Sony HMCNX-5-MD Service manual

HMC-NX5MD

SERVICE MANUAL

HMC-NX5MD is the CD player and MD Deck section in DHC-NX5MD

CD Section

MD Section

AEP Model

UK Model

E Model

Model Name Using Similar Mechanism NEW

CD Mechanism Type CDM53E-K4BD40

Base Unit Name Type BU-K4BD40

Optical Pick-up Name KSM-213DHAP/Z-NP

Model Name Using Similar Mechanism NEW

MD Mechanism Type MDM-7B

Optical Pick-up Name KMS-260B/J1N

CD player section

System Compact disc and digital audio

Laser Semiconductor laser

Laser output Max. 44.6 µW*

Wavelength 780 – 790 nm Frequency response 20 Hz – 20 kHz (±0.5 dB) Signal-to-noise ratio More than 90 dB Dynamic range More than 90 dB

MD deck section

System MiniDisc digital audio system Laser Semiconductor laser

Laser output Max. 44.6 µW*

Sampling frequency 44.1 kHz Fre

uency response 20 Hz – 20 kHz

system

(λ=780 nm) Emission duration: continuous

*This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture.

(λ=780 nm) Emission duration: continuous

*This output is the value measured at a distance of 200 mm from the objective lens surface on the Optical Pick-up Block with 7 mm aperture.

SPECIFICATIONS

General

Power requirements European models: 230 V AC, 50/60 Hz Other models: 120 V, 220 V or 230 – 240 V AC,

Power consumption European models: 190 watts Other models: 220 watts

Dimensions (w/h/d) Approx. 225 × 202 × 356 mm

Mass Approx. 4.3 kg

Supplied accessories: AM loop aerial (1)

Design and specifications are subject to change without notice.

MINI Hi-Fi COMPONENT SYSTEM

50/60 Hz Adjustable with voltage selector

Remote Commander (1) Batteries (2) FM lead aerial (1) Speaker cords (2) Front speaker pads (8)

SELF-DIAGNOSIS FUNCTION

The self-diagnosis function consists of error codes for customers which are displayed automatically when errors occur, and error codes which show the error history in the test mode during servicing. For details on how to view error codes for the customer, refer to the following box in the instruction manual. For details on how to check error codes during servicing, refer to the following “Procedure for using the SelfDiagnosis Function (Error History Display Mode)”.

Self-diagnosis Display

This system has a Self-diagnosis display function to let you know if there is a system malfunction. The display shows a code made up of three or five letters and a message alternately to show you the problem. To solve the problem refer to the following list. If any problem persists, consult your nearest Sony dealer.

C11/Protected

The MD is protected against erasure. cRemove the MD and slide the tab to close the

slot (page 27).

C12/Cannot Copy

You tried to record a CD or MD with a format that the system does not support, such as a CDROM.

cRemove the disc and turn off the system once,

then turn it on again.

C13/REC Error

Recording could not be performed properly. cMove the system to a stable place, and start

recording over from the beginning. The MD is dirty or scratched, or the MD does not meet the standards. cReplace the MD and start recording over from

the beginning.

C13/Read Error

The MD deck cannot read the disc information properly.

cRemove the MD once, then insert it again.

C14/Toc Error

The MD deck cannot read the disc information properly.

cReplace the MD. cErase all the recorded contents of the MD

using the All Erase function on page 44.

C41/Cannot Copy

The sound source is a copy of a commercially available music software, or you tried to record a CD-R (Recordable CD).

cThe Serial Copy Management System

prevents making a digital copy (see page 71).

You cannot record a CD-R.

E0001/MEMORY NG

There is an error in the internal data that the system needs in order to operate.

cConsult your nearest Sony dealer.

E0101/LASER NG

There is a problem with the optical pickup. cThe optical pickup may have failed. Consult

your nearest Sony dealer.

Messages

One of the following messages may appear or flash in the display during operation.

Auto Cut

The MD deck is pausing the recording because silence continued for about 30 seconds or more during digital recording.

Blank Disc

The inserted recordable MD is new, or all tracks on the MD have been erased.

Cannot Edit

• A pre-mastered MD is in the deck.

• You tried to edit during Programme or

Shuffle Play.

• You tried to change the recorded level or perform Fade-in or Fade-out operation after the Daily Timer or Recording Timer had activated and turned on the power.

Cannot REC

The function is switched to MD.

Complete!

The editing operation of MDs is completed.

Procedure for using the Self-Diagnosis Function (Error History Display Mode). Note: Perform the self-diagnosis function in the “error history display mode” in the test mode. The following describes the least required

procedure. Be careful not to enter other modes by mistake. If you set other modes accidentally, press the MENU/NO button to exit the mode.

Table of Error Codes

Error Code

Could not load

Loading switches combined incorrectly

Timed out without reading the top of PTOC

Could read top of PTOC, but detected error

Timed out without accessing UTOC

Timed out without reading UTOC

Error in UTOC

Could not start playback

Error in sector

Retry cause generated during normal recording

Retried in DRAM overflow

Retry occurred during TOC writing

Retry aborted during S.F editing

Other than access processing, and could not read address.

Focus NG occurred and overran.

Description

1. Clicking the ENTER/YES button and the A (DISC 5) button while clicking the m (MD) button causes the program to enter test mode

and the message “Check” to be displayed on screen.

2. Rotate the MD JOG knob and when “[Service]” is displayed, press the ENTER/YES button.

3. Rotate the MD JOG knob and display “Err Display”.

4. Pressing the ENTER/YES button sets the error history mode and displays “op rec tm”.

5. Select the contents to be displayed or executed using the MD JOG knob.

6. Pressing the MD JOG knob will display or execute the contents selected.

7. Pressing the MD JOG knob another time returns to step 4.

8. Pressing the MENU/NO button displays “Err Display” and exits the error history mode.

9. To exit from test mode, enter MD mode and click the STR REPEAT button. The program will enter standby mode and then exit test mode.

ITEMS OF ERROR HISTORY MODE ITEMS AND CONTENTS

Selecting the Test Mode

Display

op rec tm

op play tm

spdl rp tm

retry err

total err

err history

retry adrs

History

Displays the total recording time. When the total recording time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 min” The display time is the time the laser is set to high power, which is about 1/4 of the actual recording time.

Displays the total playback time. When the total playback time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 min”

Displays the total rotating time of the spindle motor. When the total rotating time is more than 1 minute, displays the hour and minute When less than 1 minute, displays “Under 1 min”

Displays the total number of retry errors during recording and playback Displays “r xx p yy”. xx is the number of errors during recording. yy is the number of errors during playback. This is displayed in hexadecimal from 00 to FF.

Displays the total number of errors Displays “total xx”. This is displayed in hexadecimal from 00 to FF.

Displays the past ten errors. Displays “0x ErrCd@@”. X is the history number. The younger the number, the more recent is the history (00 is the latest). @@ is the error code. Select the error history number using the AMS knob.

Displays the past five retry addresses. Displays “xx ADRS yyyy”, xx is the history number, yyyy is the cluster with the retry error. Select the error history number using the AMS knob.

er refresh

op change

spdl change

Mode for erasing the error and retry address histories Procedure

1. Press the AMS knob when displayed as “er refresh”.

2. Press the YES button when the display changes to “er refresh?”. When “complete!” is displayed, it means erasure has completed. Be sure to check the following after executing this mode. *Data has been erased. *Perform recording and playback, and check that the mechanism is normal.

Mode for erasing the total time of op rec tm, op play tm. These histories are based on the time of replacement of the optical pick-up. If the optical pick-up has been replaced, perform this procedure and erase the history. Procedure

1. Press the AMS knob when displayed as “op change”.

2. Press the YES button when the display changes to “op change?”. When “Complete!” is displayed, it means erasure has completed.

Mode for erasing the total spdl rp tm time These histories are based on the time of replacement of the spindle motor. If the spindle motor has been replaced, perform this procedure and erase the history. Procedure

1. Press the AMS knob when displayed as “spdl change”

2. Press the YES button when the display changes to “spdl change?” When “Complete!” is displayed, it means erasure has completed.

TABLE OF CONTENTS

SECTION 1

SERVICING NOTES

1. SERVICING NOTES ......................................................... 4

2. GENERAL.......................................................................... 12

3. DISASSEMBLY

3-1. Case ..................................................................................... 13

3-2. Front Panel Section ............................................................. 13

3-3. CD Mechanism Deck Section ............................................. 14

3-4. MD Mechanism Deck Block ............................................... 14

3-5. CD Base Unit ...................................................................... 15

3-6. Main Board ......................................................................... 15

3-7. Fitting Base (Guide) Assy, Bracket (Chassis) and

Magnet Assy ....................................................................... 16

3-8. Tray (Sub) ........................................................................... 16

3-9. Chassis (Mold B) Section, Stocker Section and

Slider (Selection) ................................................................ 17

3-10. Gears Installation .............................................................. 17

3-11. Slider (Selection) Installation ............................................ 18

3-12. Stocker Section Installation............................................... 18

3-13. Chassis (Mold B) Section Installation .............................. 19

3-14. MD Mechanism Deck Section .......................................... 19

3-15. BD (MD) Board ................................................................ 20

4. TEST MODE ...................................................................... 21

5. ELECTRICAL ADJUSTMENT.................................... 27

6. DIAGRAMS

6-1. Circuit Boards Location ...................................................... 39

6-2. Block Diagrams ................................................................... 41

6-3. Schematic Diagram – CD Section –.................................... 44

6-4. Printed Wiring Board – CD Section – ................................. 45

6-5. Printed Wiring Board – MD Section – ................................ 46

6-6. Schematic Diagram – MD Section (1/2) – .......................... 47

6-7. Schematic Diagram – MD Section (2/2) – .......................... 48

6-8. Schematic Diagram – Main Section (1/2) – ........................ 49

6-9. Schematic Diagram – Main Section (2/2) – ........................ 50

6-10. Printed Wiring Board – Main Section – ............................ 51

6-11. Schematic Diagram – Digital Section – ............................ 52

6-12. Printed Wiring Board – Digital Section – ......................... 53

6-13. Schematic Diagram – Panel Section – .............................. 54

6-14. Printed Wiring Board – Panel Section – ............................ 55

6-15. Schematic Diagram – CD Mechanism Section – .............. 56

6-16. Printed Wiring Board – CD Mechanism Section – ........... 57

6-17. IC Block Diagrams ............................................................ 58

6-18. IC Pin Function ................................................................. 62

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.

FOR CD

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.

FOR MD

NOTES ON LASER DIODE EMISSION CHECK

Never look into the laser diode emission from right above when checking it for adjustment. It is feared that you will lose your sight.

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

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

This caution label is located inside the unit.

7. EXPLODED VIEW

7-1. Case, Chassis Section ......................................................... 71

7-2. Front Panel Section ............................................................. 72

7-3. CD Mechanism Deck Section-1 .......................................... 73

7-4. CD Mechanism Deck Section-2 .......................................... 74

7-5. CD Base Unit Section ......................................................... 75

7-6. MD Mechanism Section-1 .................................................. 76

7-7. MD Mechanism Section-2 .................................................. 77

8. ELECTRICAL PARTS LIST ........................................ 78

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.

CAUTION

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

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.

POWER SUPPLY DURING SERVICING

Connection:

• As this set has not own power supply, it does not operate independently. Therefore, during servicing, connect it to the Pre-Main amplifier and Tuner Unit (STR-NX5MD) of DHC-NX5MD.

SYSTEM CONTROL termina

Set

SYSTEM CONTROL terminal

Pre-Main AMP and Tuner Unit

Connector cable (19P)

AC IN

If STR-NX5MD are not available, use the Power Feed Jig (PFJ-

1) and Relay Connector Jig. In this case, after turn on the POWER switch on the Power Feed Jig, supply power with the following methods.

Procedure:

1. Press three buttons of G (MD), A (DISC 1), and s (CD)

simultaneously.

Connector cable (17P) of attachment to power feed jig

Power feed jig (PFJ-1)

CDP/MD

P707, P909

Relay connector jig (J-2501-197-A)

Exclusive cable (15P)

CN101 (19P) SYSTEM CONTROL terminal

Set

system cable

function button

CD AMS – AMS –

AMS + AMS + FR m FF M

MD AMS – AMS –

AMS + AMS + FR m FF M

OPTICAL PICK-UP CLEANING

Remove the case. (Refer to disassembly page 13)

3 Open the magnet

assy.

4 Cleaning the

optical pick-up.

2 four screws

(BVTP M2.6)

Note 1: In cleaning the lens, do not apply an excessive force.

As the optical pick-up is vulnerable, application of excessive force could damage the lens holder.

Note 2: In cleaning, do not use a cleaner other than exclusive clean-

ing liquid (KK-91 or isopropyl alcohol).

Note 3: Wipe the objective lens spirally from center toward outside.

(See Figure A)

(Figure A)

JIG FOR CHECKING BD (MD) BOARD WAVEFORM

The special jig (J-2501-196-A) is useful for checking the waveform of the BD (MD) board. The names of terminals and the checking items to be performed are shown as follows.

GND : Ground I+3V : For measuring IOP (Check the deterioration of the optical pick-up laser) IOP : For measuring IOP (Check the deterioration of the optical pick-up laser) TE : TRK error signal (Traverse adjustment) VC : Reference level for checking the signal RF : RF signal (Check jitter) FE : Focus error signal

I+3V

GND

IOP

I+3V

IOP

GND

FE VC RF

CN105

I+3V IOP GND TE FE VC RF

for

MDM-7B

Iop DATA RECORDING AND DISPLAY WHEN OPTICAL PICK-UP AND NON-VOLATILE MEMORY (IC195 OF BD BOARD) ARE REPLACED

The Iop value labeled on the optical pick-up can be recorded in the non-volatile memory. By recording the value, it will eliminate the need to look at the value on the label of the optical pick-up. When replacing the optical pick-up or non-volatile memory (IC195 of BD board), record the Iop value on the optical pick-up according to the following procedure.

Record Precedure:

1. Clicking the ENTER/YES button and the A (DISC 5) button while clicking the m (MD) button causes the program to enter test mode

and the message “Check” to be displayed on screen.

2. Rotate the MD JOG knob to display “[Service]”, and press the ENTER/YES button.

3. Rotate the MD JOG knob to display “Iop Write” (C05), and press the ENTER/YES button.

4. The display becomes “Ref=@@@.@” (@ is an arbitrary number) and the numbers which can be changed will blink.

5. Input the Iop value written on the optical pick-up. To select the number : Rotate the MD JOG knob. To select the digit : Press the MD JOG knob.

6. When the ENTER/YES button is pressed, the display becomes “Measu=@@@.@” (@ is an arbitrary number).

7. As the adjustment results are recorded for the 6 value. Leave it as it is and press the ENTER/YES button.

8. “Complete!” will be displayed momentarily. The value will be recorded in the non-volatile memory and the display will become “Iop Write” (C05).

9. Press the STR REPEAT button to complete.

Display Precedure:

1. Clicking the ENTER/YES button and the A (DISC 5) button while clicking the m (MD) button causes the program to enter test mode and the message “Check” to be displayed on screen.

2. Rotate the MD JOG knob to display “[Service]”, and press the ENTER/YES button.

3. Rotate the MD JOG knob to display “Iop Read” (C26).

4. “@@.@/##.#” is displayed and the recorded contents are displayed. @@.@ : indicates the Iop value labeled on the pick-up. ##.# : indicates the Iop value after adjustment

5. To end, press the MD JOG button or MENU/NO button to display “Iop Read” (C26). Then press the REPEAT button.

CHECKS PRIOR TO PARTS REPLACEMENT AND ADJUSTMENTS

Before performing repairs, perform the following checks to determine the faulty locations up to a certain extent. Details of the procedures are described in “5 Electrical Adjustments”.

• 5-6-2. Laser power check (see page 31)

• 5-6-3. Iop Compare (see page 31)

• 5-6-4. Auto Check (see page 32)

Note:

The criteria for determination above is intended merely to determine if satisfactory or not, and does not serve as the specified value for adjustments. When performing adjustments, use the specified values for adjustments.

RETRY CAUSE DISPLAY MODE

• In this test mode, the causes for retry of the unit during recording can be displayed on the fluorescent indicator tube. During playback, the

“track mode” for obtaining track information will be set.

This is useful for locating the faulty part of the unit.

• The following will be displayed :

During recording and stop : Retry cause, number of retries, and number of retry errors. During playback : Information such as type of disc played, part played, copyright. These are displayed in hexadecimal.

Procedure:

1. Press the ENTER/YES button while pressing the A (DISC 5) button and NAME EDIT/CHARACTER button.

2. Press the REC/RECIT button to start recording. Then press the X button and start recording.

3. To check the “track mode”, press the H button to start play.

4. To exit the test mode, press the @/1 button, and turn OFF the power. When “TOC” disappears, disconnect the power plug from the outlet.

Fig. 1 Reading the Test Mode Display (During recording and stop)

RTs@@c##c***

Fluorescent display tube display

@@ : Cause of retry ## : Number of retries *** : Number of retry errors

Reading the Retry Cause Display

Lower Bits

Hexadecimal

Bit

Binary

Higher Bits

84218421

b7 b6 b5 b4 b3 b2 b1 b0

00000001

00000010

00000100

00001000

00010000

00100000

01000000

10000000

Hexa-

decimal

Fig. 2 Reading the Test Mode Display (During playback)

@@####**$$

Fluorescent display tube display

@@ : Parts No. (name of area named on TOC) ## : Cluster ** : Sector $$ : Track mode (Track information such as copyright infor-

Cause of Retry Occurring conditions

shock

ader5

Discontinuous address

DIN unlock

FCS incorrect

IVR rec error

CLV unlock

Access fault

} Address (Physical address on disc)

mation of each part)

When track jump (shock) is detected

When ADER was counted more than five times continu-

ously

When ADIP address is not continuous

When DIN unlock is detected

When not in focus

When ABCD signal level exceeds the specified range

When CLV is unlocked

When access operation is not performed normally

Reading the Display:

Convert the hexadecimal display into binary display. If more than two causes, they will be added.

Example

When 42 is displayed: Higher bit : 4 = 0100 t b6 Lower bit : 2 = 0010 t b1 In this case, the retry cause is combined of “CLV unlock” and “ader5”.

When A2 is displayed: Higher bit : A = 1010 t b7+b5 Lower bit : 2 = 0010 t b1 The retry cause in this case is combined of “Access fault”, “IVR rec error”, and “ader5”.

Reading the Track Mode Display

Higher Bits Lower Bits

Hexadecimal

Bit

Binary

Reading the Display:

Convert the hexadecimal display into binary display. If more than two causes, they will be added.

Example When 84 is displayed:

Higher bit : 8 = 1000 t b7 Lower bit : 4 = 0100 t b2 In this case, as b2 and b7 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis OFF”, “Monaural”, “Original”, “Copyright exists”, and “Write allowed”.

Example When 07 is displayed:

Higher bit : 0 = 1000 t All 0 Lower bit : 7 = 0111 t b0+b1+b2 In this case, as b0, b1, and b2 are 1 and others are 0, it can be determined that the retry cause is combined of “Emphasis ON”, “Stereo”, “Original”, “Copyright exists”, and “Write prohibited”.

84218421

b7 b6 b5 b4 b3 b2 b1 b0

00000001

00000010

00000100

00001000

00010000

00100000

01000000

10000000

Hexa-

decimal

When 0 When 1

Emphasis OFF

Monaural

This is 2-bit display. Normally 01.

01:Normal audio. Others:Invalid

Audio (Normal)

Original

Write prohibited

Details

Emphasis ON

Stereo

Invalid

Digital copy

No copyright

Write allowed

Hexadecimal t Binary Conversion Table

Hexadecimal Binary Hexadecimal Binary

0000

0001

0010

0011

0100

0101

0110

0111

1000

1001

1010

1011

1100

1101

1110

1111

• LOCATION OF CONTROLS

1 2 345

– Front Panel –

wf wd ws

SECTION 2

GENERAL

6 7

8 9 q; qa qs

qdqfqgqhqjqkqlw;

1 G (CD) button 2 S (CD) button 3 s (CD) button 4 DISC 1 to 5 (CD) button and indicator 5 A (CD DISC 1 to 5) button 6 A (MD) button 7 m (MD) button 8 M (MD) button 9 NAME EDIT/CHARACTER button q; CLEAR button qa MENU/NO button qs ENTER/YES button qd . MD JOG > +/– dial qf S.F EDIT button qg REC MODE button qh HIGH SPEED button qj Display window qk NORMAL button ql REC/REC IT button w; MD DISPLAY button wa MD disc compartment ws G (MD) button wd S (MD) button wf s (MD) button wg CD disc tray

SECTION 3

)

DISASSEMBLY

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

3-1. CASE

2 two screws

(case 3 TP2)

1 screw

(BVTP3 × 10)

3 Remove the case

in the arrow A direction.

2 two screws

(case 3 TP2)

3-2. FRONT PANEL SECTION

1 flat cable (13 core)

(CN103)

5 screw

(BVTP3 × 10)

4 screw

3 two screws

(SUMITITE (B3), +BV)

(BVTP2.6 × 8)

2 flat cable (9 core)

(CN102)

4 screw

(BVTP2.6 × 8

7 front panel

section

6 two screws

(BVTP3 × 10)

3-3. CD MECHANISM DECK SECTION

)

(CDM53E-K4BD40)

5 Remove the CD mechanism deck

section (CDM53E-K4BD40) in the arrow A direction.

1 flat cable (17 core)

(CN112)

4 four screws

(BVTP3 × 10)

3 connector

(CN713)

3-4. MD MECHANISM DECK BLOCK

2 flat cable (19 core)

(CN111)

2 screw

(BVTP3 × 8)

3 MD mechanism deck block

1 flat cable (25 core

(CN114)

3-5. CD BASE UNIT

)

(BU-K4BD40)

4 CD base unit

(BU-K4BD40)

3-6. MAIN BOARD

6 Remove the MAIN board

4 three screws

(BVTP3 × 8)

3 two compression springs

(black)

1 two screws

in the arrow A direction.

2 two compression spring

(silver)

1 two screws

(PTPWH M2.6)

5 two PC board

holders

2 connection cord

3 screw

(BVTP3 × 10)

1 screw

(BVTP3 × 10

(CN101)

3-7. FITTING BASE (GUIDE) ASSY, BRACKET (CHASSIS) AND

MAGNET ASSY

7 four screws

(BVTP M2.6)

2 four screws

(BVTP M2.6)

4 five screws

(BVTP M2.6)

5 bracket

(chassis)

3 base (guide) assy, fitting

1 two connectors

(CN709, 715)

8 base (magnet) assy, fitting

6 connector

(CN710)

3-8. TRAY (SUB)

1 Rotating the pulley (LD), shift the slider (selection) in the arrow A direction. 2 Rotating the pulley (mode) in the arrow direction, adjust the tray (sub) to be removed. 3 Rotating the pulley (LD), shift the slider (selection) in the arrow B direction. 4 Rotating the pulley (mode) in the arrow direction, remove the tray (sub) to be removed.

pulley (LD)

stocker section

tray (sub)

slider (selection)

pulley (mode)

3-9. CHASSIS (MOLD B) SECTION, STOCKER SECTION AND

5 stocker

section

4 two step

screws

4 two step screws

3 gear (eject)

2 chassis (mold B) section

Note: Rotating the pulley (LD),

shift the slider (selection) to the left.

9 compression

spring

7 slider (selection)

8 washer

6 two screws

(PTPWH M2.6)

1 three screws

(BVTP M2.6)

pulley (LD)

SLIDER (SELECTION)

Note: In mounting the parts, refer to page 18 and 19.

3-10. GEARS INSTALLATION

3 gear (gear B)

portion A

Adjust the gear (gear B) with the portion A as shown.

1 Slide the slider (U/D)

2 gear (U/D slider)

fully in the arrow direction.

slider (U/D) gear

4 gear (gear A)

gear (gear B)

linearly

Adjust the gear so that it meshes with the bottom tooth of slider (U/D)gear, as shown.

Adjust so as to be aligned with gear (B) linearly,as shown.

3-11. SLIDER (SELECTION) INSTALLATION

2 gear (chuking)

rotary encoder

Align with the slot of rotary encoder.

1 rotary encoder

6 two screws

(PTPWH M2.6)

5 washer

4 compression spring

7 Insert the slider (selection)

into the portion A.

portion A

3 convex portion of

slider (selection)

gear (chuking)

align marking

3-12. STOCKER SECTION INSTALLATION

3 two step screws

1 stocker section

Insert a convex portion into a groove of gear (chuking).

2 portion A of tray (sub)

Hook the portion A of tray (sub) to the slider (selection).

potion A of tray (sub)

sticking of slider (selection)

3 two step screws

3-13. CHASSIS (MOLD B) SECTION INSTALLATION

3 three screws

(BVTP M2.6)

2 Insert the gear (eject)

under the gear (LD deceleration).

gear (LD deceleration)

3-14. MD MECHANISM DECK SECTION

(MDM-7B)

portion A

portion B of slider (selection)

1 two screws

(BVTP 3 × 8)

1 Insert the portion A of

chassis (mold B) sectio into the portion B of slider (selection).

qa two screws

(BVTPWH M3), step

qs MD mechanism deck (MDM-7B)

2 screw

(BVTP 3 × 8)

7 two claws

8 DIGITAL board

6 screw

3 cover (MD)

4 flat type wire (17core)

(CN1004)

5 flat type wire (27core) (CN1003)

0 two screws

(BVTPWH M3), step

9 flat type wire (25core)

(CN1001)

(BVTP 3 × 8)

3-15. BD (MD) BOARD

5 Connect the short land by lead wire.

short land

Bottom of the optical pick-up

2 Remove the solder

(Two portions)

CN101

3 two screws

(BTP 2 × 6)

6 connector

(CN101)

1 connector

(CN104)

4 BD (MD) board

2 Remove the solder

(Two portions)

M102

M101

M103

S102

2 Remove the solder (Three portions)

SECTION 4

TEST MODE

[LED All Lit, Key Check Mode]

Procedure:

1. Press the ?/1 button to turn the power ON.

2. Press three buttons of simultaneously.

3. LEDs are all turned on. Press the G (CD) button, and the key check mode is activated.

4. To release from this mode, press three buttons in the same manner as step 2, or remove the power cord.

[CD Delivery Mode]

• This mode moves the optical pick-up to the position durable to

vibration. Use this mode when returning the set to the customer after repair.

Procedure:

1. Press the ?/1 button to turn the power ON.

2. Press the G (MD) and [DISC 1] buttons simultaneously.

3. A message “LOCK” is displayed on the liquid crystal display of the STR-NX5MD, and the CD delivery mode is set.

[CD/MD Test Mode] (In case of connected to the STR-NX5MD)

• If connected to the STR-NX5MD, the mode also acts as the

STR-NX5MD amplifer test mode.

Procedure:

1. Press the ?/1 button to turn the power ON.

2. Press three buttons of [ENTER/YES] + [DEMO] and [BAND] of the STR-NX5MD simultaneously.

3. On liquid crystal display of the STR-NX5MD, the disc calendar blinks, then the function which was set before the test mode became active is displayed.

G (MD), A (DISC 1), and [DISC 5]

[COLD RESET]

Procedure:

1. Press the ?/1 button to turn the power ON.

2. Press CLEAR (MD) and

s (CD) buttons simultaneously.

[CD/MD Test Mode] (In case of connected to the power feed jig)

Procedure:

1. Turn on the Power switch on the power feed jig.

2. Press three buttons of G (MD), A (DISC 1), and s (CD) simultaneously.

3. Also, the other functions are enabled by pressing two buttons simultaneously. A combination of respective functions and buttons is as follows.

function button

CD AMS – AMS –

AMS + AMS + FR m FF M

MD AMS – AMS –

AMS + AMS + FR m FF M

4-1. PRECAUTIONS FOR USE OF TEST MODE

• As loading related operations will be performed regardless of the test mode operations being performed, be sure to check that the disc is stopped before setting and removing it. Even if the A (MD) button is pressed while the disc is rotating during continuous playback, continuous recording, etc., the disc will not stop rotating. Therefore, it will be ejected while rotating. Be sure to press the A (MD) button after pressing the MENU/NO button and the rotation of disc is stopped.

4-1-1. Recording laser emission mode and operating buttons

• Continuous recording mode (CREC 1MODE) (C35)

• Laser power check mode (LDPWR CHECK) (C13)

• Laser power adjustment mode (LDPWR ADJUS) (C04)

• Iop check (Iop Compare) (C27)

• Iop value nonvolatile writing (Iop NV Save) (C06)

• Traverse (MO) check (EF MO CHECK) (C14)

• Traverse (MO) adjustment (EF MO ADJUS) (C07)

• When pressing the REC MODE button.

4-2. SETTING THE TEST MODE

The following are two methods of entering the test mode. Procedure: Pressing the ENTER/YES button and the A (DISC 5) button while pressing the m (MD) button causes the program to

enter test mode. When the test mode is set, “[Check]” will be displayed. Rotating the MD JOG knob switches between the following three groups; ··· y Check y Service y Develop y ···.

NOTE: Do not use the test mode in the [Develop] group.

If used, the unit may not operate normally. If the [Develop] group is set accidentally, press the MENU/NO button immediately to exit the [Develop] group.

4-3. EXITING THE TEST MODE

Press the REPEAT button. The disc is ejected when loaded, and “Standby” display blinks, and the STANDBY state is set.

4-4. BASIC OPERATIONS OF THE TEST MODE

All operations are performed using the MD JOG knob, ENTER/YES button, and MENU/NO button. The functions of these buttons are as follows.

Function name

MENU/NO button

ENTER/YES button

AMS knob

Left or Right

Push

Cancel or move to top hierarchy

Set

Select

Set submenu

Function

4-5. SELECTING THE TEST MODE

There are 26 types of test modes as shown below. The groups can be switched by rotating the MD JOG knob. After selecting the group to be used, press the ENTER/YES button. After setting a certain group, rotating the MD JOG knob switches between these modes. Refer to “Group” in the table for details selected. All adjustments and checks during servicing can be performed in the test mode in the Service group.

NOTE: Do not use the test mode in the [Develop] group.

If used, the unit may not operate normally. If the [Develop] group is set accidentally, press the MENU/NO button immediately to exit the [Develop] group.

Display

AUTO CHECK

Err Display

TEMP ADJUS

LDPWR ADJUS

Iop Write

Iop NV Save

EF MO ADJUS

EF CD ADJUS

FBIAS ADJUS

AG Set (MO)

AG Set (CD)

TEMP CHECK

LDPWR CHECK

EF MO CHECK

EF CD CHECK

FBIAS CHECK

ScurveCHECK

VERIFYMODE

DETRK CHECK

0920 CHECK

Iop Read

Iop Compare

ADJ CLEAR

INFORMATION

CPLAY1MODE

CREC 1MODE

No.

Automatic self-diagnosis

C01

Error history display, clear

C02

Temperature compensation offset adjustment

C03

Laser power adjustment

C04

Iop data writing

C05

Writes current Iop value in read nonvolatile memory using microprocessor

C06

Traverse (MO) adjustment

C07

Traverse (CD) adjustment

C08

Focus bias adjustment

C09

Focus, tracking gain adjustment (MO)

C10

Focus, tracking gain adjustment (CD)

C11

Temperature compensation offset check

C12

Laser power check

C13

Traverse (MO) check

C14

Traverse (CD) check

C15

Focus bias check

C16

S-curve check

C17

Nonvolatile memory check

C18

Detrack check

C19

Most circumference check

C25

Iop data display

C26

Comparison with initial Iop value written in nonvolatile memory

C27

Initialization of nonvolatile memory for adjustment values

C28

Display of microprocessor version, etc.

C31

Continuous playback mode

C34

Continuous recording mode

C35

Details

Mark

Group

Check Service

• For details of each adjustment mode, refer to “5. Electrical Adjustments”. For details of “Err Display”, refer to “Self-Diagnosis Function” on page 2.

• If a different mode has been selected by mistake, press the MENU/NO button to exit that mode.

• Modes with (X) in the Mark column are not used for servicing and therefore are not described in detail. If these modes are set acciden-

tally, press the MENU/NO button to exit the mode immediately.

4-5-1. Operating the Continuous Playback Mode

1. Entering the continuous playback mode

1 Set the disc in the unit. (Whichever recordable discs or discs for playback only are available.) 2 Rotate the MD JOG knob and display “CPLAY1MODE” (C34). 3 Press the ENTER/YES button to change the display to “CPLAY1 MID”. 4 When access completes, the display changes to “C = AD = ”.

Note : The numbers “ ” displayed show you error rates and ADER.

2. Changing the parts to be played back

1 Press the ENTER/YES button during continuous playback to change the display as below.

“CPLAY1 MID” t “CPLAY1 OUT” t “CPLAY1 IN”

When pressed another time, the parts to be played back can be moved.

2 When access completes, the display changes to “C = AD = ”. Note : The numbers “ ” displayed show you error rates and ADER.

3. Ending the continuous playback mode

1 Press the MENU/NO button. The display will change to “CPLAY1MODE”(C34). 2 Press the A (MD) button to remove the disc.

Note : The playback start addresses for IN, MID, and OUT are as follows.

IN 40h cluster MID 300h cluster OUT 700h cluster

4-5-2. Operating the Continuous Recording Mode (Use only when performing self-recording/palyback check.)

1. Entering the continuous recording mode

1 Set a recordable disc in the unit. 2 Rotate the MD JOG knob and display “CREC 1MODE” (C35). 3 Press the ENTER/YES button to change the display to “CREC1 MID”. 4 When access completes, the display changes to “CREC1 ( )” and REC lights up.

Note : The numbers “ ” displayed shows you the recording position addresses.

2. Changing the parts to be recorded

1 When the ENTER/YES button is pressed during continuous recording, the display changes as below.

“CREC1 MID” t “CREC1 OUT” t “CREC1 IN”

When pressed another time, the parts to be recorded can be changed. REC goes off.

2 When access completes, the display changes to “CREC1 ( Note : The numbers “ ” displayed shows you the recording position addresses.

3. Ending the continuous recording mode

1 Press the MENU/NO button. The display changes to “CREC 1MODE” (C35 ) and REC goes off. 2 Press the A (MD) button to remove the disc.

Note 1 : The recording start addresses for IN, MID, and OUT are as follows.

IN 40h cluster MID 300h cluster OUT 700h cluster

Note 2 : The MENU/NO button can be used to stop recording anytime. Note 3 : Do not perform continuous recording for long periods of time above 5 minutes. Note 4 : During continuous recording, be careful not to apply vibration.

)” and REC lights up.

4-6. FUNCTIONS OF OTHER BUTTONS

ENTER/YES

s M (MD JOG) m (MD JOG)

REC MODE

REC

CLEAR

Function

Sets continuous playback when pressed in the STOP state. When pressed during continuous

playback, the tracking servo turns ON/OFF.

Stops continuous playback and continuous recording.

The sled moves to the outer circumference only when this is pressed.

The sled moves to the inner circumference only when this is pressed.

Switches between the pit and groove modes when pressed.

Switches the spindle servo mode (CLV S y CLV A).

Switches the displayed contents each time the button is pressed.

Ejects the disc.

Exits the test mode.

Contents

4-7. TEST MODE DISPLAYS

Each time the MD DISPLAY button is pressed, the display changes in the following order. When CPLAY and CREC are started, the display will forcibly be switched to the error rate display as the initial mode.

1. Mode display

Displays “TEMP ADJUS” (C03), “CPLAY1MODE” (C34), etc.

2. Error rate display

Displays the error rate in the following way.

C1 = AD = C1 = Indicates the C1 error. AD = Indicates ADER.

3. Address display

The address is displayed as follows. (MO:recordable disc, CD:playback only disc) If the CLEAR button is pressed after pressing the PROGRAM button, the display switches from groove to pit or vice versa. h = s = (MO pit and CD) h = a = (MO groove) h = Indicates the header address. s = Indicates the SUBQ address. a = Indicates the ADIP address.

Note: “–” is displayed when the address cannnot be read.

Auto gain display (Not used in servicing)

Detrack check display (Not used in servicing)

IVR display (Not used in servicing)

Mode display

Error rate display

Address display

C1 error and Jitter display

(Not used in servicing)

AD error and Jitter display

(Not used in servicing)

4-8. MEANINGS OF OTHER DISPLAYS

Display

G S

REC

SYNC

L.SYNC

OVER

B/1

A-/REP

TRACK/(LP) 4/Calendar frame

DISC/LP2

SLEEP/SHUF

MONO

When Lit When Off

Servo ON

Tracking servo OFF

Recording mode ON

CLV low speed mode

ABCD adjustment completed

Tracking offset cancel ON

Tracking auto gain OK

Focus auto gain OK

Pit

High reflection

CLV S

CLV LOCK

Contents

Servo OFF

Tracking servo ON

Recording mode OFF

CLV normal mode

Tracking offset cancel OFF

Groove

Low reflection

CLV A

CLV UNLOCK

4-9. AUTOMATIC SELF-DIAGNOSIS FUNCTION

This test mode performs CREC and CPLAY automatically for mainly checking the characteristics of the optical pick-up. To perform this test mode, the laser power must first be checked. Perform AUTO CHECK after the laser power check and Iop check.

Procedure

1. Press the ENTER/YES button. If “LDPWR” is displayed, it means that the laser power check has not been performed. In this case, perform the laser power check and Iop compare, and then repeat from step 1.

2. If a disc is in the mechanical deck, it will be ejected forcibly. “DISC IN” will be displayed in this case. Load a test disc (MDW-74/GA-1) which can be recorded.

3. If a disk is loaded at step 2, the check will start automatically.

4. When “XX CHECK” is displayed, the item corresponding to XX will be performed. When “06 CHECK” completes, the disc loaded at step 2 will be ejected. “DISC IN” will be displayed. Load the check disc (MD) TDYS-1.

5. When the disc is loaded in step 4, the check will automatically be resumed from “07 CHECK”.

6. After completing to test item 12, check OK or NG will be displayed. If all items are OK, “CHECK ALL OK” will be displayed. If any item is NG, it will be displayed as “NG:xxxx”.

When “CHECK ALL OK” is displayed, it means that the optical pick-up is normal. Check the operations of the other spindle motor, thread motor, etc. When displayed as “NG:xxxx”, it means that the optical pick-up is faulty. In this case, replace the optical pick-up.

4-10. INFORMATION

Display the software version.

Procedure

1. If displayed as “INFORMATION”, press the ENTER/YES button.

2. The software version will be displayed.

3. Press the MENU/NO button to end this mode.

4-11. WHEN MEMORY NG IS DISPLAYED

If the nonvolatile memory data is abnormal, “E001”/”MEMORY NG” will be displayed so that the MD deck does not continue operations. In this case, set the test mode promptly and perform the following procedure.

Procedure

1. Set the test mode. (Refer to 4-2.)

2. Normally a message for selecting the test mode will be displayed. However if the nonvolatile memory is abnormal, the following will be displayed. “INIT EEP?”

3. Press the s button and A button together.

4. Rotate the MD JOG knob and select MDM-7B.

5. Press the MD JOG knob. If the nonvolatile memory is successfully overwritten, the normal test mode will be set and a message to select the test mode will be displayed.

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