Sony XM-754SX Primary Bedienungsanleitung

SERVICE MANUAL

US Model

Canadian Model

AEP Model

UK Model

E Model

XM-754SX

STEREO POWER AMPLIFIER

Other Specifications

Circuit system OTL (output transformerless) circuit

Pulse power supply

Inputs RCA pin jacks

High level input connector

Outputs Speaker terminals

Speaker impedance 2 – 8 Ω(stereo)

4 – 8 Ω(when used as a bridging amplifier)

Maximum outputs Four speakers: 170 W ×4 (at 4 Ω)

Three speakers: 170 W ×2 + 400 W ×1 (at 4 Ω)

Two speakers: 400 W ×2 (at 4 Ω)

Rated outputs (supply voltage at 14.4 V)

Four speakers:

75 W ×4 (20 Hz – 20 kHz, 0.04% THD, at 4 Ω)

100 W ×4 (20 Hz – 20 kHz, 0.1% THD, at 2 Ω)

Two speakers:

200 W ×2 (20 Hz – 20 kHz, 0.1% THD, at 4 Ω)

Frequency response 5 Hz – 100 kHz ( dB)

Harmonic distortion 0.005% or less (at 1 kHz, 4 Ω)

Input level adjustment range

0.2 – 6.0 V (RCApin jacks)

0.4 – 12.0 V (High level input)

High-pass filter 50 – 300 Hz, –12 dB/oct

Low-pass filter 50 – 300 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 (4 Ω)

Remote input : 1.5 mA

Dimensions Approx. 358 ×50 ×264 mm

(w/h/d) (14 1/8 ×2 ×10 1/2 in.) not incl.

projecting parts and controls

Mass Approx. 3.5 kg (7 lb. 11 oz.) not incl. accessories

Supplied accessories Mounting screws (4)

Design and specifications are subject to c hange without

notice.

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS (US MODEL)

POWER OUTPUTAND 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.

+0.5

–3

Notes on Chip Component Replacement

•Never reuse a disconnected chip component.

•Notice that the minus side of a tantalum capacitor may be

damaged by heat.

Ver 1.1 2001. 05

Sony Corporation

e Vehicle Company

Shinagawa Tec Service Manual Production Group

9-873-503-11

2001E0400-1

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TABLE OF CONTENTS

1. GENERAL

Location and Function of Controls.......................................... 3

Connections ............................................................................. 4

2. DISASSEMBLY

2-1. Plate, Bottom ....................................................................... 6

2-2. Main Board Section ............................................................. 6

2-3. Main Board, Filter (F) Board, Filter (R) Board ................... 7

2-4. LED Board........................................................................... 7

3. ELECTRICAL ADJUSTMENT...................................... 8

4. DIAGRAMS

4-1. Block Diagram..................................................................... 9

4-2. Printed Wiring Board –Main Section– .............................. 11

4-3. Schematic Diagram –Main Section (1/2)– ........................ 12

4-4. Schematic Diagram –Main Section (2/2)– ........................ 13

4-5. Schematic Diagram –Filter (F), Filter (R),

LED Section– .................................................................... 14

4-6. Printed Wiring Boards –Filter (F), Filter (R),

LED Section– .................................................................... 15

5. EXPLODED VIEWS

5-1. Heat Sink (Main) Section .................................................. 17

5-2. Main Board Section ........................................................... 18

6. ELECTRICAL PARTS LIST ........................................ 19

XM-754SX

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE

WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN

THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.

REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE

PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR

IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!!

LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0SUR LES

DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES

SONT CRITIQUES POUR LASÉCURITÉ DE FONCTIONNEMENT.

NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES

SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL

OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

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XM-754SX

SECTION 1

GENERAL This section is extracted

from instruction manual.

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XM-754SX SECTION 2

DISASSEMBLY

• The equipment can be removed using the following procedure.

2-2. MAIN BOARD SECTION

BTP 3x6

plate, bottom

sheet, insulatin

BTP 3x6

P 2.6x2.8

BTP 3x6

CN802

BTP 3x6

B.TT. 3x14

MAIN board

Set Plate, Bottom LED Board

Main Board, Filter (F) Board, Filter (R) Board

Main Board Section

Note : Follow the disassembly procedure in the numerical order given.

2-1. PLATE, BOTTOM

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2-3. MAIN BOARD, FILTER (F) BOARD, FILTER (R) BOARD

2-4. LED BOARD

BTP 3x6

sheet (LED), insulating

LED board

heat sink (main)

P 3x8

CNP101

CNP201

BVTT 3x5

FILTER (F) board

FILTER (R) board

MAIN board

panel (4ch), front

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SECTION 3

ELECTRICAL ADJUSTMENT

RV104

BIAS ADJUSTMENT

(FRONT L-CH)

RV204

BIAS ADJUSTMENT

(FRONT R-CH)

RV304

BIAS ADJUSTMENT

(REAR L-CH)

RV404

BIAS ADJUSTMENT

(REAR R-CH)

– MAIN BOARD (CONDUCTOR SIDE) –

Stabilized

Power supply Digital

Voltmeter

B+,REM terminals

set

GND terminal test points

Adjustment Location :

Test Point Location :

TP31

TP32 TP33

TP42 TP41

TP43

TP21

TP22 TP23

TP11

TP12 TP13

–MAIN BOARD (CONDUCTOR SIDE) –

Bias Adjustment

Note : The Bias adjustment should be performed only if any of

Q109 and Q110 for RV104, Q209 and Q210 for RV204,

Q309 and Q310 for RV304, and Q409 and Q410 for RV404

are replaced.

Setting :

Procedure:

1. Rotate variable resistors RV104 (FRONT L-CH), RV204

(FRONT R-CH), RV304 (REAR L-CH) and RV404 (REAR

R-CH) full counterclockwise as seen from the pattern side to

minimize the bias current.

2. The input signal is with no signal.

3. Connect the stabilized power supply between B+ and REM

terminals and gradually increase the voltage to 14.4 V while

checking for any abnormal current.

4. Adjust RV104(FRONT L-CH),RV204 (FRONTR-CH),RV304

(REAR L-CH) and RV404 (REAR R-CH) so that the digital

voltmeter connected between the respective test points reads

19.5±0.5 mV.

5. After this adjustment, verify that the current value of the

stabilized power supply is 2.5±0.5 A.

(When the set is cool, more current will flow. If the observed

value is out of specification, wait unit the set is warmed up and

then perform this adjustment again.)

RV Ref. No. Test points

RV104 TP11 and TP12

RV204 TP21 and TP22

RV304 TP31 and TP32

RV404 TP41 and TP42

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21 3 1 6 7 2 1

PRE AMP

IC801 (1/2) PRE AMP

IC802 (1/2)

673

LOW BOOST

IC806 (2/2) GAIN AMP

IC806 (1/2)

H.P.F

IC803 (1/2)

L.P.F

IC804 (2/2)

L.P.F

IC804 (1/2)

DIFFERENTIAL

AMP

Q103

POWER

AMP

Q109

DRIVE

AMP

Q107

DIFFERENTIAL

AMP

Q104

POWER

AMP

Q110

DRIVE

AMP

Q108

BIAS

Q111

LEVEL

SHIFT

Q101

LEVEL

FILTER

S801-1

LPF

OFF

HPF

LEVEL

RV802-1

LOW

BOOST

B+

(+14.2V)

B–

(–14.2V)

B+

(+14.2V)

B–

(–14.2V)

CNJ100-1

CNJ100-2

CN101

RV801-1

FILTER

RV801-3

FILTER

RV803-1

LINE

SWITCH

Q102

+12V

GND

67 5 7 2 1 6 7

PRE AMP

IC801 (2/2) PRE AMP

IC802 (2/2)

673

LOW BOOST

IC807 (2/2) GAIN AMP

IC807 (1/2)

H.P.F

IC803 (2/2)

L.P.F

IC805 (1/2)

L.P.F

IC805 (2/2)

DIFFERENTIAL

AMP

Q203

POWER

AMP

Q209

DRIVE

AMP

Q207

DIFFERENTIAL

AMP

Q204

SWITCH

CONTROL

Q801,802

POWER

AMP

Q210

DRIVE

AMP

Q208

BIAS

Q211

LEVEL

SHIFT

Q201

RV802-2

LOW

BOOST

RV801-2

FILTER

RV801-4

FILTER

HIGH

LEVEL

INPUT

(FRONT)

(BTL)

(FRONT)

INPUT

(REAR)

INPUT

CN810

BTL

RV803-2

LINE

SWITCH

Q202

RV204

BIAS

RV104

BIAS

TEMP.DET

THN801,804-807,

THP802,803

REF.

REG

CN800 F901

40A

INVERTER

Q904,905

INVERTER

Q906,907

DRIVER

Q908

DRIVER

Q909

D811

THERMAL

D810

OFFSET

(PROTECTOR)

FRONT

SPEAKER

OUT

D808

POWER

D809

OVER

CURRENT

SW805

TEST

TONE DC-DC

CONVERTER

TRANSFORMER

T801

DC-DC CONVERTER

IC901

SWITCH

Q808

• Signal path

: AUDIO

• Front-ch : same as Rear-ch

REG

Q901,902

FILTER

S801-2

LPF

OFF

HPF

(40Hz)

OVER LOAD

DET

Q112

OVER LOAD

DET

Q212

CN811

BTL

REAR

SPEAKER

OUT

CNJ100-3

CNJ100-4

CN201

(BTL)

REM

CN803

B+

REG

Q910

B–

REG

Q911

B+

(+23.5V)

B+

(+42V)

B+

(+36V)

B+

(+36V)

(–35V)

(–42V)

(–14.2V)

B–

B+

(+14.2V)

LED DRIVE

Q812,813

D823

D822

D828 D829

LED DRIVE

Q810,811

OFFSET

DET

Q803-805

LED DRIVE

Q809

POWER

ON/OFF

Q903

DC DET

IC902

D903

D905

D906

D904

D917

D911

D912

D918

D905,906

RECT

D911,912

RECT

D903,904

RECT

D917,918

RECT

D909

D907

D908

D910

D907-910

RECT

TEST TONE

GENERATOR

IC815

(FRONT)

(REAR)

HIGH

LEVEL

INPUT

(REAR)

(PROTECTOR)

4-1. BLOCK DIAGRAM

SECTION 4

DIAGRAMS

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XM-754SX

• IC Block Diagram

IC901 µPC494GS-T1

16 15 14 13 12 11 10 9

1 2 3 4 5 6 7 8

OSC

REF. REG.

ERROR

0.1V

Q111 F-11

Q112 E-12

Q201 G-7

Q202 D-7

Q203 D-10

Q204 D-9

Q207 D-10

Q208 D-10

Q209 C-11

Q210 D-11

Q211 D-11

Q212 C-12

Q301 G-4

Q302 F-3

Q303 D-3

Q304 D-4

Q307 D-3

Q308 D-3

Q309 C-1

Q310 D-1

Q311 D-1

Q312 C-1

Q401 G-4

Q402 F-3

Q403 E-3

Q404 E-4

Q407 E-3

Q408 E-3

Q409 E-1

Q410 F-1

Q411 F-1

Q412 F-1

Q801 E-7

Q802 E-7

Q803 B-12

Q804 B-12

Q805 C-12

Q809 G-10

Q810 G-12

Q811 G-12

Q812 G-12

Q813 G-12

Q901 F-9

Q902 F-9

Q903 G-9

Q904 A-8

Q905 A-7

Q906 A-6

Q907 A-5

Q908 A-7

Q909 A-6

Q910 E-6

Q911 E-5

D801 E-7

D802 E-7

D805 F-10

D812 E-7

D813 F-7

D822 F-12

D823 F-12

D824 F-12

D825 D-12

D826 D-1

D827 F-1

D828 G-11

D829 G-11

D901 G-9

D902 G-9

D903 D-6

D904 D-5

D905 D-7

D906 D-7

D907 A-9

D908 A-8

D909 A-4

D910 A-4

D911 D-7

D912 D-7

D913 E-6

D914 E-5

D917 D-5

D918 D-5

R141 F-12

R241 D-11

R341 D-1

R441 F-1

IC801 F-6

IC806 G-7

IC807 G-7

IC808 F-5

IC813 G-3

IC814 G-4

IC815 E-7

IC901 F-10

IC902 E-9

Q101 G-8

Q102 D-8

Q103 E-9

Q104 E-9

Q107 E-10

Q108 E-10

Q109 E-11

Q110 F-11

• Semiconductor Location (MAIN SECTION)

Ref. No. Location Ref. No. Location

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS

AND SCHEMATIC DIAGRAMS.

(In addition to this, the necessary note is

printed in each block.)

for schematic diagram:

Note:

• 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.

• % : indicates tolerance.

•2: nonflammable resistor.

Note:

The components identi-

fied by mark 0or dotted

linewith mark0arecriti-

cal for safety.

Replace only with part

number specified.

Note:

Lescomposants identifiéspar

une marque 0sont critiques

pour la sécurité.

Ne les remplacer que par une

piéce portant le numéro

spécifié.

•A: B+ Line.

•B: B– Line.

• Powervoltageis dc14.4Vand fedwithregulated dc power

supply from +12V and REM terminals.

• Voltage is dc with respect to ground under no-signal

condition.

• Voltagesare takenwith aVOM (Inputimpedance10 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:

Note:

•X: parts extracted from the component side.

•: Pattern from the side which enables seeing.

(The other layer’s patterns are not indicated.)

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