Sony XM-604-EQ Service manual

XM-404EQX/604EQX
SERVICE MANUAL
Photo : XM-604EQX
SPECIFICATIONS
AUDIO POWER SPECIFICATIONS (US, Canadian model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION 40 (404EQX), 60 (604EQX) watts per channel minimum continuous average power into 4 ohms, four channels driven from 20 Hz to 20 kHz with no more than 0.04% total harmonic distortion per Car Audio Ad Hoc Committee standards.
Circuit system OTL (output transformerless) circuit
Pulse power supply
Inputs RCA pin jacks
High level input connector
Outputs Speaker terminals Speaker impedance 2 – 8 (stereo)
4 – 8 (when used as a bridging amplifier)
Maximum outputs XM-404EQX:
Four speakers: 80 watts × 4 (at 4 ) Three speakers: 80 watts × 2 + 200 watts × 1 (at 4 ) Two speakers: 200 watts × 2 (at 4 ) XM-604EQX: Four speakers: 120 watts × 4 (at 4 ) Three speakers: 120 watts × 2 + 300 watts × 1 (at 4 ) Two speakers: 300 watts × 2 (at 4 )
Rated outputs (supply voltage at 14.4 V)
XM-404EQX: Four speakers: 40 watts × 4 (20 Hz – 20 kHz, 0.04% THD, at 4 ) 50 watts × 4 (20 Hz – 20 kHz, 0.1% THD, at 2 ) Two speakers: 100 watts × 2 (20 Hz – 20 kHz, 0.1% THD, at 4 ) XM-604EQX: Four speakers: 60 watts × 4 (20 Hz – 20 kHz, 0.04% THD, at 4 ) 75 watts × 4 (20 Hz – 20 kHz, 0.1% THD, at 2 ) Two speakers: 150 watts × 2 (20 Hz – 20 kHz, 0.1% THD, at 4 )
US Model
Canadian Model
AEP Model
UK Model
E Model
Frequency response 5 Hz – 100 kHz ( dB) Harmonic distortion 0.005% or less (at 1 kHz, 4 ) Input level adjustment range
0.2 – 4.0 V (RCA pin jacks)
0.4 – 8.0 V (High level input) High-pass filter 50 – 200 Hz, –12 dB/oct Low-pass filter 50 – 200 Hz, –12 dB/oct Equalizer 50 Hz, 200 Hz, 800 Hz, 3.2 kHz,
12.8 kHz
±12 dB
Power requirements 12 V DC car battery
(negative ground) Power supply voltage 10.5 – 16 V Current drain At rated output: 23 A
Remote input: 1.5 mA Dimensions Approx. 260 × 55 × 320 mm
(w/h/d) (10
incl. projecting parts and controls Mass XM-404EQX:
Approx. 3.2 kg (7 lb. 1 oz.) not incl.
accessories
XM-604EQX:
Approx. 3.3 kg (7 lb. 4 oz.) not incl.
accessories Supplied accessories Mounting screws (4), Terminal cap (1)
Design and specifications are subject to change without notice.
+0 –3
1/4 × 2 1/4 × 12 5/8 in.) not
STEREO POWER AMPLIFIER
MICROFILM
– 1 –
TABLE OF CONTENTS
1. GENERAL
Location and Function of Controls.......................................... 3
Connections ............................................................................. 4
2. DISASSEMBLY
2-1. Bottom Plate........................................................................ 6
2-2. Panel (A) ............................................................................. 6
2-3. Panel (B)..............................................................................7
2-4. AMP Board ......................................................................... 7
2-5. Control Panel Block ............................................................ 8
3. DIAGRAMS
3-1. Block Diagram .................................................................... 9
3-2. Printed Wiring Board –AMP Section–.............................. 13
3-3. Schematic Diagram –AMP Section– ................................ 15
3-4. Schematic Diagram –EQ Section–.................................... 17
3-5. Printed Wiring Board –EQ Section–................................. 17
3-6. Schematic Diagram –IND Section– .................................. 19
3-7. Printed Wiring Board –IND Section– ............................... 20
3-8. Schematic Diagram –LED Section– ................................. 21
3-9. Printed Wiring Board –LED Section–............................... 21
4. EXPLODED VIEWS
4-1. Heat Sink Section .............................................................. 22
4-2. Control Panel Section........................................................ 23
5. ELECTRICAL PARTS LIST ........................................ 24
Notes on Chip Component Replacement
Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
– 2 –
SECTION 1

GENERAL

This section is extracted from XM-604EQX’s instruction manual.
– 3 –
– 4 –
– 5 –
4
SECTION 2
)

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order given.
2-1. BOTTOM PLATE
2
BTP 3x4
1
BTP 3x5
4
bottom plate
3
BTP 3x
2-2. PANEL (A)
1
BTP 3x8
3
panel (A
2
BTP 3x8
– 6 –
2-3. PANEL (B)
)
2-4. AMP BOARD
5
screw (3x8) (CNZ-N)
4
CNP804
2
BTP 3x8
1
BTP 3x8
3
panel (B
2-5. CONTROL PANEL BLOCK
2
claw
5
CNJ807
7
control panel block
1
claw
3
CNP806
6
AMP board
4
BVTP 3x12
6
CNJ808
4
CNP807
1
BTP 3x12
2
BTP 3x12
3
fuse (30A): XM-404EQX (40A): XM-604EQX
– 7 – – 8 –
XM-404EQX/604EQX
3-1. BLOCK DIAGRAM
INPUT
REAR
(MONO)
HIGH LEVEL INPUT
SECTION 3

DIAGRAMS

CNJ801
L
R
L
R
–3
–4
CN803
(REAR)
R-CH
CN805
SPEAKER OUT
REAR
L
L+R
R
MONO
04
INPUT
FRONT
L
(MONO)
L
HIGH LEVEL INPUT
R
R
+12V
REMOTE
Signal path : AUDIO
CNJ801-1
CN802
CNJ801-2
CN801
F901
+
+
+
+
+
Q901
POWER ON/OFF
2 3
Q902 , 903
B+
SWITCH
Q805
LED
DRIVE
SWITCH
LINE AMP
IC101
+
R-CH
R-CH
LD825
CURRENT
B+
OVER
1
SWITCH
5
+
6
EQ
IC102
Q806
LED
DRIVE
LD826 OFFSET
POWER/PROTECTOR
LPF
IC103 (1/2)
VR101-1
7
VR101 FILTER
(FRONT)
Q807
LED
DRIVE
SWITCH
B+
76
B+
B+
LD827
THERMAL
VR101-2
OFF HPF
Q810
LPF
IC103 (2/2)
LPF
S101
EQ AMP
FILTER
(FRONT)
IC104-108
DC DET
IC902
42
31
D801
TH802
TH801
16 10 9
3
12
1
VR102 50Hz VR103 200Hz VR104 800Hz VR105 3.2kHz VR106 12.8kHz
EQUALIZER
(FRONT)
Q809, 812
PROTECT
LATCH
(CURRENT CHECK)
Q808, 811
PROTECT
LATCH
(CURRENT CHECK)
Q905, 906
ON/OFF
CONTROL
(FRONT)
EQ BUFFER
IC109 +
3
2
DRIVER
DC-DC CONVERTER
CONTROL
IC901
OSC
1
B– (AMP) B+(AMP)
Q907
ON/OFF
DRIVE
Q909
ON/OFF
DRIVE
Q910
ON/OFF
DRIVE
Q908
ON/OFF
DRIVE
12
VCC
B+
S102
DIRECT
(FRONT)
OFF
ON
604EQX
604EQX
BUFFER
IC110
Q813, 814
LINE
CONTROL
DC-DC CONVERTER
TRANSFORMER
T901
IC802
LD801 – 824
LEVEL
METER
R-CH
CN804
SPEAKER OUT
FRONT
L
R
MONOL+R
Q801 – 804
LED
DRIVE
SIGNAL METER AMP
LINE
SWITCH
Q112
13
VR107 LEVEL
(FRONT)
Q904
D912
+6V REG
D903 D904
D901 D902
IC801
Q101 – 106
DRIVER
Q111
OVER LOAD
DET
+6V
Q911, 913
Q912, 914
76 1
+15V
REG
–15V
REG
AC1 IN
Q107 – 110
POWER
AMP
12 – 15 16 – 21
D4–D1 O6–O1
LED CONTROL
(FRONT)
Q815-816
VOLTAGE
CHECK
B+(AMP)
+15V
–15V
B–(AMP)
B+(PRE)
B–(PRE)
– 9 – – 10 –
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