Sony XM-222MK2 Service Manual
XM-222MK2
SERVICE MANUAL
Ver 1.1 2002. 03
SPECIFICATIONS
Circuit system OTL (output transformerless) circuit Pulse
Inputs RCA pin jacks
Input level adjustment range
Outputs Speaker terminals
Speaker impedance 2 – 8 Ω (stereo)
Maximum outputs 100 W × 2 (at 4 Ω)
Rated outputs (supply voltage at 14.4 V)
Frequency response 5 Hz – 80 kHz ( dB)
Harmonic distortion 0.005% or less (at 1 kHz, 4 Ω, 10 W)
Low-pass filter 80 Hz, –18 dB/oct
Power requirements 12 V DC car battery
Power supply voltage 10.5 – 16 V
Current drain at rated output : 12 A (4 Ω, 35 W × 2)
Dimensions Approx. 205 × 55 × 158 mm (w/h/d) not incl.
Mass Approx. 1.6 kg not incl. accessories
Supplied accessories Mounting screws (4)
Design and specifications are subject to change without
notice.
power supply
High level input connector
0.3 – 6 V (RCA pin jacks),
0.6 – 12 V (High level input)
4 – 8 Ω (when used as a bridging amplifier)
222 W (BTL, at 4 Ω)
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)
(negative ground)
Remote input : 1.5 mA
projecting parts and controls
High level input cord (1)
Protection cap (1)
+0
–3
Canadian Model
AEP Model
UK Model
E Model
9-873-557-02
2002C0400-1
© 2002. 03
STEREO POWER AMPLIFIER
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation
1
3-1. BLOCK DIAGRAM
XM-222MK2
SECTION 3
DIAGRAMS
CNJ801
INPUT
-1
L (BTL)
-2
R
CNJ802
HI LEVEL
-1
-2
LR
B+
(14.6V)
B-
(-14.6V)
B+
(26.2V)
B-
(-26.2V)
15V REG
Q951,952,
D953
-15V REG
Q953,954,
D954
RECT
D951,952
PRE AMP
IC801 (1/2)
6
5
PRE AMP
IC801 (2/2)
3
2
7
1
LPF
IC802 (1/2)
5
LPF
IC802 (2/2)
3 1
DC-DC CONVERTER
TRANSFORMER
T901
7
S801-1
LPF
(80Hz)
ON
OFF
S801-2
LPF
(80Hz)
ON
OFF
GAIN CONTROL
AMP
IC803 (1/2)
5
6
GAIN CONTROL
AMP
IC803 (2/2)
3
2
INVERTER
Q903
INVERTER
Q904
7
VR801-1
LEVEL
1
VR801-2
LEVEL
SWITCH
Q101
SWITCH
Q201
MUTE
Q851
DIFFERENTIAL
DIFFERENTIAL
DIFFERENTIAL
DIFFERENTIAL
4 2
9
ERROR
10
ERROR
13 14
DC-DC CONVERTER
IC901
AMP
Q102
AMP
Q103
AMP
Q202
AMP
Q203
DC DET
IC851
CN802
SPEAKER
DRIVE AMP
Q104
Q106,107
DRIVE AMP
Q105
DRIVE AMP
Q204
Q206,207
DRIVE AMP
Q205
12
1
2
THERMAL
Q801
LED
DRIVE
Q803
3
15
16
BIAS
BIAS
DRIVE AMP
Q108
DRIVE AMP
Q109
DRIVE AMP
Q208
DRIVE AMP
Q209
LD801
POWER/
PROTECTOR
POWER AMP
Q110
POWER AMP
Q111
POWER AMP
Q210
POWER AMP
Q211
B+
SWITCH
Q902
POWER
ON/OFF
Q901
OVERLOAD
DET
Q112
OFFSET
DET
Q852,853
OVERLOAD
DET
Q212
PROTECTOR
Q802
• Signal path
F901
20A
OUT
L
BTL
R
CN801
+12V
REM
GND
: AUDIO
TH801
TH802
D802
77
Loading...