Sony xm 754 hx service manual

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XM-754HX

SERVICE MANUAL

Ver1.1 2001. 08

US Model
Canadian Model
AEP Model

UK Model
E Model

SPECIFICATIONS

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.

Other Specifications

Circuit system OTL (output transformerless) circuit
Pulse power supply

Inputs RCA pinjacks
High level input connector

Outputs Speaker terminals

Speaker impedance
1* - 8 9 (stereo)
2* - 8 Q (when used as a bridging amplifier)
Maximum outputs (HI-CURRENT/HI-VOLTAGE)
Four speakers :
90/170W x 4 (at 4 Q)
Three speakers :
90Wx2+250Wx1l170Wx2+400Wx1
(at 4 52)
Two speakers :
250/400 W x 2 (at 4 52)
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 9)
50/100 W x 4 (20 Hz - 20 kHz, 0.1% THD,
at 2 52)
Two speakers :
100/200 W x2 (20 Hz - 20 kHz, 0.1% THD,
at 4 52)
Frequency response
5 Hz - 50 kHz (2:dB)

9-925-796-12 Sony Corporation
2001 H0400-1 e Vehicle Company

© 2001. 8 Shinagawa Tec Service Manual Production Group

Harmonic distortion
0.005% or less (at lkHz, 4 52)
Input level adjustment range
0.2 - 4.0 V (RCA pin jacks)
0.4 - 8.0 V (High level input)
filter 50 - 200 Hz, -12 dB/oct
.. 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
(49 HI-VOLTAGE mode)
Remote input : 1.5 mA

Dimensions Approx. 258 x 50 x 320 mm (w/h/d)
(10 /4 x 2 x 12 /t 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

STEREO POWER AMPLIFIER

SONE

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Features

I Maximum power output of 170 watts per channel
(at 4 o).

I This unit can be used as a bridging amplifier with a
maximum output of 400 watts.

- Dim connection can be made with the speaker
output of your car audio if it is not equipped with a
line output (High level input connection).

- Built-in variable LPF (Low-pass filter), HPF (HighA
pass filter) and low boost circuit.

- Possible to switch between Ill-CURRENT mode (]A
2 Q) and HIrVOLTAGE mode (2 , 4 Q).

I Protection cirruii and indicator provided.

I Pulse power supply* {or stable, regulated output
power.

a New circuit which removes the source resistance
from the firml MOS PET output stage, and drives
the speaker directly.

* Pulse power supply
This will has a bullf'lll power regulalar which converts the
W supyll'cd by the DC 12 v my hullery mm high 5pm
pulsrs using a stmicamluttm swuch Thcse pulses are
le'ppl'd up by the built-in pulsc hurls/mm?! and separall'd
mm both plrsilivc and negalive power supplies hcfm being
mum-nod mm din-(l rumhl again, This 15 to regulate
fluctuating voltagefmm the car battery. This light weight
powtr supply syslrm prouidcs a highly efficimt power
supply wllh 11 low imprdlmm tmqml

Specifications

TABLE OF CONTENTS

1. SERVICING NOTE ..
2. GENERAL ....................................................................... 3
3. DISASSEMBLY

3-1. Bottom Plate, Panel (Front), Panel (Rear),

SP (Front) Board, SP (Rear) Board Removal

32. Amplifier Board Removal ...........................
4. ELECTRICAL ADJUSTMENT ................................. 6
5. DIAGRAMS

5-1. Block Diagram.

5-2. Printed Wiring Boar

5A3. Schematic Diagram.
6. EXPLODED VIEW ...................................................... 17
7. ELECTRICAL PARTS LIST.. . 18

SECTION 1
SERVICING NOTE

CANCELLING THE PROTECTOR DURING SERVICING
Cut JWl32 on the amplifier board to cancel the protector.
After servicing always be sure to return JWl32 to its original state.

O
O

O
3| 0

JW168
JW131 II W32 ,9

JW167

I:

PROTECTOR OFF