Sony XM-752EQX Bedienungsanleitung

– 1 –

MICROFILM

SERVICE MANUAL

US Model

Canadian Model

AEP Model

UK Model

E Model

XM-752EQX

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

Through out pin jacks

Speaker impedance 2 – 8 Ω(stereo)

4 – 8 Ω(when used as a bridging

amplifier)

Maximum outputs 150 watts ×2 (at 4 Ω)

400 watts (monaural, at 4 Ω)

Rated outputs (supply voltage at 14.4V)

75 watts per channel (20 Hz –

20 kHz, 0.04% THD, at 4 Ω)

100 watts per channel (20 Hz –

20 kHz, 0.1% THD, at 2 Ω)

200 watts (monaural) (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 – 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: 20 A

Remote input: 1.5 mA

Dimensions Approx. 260 ×55 ×220 mm

(10 1/4 ×2 1/4 ×8 3/4 in.)

(l/h/p) not incl. projecting parts

and controls

Mass Approx. 2.2 kg (4 lb. 14 oz.)

not incl. accessories

Supplied accessories Mounting screws (4),

Terminal cap (1)

Design and specifications are subject to change without

notice.

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS (US, Canadian 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.

–3

– 2 –

TABLE OF CONTENTS

1. GENERAL

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

Connections ............................................................................. 3

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–.............................. 11

3-3. Schematic Diagram –AMP Section– ................................ 13

3-4. Schematic Diagram –PRE Section–.................................. 15

3-5. Printed Wiring Board –PRE Section– ............................... 15

3-6. Schematic Diagram –EQ Section–.................................... 17

3-7. Printed Wiring Board –EQ Section– ................................. 17

3-8. Printed Wiring Board –IND Section– ............................... 19

3-9. Schematic Diagram –IND Section– ..................................20

3-10. Printed Wiring Board –LED Section–............................... 21

3-11. Schematic Diagram –LED Section– ................................. 22

4. EXPLODED VIEWS

4-1. Heat Sink Section .............................................................. 24

4-2. Control Panel Section........................................................ 25

5. ELECTRICAL PARTS LIST ........................................ 26

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.

– 3 –

SECTION 1

GENERAL This section is extracted

from instruction manual.

– 4 –

– 5 –

– 6 –

BTP 3x5

BTP 3x4

BTP 3x

bottom plate

SECTION 2

DISASSEMBLY

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

2-1. BOTTOM PLATE

2-2. PANEL (A)

BTP 3x8

panel (A

)

– 7 –

BTP 3x12

BVTP 3x12

screw (3x8) (CZN-N)

fuse

(30A)

AMP board

2-3. PANEL (B)

2-4. AMP BOARD

BTP 3x8

panel (B

)

– 8 –

claw

CNP804

CNP803

CNJ805

CNJ802

control panel bloc

2-5. CONTROL PANEL BLOCK

3-1. BLOCK DIAGRAM

– 9 – – 10 –

XM-752EQX

SECTION 3

DIAGRAMS

CNJ801

OUTPUT

(THROUGH)

(MONO)

INPUT

(MONO) +

CNJ801

CN803

CN801

REM

LINE AMP

IC101

R-CH

FILTER

IC103 (2/2)

FILTER

IC103 (1/2)

VR101-1

LPF

OFF

HPF

S101

FILTER EQ AMP

VR101

FILTER

S102

DIRECT

BUFFER

IC111

LINE

SWITCH

Q112

LINE

CONTROL

B– (AMP) B+(AMP)

Q813, 814

POWER

ON/OFF

Q901

B+

SWITCH

Q902 , 903

LED

DRIVE

SWITCH

Q807

F901

16 1 10 9

ON/OFF

CONTROL OSC

DC-DC CONVERTER

CONTROL

IC901

TH802

TH801

PROTECT

LATCH

Q809, 812

ON/OFF

DRIVE

ON/OFF

DRIVE

Q905, 907

+6V

REG

Q904

Q906, 908

(CURRENT CHECK)

PROTECT

CHECH

Q808, 811

(CURRENT CHECK)

T901

DC-DC CONVERTER

TRANSFORMER D912

+6V

+15V

REG

Q911, 913

–15V

REG

Q912, 914

B+ (AMP)

+15V

–15V

B– (AMP)

B+ (PRE)

B– (PRE)

D901

D902

D903

D904

DRIVER

Q101 – 106

POWER

AMP

Q107 – 110

OVER LOAD

DET

Q111

VOLTAGE

CHECK

Q815-817

SIGNAL METER AMP

IC801

75 1

12 – 15 16 – 21

LED

DRIVE

Q801 – 804 LD801 – 824

LED

CONTROL

IC802

MONOL+R

CN802

R-CH

VR107

LEVEL

–1

–3

OUTPUT

(THROUGH)

INPUT

–2

–4

HIGH

LEVEL

INPUT

VCC

LEVEL

METER

POWER/PROTECTOR

THERMAL

Signal path

: AUDIO

–

IC102

VR101-2

–

IC106-109

VR102 50Hz

VR103 200Hz

VR104 800Hz

VR105 3.2kHz

VR106 12.8kHz

EQUALIZER

EQ BUFFER

IC105

OFF

DC DET

IC901

B+

AC1 IN

D4–D1 O6–O1

Q810

B+

LD827

LED

DRIVE

SWITCH

Q806

OFFSET

B+

LD826

LED

DRIVE

SWITCH

Q806

OVER

CURRENT

B+

LD825

B+

D801

SPEAKER OUT

– 11 – – 12 –

XM-752EQX

3-2. PRINTED WIRING BOARD — AMP SECTION —

Note:

•X: parts extracted from the component side.

•b: Pattern from the side which enables seeing.

Ref. No. Location

D101 C-2

D102 D-3

D201 C-4

D202 D-5

D801 E-9

D802 F-9

D803 F-2

D806 E-1

D901 C-9

D902 D-9

D903 A-8

D904 A-9

D905 C-8

D906 D-8

D907 A-6

D908 A-6

D909 D-5

D910 G-9

D911 G-9

D912 D-9

IC101 H-3

IC801 D-3

IC901 F-9

IC902 G-8

Q101 D-2

Q102 C-2

Q103 C-2

Q104 C-3

Q105 A-3

Q106 A-2

Q107 B-1

Q108 B-1

Q109 A-3

Q110 A-2

Q111 A-2

Q112 D-2

Q201 C-4

Q202 C-4

Q203 C-4

Q204 C-4

Q205 A-5

Q206 A-5

Q207 A-4

Q208 A-4

Q209 A-6

Q210 A-4

Q211 A-5

Q212 D-4

Q808 E-9

Q809 E-9

Q810 E-8

Q811 D-9

Q812 E-8

Q813 F-1

Q814 E-2

Q815 H-4

Q816 G-4

Q817 H-4

Q901 I-9

Q902 F-10

Q903 G-9

Q904 E-5

Q905 C-9

Q906 C-10

Q907 A-9

Q908 A-10

Q911 A-6

Q912 A-6

• Semiconductor

Location

(Page 19)

(Page 16)

(Page 21)

(Page 17)

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