Sony XM-222MK2 User manual

1
SERVICE MANUAL
Canadian Model
AEP Model
UK Model
E Model
XM-222MK2
STEREO POWER AMPLIFIER
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 – 8 Ω(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 14.4V)
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 ( 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
(negative ground)
Power supply voltage 10.5 – 16 V
Current drain at rated output : 12A (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.
SPECIFICATIONS
+0
–3
Ver 1.1 2002. 03
9-873-557-02
2002C0400-1
© 2002. 03
Sony Corporation
e Vehicle Company
Published by Sony Engineering Corporation

77
XM-222MK2
3-1. BLOCK DIAGRAM
SECTION 3
DIAGRAMS
DIFFERENTIAL
AMP
Q102
DRIVE AMP
Q104
S801-1
LPF
(80Hz)
DRIVE AMP
Q108
DIFFERENTIAL
AMP
Q103
DRIVE AMP
Q105
DRIVE AMP
Q109
POWER AMP
Q110
POWER AMP
Q111
BIAS
Q106,107
7
DIFFERENTIAL
AMP
Q202
DRIVE AMP
Q204
SWITCH
Q201
MUTE
Q851
DRIVE AMP
Q208
DIFFERENTIAL
AMP
Q203
DRIVE AMP
Q205
DC DET
IC851
DRIVE AMP
Q209
POWER AMP
Q210
POWER AMP
Q211
OVERLOAD
DET
Q212
POWER/
PROTECTOR
LD801
1
4 2
12
1
3
16
13 14
B+
SWITCH
Q902
POWER
ON/OFF
Q901
15V REG
Q951,952,
D953
INVERTER
Q903
INVERTER
Q904
3
2
7
5
CN802
SPEAKER
OUT
CN801
BIAS
Q206,207
9
10 LED
DRIVE
Q803
TH801
D802
TH802
3
2
6
5
6
ON
OFF
S801-2
LPF
(80Hz)
ON
OFF
PRE AMP
IC801 (1/2)
PRE AMP
IC801 (2/2)
LPF
IC802 (1/2) GAIN CONTROL
AMP
IC803 (1/2)
GAIN CONTROL
AMP
IC803 (2/2)
VR801-1
LEVEL
CNJ802
LPF
IC802 (2/2)
B+
(14.6V)
B-
(-14.6V)
B+
(26.2V)
B-
(-26.2V)
DC-DC CONVERTER
TRANSFORMER
T901
RECT
D951,952
2
15
ERROR
ERROR
DC-DC CONVERTER
IC901
THERMAL
Q801
F901
20A
+12V
HI LEVEL
INPUT
REM
GND
L
LR
R
BTL
-2
R
-1
L (BTL)
OFFSET
DET
Q852,853
OVERLOAD
DET
Q112
1
-2
-1
CNJ801
7
SWITCH
Q101
3 1
5
VR801-2
LEVEL
PROTECTOR
Q802
-15V REG
Q953,954,
D954
• Signal path
: AUDIO

99
XM-222MK2
3-3. SCHEMATIC DIAGRAM •Refer to page 10 for IC Block Diagram and Common Note on Schematic Diagrams.
C119
C120
C219
C220
R138
R139
R239
R238
C117
C118
C218
C217
R137
R237
C858
C101
C201
C202
C106
C206
C853 C105
C205
C103
C203
C854
C855
C104
C204
C107
C108
C208
C207
C111
C211
R861 R860
R101
R102
R201
R202
R103
R104
R204
R203
R106 R107 R105
R108 R110 R111R109
R112
R113
R213
R211
R212
R210R209R208
R205
R207R206
Q101
Q201
C102
S801
Q107
Q108
Q109
Q110
Q111
Q112
R115 R117 D102 R121
C114
R120
R119
R114 R116 D101
C113
R122
R123
R124
C115
R125
R126
R127
R129
R130
R133
R118
Q105
Q104
Q102
Q103
C112 R131 R132
R215
R214 R216
Q202
D201
C213
R218
Q204
R219
C214
R220
Q205
R217
D202
C212 R231
R221
R232
R223
R222
R224 Q207
C215
R225
Q208
R226
Q210
R229
R233
Q212
R230
R227 Q211
Q209
R915
R918
R916
R919
R917
R920
D903
D904
C907
C908
C951
C952
C953
C954
R951
R956
R952 R953
R957 R958
C955
C956
D953
D954
C957
C958
R954 R955
R959 R960
Q852
R856
R857
C852 R858
R851
R852
R853
R854
D852
D851
Q853
Q851
R901 R902
R903 R904
Q901
D901
R905
R906
D902
R862
Q902
C801 R801
R803 R814
R802
D803
D801
R804
IC901
R913 R912
C909
R914
R909
C903
C905
R910
D802
TH801 TH802
R805
R806
R808
R807
C803
R809
R810 R811
R812
Q803
R813
LD801R859
C116
C216
R235
R236 R136
R135
C805
PL801
R855
C901
R961 C959
CNJ802
CNJ801
IC801 (1/2)
IC801 (2/2)
IC802 (1/2)
IC802 (2/2)
IC803 (1/2)
IC803 (2/2)
VR801
C856
C857
R128
CN802
Q106
Q206Q203
Q951 Q952
Q953 Q954
D952
Q903
Q904
D951
T901
IC851
Q802
C906
R911
CN801
Q801
R907
F901
C902
R228
C109
C110
C210
C209
L951
C851
C802
C904
C804
L901
IC B/D
•Waveform
IC901 5
11V/DIV, 5µsec/DIV
15µsec
3.4Vp-p

10 10
XM-222MK2
IC901 µPC494GS-T1
16 15 14 13 12 11 10 9
1 2 3 4 5 6 7 8
OSC
REF. REG.
ERROR
ERROR
0.1V
• IC Block Diagram
•Semiconductor
Location THIS NOTE IS COMMON FOR PRINTEDWIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
•All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
•All resistors are in Ωand 1/4W or less unless otherwise
specified.
•2: nonflammable resistor.
•A: B+ Line.
•B: B– Line.
•Power voltageis dc 14.4Vandfed withregulated dc power
supply from +12V and REM terminals.
•Voltage is dc with respect to ground under no-signal
condition.
•Voltagesare takenwithaVOM (Inputimpedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•Circled numbers refer to waveforms.
•Signal path.
F: AUDIO
for printed wiring boards:
•X: parts extracted from the component side.
•: Pattern from the side which enables seeing.
D101 G-10
D102 G-9
D201 G-7
D202 G-6
D801 F-11
D802 E-11
D803 F-11
D851 E-10
D852 F-5
D901 D-10
D902 D-11
D903 D-9
D904 D-8
D951 B-7
D952 B-6
D953 D-4
D954 D-3
IC801 E-3
IC802 F-3
IC803 H-3
IC851 E-10
IC901 D-8
LD801 F-14
Q101 F-6
Q102 G-10
Q103 G-9
Q104 G-10
Q105 G-9
Q106 I-10
Q107 H-9
Q108 H-10
Q109 H-9
Q110 J-10
Q111 J-9
Q112 G-9
Q201 G-5
Q202 G-6
Q203 G-6
Q204 G-7
Q205 G-6
Q206 I-6
Q207 H-6
Q208 H-7
Q209 H-6
Q210 J-7
Q211 J-6
Q212 G-5
Q801 E-11
Q802 E-12
Q803 F-13
Q851 E-10
Q852 E-12
Q853 E-12
Q901 D-10
Q902 D-10
Q903 B-9
Q904 B-10
Q951 C-4
Q952 C-4
Q953 C-4
Q954 C-4
Ref.No. Location
SECTION 4
EXPLODEDVIEW
NOTE:
•The mechanical parts with no reference
number in the exploded views are not supplied.
•Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
•Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
•Accessories are given in the last of this parts list.
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
RR
13-240-641-01 PLATE, BOTTOM
23-238-672-01 PANEL, FRONT
33-238-671-01 HEAT SINK (CHINESE MADE)
33-238-671-11 HEAT SINK (JAPAN MADE)
43-238-673-01 PANEL, REAR
5A-3274-223-A AMP BOARD, COMPLETE
67-685-646-79 SCREW +BVTP 3X8 TYPE2 IT-3
77-685-545-14 SCREW +BTP 3X6 TYPE2 N-S
83-240-642-01 HEAT SINK (SUB 2CH)
93-225-183-01 SCREW (+PSW.TT.3XL)
10 3-225-184-01 SCREW (+PS.TT.3X6)
11 3-912-432-01 SCREW (+–B)
0F901 1-532-732-11 FUSE (BLADE TYPE) (AUTO FUSE) 20A
The components identified by
mark 0or dotted line with mark.
0are critical for safety.
Replace only with part number
specified.
Les composants identifiés par une
marque 0sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
1
2
3
4
5
7
7
10
11 10
9
F901
86
6
6
8
9
6
11
Note:
The components identi-
fied by mark 0or dotted
linewith mark 0are criti-
cal for safety.
Replace only with part
number specified.
Note:
Lescomposants identifiés par
une marque 0sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ver 1.1