XM-222MK2

SERVICE MANUAL

Canadian Model

AEP Model

Ver 1.1 2002. 03

UK Model

E Model

SPECIFICATIONS

Circuit system

OTL (output transformerless) circuit Pulse power supply

Inputs

RCA pin jacks

High level input connector Input level adjustment range 0.3 – 6 V (RCA pin jacks), 0.6 – 12 V (High level input) Outputs

Speaker terminals

Speaker impedance

2 – 8 �"Ś (stereo)

4 – 8 �"Ś (when used as a bridging amplifier) Maximum outputs

100 W � 2 (at 4 �"Ś)

222 W (BTL, at 4 �"Ś)

Rated outputs (supply voltage at 14.4 V) 35 W � 2 (20 Hz – 20 kHz, 0.04% THD, at 4 �"Ś) 40 W � 2 (20 Hz – 20 kHz, 0.1% THD, at 2 �"Ś) 80 W (Monaural) (20 Hz – 20 kHz, 0.1% THD, at 4 �"Ś)

Frequency response

5 Hz – 80 kHz ( dB)

+0

–3

Harmonic distortion

0.005% or less (at 1 kHz, 4 �"Ś, 10 W) Low-pass filter

80 Hz, –18 dB/oct

Power requirements

12 V DC car battery

(negative ground)

Power supply voltage

10.5 – 16 V

Current drain

at rated output : 12 A (4 �"Ś, 35 W � 2) Remote input : 1.5 mA

Dimensions

Approx. 205 � 55 � 158 mm (w/h/d) not incl.

projecting parts and controls Mass

Approx. 1.6 kg not incl. accessories Supplied accessories

Mounting screws (4)

High level input cord (1)

Protection cap (1)

Design and specifications are subject to change without notice.

STEREO POWER AMPLIFIER

9-873-557-02

Sony Corporation

2002C0400-1

e Vehicle Company

© 2002. 03

Published by Sony Engineering Corporation 1





XM-222MK2

SECTION 3

DIAGRAMS

3-1. BLOCK DIAGRAM

PRE AMP

LPF

IC801 (1/2)

IC802 (1/2)

GAIN CONTROL

-1

AMP

-1

6

CN802

IC803 (1/2)

7

L (BTL)

5

7

SPEAKER

5

5

DIFFERENTIAL

OUT

SWITCH

DRIVE AMP

DRIVE AMP

POWER AMP

7

AMP

6

Q101

Q104

Q108

Q110

Q102

S801-1

LPF

(80Hz)

L

VR801-1

ON

BIAS

LEVEL

Q106,107

OFF

CNJ801

OVERLOAD

INPUT

DIFFERENTIAL

DRIVE AMP

DRIVE AMP

POWER AMP

DET

AMP

Q105

Q109

Q111

Q112

Q103

PRE AMP

OFFSET

BTL

IC801 (2/2)

LPF

GAIN CONTROL

IC802 (2/2)

DET

-2

AMP

Q852,853

3

-2

IC803 (2/2)

1

R

3

1

2

3

DIFFERENTIAL

SWITCH

DRIVE AMP

DRIVE AMP

POWER AMP

1

AMP

2

Q201

Q204

Q208

Q210

Q202

S801-2

LPF

R

(80Hz)

CNJ802

VR801-2

ON

BIAS

HI LEVEL

L

R

LEVEL

Q206,207

OFF

MUTE

Q851

DIFFERENTIAL

DRIVE AMP

DRIVE AMP

OVERLOAD

POWER AMP

AMP

Q205

Q209

DET

Q211

Q203

Q212

15V REG

B+

Q951,952,

(14.6V)

D953

PROTECTOR

Q802

DC DET

4

B-

-15V REG

IC851

2

(-14.6V)

Q953,954,

D954

F901

CN801

DC-DC CONVERTER

20A

RECT

TRANSFORMER

B+

D951,952

12

SWITCH

T901

INVERTER

+12V

9

Q902

Q903

1

LD801

B+

POWER/

(26.2V)

ERROR

2

PROTECTOR

POWER

ON/OFF

INVERTER

LED

10

3

Q901

Q904

DRIVE

B-

Q803

(-26.2V)

REM

15

ERROR

GND

16

THERMAL

13

14

Q801

�ó Signal path

: AUDIO

DC-DC CONVERTER

IC901

TH801

TH802

D802

7

7





XM-222MK2

3-3. SCHEMATIC DIAGRAM �ó Refer to page 10 for IC Block Diagram and Common Note on Schematic Diagrams.

D101

R118

C856

R114

R116

Q108

Q104

C113

Q107

R124

R133

C119 R138

Q110

Q112

R137

R126

R129

C120 R139

R119

R122

C115

Q102

CNJ802

Q103

Q106

R130

C114

C220 R239

R128

R125

R120

C116

R123

R237

C219 R238

Q105

R135

Q111

R127

R115

Q109

R117

R121

D102

C117

C118

C218

C217

C854

C104

C857

C112

R131

R132

C101

R103

CN802

C107

R101

Q101

C109

C102 R102

C103

R105

D201

R218

R106 R107

C111

R214

R216

IC802 (1/2)

C106

IC803 (1/2)

IC801 (1/2)

Q204

Q208

R112

S801

C858

R860

C853

C105

R104

C213

R861

VR801

R113

R224

Q207

R233

C108

R108

R109

R110

R111

CNJ801

C110

Q210

Q212

C208

C210

R208

R209

R210

R211

R226

R229

R213

Q202

R219

R222

C215

C201

C205

R204

C216

C206

R201

Q203

Q206

R230

IC801 (2/2)

IC803 (2/2)

C214

R235

IC802 (2/2)

R228

R206 R207

C211

R225

Q201

C203

R205

R220

R223

C209

C202 R202

C207

Q205

R203

R236

R136

R227

Q211

R212

R215

R217

C855

C204

R221

D202

Q209

C212

R231

R232

R855

Q951

R954

Q952

R955

D903

T901

R851

D951

Q851

R917

R951

C957

R952

R953

R852

Q903

C907

R915

C951

R916

L951

C953

C955

D953

R853

D852

C956

IC851

R918

R919

C908

C952

C954

D954

C852

R858

R854

D851

Q904

R956 R957

R958

C958

R856

C851

R920

D952

D904

R959

R960

R857

Q953

Q954

Q853

Q852

IC B/D

Q902

R961

C959

R914

R859 C804

R809

R812

LD801

C801

R801

D801

TH801

TH802

R905

R811

R810

Q901

R906

R862

Q802

CN801

R802

R907

D803

IC901

D802

F901

L901

C901

D901

D902

R813

C904

R901

R902

C909

C802

R806

R909

R807

C902

R903

R904

R803

C903

Q801

R814

R913

R912

C905

R805

C803

Q803

C906

R910

R911

R808

C805

PL801

R804

�ó Waveform

1

1V/DIV, 5µsec/DIV

3.4Vp-p

15µsec

9

9

IC901 5





XM-222MK2

Ver 1.1

SECTION 4

EXPLODED VIEW

�ó Semiconductor

NOTE:

THIS NOTE IS COMMON FOR PRINTED WIRING

Location

�ó The mechanical parts with no reference

�ó Color Indication of Appearance Parts BOARDS AND SCHEMATIC DIAGRAMS.

The components identified by Ref. No.

Location

number in the exploded views are not supplied.

Example :

(In addition to this, the necessary note is mark 0 or dotted line with mark.

�ó Items marked �ś*” are not stocked since KNOB, BALANCE (WHITE) ... (RED) D101

G-10

printed in each block.) 0 are critical for safety.

D102

G-9

they are seldom required for routine service.

R

R

Replace only with part number D201

G-7

for schematic diagram:

Some delay should be anticipated Parts Color Cabinet’s Color specified.

D202

G-6

�ó All capacitors are in µF unless otherwise noted. pF: µµF

when ordering these items.

�ó Accessories are given in the last of this parts list.

D801

F-11

50 WV or less are not indicated except for electrolytics Les composants identifiés par une D802

E-11

and tantalums.

marque 0 sont critiques pour D803

F-11

�ó All resistors are in �"Ś and 1/4 W or less unless otherwise la sécurité.



D851

E-10

specified.

Ne les remplacer que par une piéce D852

F-5

�ó 2 : nonflammable resistor.

portant le numéro spécifié.

D901

D-10

D902

D-11

Note:

Note:

D903

D-9

The components identi-

Les composants identifiés par D904

D-8

fied by mark 0 or dotted

une marque 0 sont critiques D951

B-7

line with mark 0 are criti-pour la sécurité.

D952

B-6

cal for safety.

Ne les remplacer que par une D953

D-4

Replace only with part

piéce por tant le numéro

D954

D-3

number specified.

spécifié.

�ó A : B+ Line.

IC801

E-3

�ó B : B– Line.

IC802

F-3

4

�ó Power voltage is dc 14.4V and fed with regulated dc power IC803

H-3

5

supply from +12V and REM terminals.

IC851

E-10

IC901

D-8

�ó Voltage is dc with respect to ground under no-signal condition.

LD801

F-14

�ó Voltages are taken with a VOM (Input impedance 10 M�"Ś).

8

6

10

Voltage variations may be noted due to normal produc-Q101

F-6

10

tion tolerances.

Q102

G-10

11

�ó Waveforms are taken with a oscilloscope.

3

Q103

G-9

Voltage variations may be noted due to normal produc-Q104

G-10

tion tolerances.

Q105

G-9

�ó Circled numbers refer to waveforms.

Q106

I-10

�ó Signal path.

Q107

H-9

F

: AUDIO

Q108

H-10

Q109

H-9

for printed wiring boards: Q110

J-10

11

�ó X : parts extracted from the component side.

8

Q111

J-9

�ó

: Pattern from the side which enables seeing.

Q112

G-9

9

Q201

G-5

2

6

Q202

G-6

F901

Q203

G-6

Q204

G-7

Q205

G-6

Q206

I-6

Q207

H-6

9

Q208

H-7

6

Q209

H-6

1

6

Q210

J-7

�ó IC Block Diagram

Q211

J-6

Q212

G-5

Q801

E-11

IC901 µPC494GS-T1

Q802

E-12

Q803

F-13

Q851

E-10

16

15

14

13

12

11

10

9

Q852

E-12

Q853

E-12

ERROR

REF. REG.

7

Q901

D-10

Q902

D-10

Q903

B-9

Q904

B-10

7

0.1V

Q951

C-4

OSC

ERROR

Q952

C-4

Q953

C-4

1

2

3

4

5

6

7

8

Q954

C-4

Ref. No.

Part No.

Description

Remark

Ref. No.

Part No.

Description

Remark

1

3-240-641-01 PLATE, BOTTOM

7

7-685-545-14 SCREW +BTP 3X6 TYPE2 N-S

2

3-238-672-01 PANEL, FRONT

8

3-240-642-01 HEAT SINK (SUB 2CH) 3

3-238-671-01 HEAT SINK (CHINESE MADE) 9

3-225-183-01 SCREW (+PSW.TT.3XL) 3

3-238-671-11 HEAT SINK (JAPAN MADE) 10

3-225-184-01 SCREW (+PS.TT.3X6) 4

3-238-673-01 PANEL, REAR

11

3-912-432-01 SCREW (+–B)

5

A-3274-223-A AMP BOARD, COMPLETE

0 F901

1-532-732-11 FUSE (BLADE TYPE) (AUTO FUSE) 20A 6

7-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3

10

10





Document Outline


Front Page Front Page





Operating Instructions Connections





Disassembly Disassembly flow

Bottom plate

Heat sink

AMP board





Block Diagrams Block diagram





MCB Layouts Printed wiring board





Circuit Diagrams Schematic diagram





Semiconductor Block Diagrams IC block diagram





Exploded Views Complete