Sony HCD-C7NT Manual de usuario

HCD-C7NT

SERVICE MANUAL

Sony Corporation

Audio&Video Business Group

Published by SonyTechno Create Corporation

AEP Model

UK Model

E Model

MICRO HI-FI COMPONENT SYSTEM

9-873-685-04

2009L05-1

SPECIFICATIONS

Ver. 1.3 2009.12

HCD-C7NT is the Amplifier, CD player,

MD Deck and Tuner section in CMT-C7NT.

Model Name Using Similar Mechanism HCD-C5

CD Mechanism Type TN-CCD1001Z

Base Unit Name TT BASE ASSY

Optical Pick-up Name OPTIMA-720L1E

Model Name Using Similar Mechanism New

MD Mechanism Type MDM-7X2B

Optical Pick-up Name KMS-262E

Section

Amplifier section

European model:

DIN power output (rated): 15 + 15 W

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

20 + 20 W

(6 ohms at 1 kHz, 10%

THD)

Music power output (reference):

45 + 45 W

Other models:

The following measured at 220 V AC, 60 Hz

DIN power output (rated): 15 + 15 W

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

20 + 20 W

(6 ohms at 1 kHz, 10%

THD)

Inputs

TAPE IN (stereo minijack):Sensitivity 250 mV,

impedance 47 kilohms

DIGITAL OPTICAL IN (Supported sampling

frequencies: 32 kHz, 44.1 kHz and 48 kHz)

Outputs

TAPE OUT (stereo minijack):

Sensitivity 250 mV,

impedance 1 kilohm

PHONES (stereo minijack):

Accepts headphones with

an impedance of 8 ohms

or more

CD player section

System Compact disc and digital

audio system

Laser Semiconductor laser

(λ= 780 nm)

Emission

duration: continuous

Frequency response 2 Hz – 20 kHz

MD deck section

System MiniDisc digital audio

system

Laser Semiconductor laser

(λ=780 nm)

Emission duration:

continuous

Sampling frequency 44.1 kHz

Frequency response 5 Hz – 20 kHz

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 – 108.0 MHz

(50-kHz step)

Antenna FM wire antenna

Antenna terminals 75 ohm unbalanced

Intermediate frequency 10.7 MHz

AM tuner section

Tuning range

European model: 531 – 1,602 kHz

(with the tuning interval

set at 9 kHz)

Other models: 530 – 1,710 kHz

(with the tuning interval

set at 10 kHz)

531 – 1,602 kHz

(with the tuning interval

set at 9 kHz)

Antenna AM loop antenna, external

antenna terminal

Intermediate frequency 450 kHz

General

Power requirements

European model: 230 V AC, 50/60 Hz

Other models: 220 V AC , 50/60 Hz

Power consumption

European model: See the nameplate

0.5 W (at the power

saving mode)

Other models: See the nameplate

Dimensions (w/h/d) Approx. 145 ×125 ×

273 mm incl. projecting

parts and controls

Mass Approx. 4.5 kg

Supplied accessories Remote commander (1)

FM wire antenna (1)

AM loop antenna (1)

USB cable (1)

Operating Instructions (1)

M-crew for CMT-C7NT/

OpenMG Jukebox for Net

MD CD-ROM (1)

M-crew Operating

Instructions (1)

OpenMG Jukebox for Net

MD Operating

Instructions (1)

Warranty (1)

Design and specifications are subject to change

without notice.

HCD-C7NT

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 Self-Diagnosis 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 3 or 5 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 (see page 19).

C12/Cannot Copy

You tried to record a CD or MD with a format that

the system does not support, such as a CD-ROM.

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 load it again.

C14/Toc Error

The MD deck cannot read the disc information

properly.

cReplace the MD.

Erase all the recorded contents of the MD using

All Erase Function (see page 35).

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) or CD-RW (ReWritable

CD).

cThe Serial Copy Management System prevents

making a digital copy (see page 57). You cannot

record a CD-R or CD-RW.

C71/Check OPT-IN

This appears momentarily because of the signal of

the digital broadcast during recording.

cThere is no affect on the recorded contents.

No component is connected to the DIGITAL

OPTICAL IN jack, or a digital component is not

connected properly.

cConnect a digital component to the DIGITAL

OPTICAL IN jack properly using a digital

connecting cable (not supplied, see page 49).

The connected digital component is not turned on.

cSee the operating instructions supplied with the

connected component and confirm whether the

component is turned on.

The digital connecting cable connected to the

DIGITAL OPTICAL IN jack is pulled out, or the

connected digital component is turned off during

digital recording.

cConnect the cable, or turn on the digital

component.

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.

HCD-C7NT

TABLE OF CONTENTS

SELF-DIAGNOSIS FUNCTION..................................... 2

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

2. GENERAL ................................................................... 7

3. DISASSEMBLY ......................................................... 9

4. TEST MODE ............................................................... 24

5. ELECTRICAL ADJUSTMENTS

CD Section ...................................................................... 33

MD Section ..................................................................... 34

6. DIAGRAMS

6-1. Note For Printed Wiring Boards and

Schematic Diagrams ....................................................... 45

–Wave forms................................................................... 45

–Circuit Boards Location............................................... 45

6-2. Block Diagram –CD Servo Section –............................ 46

6-3. Block Diagram –MD Servo Section –........................... 47

6-4. Block Diagram –Main Section –................................... 48

6-5. Block Diagram –USB section –..................................... 49

6-6. Printed Wiring Boards –BD (CD) Board –................... 50

6-7. Schematic Diagram –BD (CD) Board –........................ 51

6-8. Printed Wiring Boards –Connector Section –.............. 52

6-9. Schematic Diagram –Connector Section –.................... 53

6-10. Printed Wiring Board –BD (MD) Board –.................... 54

6-11. Schematic Diagram –BD (MD) Board (1/2) –.............. 55

6-12. Schematic Diagram –BD (MD) Board (2/2) –.............. 56

6-13. Printed Wiring Board –MD DIGITAL Board –............ 57

6-14. Schematic Diagram –MD DIGITAL Board (1/3) –...... 58

6-15. Schematic Diagram –MD DIGITAL Board (2/3) –...... 59

6-16. Schematic Diagram –MD DIGITAL Board (3/3) –...... 60

6-17. Printed Wiring Board –UCOM Board –........................ 61

6-18. Schematic Diagram –UCOM Board –........................... 62

6-19. Printed Wiring Boards –Audio Section –...................... 63

6-20. Schematic Diagram –Audio Section –........................... 64

6-21. Printed Wiring Board –PANEL Board –....................... 65

6-22. Schematic Diagram –PANEL Board –.......................... 66

6-23. Printed Wiring Boards –Power Section –...................... 67

6-24. Schematic Diagram –Power Section –.......................... 68

6-25. IC Block Diagrams ......................................................... 69

6-26. IC Pin Function Description ........................................... 74

7. EXPLODED VIEWS................................................ 82

8. ELECTRICAL PARTS LIST ............................... 92

HCD-C7NT SECTION 1

SERVICING NOTE

This appliance is classified as a CLASS 1 LASER product. The

CLASS 1 LASER PRODUCT MARKING is located on the bottom

exterior.

Laser component in this product is capable

of emitting radiation exceeding the limit for

Class 1.

CAUTION

Use of controls or adjustments or performance of procedures

otherthan those specifiedherein may resultin 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.

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 pick-

up 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.

This caution

label is

located inside

the unit.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH

MARK 0ON THE SCHEMATIC DIAGRAMS AND INTHE 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.

ADVARSEL

Eksplosjonsfare ved feilaktig skifte av batteri.

Benytt samme batteritype eller en tilsvarende type

anbefalt av apparatfabrikanten.

Brukte batterier kasseres i henhold til fabrikantens

instruksjoner.

VARNING

Explosionsfara vid felaktigt batteribyte.

Använd samma batterityp eller en likvärdig typ som

rekommenderas av apparattillverkaren.

Kassera använt batteri enligt gällande föreskrifter.

VAROITUS

Paristo voi räjähtää, jos se on virheellisesti asennettu.

Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiin.

Hävitäkäytetty paristo valmistajan ohjeiden mukaisesti.

ADVARSEL!

Lithiumbatteri-Eksplosionsfare ved fejlagtig håndtering.

Udskiftning måkun ske med batteri

af samme fabrikat og type.

Levér det brugte batteri tilbage til leverandøren.

CAUTION

Danger of explosion if battery is incorrectly replaced.

Replace only with the same or equivalent type recommended by

the manufacturer.

Discard used batteries according to the manufacturer’s instructions.

HCD-C7NT

SERVICE POSITION OFTHE CD MECHANISM DECK

SERVICE POSITION OFTHE MD MECHANISM DECK

STAND

BD (CD) BOAR

UCOM BOARD

CD MECHANISM DECK

(TN-CCD1001Z)

CN101

CN204

BD (MD) BOARD

PANEL BOARD AUDIO BOARD

MD DIGITAL BOARD

MD MECHANISM (MDM-7X2B

)

UCOM BOARD

BD (CD) BOARD

CN102

CN203

CN204

CN101

CN201

CN601

CN222

CN1002

CN1003

CN1001

CN102

CN103

CN1004

CN1005

HCD-C7NT

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.

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)

GND : Ground

TE : Tracking error signal (Traverse adjustment)

FE : Focus error signal

VC : Reference level for checking the signal

RF : RF signal (Check jitter)

I+3V

CN105

IopTE VC

GND FE RF

I+3V

Iop

GND

I+3V

Iop

GND

for MDM-7X2

HCD-C7NT

SECTION 2

GENERAL This section is extracted

from instruction manual.

Main unit

79 8

CD SYNC HIGH 8(19, 60)

CD SYNC NORMAL 9(19)

CD Z2(10, 60)

FUNCTION qs (9, 11, 13, 14, 16,

17, 19, 21–24, 26, 30–43, 50,

52)

MD Z6(15, 19, 29, 53)

NET MD 7(53)

REC/REC IT 9(20, 21, 25, 26,

28, 50, 60)

Remote sensor 0

TUNING +/– 5(42)

VOL +/– qa (46)

BUTTON DESCRIPTIONS

? 1/ (power) 1(7, 19, 29, 43, 46,

48, 53)

u3(9–11, 14–16, 19–21, 26,

28, 51)

x4(10, 11, 15, 16, 20–22, 26,

28, 51)

.> 5(10, 11, 13, 15–17,

22–26, 30–41, 46–48)

mM5(10, 15, 36)

HCD-C7NT

Remote control

1243

qjqhqlqk

CD xqh (10, 11)

CD Xws (10)

CD Nwd (9, 11, 21)

CLEAR 9(11, 13, 16, 30, 44)

CLOCK/TIMER SELECT 6

(47, 48)

CLOCK/TIMER SET 7(8, 46,

47)

CURSOR T/twh (8, 13, 30)

DBFB qf (45)

DISPLAY wk (8, 12, 17, 44)

ENTER/YES 8(8, 11, 13, 14,

16, 21–26, 29–42, 44, 46, 47)

FM MODE qj (43)

FUNCTION w; (9, 11, 13, 14, 16,

17, 19, 21–24, 26, 30–43, 50,

52)

GROUP ON/OFF wf (17, 27, 28,

30–34)

GROUP SKIP qs (17, 28, 31–33)

Letter/Number buttons wj (10,

13, 15, 30, 43)

MD xqh (15, 16, 20–22, 26, 28,

51)

MD Xws (15, 26)

MD Nwg (14, 16, 17, 19, 20)

MENU/NO q;

(13, 14, 22–26,

29, 31–42)

NAME EDIT/SELECT (13,

29–31, 44)

PLAY MODE qk (9, 11, 13, 14,

16, 29, 40, 41)

PRESET EQ qg (45)

REPEAT qj (10, 15)

SCROLL 5(12, 14, 18, 31)

SLEEP 1(45)

TIME 2(8, 11, 12, 16, 17)

TUNER BAND wa (42, 43)

TUNING MODE qk (42, 43)

TUNING +/– ql (42, 43)

VOL +/– qd (46)

BUTTON DESCRIPTIONS

? 1/ (power) 4(7, 19, 29, 43, 46,

48, 53)

. > qa (8, 10, 11, 13–17,

22–26, 30–41, 46–48)

–/+ qa (8, 46, 48)

m M wh (10, 15, 36, 38)

Setting the time

Turn on the system.

Press CLOCK/TIMER SET on the

remote.

If you are setting the clock for the first time,

go to step 5.

Press – or + (.or >) on the

remote repeatedly until “CLOCK SET?”

appears in the display.

Press ENTER/YES on the remote.

The day indication flashes.

Press – or + (.or >) on the

remote repeatedly to set the day, and

then press ENTER/YES or CURSORt

on the remote.

The hour indication flashes.

Press – or + (.or >) on the

remote to set the hour, and then press

ENTER/YES or CURSORton the

remote.

The minute indication flashes.

Press – or + (.or >) on the

remote repeatedly to set the minute,

and then press ENTER/YES on the

remote.

If you made a mistake

Press TCURSOR or CURSORton the

remote until the indication you wish to change

(day, hour, minute) flashes, and then change

the setting.

To reset the time

Start over from step 1.

HCD-C7NT

SECTION 3

DISASSEMBLY

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

•The dotted square with arrow ( →) prompts you to move to the next job when all of the works within the dotted square ( ) are

completed.

BOTTOM PLATE, CASE

(Page 10)

JACK BOARD, HP BOARD,

REAR COVER

(Page 18)

OVER WRITE HEAD (HR901)

(Page 23)

SET

LOADING MOTOR (M703),

SPINDLE MOTOR (M701),

SLED MOTOR (M702)

(Page 22)

PANEL BOARD

(Page 10)

UCOM BOARD,

AMP POWER BOARD

(Page 19)

AUDIO BOARD,

POWER BOARD,

POWER TRANSFORMER

(T900) (1)

(Page 20)

CD MECHANISM DECK

(TN-CCD1001Z),

BD (CD) BOARD

(Page 11)

AUDIO BOARD,

POWER BOARD,

POWER TRANSFORMER

(T900) (2)

(Page 20)

MD MECHANISM DECK

(MDM-7X2B),

MD DIGITAL BOARD

(Page 21)

CONNECTOR BOARD

(Page 12) FEED MOTOR ASSY (M903)

(Page 15) REAR DAMPER BRACKET

(Page 15)

SW BOARD

(Page 14)

FRONT BRACKET SECTION,

LOADING MOTOR ASSY

(M902)

(Page 13)

SPINDLE MOTOR ASSY

(M904)

(Page 18)

BASE SECTION

(Page 17)

OPTICAL PICK-UP

(OPTIMA-720L1E),

SCREW GUIDE,

FEED SCREW ASSY, etc.

(Page 16)

OPTICAL PICK-UP

(OPTIMA-720L1E)

(Page 16)

HOLDER ASSY

(Page 21)

OPTICAL PICK-UP

(KMS-262E)

(Page 23)

BD (MD) BOARD

(Page 22)

TUNER PACK,

D. C. FAN (M901)

(Page 19)

HCD-C7NT

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

3-1. Bottom Plate, Case

3-2. Panel Board

three screws

(+BVTT 3 x 5)

four screws

(+BVTT 3 x 5)

claw

case

bottom plate

screw

(+BVTT 3 x 5)

six screws

(+B 2 x 6)

PANEL board

front panel section

two claws

screw (+K 3 x 6)

screw

(+K 3 x 6)

two screws

(+BVTT 3 x 5)

wire (flat type)

(16 core) (CN201)

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