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XM-222MK2
SERVICE MANUAL

Canadian Model
AEP Model
UK Model
E Model

Ver 1.1 2002. 03

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 Ω (stereo)
4 – 8Ω (when used as a bridging amplifier)
Maximum outputs
100 W × 2 (at 4 Ω)
222 W (BTL, at 4 Ω)
Rated outputs (supply voltage at 14.4 V)
35 W × 2 (20 Hz – 20 kHz, 0.04% THD, at 4 Ω)
40 W × 2 (20 Hz – 20 kHz, 0.1% THD, at 2 Ω)
80 W (Monaural) (20 Hz – 20 kHz, 0.1% THD,
at 4 Ω)
Frequency response
5 Hz – 80 kHz ( +0 dB)
–3
Harmonic distortion
0.005% or less (at 1 kHz, 4 Ω, 10 W)
Low-passfilter
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 Ω, 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
© 2002. 03

e Vehicle Company
Published by Sony Engineering Corporation

1

XM-222MK2
SECTION 3
DIAGRAMS
3-1. BLOCK DIAGRAM

PRE AMP
IC801 (1/2)

-1

LPF
IC802 (1/2)

GAIN CONTROL
AMP
IC803 (1/2)

6

-1
L (BTL)7

5

7

5

5
6
S801-1
LPF
(80Hz)

7

DIFFERENTIAL
AMP
Q102

SWITCH
Q101

DRIVE AMP
Q104

DRIVE AMP
Q108

BIAS
Q106,107

OFF
CNJ801
INPUT

DIFFERENTIAL
AMP
Q103

PRE AMP
IC801 (2/2)

LPF
IC802 (2/2)
1

3

1

2

3
2
S801-2
LPF
(80Hz)

CNJ802
HI LEVEL

R

B(-14.6V)

1

DIFFERENTIAL
AMP
Q202

SWITCH
Q201

DRIVE AMP
Q204DRIVE AMP
Q208

BTL

POWER AMP
Q210
R

BIAS
Q206,207

OFF
DIFFERENTIAL
AMP
Q203

DRIVE AMP
Q205

DRIVE AMP
Q209

OVERLOAD
DET
Q212

POWER AMP
Q211

15V REG
Q951,952,
D953
PROTECTOR
Q802

DC DET
4 IC851 2

-15V REG
Q953,954,
D954
RECT
D951,952

DC-DC CONVERTER
TRANSFORMER
T901

INVERTER
Q903

1
ERROR

INVERTER
Q904

LD801
POWER/PROTECTOR

2

10

F901
20A

B+
SWITCH
Q902

12

9

B+
(26.2V)

B(-26.2V)

OVERLOAD
DET
Q112

POWER AMP
Q111

OFFSET
DET
Q852,853

MUTE
Q851

B+
(14.6V)

DRIVE AMP
Q109

VR801-2
LEVEL

ON
L

DRIVE AMP
Q105

GAIN CONTROL
AMP
IC803 (2/2)

3

-2
R

POWER AMP
Q110

L
VR801-1
LEVEL

ON

-2

CN802
SPEAKER
OUT

LED
DRIVE
Q803

3+12V

POWER
ON/OFF
Q901
REM

15

ERROR

GND

16
13

THERMAL
Q801

14

• Signal path
: AUDIO

DC-DC CONVERTER
IC901

TH801

D802

7

CN801

7

TH802

XM-222MK2
3-3. SCHEMATIC DIAGRAM • Refer to page 10 for IC Block Diagram and Common Note on Schematic Diagrams.

R114

R116

R118

D101

C856
Q108

Q104
C113

Q107

R124

C119 R138

R133Q110

R137

C120 R139

R122

R119

Q102

CNJ802

Q103

R129
R130

R125
R120

C219 R238

R126

Q106

C114

C220 R239
R237

C115

Q112

R128
C116

R123

R135

Q105
R127

C117
C118
C218
C217

R115
C854

R117

Q109

R121

D102

Q111

C104
C857
C112

CN802
C107

R101
C102 R102

C103

Q101
R105

R106 R107
IC802 (1/2)

IC801(1/2)
C853

C105

C108

R108

C110

R109

VR801

R110

R208

R209

R111

R210

R211

R213

Q207

R224

C211

R205 C209

Q212

R229
C216
R230

R225

Q201

R226

Q206

C214

R235

R228

R223

R220

C207

Q205

R203

R227

R212
C855

R233

C215

R222

R219

Q202
Q203

IC803 (2/2)

IC802 (2/2)

C203
C202 R202...