HCD-CPX22 NXM3 v1.1.pdf

SERVICE MANUAL

HCD-CPX22/NXM3

US Model

HCD-CPX22

AEP Model

HCD-CPX22/NXM3

UK Model

E Model

HCD-CPX22

Ver. 1.1 2005.05

• HCD-CPX22 is the Amplifier, CD player,

tape deck and tuner section in CMT-CPX22.

• HCD-NXM3 is the Amplifier, CD player,

tape deck and tuner section in MHC-NXM3.

Photo : HCD-CPX22

Model Name Using Similar Mechanism

NEW

CD Mechanism Type

CDM81B-F1BD81A

Section

Base Unit Name

BU-F1BD81A

Optical Pick-up Name

KSM-215DCP/C2NP

Section

TAPE

Model Name Using Similar Mechanism

NEW

SPECIFICATIONS

Amplifier section

For the U.S.A. model

AUDIO POWER SPECIFICATIONS

HCD-CPX22

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 4-ohm loads, both channels driven, from 120 – 10,000 Hz;

rated 100 watts per channel minimum RMS power, with no more

than 10% total harmonic distortion from 250 milliwatts to rated

output.

SPEAKER:

Use only the supplied speakers

SS-CPX22

(HCD-CPX22)

SS-NXM3

(HCD-NXM3)

CD player section

System

Compact disc and digital audio system

Laser

Semiconductor laser

(λ=770 – 810 nm)

Emission duration: continuous

Other models:

The following measured at AC 120 – 127/220 – 240 V, 50/60 Hz

(Saudi Arabian model only)

The following measured at AC 230 V, 50/60 Hz (European and

Russian models only)

The following measured at AC 120/220 – 240 V, 50/60 Hz (except

for European, Russian and Saudi Arabian models)

Frequency response

2 Hz – 20 kHz (

0.5 dB)

Tape deck section

Recording system

4-track 2-channel stereo

Frequency response

50 – 13,000 Hz (±3 dB), using Sony

TYPE I cassettes

– Continued on next page –

DIN power output (rated): 75 + 75 watts (4 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

100 + 100 watts

(4 ohms at 1 kHz, 10% THD)

HCD-CPX22

MICRO Hi-Fi COMPONENT SYSTEM

HCD-NXM3

MiNi Hi-Fi COMPONENT SYSTEM

Inputs

VIDEO/MD IN (phono jacks): Sensitivity 250/450 mV, impedance

47 kilohms

Outputs

DIGITAL (OPTICAL) OUT: Optical Wavelength: 660 nm

PHONES (mini jack):

accepts headphones with an

impedance of 8 ohms or more

9-877-828-02

2005E02-1

Sony Corporation

Audio Group

Published by Sony Engineering Corporation

HCD-CPX22/NXM3

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range

U.S.A. model:

SAFETY CHECK-OUT

87.5 – 108.0 MHz (100-kHz step)

After correcting the original service problem, perform the following

safety checks before releasing the set to the customer:

Check the antenna terminals, metal trim, “metallized” knobs, screws,

and all other exposed metal parts for AC leakage. Check leakage as

described below.

Russian model:

65.0 – 74.0 MHz (10-kHz step)

(There is no stereo effect)

87.5 – 108.0 MHz (50-kHz step)

LEAKAGE

The AC leakage from any exposed metal part to earth ground and

from all exposed metal parts to any exposed metal part having a

return to chassis, must not exceed 0.5 mA (500 microamperes).

Leakage current can be measured by any one of three methods.

Other models:

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

Pan-American model: 530 – 1,710 kHz

(with the tuning interval set at 10 kHz)

531 – 1,710 kHz

(with the tuning interval set at 9 kHz)

European, Russian and Saudi Arabian models:

531 – 1,602 kHz

(with the tuning interval set at 9 kHz)

1. A commercial leakage tester, such as the Simpson 229 or RCA

WT-540A. Follow the manufacturers’ instructions to use these

instruments.

2. A battery-operated AC milliammeter. The Data Precision 245

digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a

VOM or battery-operated AC voltmeter. The “limit” indication

is 0.75 V, so analog meters must have an accurate low-voltage

scale. The Simpson 250 and Sanwa SH-63Trd are examples

of a passive VOM that is suitable. Nearly all battery operated

digital multimeters that have a 2V AC range are suitable. (See

Fig. A)

Other models:

531 – 1,602 kHz

(with the tuning interval set at 9 kHz)

530 – 1,710 kHz

(with the tuning interval set at 10 kHz)

Antenna

AM loop antenna

Antenna terminals

External antenna terminal

Intermediate frequency

450 kHz

General

Power requirements

U.S.A. model: 120 V AC, 60 Hz

European and Russian models:

230 V AC, 50/60 Hz

To Exposed Metal

Parts on Set

Saudi Arabian model:

120 – 127 V or 220 – 240 V AC,

50/60 Hz

Adjustable with voltage selector

Voltmeter

(0.75 V)

0.15

1.5 k

Ω

Other models:

120 V, 220 – 240 V AC, 50/60 Hz

Adjustable with voltage selector

Power consumption

U.S.A. model: 65 watts

European and Russian models: 65 watts

0.3 watts (in Power Saving mode)

Other models: 65 watts

Dimensions (w/h/d) incl. projecting parts and controls

Amplifier/Tuner/Tape/CD section:

Approx. 230 x 292 x 355 mm

Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

Mass

Amplifier/Tuner/Tape/CD section:

Approx. 6.1 kg

Supplied accessories

Remote Commander (1)

Size AA (R6) batteries (2)

AM loop antenna (1)

FM lead antenna (1)

Speaker pads (8)

Speaker cords

Design and specifications are subject to change without notice.

HCD-CPX22/NXM3

TABLE OF CONTENTS

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

7-4. Block Diagram – Main Section – ................................... 24

7-5. Block Diagram – S-Master Section – ............................. 25

7-6. Printed Wiring Board – BD Board – .............................. 26

7-7. Schematic Diagram – BD Board – ................................. 27

7-8. Printed Wiring Board – CD Mechanism Board – ........... 28

7-9. Schematic Diagram – CD Mechanism Board – ............. 29

7-10. Printed Wiring Boards – Main Board – .......................... 30

7-11. Schematic Diagram – Main Board (1/3) – ..................... 31

7-12. Schematic Diagram – Main Board (2/3) – ..................... 32

7-13. Schematic Diagram – Main Board (3/3) – ..................... 33

7-14. Printed Wiring Boards – Panel Board – ......................... 34

7-15. Schematic Diagram – Panel Board – ............................... 35

7-16. Printed Wiring Board – Disc SW, Vol, HP Board – ....... 36

7-17. Schematic Diagram – Disc SW, Vol, HP Board – .......... 37

7-18. Printed Wiring Board – S-Master Board – ..................... 38

7-19. Schematic Diagram – S-Master Board – ........................ 39

7-20. IC Block Diagram ........................................................... 40

7-21. IC Pin Function Description ............................................ 41

2. GENERAL

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

3. DISASSEMBLY

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

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

3-3. Main Board, Front Panel Section .................................... 8

3-4. Tape Mechanism Deck .................................................... 9

3-5. Panel Board ..................................................................... 9

3-6. Back Panel ....................................................................... 10

3-7. CD Mechanism Deck (CDM81B-F1BD81A) ................. 10

3-8. S-Master Board ................................................................ 11

3-9. Tray .................................................................................. 11

3-10. M761 (LD/ST Motor), M762 (BU U/D Motor) .............. 12

3-11. Base Unit (BU-F1BD81A) .............................................. 12

3-12. BD Board ......................................................................... 13

8. EXPLODED VIEWS

8-1. Main Section .................................................................... 47

8-2. Front Panel Section ......................................................... 48

8-3. Chassis Section ................................................................ 49

8-4. CD Mechanism Deck Section-1

(CDM81B-F1BD81A) .................................................... 50

8-5. CD Mechanism Deck Section-2

(CDM81B-F1BD81A) .................................................... 51

8-6. CD Mechanism Deck Section-3

(CDM81B-F1BD81A) .................................................... 52

4. TEST MODE .............................................................. 14

5. MECHANICAL ADJUSTMENTS ....................... 17

6. ELECTRICAL ADJUSTMENTS

Deck section .................................................................... 17

CD Section ...................................................................... 18

7. DIAGRAMS

7-1. Circuit Board Location .................................................... 21

7-2. Block Diagram – CD Servo Section – ............................ 22

7-3. Block Diagram – Tuner/Tape Deck Section – ................ 23

9. ELECTRICAL PARTS LIST ................................ 53

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.

SAFETY-RELATED COMPONENT WARNING!!

This appliance is classified as

a CLASS 1 LASER product.

This label is located on the rear

exterior.

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-CPX22/NXM3

SECTION 1

SERVICING NOTES

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK

OR BASE UNIT

• MODEL IDENTIFICATION

– Back Panel –

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 pick-

up block. Therefore, when checking the laser diode emission, observe

from more than 30 cm away from the objective lens.

PART No.

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.

MODEL

PART No.

AEP, UK models

4-253-358-0[]

•Abbreviation

E3 : 240 V AC Area in E model

E51 : Chilean and Peruvian model

EA : Saudi Arabia model

RU : Russian model

RU model

4-253-358-1[]

E3 model

4-253-358-2[]

E51 model

4-253-358-3[]

US model

4-253-358-4[]

EA model

4-253-358-5[]

• SERVICE POSITION FOR TAPE MECHANISM DECK

CN301

Jig (J-2501-270-A)

CN302

Jig (J-2501-271-A)

tape mechanism deck

HCD-CPX22/NXM3

SECTION 2

GENERAL

This section is extracted

from instruction manual.

LOCATING THE CONTROLS

List of butt on locations and reference pages

Main u nit

ALPHABETICAL ORDER

BUTTON DESCRIPTIONS

A – O

P – Z

?/1 (power) 1

nN (play) 5

X (pause) 6

x (stop) 7

CD Z (eject) 8

.m/M> (rewind/fast

forward, go back/go forward)

TAPE Z B(eject) qf

A TAPE Z (eject) qk

z START wa

ALBUM +/– qa

BASS control w;

CD wk

CD SYNC ws

Deck A qj

Deck B qg

DIMMER wd

DISC 1 – 5 3

Disc tray 9

DISPLAY wf

Display window 4

DSGX qs

PHONES jack qh

Remote sensor 2

TAPE A/B wh

TREBLE control ql

TUNER/BAND wj

TUNING +/– 0

VIDEO/MD wg

VOLUME control qd

12 3 4

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