Sony XM-754HX Service Manual

XM-754HX
SERVICE MANUAL
STEREO POWER AMPLIFIER
SPECIFICATIONS
US Model
Canadian Model
AEP Model
UK Model
E Model
Other Specifications
Circuit system OTL (output transformerless) circuit
Pulse power supply
Inputs RCA pin jacks
High level input connector
Outputs Speaker terminals
Speaker impedance
1* – 8 Ω (stereo)
2* – 8 Ω (when used as a bridging amplifier)
Maximum outputs (HI-CURRENT/HI-VOLTAGE)
Four speakers :
90/170 W x 4 (at 4 Ω)
Three speakers :
90 W x 2 + 250W x 1 / 170W x 2 + 400W x 1
(at 4 Ω)
Two speakers :
250/400 W x 2 (at 4 Ω)
Rated outputs (HI-CURRENT/HI-VOLTAGE)
(supply voltage at 14.4 V)
Four speakers :
35/75 W x 4 (20 Hz – 20 kHz, 0.04% THD,
at 4 Ω)
50/100 W x 4 (20 Hz – 20 kHz, 0.1% THD,
at 2 Ω)
Two speakers :
100/200 W x2 (20 Hz – 20 kHz, 0.1% THD,
at 4 Ω)
Frequency response
+0.5
5 Hz – 50 kHz (
–3
dB)
AUDIO POWER SPECIFICATIONS (US model)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
75 watts per channel minimum continuous average power into
4 ohms, both channels driven from 20 Hz to 20 kHz with no more
than 0.04% total harmonic distortion per Car Audio Ad Hoc
Committee standards.
Harmonic distortion
0.005% or less (at lkHz, 4 Ω)
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
Low boost 0 – 10 dB (40 Hz)
Power requirements 12 V DC car battery (negative ground)
Power supply voltage
10.5 – 16 V
Current drain at rated output : 40 A
(4Ω HI-VOLTAGE mode)
Remote input : 1.5 mA
Dimensions Approx. 258 x 50 x 320 mm (w/h/d)
(10
l
/
4
x 2 x 12
5
/
8
in.) not incl. projecting parts and
controls
Mass Approx. 3.5 kg (7 lb. 11 oz.) not incl. accessories
Supplied accessories
Mounting screws (4),
Terminal cap (1)
Design and specifications are subject to change without notice.
* HI-CURRENT only
1
Ver 1.1 2001. 08
Sony Corporation
e Vehicle Company
Shinagawa Tec Service Manual Production Group
9-925-796-12
2001H0400-1
© 2001. 8

Sony XM-754HX Specifications

General

Channels	4
Power Output (4 Ohms)	75W x 4
S/N Ratio	100dB
Input Sensitivity	0.2 - 4V
Crossover Type	HP/LP
Crossover Frequency Range	50Hz - 250Hz

Summary

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

Details minimum continuous average power output and total harmonic distortion.

Other Specifications

Details on circuit system, inputs, outputs, speaker impedance, and other technical parameters.

SECTION 1 SERVICING NOTE

CANCELLING THE PROTECTOR DURING SERVICING

Procedure to temporarily disable the protection circuit for servicing purposes.

SECTION 2 GENERAL

Location and Function of Controls

Description of the unit's controls, indicators, and their functions.

Connections

Guidance on connecting the unit to power sources and audio equipment.

Installation and Precautions

Important safety and installation guidelines to prevent damage and ensure proper operation.

Fuse Replacement

Instructions for safely replacing the unit's fuse if it blows.

SECTION 2 GENERAL

Input Connections

Details on connecting various audio input sources to the amplifier.

Speaker Connections

Guidance on connecting speaker systems for different configurations.

SECTION 3 DISASSEMBLY

Component and Board Removal

Procedure for removing the bottom plate, panels, and internal boards.

SECTION 4 ELECTRICAL ADJUSTMENT

Bias Adjustment Procedure

Procedure for adjusting the bias voltage on the amplifier board.

SECTION 5 DIAGRAMS

BLOCK DIAGRAM

Overview of the amplifier's internal circuit blocks and signal flow.

SECTION 5 DIAGRAMS

PRINTED WIRING BOARDS

Diagrams showing the layout of components on the printed circuit boards.

SECTION 5 DIAGRAMS

SCHEMATIC DIAGRAM

Detailed electrical schematic of the amplifier's circuitry.

SECTION 6 EXPLODED VIEW

AMPLIFIER COMPONENTS

Diagram showing the physical breakdown of the amplifier unit for parts identification.

SECTION 7 ELECTRICAL PARTS LIST

Capacitors, Resistors, and Semiconductors

List of key passive and active components like capacitors, resistors, and semiconductors.

Diodes, ICs, and Connectors

List of diodes, integrated circuits, and various connector parts.

SECTION 7 ELECTRICAL PARTS LIST

Jumper Resistors and Transistors

List of jumper resistors and various transistor components used in the amplifier.

Coils, Pilot Lamp, and Other Components

List of inductor coils, pilot lamp, and other miscellaneous components.

SECTION 7 ELECTRICAL PARTS LIST

Transistors and Resistors

Detailed list of transistor and resistor components with their specifications.

SECTION 7 ELECTRICAL PARTS LIST

Resistors and Variable Resistors

List of resistors, including variable resistors for adjustments and their values.

SECTION 7 ELECTRICAL PARTS LIST

High Level Components and Switches

List of resistors, variable resistors, switches, and thermistors for high-level sections.

Capacitors

List of capacitor components used in the high-level board section.

SECTION 7 ELECTRICAL PARTS LIST

Connectors, Resistors, and Boards

List of connectors, resistors, and specific boards for front/rear sections.

Hardware and Manuals

List of hardware, screws, and instruction manuals included with the unit.

DIFFERENCE PARTS LIST

Panel and Heat Sink Part Differences

Details on differences in front panel and heat sink parts for color variations.

Ornamental Plate and Rear Panel Part Differences

Details on differences in ornamental plates and rear panel parts for color variations.