wk VOLUME c

12 3

ea e;

wl wk

wj wh wg wf

wd ws

ontrol

BUTTON DESCRIPTIONS

?/1 (power) 1 nN (play) 5 X (pause) 6 x (stop) 7 DVD Z (open/close) 8 .m/M> (rewind/fast

forward, go back/go forward)

TAPE Z B (eject) qf A TA PE Z (eject) wa

z START (record) wf

5 6 7 8 9

0 qa

qs qd

qhqjqk

HCD-NXM4D

Remote control

This section is extracted from instruction manual.

ALPHABETICA L ORDER

A – E

ALBUM + 7 ALBUM – qa ANGLE qk AUDIO qk BAN D wg CLEAR wl CLOCK/TIMER SELECT e;

CLOCK/TIMER SET e; DISC SKIP wf DISPLAY wa DVD DISPLAY wh DVD MENU 7 DVD SETUP ws

DVD TOP MENU qa ENTER wj

F – Z

FM MODE 5 FUNCTION +/– 0

KARAOKE/MPX qf Number buttons qd PLAY MODE 4

REPEAT 5 SLEEP qh SOUND FIELD +/– wd SUBTITLE qk TUNER MEMORY 3 TUNING MODE 4 TUNING +/– wk TV CH +/– qg TV/VIDEO ea TV VOL +/– 2 VOLUME +/– 8

BUTTON DESCRIPTIONS

?/1 (power) 1 nN (play) 6 X (pause) 6 x (stop) 6

KEY CONTROL

#/2 9

>10 qs TV ?/1 qj

O RETURN ql m (rewind) w; M (fast forward) w;

SLOW /y w; M/m/</, wj

. (go back) wk > (go forward) wk

wl wk

wj wh wg

+–+

–

+–+

–

+–

mM.>

XbB

–

ql w;

+–

mM.>

XbB x

+–

–

2qg

3 4 5

6 7

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

3-2.CASE

(Page 8)

3-3.BACK PANEL

(Page 8)

3-4.DVD SECTION

(Page 9)

HCD-NXM4D

SECTION 3

DISASSEMBLY

3-5.MAIN BOARD

(Page 10)

3-6.FRONT PANEL

(Page 10)

3-7.FRONT AMP BOARD,

SUR AMP BOARD (Page 11)

3-8.TAPE MECHANISM

DECK

(Page 12)

3-9.PANEL BOARD

(Page 12)

3-10.VIDEO BOARD

(Page 13)

3-11. DMB07 BOARD,

DVD MECHANISM DECK (CDM81A-DVBU60) (Page 13)

3-12. TRAY

(Page 14)

3-13. MOTOR BOARD,

M761 (LD/ST MOTOR), M762 (BU U/D MOTOR) (Page 14)

3-14. BASE UNIT (DVBU60)

(Page 15)

3-15. RF BOARD

(Page 15)

3-16. OPTICAL PIC-UP

(DBU-3)

(Page 16)

HCD-NXM4D

)

Note: Follow the disassembly procedure in the numerical order given.

3-2. CASE

three

(CASE 3 TP2)

screws

CASE

two

screws

(sumitite (B3))

screw

(sumitite (B3))

three

(CASE 3 TP2)

screws

two

screws

(sumitite (B3)

3-3. BACK PANEL

back panel section

CNP204

(+BVTP 3X8)

connector

(CN506)

two

screws

two

screws

(+BVTP 3X8)

four

screws

(+BVTP 3X8)

two

screws

(+BVTP 3X8)

screw

(+BVTP 3

3-4. DVD SECTION

two

screws

(sumitite (B3))

CNP200

CNP202

CNP372

screw

(+BVTP 3

connector

(CN102)

)

DVD sectio

HCD-NXM4D

3-5. MAIN BOARD

MAIN board

two

screws

(sumitite (B3))

CNP109

CNP110

CNP112

connector

(CN103)

connector

(CN101)

CNP303

connector

(CN108)

connector

(CN301)

3-6. FRONT PANEL

connector

(CN302)

connector

(CN102)

connector

(CN102)

connector

(CN505)

front panel section

two

screws

(+BVTP 3X8)

3-7. FRONT AMP BOARD, SUR AMP BOARD

)

screw

(+BVTP 3

two

screws

(+BVTP 3X8)

screw

(+BVTP 3

)

FRONT AMP board

connector

(CN507)

HCD-NXM4D

)

SUR AMP board

connector

(CN503)

bracket

two

screws

(+BVTP 3

bracket

screw

(+BVTP 3X8)

two

screws

(+BVTP 3X8)

two

screws

(sumitite (B3))

screw

(+BVTP 3X8)

connector

(CN502)

two

screws

(sumitite (B3)

HCD-NXM4D

)

3-8. TAPE MECHANISM DECK

two

screws

(+BVTP 2.6X8)

tape mechanism dec

3-9. PANEL BOARD

two

screws

(+P 2.6X3)

screw

(+BVTP 2.6X8)

three

(+BVTP 2.6X8)

screws

screw

(+BVTP 2.6X8)

bracket (main)

screw

(+BVTP 2.6X8)

PANEL board

four

screws

(+BVTP 2.6X8

3-10. VIDEO BOARD

screw

(+BVTP 3

)

CNP1101

VIDEO boar

screw

(+BVTP 3

HCD-NXM4D

)

3-11. DMB07 BOARD, DVD MECHANISM DECK (CDM81A-DVBU60)

screw

(+BVTP 3

)

DVD mechanism dec

(CDM81A-DVBU60)

two

screws

(+BVTP 3

)

DMB07 board

screw

(+BVTP 3

CNP105

two

screws

(+BVTP 3

)

screw

(+BVTP 3

)

screw

(+BVTP 3

CNP501

)

CNP107

screw

(+BVTP 3

)

HCD-NXM4D

)

3-12. TRAY

two

screws

(+BTP 2.6X8)

tray

bracket

two

screws

(+BTP 2.6X8

3-13. MOTOR BOARD, M761 (LD/ST MOTOR), M762 (BU U/D MOTOR)

screw

(+BTP 2.6X8)

bracket

Remove soldering from the two points.

M762 (BU U/D MOTOR)

screw

(+BTP 2.6X8)

MOTOR board

Remove soldering from the two points.

M761 (LD/ST MOTOR)

3-14. BASE UNIT (DVBU60)

base unit (DVBU60)

two floating

(+PTPWH2.6)

screw

HCD-NXM4D

3-15. RF BOARD

RF board

screw

(+BTP 2.6X6)

screw

CNP101

HCD-NXM4D

3-16. OPTICAL PICK-UP (DBU-3)

step

insulator

screw

step

insulator

optical pick-up

(DBU-3)

screw

two

screws

(+BTP 2.6

insulator

holder (DBU1) assy

screw

)

(+BTP 2.6

)

SECTION 4

TEST MODE

HCD-NXM4D

[Change-over of AM Tuner Step between 9 kHz and 10 kHz]

•A step of AM channels can be changed over between 9 kHz and 10 kHz.

Procedure:

1. Press

button to turn the set ON.

?/1

2. Select the function “TUNER”, and press [TUNER/BAND]

button to select the BAND “AM”.

3. Press

4. Press x button continuously, then press

button to turn the set OFF.

?/1

button. The

set will POWER on automatically, and the display of fluorescent indicator tube changes to “AM 9 kHz step” or “AM 10 kHz step”, and thus the channel step is changed over.

[Cold Reset]

• The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer.

Procedure:

Press x button continuously, then press [DIMMER]

buttons

and

?/1

[Switching MD/VIDEO Functions]

Procedure:

1. Press the

2. Press the

button to turn the set ON.

?/1

button while holding the VIDEO/SAT button

?/1

depressed to toggle between “SAT” and “VIDEO.” The selected mode is displayed.

[Aging Mode]

This mode can be used for operation check Tape deck section.

• If an error occurred: The aging operation stops and is displayed status.

• If no error occurs: The aging operation continues repeatedly

Aging mode in Tape Deck section

Procedure:

1. Load the tapes into the decks A and B respectively.

2. Press

button on the set ON

?/1

3. Select the function “TAPE A”

4. Press x button continuously, then press X and [TAPE A/B]

buttons. and aging mode is started.

5. To exit from the aging mode perform [Cold Reset].

[GC Test Mode]

• All fluorecent segments and LEDs are tested.

• Microprocessor virsion.

• Keyboard and jog check.

• Display check.

Procedure:

1. To enter the test mode, press x button coutinuously, then press X and [TUNER/BAND] buttons.

2. All segments and LEDs (without STANDBY LED) are turned on.

3. Press the [TUNING -] button to increment the microprocessor software version.

4. Press the [TUNING -] button to change the indication for the microprocessor software version.

3. Press the b B button to set the check mode for the entries (KEY, JOG, etc.).

4. Press the X button to display the current VACS level.

7. Press the x button to enter the mode to check the display. If you press this button repeatedly, the display will change sequentially as the button is pressed.

8. Press x button coutinuously, then press X and [TUNER/BAND] buttons.

[MC Test Mode] (Amplifier SECTION)

• This mode is used to test the function of the amplifier section.

Procedure:

1. Press

2. To enter the test mode, press x button coutinuously, then press X and z START buttons.

button to turn the set ON.

?/1

3. Turn [VOLUME] knob to counter-clockwise, the function of the equalizer is set to “MIN”.

4. Turn [VOLUME] knob to clockwise, the function of the equalizer is set to “MAX”.

5. Whenever turn [SOUND MODE] knob to clockwise, the display switches as follows.

“TONE MAX” t“TONE MIN” t“TONE FLAT”

6. Press [DSGX] button to select DBFB ON or OFF.

7. To exit from this mode, press

button to turn the set

?/1

OFF.

8. Press

9. To enter the test mode, press x button coutinuously, then press X and z START buttons.

button to turn the set ON.

?/1

10. Select SOUND FIELD mode by turn the SOUND MODE knob.

11. Change the speaker output by turn the SOUND SELECT knob.

• In the aging mode ,the program is executed in the following sequence.

Step Operation Display

1 Rewind the TAPE A TAPE A AG-1

2 Rewind the TAPE B TAPE B AG-1

3 Play the TAPE A (t) (2 minute) TAPE A AG-2

4 F•F. (AMS) the TAPE A TAPE A AG-3

5 Play the TAPE A (T) (2 minute) TAPE A AG-4

6 Rewind the TAPE A TAPE A AG-5

7 Play the TAPE B (t) (2 minute) TAPE B AG-2

8 F•F.(AMS) the TAPE B TAPE B AG-3

9 Play the TAPE B (T) (2 minute) TAPE B AG-4

10 Rewind the TAPE B TAPE B AG-5

[MC Test Mode] (Tape section)

• This mode is used to test the functions of the Tape Section.

Procedure:

1. Press

2. To enter the test mode, press x button coutinuously, then press X and z START buttons.

button to turn the set ON.

?/1

3. While holding the [DIMMER] button depressed, turn the ALC ON.

4. Press the z START button to start REC (recording).

5. While recording, press the [TUNING +] button to perform automatic rewind and automatic playback (for FF version). Also, press the [TUNING -] button to perform automatic rewind and automatic playback (for FR version).

6. Select the function “TAPE A” or “TAPE B”

HCD-NXM4D

7. Press the [CD SYNC] button while “TAPE A” or “TAPE B” is selected, to perform AMS check. “EDG[ ]” is displayed. A number appears inside[ ].

8. To exit from this mode, press ^/1 button to turn the set OFF.

[DVD Ship Mode (LOCK) ]

• This mode moves the pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.

Procedure:

1. Press ^/1 button to turn the set ON.

2. Select the function “DVD”.

3. Press x button and [DVD] button simultaneously.

4. The “STANDBY” display blinks instantaneously, and the DVD ship mode is set.

5. To fluorescent indicator tube displays ‘‘LOCK’’.

[DVD Ship (LOCK) & COLD RESET MODE]

Procedure:

1. Press ^/1 button to turn the set ON.

2. Select the function “DVD”.

3 Press x button continuously, then press X and VIDEO/SAT

buttons.

4. The “STANDBY” display blinks instantaneously and DVD ship mode is set.

5. To fluorescent indicator tube displays “LOCK” and the set is reset.

[DVD Repeat 5 Times Limit Release Mode]

Procedure:

1. Press ^/1 button to turn the set ON.

2. Select the function “DVD”.

3. Press x button continuously, then press [CD SYNC]

button.

4. The message “LIMIT OFF” is displayed.

5. Press ^/1 button to the set OFF.

[DVD power -manage function]

• This mode let you switch on or off power supply to the BU during TUNER function.

• When DVD POWER is set to OFF, the power supply to the BU is cut off during TUNER function. It will increase the time taken to access DVD when function change from TUNER to DVD but it will improve tuner reception.

• When DVD POWER is set to ON, the power supply to the BU is not cut off during TUNER function. It will reduce the time taken to access DVD when function change from TUNER to DVD but it will decrease tuner reception performance.

Procedure:

1. Press ^/1 button to the set ON.

2. Select the function “DVD”.

3. Press ^/1 button to turn the set OFF.

4. Press x button continuously, then press ^/1 button.The set

will POWER on automatically, and the display of fluorescent indicator tube changes “DVD POWER OFF” or “DVD POWER ON”.

5. Press ^/1 button to turn the set OFF.

[DISC Tray Lock]

Procedure:

1. Press ^/1 button to the set ON.

2. Select the function “DVD”.

3. Press x button continuously, then press DVD Z button for

5 seconds. And the displays of fluorescent indicator tube changes to “LOCKED” or “UNIOCKED”.

4. Press ^/1 button to turn the set OFF.

HCD-NXM4D

DVD OSD Test Mode

[GENERAL DESCRIPTION]

The Test Mode allows you to make diagnosis and adjustment easily using the remote commander and monitor TV. The instructions, diagnostic results, etc. are given on the on-screen display (OSD).

[STARTING TEST MODE]

1. Press the +/1 button to turn the power on, and set the function

to DVD.

2. While pressing the x and Z button, turn the [VOLUME]

knob clockwise to enter the test mode.

3. It displays “SERVICE IN” on the liquid crystal display, and displays the Test Mode Menu on the monitor screen as follows. (At the bottom of the menu screen, the model name and revision number are displayed)

Test Mode Menu

0. Syscon Diagnosis

1. Drive Auto Adjustment

2. Drive Manual Operation

3. Mecha Aging

4. Emergency History

5. Mecha Error History

6. Version Information

7. Video Level Adjustment Exit: POWER Key

Model :DHC-NXMxx Revision :x.xx

4. To execute each function, select the desired menu and press its number on the remote commander.

5. To release from test mode, press the +/1 button and turn the power off.

[OPERATING TEST MODE]

0. SYSCON DIAGNOSIS

The same contents as board detail check by serial interface can be checked from the remote commander operation. On the Test Mode Menu screen, press [10/0] key on the remote commander, and the following Check Menu will be displayed.

### Syscon Diagnosis ###

Check Menu

0. Quit

1. All

2. Version

3. EEPROM

4. GPIO

5. SD Bus

6. Video

0-0. Quit

Quit the Syscon Diagnosis and return to the Test Mode Menu.

0-1. All (All items continuous check)

This menu checks all diagnostic items continuously. Normally, all items are checked successively one after another automatically unless an error is found, but at a certain item that requires judgment through a visual check to the result, the following screen is displayed for the key entry.

• Example display

### Syscon Diagnosis ###

Diag All Check

No.2 Version

2-3. ROM Check Sum

Check Sum = xxxx

Press NEXT Key to Continue Press PREV Key to Repeat

For the ROM Check, the check sum calculated by the Syscon is output, and therefore you must compare it with the specified value for confirmation. Following the message, press the [NEXT ] button to go to the next item, or press the [ PREV] button to repeat the same operation again. To quit the diagnosis and return to Check Menu screen, press the [RETURN] key on the remote commander to display Check Menu.

• Error occurred If an error occurred, the diagnosis is suspended and error is displayed. Press the [RETURN] key on the remote commander to quit the diagnosis, or press the [ PREV] button to repeat the same check where an error occurred, or press the [NEXT ] button to continue the check from the item next to faulty item.

General Description of Checking Method

Selecting 2 and subsequent items calls the submenu screen of each item. And selecting 2 and subsequent items executes respective menus and outputs the results. For the contents of each submenu, see “Check Items List” as below.

Check Items List:

0-2. Version

0-2-1. All 0-2-2. Revision 0-2-3. ROM Check Sum 0-2-4. Model Type 0-2-5. Region

0-3. EEPROM Check

0-3-1. Sampling Check

0-3-2. Detail Check 0-4. GP I/O Check 0-5. SD Bus Check 0-6. Video Check

0-2. Version

0-2-2. Revision

The revision number of ROM (IC206) that the program for the DVD system processor (IC207) is stored.

0-2-3. ROM Check Sum

Check sum is calculated. (4 digits hexadecimal number)

0-2-4. Model Type

Model name is displayed. (DHC-NXMXX)

HCD-NXM4D

0-2-5. Region

Model destination code is displayed. (2 digits number)

0-3. EEPROM Check

0-3-1. Sampling Check

EEPROM check at every 64 words. It compares read data with write data of each address. When there are discrepancies between two data, it displays error.

0-3-2. Detail Check

EEPROM check at every 1 word. It compares read data with write data of each address. When there are discrepancies between two data, it displays error.

0-4. GP I/O Check

Pull up/down setting check of the DVD system processor (IC207) pin 150, 151 and 154 (for clock setting port).

0-5. SD Bus Check

SD bus data check between DVD decoder (IC701) and D-RAM (IC706).

0-6. Video Check

Output the color bars for video level adjustment.

1. DRIVE AUTO ADJUSTMENT

On the Test Mode Menu screen, press the [1] key on the remote commander, and the Adjustment Menu will be displayed.

•Use DVD reference disc unless othermise indicated. [DVD reference disc]

• LUV-P01 (4-999-032-01) (CD)

•TDV-540C (J-2501-235-A) (DVD-DL)

• TDV-520CSO (J-2501-236-A) (DVD-SL)

## Drive Auto Adjustment ##

Adjustment Menu

Note: During adjustment of each disc, the measurement for disc type judg-

ment is made. As automatic adjustment does not judge the disc type unlike conventional models, take care not to insert wrong type discs. Also, do not give a shock during adjustment.

1-1. DVD-SL (single layer)

Press the [1] key on the remote commander and insert a DVD single layer disc following the message. Then the adjustment will be made through the steps below, then adjusted values will be written to the EEPROM.

DVD Single Layer Disc Adjustment Steps:

1. Sled reset

2. Disc check memory SL

3. Wait 300 msec

4. Set disc type SL

5. LD on

6. Spindle start

7. Wait 1 sec

8. Focus servo on 0

9. Auto track offset adjust

10. CLVA on

11.Wait 500 msec

12. Tracking on

13. Wait 1 sec

14. Sled on

15. Check CLV on

16. Auto focus offset adjust

17. Auto focus gain adjust

18. Auto focus offset adjust

19. EQ boost adjust

20. Auto track gain adjust

21. All servo stop

22. EEP copy loop filter offset

1-2. CD

Press the [2] key on the remote commander and insert a CD disc following the message. Then the adjustment will be made through the steps below, then adjusted values will be written to the EEPROM.

0. ALL

1. DVD-SL

2. CD

3. DVD-DL

Exit: RETURN

Normally, [10/0] is selected to adjust DVD (single layer), CD and DVD (dual layer) in this order. But, individual items can be adjusted for the case where adjustment is suspended due to an error. In this mode, the adjustment can be made easily through the operation following the message displayed on the screen. The disc used for adjustment must be the one specified for adjustment.

1-0. ALL

Press the [10/0] key on the remote commander, and the servo set data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD disc and 3. DVD-DL disc are adjusted in this order. Each time one disc was adjusted, it is ejected. Replace it with the specified disc following the message. You can finish the adjustment by pressing the [RETURN] button on the remote commander.

CD Adjustment Steps

1. Sled tilt rest

2. Disc check memory CD

3. Wait 500 msec

4. Set disc type CD

5. LD on

6. Spindle start

7. Wait 500 msec

8. Focus servo on 0

9. Auto track offset adjust

10. CLVA on

11.Wait 500 msec

12. Tracking on

13. (TC display start)

14. Wait 1 sec

15. Sled ON

16. Check CLV on

17. Auto focus offset adjust

18. Auto focus gain adjust

19. Auto focus offset adjust

20. EQ boost adjust

21. Auto track gain adjust

22. All servo stop

HCD-NXM4D

1-3. DVD-DL (dual layer)

Press the [3] key on the remote commander and insert a DVD dual layer disc following the message. Then the adjustment will be made through the steps below, then adjusted values will be written to the EEPROM.

DVD Dual Layer Disc Adjustment Steps:

1. Sled tilt reset

2. Disc check memory DL

3. Wait 500 msec

4. Set disc type DL

5. LD on

6. Spindle start

7. Wait 1 sec

Layer 1 Adjust

8. Focus servo on 0

9. Auto track offset adjust

10. CLVA on

11.Wait 500 msec

12. Tracking on

13. Wait 500 msec

14. Sled on

15. Check CLV lock

16. Auto loop filter offset adjust, Auto focus adjust

17. Auto focus gain adjust

18. Auto focus offset adjust

19. EQ boost adjust

20. Auto loop filter offset adjust

21. Auto Track Gain Adjust

Layer 0 Adjust

22. Focus jump (L1 t L0)

23. Auto track offset adjust L0

24. CLVA on

25. Wait 500 msec

26. Tracking on

27. Wait 500 msec

28. Sled on

29. Check CLV lock

30. Auto Focus Adjust

31. Auto focus gain adjust

32. Auto focus offset adjust

33. EQ boost adjust

34. Auto track gain adjust

35. All servo stop

2. DRIVE MANUAL OPERATION

Note: This mode is used for design, and not used in service fundamen-

tally.

In using the manual operation menu, take care of the following points. These commands do not provide protection, thus requiring correct operation. The sector address or time code field is displayed when a disc is loaded.

Note:

1. Set correctly the disc type to be used on the Disc Type screen.

2. In case of an alarm, immediately press the x button to stop the servo operation, and press the +/1 button to turn the power off.

Basic operation:

(controllable from front panel or remote commander) +/1 : Power OFF (release the Test Mode) x : Servo stop Z : Stop and eject/Loading

[RETURN] : Return to Operation Menu or Test

[ PREV], [NEXT ] : Transition between sub modes of menu

[1] to [9], [10/0] : Selection of menu items Cursor o/O : Increase/Decrease in manually

Mode Menu

adjusted value

2-1. Disc Type

Disc Type

Disc Type Select

1. Disc Type Auto Check

2. Set Disc Type DVD

3. Set Disc Type CD

4. Set Disc Type Hybrid

Exit: RETURN

2-1-1. Disc Type Auto Check

1) Press the [1] key on the remote commander to display the Disc

Type Auto Check screen.

2) Insert a disc and press the [ENTER] key on the remote

commander.

3) It judges the type of inserted disc automatically and displays the disc type and so on as below.

On the Test Mode Menu screen, press the [2] key on the remote commander, and the Operation Menu will be displayed. For the manual operation, each servo on/off control and adjustment can be executed manually.

## Drive Manual Operation ##

Operation Menu

1. Disc Type

2. Servo Control

3. Track/Layer Jump

4. Non EEPROM Write Adjust

5. EEPROM Write Adjust

6. Memory Check

7. Disc Check Memory

8. Error Rate Display

9. SACD Water Mark

Exit: RETURN

Disc Type Auto Check

Disc Type xx Layer xx Mirr Time xx Mirr Count xx FZC Count xx PI Reference xx PI Peak xx

ENTER.Execute

Exit: RETURN

Disc Type : CD, DVD or Hybrid (SACD) Layer : SINGLE, DUAL or HYBRID Mirr Time : Mirror time of between disc surface and record

surface when disc type judgment. (hexadecimal number)

HCD-NXM4D

Mirr Count : The number of times which mirror

counts between disc surface and record surface when disc type judging.

FZC Count : The number of times which focus zero

cross points of each layer when lens down.

PI Reference : The average of PI reference voltage.

(hexadecimal number)

PI Peak : PI peak level voltage. It performs only

when disc type judgment is successful. (hexadecimal number)

2-1-2. Disc Type DVD It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.

[1]: DVD single layer disc (12 cm) [2]: DVD dual layer disc (0 layer, 12 cm) [3]: DVD dual layer disc (1 layer, 12 cm) [4]: DVD-RW disc (12 cm) [5]: DVD single layer disc (8 cm) [6]: DVD dual layer disc (0 layer, 8 cm) [7]: DVD dual layer disc (1 layer, 8 cm) [8]: DVD-RW disc (8 cm)

2-1-3. Disc Type CD It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.

[1]: CD disc (normal speed, 12 cm) [2]: CD disc (double speed, 12 cm) [3]: CD disc (normal speed, 8 cm) [4]: CD disc (double speed, 8 cm) [5]: CD-RW disc (normal speed, 12 cm) [6]: CD-RW disc (double speed, 12 cm) [7]: CD-RW disc (normal speed, 8 cm) [8]: CD-RW disc (double speed, 8 cm)

2-1-4. Disc Type Hybrid It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.

[1]: SACD Hybrid disc (SACD layer, 12 cm) [2]: SACD Hybrid disc (CD layer, normal speed, 12 cm) [3]: SACD Hybrid disc (CD layer, double speed, 12 cm) [4]: SACD Hybrid disc (SACD layer, 8 cm) [5]: SACD Hybrid disc (CD layer, normal speed, 8 cm) [6]: SACD Hybrid disc (CD layer, double speed, 8 cm)

[1] LD : Turn on/off the laser. [2] Focus : Search the focus and turn on the focus. [3] SPDL : Turn on/off the spindle. [4] CLVA : Turn on/off normal servo of spindle servo. [5] Trk. : Turn on/off the tracking servo. [6] Sled : Turn on/off the sled servo. [7] FCS. Srch : Turn on/off the focus search. [10/1] : All servo off. [R] Sled FWD (right cursor) : Move the sled forward. [L] Sled REV (left cursor) : Move the sled reverse. [U] Sled FWD (up cursor) : Reset the sled. [D] Sled REV (down cursor) : Limit in the sled.

2-3. Track/Layer Jump

Track/Layer Jump

1. 1Tj FWD

2. 1Tj REV

3.500Tj Fine FWD

4.500Tj Fine REV

5.10kTj Dirc FWD

6.10kTj Dirc REV

7.20kTj Dirc FWD

8.20kTj Dirc REV

0. All Servo Off

Exit: RETURN

On this screen, track jump, etc. can be performed. Only for the DVD dual layer disc, the focus jump and layer jump are displayed in the right field

[1] 1Tj FWD : 1 track jump forward. [2] 1Tj REV : 1 track jump reverse. [3] 500Tj FWD : 500 track jump (fine search)forward. [4] 500Tj REV : 500 track jump (fine search) reverse. [5] 10kTj FWD : 10k track jump (direct search) forward. [6] 10kTj REV : 10k track jump (direct search) reverse. [7] 20kTj FWD : 20k track jump (direct search) forward. [8] 20kTj REV : 20k track jump (direct search) reverse. [10/0] : All servo off.

2-4. Non EEPROM Write Adjust

2-2. Servo Control

Note: Be sure to perform the disc type setup before performing this item.

Servo Control

1.LD off R.Sled FWD

2.Focus off L.Sled REV

3.SPDL off U.Sled Reset

4.CLVA off D.Sled Limit

5.Trk. off

6.Sled off

7.Fcs.Srch off

0.All Servo Off

Exit: RETURN

On this screen, the servo on/off control necessary for replay is executed. Normally, turn on each servo from 1 sequentially and when CLVA is turned on, the usual trace mode becomes active. In the trace mode, DVD sector address or CD time code is displayed. This is not displayed where the spindle is not locked. The spindle could run overriding the control if the spindle system is faulty or RF is not present. In such a case, do not operate CLVA.

Non EEPROM Write Adjust

1. Focus Offset

2. Focus Gain

3. Trk. Offset Coarse

4. Trk. Offset Fine

5. Trk. Gain

6. EQ Boost

0.All Servo Off

Exit: RETURN

On this screen, each item can be adjusted manually. Select the desired number [1] to [10/0] from the remote commander, and current setting for the selected item will be displayed, then increase or decrease numeric value with the O key or o key. If CLV has been applied, the jitter is displayed for reference for the adjustment.

[1] Focus Offset : Adjusts focus offset. [2] Focus Gain : Adjusts focus gain. [3] TRK. Offset coares :

Adjusts tracking offset of the RF amp (IC001) side.

[4] TRK. Offset fine :

Adjusts tracking offset of the DSP (IC401) side.

[5] TRK. Gain : Adjusts track gain. [6] EQ Boost : Adjusts amount of boost of equalizer. [10/0] : All servo off.

2-5. EEPROM Write Adjust

EEPROM Write Adjust

1. Focus Offset

2. Focus Gain

3. Trk. Offset Coarse

4. ——————

5. Trk. Gain

6. EQ Boost

HCD-NXM4D

EEPROM Data 2/2 CDRW DVDRW Focus Gain xx xx Trk. Gain xx xx Focus Offset xx xx Trk. Offset xx xx EQ. Boost xx xx

Prev:UP Default:CLR Exit:RET

On this screen, current servo adjusted data stored in the EEPROM are displayed. The adjusted data are initialized by pressing the [CLEAR] key, but be careful that they are not recoverable after initialization. Before clearing the adjusted data, make a note of the set data. This screen will also appear if [0]-All is selected in the Drive Auto Adjustment. In this case, default setting cannot be made.

0.All Servo Off

Exit: RETURN

On this screen, each item can be adjusted automatically. Select the desired number [1] to [10/0] from the remote commander, and selected item is adjusted automatically.

[1] Focus Offset : Adjusts focus offset. [2] Focus Gain : Adjusts focus gain. [3] TRK. Offset coarse :

Adjusts tracking offset of the RF amp (IC001) side.

[5] TRK. Gain : Adjusts track gain. [6] EQ Boost : Adjusts amount of boost of equalizer. [10/0] : All servo off.

2-6. Memory Check

Display images are shown as follows, and all two screens are able to switch by the O key (UP) or o key (DW).

EEPROM Data 1/2 CD SL L0 L1 Focus Gain xx xx xx xx Trk. Gain xx xx xx xx Focus Offset xx xx xx xx Trk. Offset xx xx xx xx EQ. Boost xx xx xx xx PI Level xx xx -- -Fcs. Balance -- xx -- -Jitter xx xx xx xx Mirror Time xx xx xx -FE Level -- xx -- -Traverse Lv1. -- xx -- -Next:DW Default:CLR Exit:RET

2-7. Disc Check Memory

Disc Check Memory

1. SL Disc check

2. CD Disc check

3. DL Disc check

Exit: RETURN

On this screen, measure the mirror time of chucked disc, and write to the EEPROM.

2-8. Error Rate Display

Error Rate Display

UC CR Address

PI1 Err Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx Avg xx xxxx

PI2 Err Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx Avg xx xxxx

PO Err Now xx xxxx xxxxxxxx

Max xx xxxx xxxxxxxx Avg xx xxxx

START: ENTER STOP: RETURN

On this screen, measure and display the error rate.

UC : Incorrect value CR : Correct value Add : Address

HCD-NXM4D

2-9. SACD Water Mark Check (Not used)

SACD Water Mark Check

PSP AMP PSN

Adjust Error Failed Start: ENTER Stop: RETURN

On this screen, measure the PSP AMP value and PSN value of SACD water mark.

3. MECHA AGING

On the Test Mode Menu screen, selecting [3] executes the aging of the mechanism deck.

## Aging Test MENU ##

Pls use over 40min. CD

1. Open/Close Test

1) On the Aging Test MENU screen, press the [1] key on the

remote commander to display the Open/Close Test screen.

2) Insert discs and press the [ENTER] key on the remote

commander.

3) Is starts the aging. During aging, the disc number, operating status and repeat cycle are displayed. Aging can be aborted at any time by pressing the [RETURN] key. After the operation is stopped, press the [RETURN] key to return to the Aging Test MENU.

Operation Menu

Exit: RETURN

4. EMERGENCY HISTORY

On the Test Mode Menu screen, selecting [4] displays the information such as servo emergency history. The history information from last 1 up to 10 can be scrolled with the O key or o key. Also, specific information can be displayed by directly entering that number with ten keys.

### EMG. History ###

Laser Hours CD xxxxhxxm

DVD xxxxhxxm

a. bb xx xx xx xx xx xx xx

xx xx xx xx xx xx xx xx

a. bb xx xx xx xx xx xx xx

xx xx xx xx xx xx xx xx

xxxxhxxm : The laser on total hours. Data below

minutes are omitted. a. : Error number. bb : Error code. xx : Not used.

• Clearing History Information

Clearing laser hours:

Press the [DVD DISPLAY] and [CLEAR] keys in this order. Then both CD and DVD data are cleared.

Clearing emergency history:

Press the [DVD TOP MENU] and [CLEAR] keys in this order.

Initializing set up data:

Press [DVD MENU] and [CLEAR] keys in this order. The data have been initialized when “EEPROM Initialize Finished” message is displayed.

• Code list of Emergency History 10 : Communication to RF AMP (IC001) failed. 11 : Each servo for focus, tracking, and spindle is unlocked. 12 : Check sum error of EEPROM (IC204). 14 : Communication to servo DSP (IC509) failed, or servo

DSP (IC509) is faulty.

15 : Communication to DVD decoder (IC701) failed, or DVD

decoder (IC701) is faulty.

16 : Communication to DSD decoder (IC801) failed, or DSD

decoder (IC801) is faulty. (Not used)

20 : Initialization of sled servo failed. It is not placed in the

initial position. 23 : Sled servo operation error. 24 : Made a request to move the sled servo to wrong position. 30 : Tracking balance adjustment error. 31 : Tracking gain adjustment error. 33 : Focus bias adjustment error. 34 : Focus gain adjustment error. 35 : Equalizer adjustment error. 40 : Focus servo does not operate. 41 : With a DVD dual layer disc, focus jump failed. 50 : CLV (spindle) servo does not operate. 51 : Spindle does not stop. 60 : Made a request to seek nonexistent address. 61 : Seek error of retry more than regulated times. 70 : Control data could not be read. 80 : Disc reading failed.

5. MECHA ERROR HISTORY

On the Test Mode Menu screen, selecting [5] displays the information of mechanism deck error history. The history information from last 1 up to 8 can be scrolled with the O key or o key.

### Mecha Error History ###

1. xx xx xx xx xx xx xx xx

2. xx xx xx xx xx xx xx xx

3. xx xx xx xx xx xx xx xx

4. xx xx xx xx xx xx xx xx

5. xx xx xx xx xx xx xx xx

6. xx xx xx xx xx xx xx xx

7. xx xx xx xx xx xx xx xx

8. xx xx xx xx xx xx xx xx

Scroll:UP/DOWN

(1.Latest Err.) Exit: RETURN

Select:1-9 Scroll:UP/DOWN (1.Latest EMG.) Exit: RETURN

HCD-NXM4D

aa: Initialization is completed or not.

FF : Complete. other number : Not complete. bb: Operating status of mechanism deck at an error occurred.

(lod sq jcp)

00 : Initializing.

10 to 15 : Open operating.

16 to 19 : Kicking cause open failed.

1A to 1F : Open operating.

20 to 27 : Complete the open operation.

28 : No disc and complete the open operation.

29 to 2F : Complete the open operation.

30 to 3F : Close requesting.

40 to 4F : Open requesting.

50 to 5F : Close operating.

60 to 6F : Complete the chucking operation.

80 to 8F : Complete the release operation.

(BU is home position) 90 to 9F : BU down operating. A0 to AF : Opening/closing the shutter. Or stationary state

in open/close the shutter is enablement. B0 to BF : BU up requesting. C0 to CF : BU down requesting. D0 to DF : BU upping. E0 to EF : No disc checking in disc loading.

cc : Operating status of table at an error occurred.

(tbl sq jcp) 13 : The rotation stop position determination error of a table 11 to 12 : The loading position determination error of a table

dd: Operating status of mechanism deck at an error occurred.

(lod OP jcp)

00 : Complete the operation. 10 to 1F : Open operating. 20 to 2F : Close operating. 30 to 3F : Release operating. 60 to 6F : Chucking operating. 70 to 7F : Kicking operating. 80 to 8F :

ee : The status of table operation. (“n” is unfixed)

(tbl op jcp) 1n : Rotating in the direction of a forward. 2n : Rotating in the direction of a reverse.

Returning the BU to home position. (after kicking)

6. VERSION INFORMATION

On the Test Mode Menu screen, selecting [6] displays the ROM version and region code. The parenthesized hexadecimal number in version field is checksum value of ROM.

## Version Information ##

IF con. Ver.x. xx

SYScon. Ver.x. xx (xxxx)

Model DHC-NXMXX Region 0x Config xxxxxxxx

xxxxxxxx

Front End Ver.x.xx

Exit: RETURN

IF con. : The version of system controller (IC501). SYScon. : The version of DVD system processor (IC207). Front End : The version of mechanism controller (IC901).

7. VIDEO LEVEL ADJUSTMENT

On the Test Mode Menu screen, selecting [7] displays color bars for video level adjustment. During display of color bars, OSD disappears but the menu screen will be restored if pressing the [RETURN] key.

HCD-NXM4D

SECTION 5

MECHANICAL ADJUSTMENTS

Precaution

1. Clean the following parts with a denatured alcohol-moistened swab:

record/playback heads pinch rollers erase head rubber belts capstan idlers

2. Demagnetize the record/playback head with a head

demagnetizer.

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to

the parts adjusted.

5. The adjustments should be performed with the rated power

supply voltage unless otherwise noted.

Torque Measurement

Mode Torque meter Meter reading

3.06 N • m to 6.96 N • m

FWD CQ-102C 31 to 71 g • cm

(0.43 – 0.98 oz • inch)

FWD

back tension

REV CQ-102RC 31 to 71 g • cm

REV

back tension

FF/REW CQ-201B 71 to 143 g • cm

FWD tension CQ-403A 100 g or more

REV tension CQ-403R 100 g or more

CQ-102C 2 to 6 g • cm

CQ-102RC 2 to 6 g • cm

0.19 N • m to 0.58 N • m

(0.02 – 0.08 oz • inch)

3.06 N • m to 6.96 N • m

(0.43 – 0.98 oz • inch)

0.19 N • m to 0.58 N • m

(0.02 – 0.08 oz • inch)

6.96 N • m to 14.02 N • m

(0.98 – 1.99 oz • inch)

9.80 N • m

(3.53 oz or more)

9.80 N • m

(3.53 oz or more)

SECTION 6

ELECTRICAL ADJUSTMENTS

DECK SECTION

1. Demagnetize the record/playback head with a head demagnetizer.

2. Do not use a magnetized screwdriver for the adjustments.

3. After the adjustments, apply suitable locking compound to the parts adjust.

4. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in this service manual. (As a general rule, playback circuit adjustment should be completed before performing recording circuit adjustment.)

6. The adjustments should be performed for both L-CH and RCH.

7. Switches and controls should be set as follows unless otherwise specified.

•Test Tape

Tape Signal Used for

P-4-A100 10 kHz, –10 dB Azimuth Adjustment

RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback

test tape P-4-A100 (10 kHz, –10 dB)

0 dB=0.775 V

MAIN board CN304

(L-CH)

(R-CH)

set

MAIN board CN304

(GND)

level meter

+ –

HCD-NXM4D

1.00 ± 0.05 Vp-p

(WHITE 100%)

2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.

Output level

within 1dB

L-CH peak

R-CH peak

within 1dB

Screw position

L-CH peak

Screw position

R-CH peak

3. Mode: Playback

test tape P-4-A100 (10 kHz, –10 dB)

L-CH

MAIN board CN301 set

R-CH

waveform of oscilloscope

oscilloscop

VIDEO SECTION

RE-ADJUSTMENT OF THE SERVO CIRUIT

The re-adjustment of the servo circuit is necessary when the part which relates to the servo circuit is replaced. Referring to “1. DRIVE AUTO ADJUSTMENT” (see page 20). Choose ALL and do the re-adjustment of each item of DVD-SL, CD and DVD-DL.

THE PART THAT THE RE-ADJUSTMENT OF THE SERVO CIRCUIT IS NECESSARY.

1. Optical pick-up

2. RF AMP (IC001)

3. DSP IC (IC509)

4. Motor driver IC (IC501)

5. EEPROM (IC204)

Note :

1. DBM07 board is basically designed to operate without adjustment. Therefore, check each item in order given.

2. Use DVD reference disc unless othermise indicated. [DVD reference disc]

• LUV-P01 (4-999-032-01) (CD)

•TDV-540C (J-2501-235-A) (DVD-DL)

• TDV-520CSO (J-2501-236-A) (DVD-SL)

3. Use an oscilloscope with more than 10MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

in phase 45°90°135°180

good

wrong

4. After the adjustments, apply suitable locking compound to the pats adjusted.

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

Video Level Check (DBM07 BOARD)

Purpose

This adjustment is made to satisfy the NTSC standard, and if not adjusted correctly, the brightness will be too large or small.

Oscilloscop

Ω

set

J1102 VIDEO OUTPUT

Procedure:

1. Connect oscilloscope to VIDEO output.

2. Load a DVD reference disc playback.

3. Check the video signal level is 1.00±0.05Vp-p.

reverse

forward

HCD-NXM4D

RFMON Level Check

Perform a RFMON level check before exchanging optical pick-up.

Connection:

oscilloscope

–RF board (side B) –

JL005

(RFMON)

RFMON signal waveform

C035

C012

JL005(RFMON)

C051

C036

C033

R031

C034

+ –

IC001

VOLT/DIV: 200 mV TIME/DIV: 500 ns

RFMON level

R013

• Standard value

DVD

Test Disc

TDV-520CSO

(J-2501-236-A)

LUV-P01

(4-999-032-01)

RFMON level

Standard Value

1.09±0.2Vp-p

1.05±0.2Vp-p

7-1. CIRCUIT BOARD LOCATION

PANEL board

DISC SW board

VOL board

HCD-NXM4D

SECTION 7

DIAGRAMS

SUR AMP board

MAIN board

switching regulato

SW(1) board

MOTOR board

HP board

FRONT AMP board

SW(2) board

RELAY board

VIDEO boar

SENSOR board

ENCODER board

RF board

DMB07 board

HCD-NXM4D

For schematic diagrams. Note:

• All capacitors are in µF unless otherwise noted. (p: pF) 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and specified.

W or less unless otherwise

• f : internal component.

• 2 : nonflammable resistor.

• 5 : fusible resistor.

Note: The components identified by mark 0 or dotted line

with mark ! are critical for safety. Replace only with part number specified.

• C : panel designation.

• A : B+ Line.

• B : B– Line.

• H : adjustment for repair.

•Voltages and waveforms are dc with respect to ground under no-signal conditions.

RF, DMB07, VIDEO boards section

no mark: DVD PLAY

Other board section

no mark: TUNER (FM/AM) ( ): DVD PLAY < >: TAPE REC [ ]: TAPE PLAY

* : Impossible to measure

•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal production tolerances.

•Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : TUNER (FM/AM) E : TAPE PLAY (DECK A) d : TAPE PLAY (DECK B) G : RECORD J : DVD PLAY N : MIC INPUT

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

•

: Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution: Parts face side: Parts on the parts face side seen from (Side A) the parts face are indicated. Pattern face side: Parts on the pattern face side seen from (Side B) the pattern face are indicated.

• Indication of transistor.

These are omitted.

• Abbreviation E2 : 120V AC Area in E model E3 : 240V AC Area in E model EA : Saudi Arabia mdoel E15 : Iran model SP : Shingapore model MY : Malaysia model AUS : Australian mdoel TH : Thai model

+ 84 hidden pages

Sony HCD-NXM4D Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual

SPECIFICATIONS

TABLE OF CONTENTS

SERVICING NOTES

GENERAL

3-1. DISASSEMBLY FLOW

DISASSEMBLY

3-2. CASE

3-3. BACK PANEL

3-4. DVD SECTION

3-5. MAIN BOARD

3-6. FRONT PANEL

3-7. FRONT AMP BOARD, SUR AMP BOARD

3-8. TAPE MECHANISM DECK

3-9. PANEL BOARD

3-10. VIDEO BOARD

3-11. DMB07 BOARD, DVD MECHANISM DECK (CDM81A-DVBU60)

3-12. TRAY

3-13. MOTOR BOARD, M761 (LD/ST MOTOR), M762 (BU U/D MOTOR)

3-14. BASE UNIT (DVBU60)

3-15. RF BOARD

3-16. OPTICAL PICK-UP (DBU-3)

7-1. CIRCUIT BOARD LOCATION

DIAGRAMS