Read Sony XM-GS4 Service Manual online
SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
XM-GS4
SPECIFICATIONS
STEREO POWER AMPLIFIER
9-896-203-01
2015H33-1
©
2015.08
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Ver. 1.0 2015.08
AUDIO POWER SPECIFICATIONS
CEA2006 Standard
Power Output: 70 Watts RMS × 4 at
4 Ohms < 1% THD+N
SN Ratio: 93 dBA
(reference: 1 Watt into 4 Ohms)
Power Output: 70 Watts RMS × 4 at
4 Ohms < 1% THD+N
SN Ratio: 93 dBA
(reference: 1 Watt into 4 Ohms)
Circuit system
OTL (output transformerless) circuit,
Pulse power supply
Pulse power supply
Inputs
RCA pin jacks,
High level input connector
High level input connector
Input level adjustment range
0.3 – 6 V (RCA pin jacks),
3 – 12 V (High level input)
3 – 12 V (High level input)
Outputs
Speaker terminals
Speaker impedance
2 – 8
: (stereo),
4 – 8
: (when used as a bridging amplifier)
Maximum output
2 Speakers: 350 W × 2 (at 4
:)
4 Speakers: 150 W × 4 (at 4
:)
Rated output
(supply voltage at 14.4 V, 20 Hz – 20 kHz, 1 %
THD)
2 Speakers: 160 W × 2 (at 4
THD)
2 Speakers: 160 W × 2 (at 4
:)
4 Speakers: 80 W × 4 (at 2
:),
70 W × 4 (at 4
:)
Frequency response
10 Hz – 100 kHz (
dB)
Harmonic distortion
0.05 % or less (at 1 kHz, 4
:)
Low-pass filter
50 – 300 Hz, 12 dB/oct
High-pass filter
50 – 300 Hz, 12 dB/oct
Subsonic filter
6 – 70 Hz, 12 dB/oct
Low boost
0 – 10 dB (40 Hz)
Power requirements
12 V DC car battery (negative ground (earth))
Power supply voltage
10.5 – 16 V
Current drain
At rated output: 33 A (4
:, 70 W × 4)
Remote input: 1 mA
Dimensions
Approx. 272 × 51 × 202 mm (10
3
/
4
× 2
1
/
8
× 8 in)
(w/h/d) not incl. projecting parts and controls
272 mm (10
3
/
4
in)
162 mm (6
1
/
2
in)
251 mm (10 in)
149.5 mm (6 in)
20 2 mm (8 in)
51 mm (2
149.5 mm (6 in)
20 2 mm (8 in)
51 mm (2
1
/
8
in)
Mass
Approx. 2.7 kg (6 lb) not incl. accessories
Package contents:
Main unit (1)
Mounting screws (4)
High level input cord (1)
Mounting screws (4)
High level input cord (1)
Design and specifications are subject to change
without notice.
without notice.
+0.5
−3.0
−3.0
XM-GS4
2
TABLE OF CONTENTS
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.
aged by heat.
1.
SERVICING NOTES
.............................................
3
2. GENERAL
..................................................................
4
3. DISASSEMBLY
3-1. Disassembly
Flow
........................................................... 6
3-2. Bottom Plate Block ......................................................... 6
3-3. Insulating Sheet, MAIN Board Block ............................. 7
3-4. Front Panel, MAIN Board .............................................. 7
3-5. CONTROL Board Block ................................................ 8
3-3. Insulating Sheet, MAIN Board Block ............................. 7
3-4. Front Panel, MAIN Board .............................................. 7
3-5. CONTROL Board Block ................................................ 8
4. DIAGRAMS
4-1. Block
Diagram
................................................................ 9
4-2. Printed
Wiring
Board
- MAIN Board (Component Side) - ................................ 11
4-3. Printed
Wiring
Board
- MAIN Board (Conductor Side) - .................................. 12
4-4. Schematic Diagram - MAIN Board (1/2) - ..................... 13
4-5. Schematic Diagram - MAIN Board (2/2) - ..................... 14
4-6. Printed Wiring Boards - CONTROL/LED Boards - ....... 15
4-7. Schematic Diagram - CONTROL/LED Boards - ........... 16
4-5. Schematic Diagram - MAIN Board (2/2) - ..................... 14
4-6. Printed Wiring Boards - CONTROL/LED Boards - ....... 15
4-7. Schematic Diagram - CONTROL/LED Boards - ........... 16
5.
EXPLODED VIEWS
5-1. Heat Sink (Main) Section ............................................... 17
5-2. MAIN Board Section ...................................................... 18
5-3. CONTROL Board Section .............................................. 19
5-2. MAIN Board Section ...................................................... 18
5-3. CONTROL Board Section .............................................. 19
6.
ELECTRICAL PARTS LIST
.............................. 20
Accessories are given in the last of the electrical parts list.
XM-GS4
3
SECTION 1
SERVICING NOTES
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher
• Unleaded solder melts at a temperature about 40 °C higher
than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong
viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
•
Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
CONFIRMING THE OPERATION
Please confi rm the car audio unit works even if REM output is not
connected when you connect this unit with the car audio unit by
the HIGH LEVEL input.
Please confi rm the car audio unit works even if REM output is not
connected when you connect this unit with the car audio unit by
the HIGH LEVEL input.
PROTECTOR OPERATION CHECK
Thermal Protect
1. Short across TH601 with the power on.
2. Verify that the protector is operated and D929 and D930 illu-
1. Short across TH601 with the power on.
2. Verify that the protector is operated and D929 and D930 illu-
minates blue. When input the signal and verify that there is no
output on the SP-OUT even when the volume is increased.
output on the SP-OUT even when the volume is increased.
3. Verify that the protector is released and there is an output on
the SP-OUT when the short is removed.
4. Likewise, perform items 1 to 3 for TH602 and TH603.
Over Current Protect
1. Short between the positive and negative sides of the speaker
1. Short between the positive and negative sides of the speaker
output terminals TB002 and TB003 with the power on.
(Perform this shorting for each channel on FRONT and
REAR.)
REAR.)
2. Verify that the protector is operated and D931 illuminates red.
D929 and D930 are turned off.
3. Verify that the protector is not released and D931 remains red
even when the short is removed.
4. Verify that the protector is released and D931 is turned off and
D929 and D930 illuminates blue when the power is turned off
and then on again.
and then on again.
Offset Protect
1. Short between the +12V terminal of TB001 and the (L+R) + or
1. Short between the +12V terminal of TB001 and the (L+R) + or
(L+R) – of the speaker output terminal TB003.
(Short between +12V terminal and (L+R) + and between +12V
terminal and (L+R) –.)
terminal and (L+R) –.)
2. Verify that the protector is operated and D931 illuminates red.
D929 and D930 are turned off.
3. Verify that the protector is not released and D931 remains red
even when the short is removed.
4. Verify that the protector is released and D918 is turned off and
D929 and D930 illuminates blue when the power is turned off
and then on again.
and then on again.
NOTE FOR REPLACEMENT OF THE TRANSISTORS
The transistors Q110, 111, 210, 211, 310, 311, 410 and 411 have
two different ranks: P rank and Y rank.
The rank of these transistors need to be selected properly accord-
ing to each channel. When replacing any one of these transistors,
check its rank and replace with the appropriate transistor of the
same rank.
The transistors Q110, 111, 210, 211, 310, 311, 410 and 411 have
two different ranks: P rank and Y rank.
The rank of these transistors need to be selected properly accord-
ing to each channel. When replacing any one of these transistors,
check its rank and replace with the appropriate transistor of the
same rank.
Rank
Q110, 210, 310, 410
Q111, 211, 311, 411
P
2SC5100-P
2SA1908-P
Y
2SC5100-Y
2SA1908-Y
DISCRIMINATION:
A1908: 2SA1908
C5100: 2SC5100
C5100: 2SC5100
P: RANK P
Y: RANK Y
Y: RANK Y
The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit.
XM-GS4
4
SECTION 2
GENERAL
This section is extracted
from instruction manual.
from instruction manual.
Installation
ˎ Mount the unit either inside the trunk (boot) or
under a seat.
ˎ Choose the mounting location carefully so the
unit will not interfere with the normal movements
of the driver and it will not be exposed to direct
sunlight or hot air from the heater.
of the driver and it will not be exposed to direct
sunlight or hot air from the heater.
ˎ Do not install the unit under the floor carpet,
where the heat dissipation from the unit will be
considerably impaired.
considerably impaired.
Mounting the unit
First, place the unit where you plan to install it, and
mark the positions of the 4 screw holes on the
mounting board (not supplied). Then drill a 3 mm
(
mark the positions of the 4 screw holes on the
mounting board (not supplied). Then drill a 3 mm
(
1
/
8
in) pilot hole at each mark and mount the unit
onto the board with the supplied mounting screws.
The mounting screws are all 14 mm (
The mounting screws are all 14 mm (
9
/
16
in) long, so
make sure that the mounting board is thicker than
14 mm (
14 mm (
9
/
16
in).
ʓ
Connections
ˎ Before making any connections, disconnect the
ground (earth) terminal of the car battery to avoid
short circuits.
short circuits.
ˎ Be sure to use speakers with an adequate power
rating. If you use small capacity speakers, they
may be damaged.
may be damaged.
ˎ This is a Phase-Inverted Amplifier.
ˎ Do not connect the ¾ terminal of the speaker
system to the car chassis, and do not connect the
¾ terminal of the right speaker with that of the
left speaker.
left speaker.
ˎ Install the input and output cords away from the
power supply wire. Running them close together
may generate interference noise.
may generate interference noise.
ˎ This unit is a high powered amplifier. Therefore, it
may not perform to its full potential if used with
the speaker cords supplied with the car.
the speaker cords supplied with the car.
ˎ If your car is equipped with a computer system for
navigation or some other purpose, do not remove
the ground (earth) wire from the car battery. If you
disconnect the wire, the computer memory may
be erased. To avoid short circuits when making
connections, disconnect the +12 V power supply
wire until all the other wires have been
connected.
the ground (earth) wire from the car battery. If you
disconnect the wire, the computer memory may
be erased. To avoid short circuits when making
connections, disconnect the +12 V power supply
wire until all the other wires have been
connected.
Making the terminal connections
Note
When you tighten the screw, be careful not to apply too
much torque as doing so may damage the screw (the
torque value should be less than 1 N•m).
When you tighten the screw, be careful not to apply too
much torque as doing so may damage the screw (the
torque value should be less than 1 N•m).
ˎ Connect the +12 V power supply wire only after all
the other wires have been connected.
ˎ Be sure to connect the ground (earth) wire of the
unit securely to a metal point of the car. A loose
connection may cause a malfunction of the
amplifier.
connection may cause a malfunction of the
amplifier.
ˎ Be sure to connect the remote control wire of the
car audio unit to the remote input (REM) terminal.
ˎ When using a car audio unit without a remote
output for the amplifier, connect the remote input
(REM) terminal to the accessory power supply.
(REM) terminal to the accessory power supply.
Power Connections
Ƀ Line input connection
With the speaker connection Ǵ, ǵ, Ƕ or Ƿ
(page 7, 8)
(page 7, 8)
Note
You can enjoy high-resolution sound when this unit is
connected to a high-resolution audio supported car
audio unit (e.g. RSX-GS9).
You can enjoy high-resolution sound when this unit is
connected to a high-resolution audio supported car
audio unit (e.g. RSX-GS9).
Ʉ Line input connection
With the speaker connection Ǹ (page 8)
Note
You can enjoy high-resolution sound when this unit is
connected to a high-resolution audio supported car
audio unit (e.g. RSX-GS9).
You can enjoy high-resolution sound when this unit is
connected to a high-resolution audio supported car
audio unit (e.g. RSX-GS9).
Input Connections
Front
Rear
Left
Right
ˎ Use a power supply wire with a fuse (60 A)
attached.
ˎ All power wires connected to the positive battery
post should be fused within 450 mm (17
3
/
4
in) of
the battery post, and before they pass through
any metal.
any metal.
ˎ Make sure that the car’s battery wires connected
to the car (ground (earth) to chassis) are of a wire
gauge at least equal to that of the main power
wire connected from the battery to the amplifier.
gauge at least equal to that of the main power
wire connected from the battery to the amplifier.
ˎ During full-power operation, a current of more
than 60 A will run through the system. Therefore,
make sure that the wires to be connected to the
+12 V and GND terminals of this unit are at least 8-
Gauge (AWG-8) or have a sectional area of more
than 8 mm² (
make sure that the wires to be connected to the
+12 V and GND terminals of this unit are at least 8-
Gauge (AWG-8) or have a sectional area of more
than 8 mm² (
11
/
32
in²).
Making power connections
Power connection wires (not supplied) are required.
*1 If you have the factory original or some other car
audio unit without a remote output for the amplifier,
connect the remote input (REM) terminal to the
accessory power supply. In High level input
connection, the car audio unit can also be activated
without need for REMOTE connection. However, this
function is not guaranteed for all car audio units.
connect the remote input (REM) terminal to the
accessory power supply. In High level input
connection, the car audio unit can also be activated
without need for REMOTE connection. However, this
function is not guaranteed for all car audio units.
*2 Ground (earth) to chassis.
Fuse (60 A)
+12 V car battery
less than 450 mm (17
3
/
4
in)
to a metal point of the car
Ʌ High level input connection
With the speaker connection Ǵ, ǵ, Ƕ or Ƿ
(page 7, 8)
(page 7, 8)
Note
Also, refer to the manual supplied with your car audio
unit for further details.
Also, refer to the manual supplied with your car audio
unit for further details.
Gray ʱ
Gray/Striped ʲ
White ʳ
White/Striped ʴ
Green ʯ
Green/Striped ʰ
Purple ʭ
Purple/Striped ʮ
Front left speaker
output
output
Front right speaker
output
output
Rear right speaker
output
output
Rear left speaker
output
output
High Level Input Connector
ʔ
