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XM-754SX
SERVICE MANUAL US Model
Canadian Model
Ver 1.1 2001. 05
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 Input level adjustment range
Pulse power supply 0.2 6.0 V (RCA pin jacks)
Inputs RCA pin jacks 0.4 12.0 V (High level input)
High level input connector High-pass filter 50 300 Hz, 12 dB/oct
Outputs Speaker terminals Low-pass filter 50 300 Hz, 12 dB/oct
Speaker impedance 2 8 (stereo) Low boost 0 10 dB (40 Hz)
4 8 (when used as a bridging amplifier) Power requirements 12 V DC car battery
Maximum outputs Four speakers: 170 W × 4 (at 4 ) (negative ground)
Three speakers: 170 W × 2 + 400 W × 1 (at 4 ) Power supply voltage 10.5 16 V
Two speakers: 400 W × 2 (at 4 ) Current drain at rated output : 40 A (4 )
Rated outputs (supply voltage at 14.4 V) Remote input : 1.5 mA
Four speakers: Dimensions Approx. 358 × 50 × 264 mm
75 W × 4 (20 Hz 20 kHz, 0.04% THD, at 4 ) (w/h/d) (14 1/8 × 2 × 10 1/2 in.) not incl.
100 W × 4 (20 Hz 20 kHz, 0.1% THD, at 2 ) projecting parts and controls
Two speakers: Mass Approx. 3.5 kg (7 lb. 11 oz.) not incl. accessories
200 W × 2 (20 Hz 20 kHz, 0.1% THD, at 4 ) Supplied accessories Mounting screws (4)
Frequency response 5 Hz 100 kHz (+0.5 dB)
3
Harmonic distortion 0.005% or less (at 1 kHz, 4 ) Design and specif ications are subject to c hange without
notice .
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.
STEREO POWER AMPLIFIER
9-873-503-11 Sony Corporation
2001E0400-1 e Vehicle Company
© 2001. 5 Shinagawa Tec Service Manual Production Group
1
XM-754SX
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
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON 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 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES
SONT CRITIQUES POUR LA SÉCURITÉ 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.
2
XM-754SX
SECTION 1
GENERAL This section is extracted
from instruction manual.
3
XM-754SX
4
XM-754SX
5
XM-754SX
SECTION 2
DISASSEMBLY
· The equipment can be removed using the following procedure.
Set Plate, Bottom Main Board Section Main Board, Filter (F) Board, Filter (R) Board
LED Board
Note : Follow the disassembly procedure in the numerical order given.
2-1. PLATE, BOTTOM
3 BTP 3x6
2 BTP 3x6
1 BTP 3x6
5 plate, bottom
4 P 2.6x2.8
7 sheet, insulating
6
2-2. MAIN BOARD SECTION 3 B.TT. 3x14
4 B.TT. 3x14
2 BTP 3x6
5 B.TT. 3x14
7 MAIN board
1 BTP 3x6
6
8 CN802
6
XM-754SX
2-3. MAIN BOARD, FILTER (F) BOARD, FILTER (R) BOARD
4 BVTT 3x5 7 BVTT 3x5
6 FILTER (F) board
9 FILTER (R) board
5 CNP101
0 MAIN board
2 P 3x8
8 CNP201
1 P 3x8 3 panel (4ch), front
2-4. LED BOARD
1 BTP 3x6
2 sheet (LED), insulating
3 LED board
heat sink (main)
7
XM-754SX
SECTION 3
ELECTRICAL ADJUSTMENT
Bias Adjustment Adjustment Location :
Note : The Bias adjustment should be performed only if any of MAIN BOARD (CONDUCTOR SIDE)
Q109 and Q110 for RV104, Q209 and Q210 for RV204,
Q309 and Q310 for RV304, and Q409 and Q410 for RV404
are replaced. RV304 RV204
BIAS ADJUSTMENT BIAS ADJUSTMENT
Setting : (REAR L-CH) (FRONT R-CH)
Stabilized Digital
Power supply B+,REM terminals Voltmeter
set + RV404 RV104
_
BIAS ADJUSTMENT BIAS ADJUSTMENT
(REAR R-CH) (FRONT L-CH)
GND terminal test points
Test Point Location :
Procedure:
1. Rotate variable resistors RV104 (FRONT L-CH), RV204
(FRONT R-CH), RV304 (REAR L-CH) and RV404 (REAR MAIN BOARD (CONDUCTOR SIDE)
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 TP31 TP21
checking for any abnormal current. TP22
TP32
4. Adjust RV104 (FRONT L-CH), RV204 (FRONT R-CH), RV304 TP33 TP23
(REAR L-CH) and RV404 (REAR R-CH) so that the digital
voltmeter connected between the respective test points reads TP41 TP11
TP42 TP12
19.5±0.5 mV.
TP13
TP43
RV Ref. No. Test points
RV104 TP11 and TP12
RV204 TP21 and TP22
RV304 TP31 and TP32
RV404 TP41 and TP42
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.)
8
XM-754SX
SECTION 4
DIAGRAMS
4-1. BLOCK DIAGRAM
S801-1 (FRONT)
PRE AMP FILTER
IC801 (1/2) PRE AMP H.P.F L.P.F L.P.F LPF
CNJ100-1 IC802 (1/2) IC803 (1/2) IC804 (2/2) IC804 (1/2)
OFF LOW BOOST CN810
L 3 IC806 (2/2) GAIN AMP OVER LOAD
LINE FRONT
(BTL) 1 3 HPF IC806 (1/2) DET
2 1 3 1 6 7 2 1 SWITCH SPEAKER
2 Q112
RV801-1 RV801-3 5 Q102 OUT
7 3 DIFFERENTIAL DRIVE POWER
FILTER FILTER 6 1 AMP AMP AMP
2
Q103 Q107 RV104 Q109
CN101 BIAS L
B+
L (+14.2V)
HIGH RV802-1
INPUT LEVEL LEVEL BIAS
LOW
SHIFT Q111
(FRONT) INPUT BOOST
(FRONT) (40Hz) Q101 RV803-1 DIFFERENTIAL DRIVE POWER
R AMP AMP AMP
LEVEL
Q104 Q108 Q110
B BTL
PRE AMP
PRE AMP H.P.F L.P.F L.P.F (14.2V)
IC801 (2/2)
IC802 (2/2) IC803 (2/2) IC805 (1/2) IC805 (2/2)
LOW BOOST
CNJ100-2 6 IC807 (2/2) GAIN AMP LINE OVER LOAD
R 7 5 IC807 (1/2) DET
5 7 5 7 2 1 6 7 SWITCH
6 Q202 Q212
RV801-2 RV801-4 5 DIFFERENTIAL DRIVE POWER
7 3
FILTER FILTER 6 1 AMP AMP AMP
2
S801-2 Q203 Q207 RV204 Q209
B+ R
FILTER BIAS
LPF (+14.2V)
OFF LEVEL BIAS
SHIFT Q211
HPF
RV802-2 Q201 DIFFERENTIAL DRIVE POWER
RV803-2
LOW AMP AMP AMP
BOOST LEVEL
Q204 Q208 Q210 CN811
(40Hz) B
(14.2V) REAR
SPEAKER
OUT
CNJ100-3
L
(BTL) (REAR)
L
CN201
L
HIGH
INPUT LEVEL
BTL
(REAR) INPUT
(REAR)
R
CNJ100-4
R
R
SWITCH
D828 D829 CONTROL
Q801,802
3 LED DRIVE
1
2 Q812,813
TEST TONE B+
D809 D822 D823 D903,904 (+23.5V)
GENERATOR
IC815 SW805 OVER D903 RECT B+
5 B+ OFFSET
7 CURRENT REG LED DRIVE
TEST (+14.2V) DET
6 Q910 Q810,811
TONE (PROTECTOR) Q803-805
DC-DC CONVERTER DC-DC D904 D905 B+
IC901 CONVERTER (+42V)
F901 TRANSFORMER
CN800 D907 B+
40A 11 T801 D810
+12V 2 REG D906
12 (+36V) OFFSET
Q901,902 D905,906
INVERTER RECT (PROTECTOR)
10
Q904,905
D909 B+
D808 (+36V)
GND 1 POWER REF. D907-910
REG RECT
DRIVER
Q908
DC DET
IC902 14
8
POWER D811 D908 B
ON/OFF INVERTER (35V)
Q903 THERMAL 1 9
(PROTECTOR) Q906,907
2 D911,912
CN803 D910 B
RECT
LED DRIVE (35V)
REM DRIVER D911
Q809
Q909
15 B
TEMP.DET (42V)
THN801,804-807, 16 D917 D912
THP802,803 B
REG B · Signal path
(14.2V)
3 D918 D917,918 Q911
SWITCH RECT
: AUDIO
Q808 · Front-ch : same as Rear-ch
9 9
XM-754SX
· Semiconductor Location (MAIN SECTION)
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS. Ref. No. Location Ref. No. Location
(In addition to this, the necessary note is D801 E-7 Q111 F-11
printed in each block.) D802 E-7 Q112 E-12
D805 F-10 Q201 G-7
D812 E-7 Q202 D-7
for schematic diagram:
D813 F-7 Q203 D-10
Note:
D822 F-12 Q204 D-9
· All capacitors are in µF unless otherwise noted. pF: µµF
D823 F-12 Q207 D-10
50 WV or less are not indicated except for electrolytics D824 F-12 Q208 D-10
and tantalums. D825 D-12 Q209 C-11
· All resistors are in and 1/4 W or less unless otherwise D826 D-1 Q210 D-11
specified. D827 F-1 Q211 D-11
· % : indicates tolerance. D828 G-11 Q212 C-12
· 2 : nonflammable resistor. D829 G-11 Q301 G-4
D901 G-9 Q302 F-3
Note: Note:
D902 G-9 Q303 D-3
The components identi- Les composants identifiés par D903 D-6 Q304 D-4
fied by mark 0 or dotted une marque 0 sont critiques D904 D-5 Q307 D-3
line with mark 0 are criti- pour la sécurité. D905 D-7 Q308 D-3
cal for safety. Ne les remplacer que par une D906 D-7 Q309 C-1
Replace only with part piéce portant le numéro D907 A-9 Q310 D-1
number specified. spécifié. D908 A-8 Q311 D-1
D909 A-4 Q312 C-1
· A : B+ Line.
D910 A-4 Q401 G-4
· B : B Line. Q402 F-3
D911 D-7
· Power voltage is dc 14.4V and fed with regulated dc power D912 D-7 Q403 E-3
supply from +12V and REM terminals. D913 E-6 Q404 E-4
· Voltage is dc with respect to ground under no-signal D914 E-5 Q407 E-3
condition. D917 D-5 Q408 E-3
· Voltages are taken with a VOM (Input impedance 10 M). D918 D-5 Q409 E-1
Voltage variations may be noted due to normal produc- Q410 F-1
tion tolerances. R141 F-12 Q411 F-1
· Waveforms are taken with a oscilloscope. R241 D-11 Q412 F-1
Voltage variations may be noted due to normal produc- R341 D-1 Q801 E-7
tion tolerances. R441 F-1 Q802 E-7
· Circled numbers refer to waveforms. Q803 B-12
· Signal path. IC801 F-6 Q804 B-12
F : AUDIO IC806 G-7 Q805 C-12
IC807 G-7 Q809 G-10
for printed wiring boards: IC808 F-5 Q810 G-12
Note: IC813 G-3 Q811 G-12
· X : parts extracted from the component side. IC814 G-4 Q812 G-12
· : Pattern from the side which enables seeing. IC815 E-7 Q813 G-12
IC901 F-10 Q901 F-9
(The other layer's patterns are not indicated.)
IC902 E-9 Q902 F-9
Q903 G-9
Q101 G-8 Q904 A-8
Q102 D-8 Q905 A-7
Q103 E-9 Q906 A-6
· IC Block Diagram Q104 E-9 Q907 A-5
Q107 E-10 Q908 A-7
Q108 E-10 Q909 A-6
IC901 µPC494GS-T1 Q109 E-11 Q910 E-6
Q110 F-11 Q911 E-5
16 15 14 13 12 11 10 9
ERROR REF. REG.
0.1V
OSC
ERROR
1 2 3 4 5 6 7 8
10 10
XM-754SX
4-2. PRINTED WIRING BOARD -- MAIN SECTION -- · Refer to page 10 for Semiconductor Location and Common Note on Printed Wiring Boards.
(Page 15)
(Page 15)
(Page 15)
11 11
XM-754SX
4-3. SCHEMATIC DIAGRAM -- MAIN SECTION (1/2) -- · Refer to page 10 for Common Note on Schematic Diagrams.
GAIN
GAIN
(Page 14)
GAIN
(Page 14)
GAIN
18
17
(Page 13)
12 12
XM-754SX
4-4. SCHEMATIC DIAGRAM -- MAIN SECTION (2/2) -- · Refer to page 10 for IC Block Diagram and Common Note on Schematic Diagrams.
(Page 12)
18
17
IC B/D
(Page 14)
· Waveform
1V/DIV, 5µsec/DIV
1
3.4Vp-p
15µsec
IC901 5
13 13
XM-754SX
4-5. SCHEMATIC DIAGRAM -- FILTER (F), FILTER (R), LED SECTION -- · Refer to page 10 for Common Note on Schematic Diagrams.
(Page 13)
(Page 12)
(Page 12)
14 14
XM-754SX
4-6. PRINTED WIRING BOARDS -- FILTER (F), FILTER (R), LED SECTION -- · Refer to page 10 for Common Note on Printed Wiring Boards.
(Page 11) (Page 11)
(Page 11)
12
1-679-507- 12
15 15
XM-754SX
MEMO
16 16
XM-754SX
SECTION 5
EXPLODED VIEWS
NOTE:
· The mechanical parts with no reference · Color Indication of Appearance Parts The components identified by
number in the exploded views are not supplied. Example : mark 0 or dotted line with mark
· Items marked "*" are not stocked since KNOB, BALANCE (WHITE) ... (RED) 0 are critical for safety.
they are seldom required for routine service. R R Replace only with part number
Some delay should be anticipated Parts Color Cabinet's Color specified.
when ordering these items. · Accessories and packing materials and
hardware (# mark) list are given in Les composants identifiés par une
the last of this parts list. marque 0 sont critiques pour
la sécurité.
Ne les remplacer que par une piéce
portant le numéro spécifié.
5-1. HEAT SINK (MAIN) SECTION
1
9
2
8
8 3
4
B B
5
A A
#1
#1
6
F901
#1 8
7
#1
#1
#2
#1
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 3-225-079-11 PLATE (HEAT SINK), ORNAMENTAL (US,CND) * 6 3-225-081-01 SHEET, INSULATING
1 3-225-079-51 PLATE (HEAT SINK), ORNAMENTAL (AEP,UK,E) * 7 3-225-068-01 PLATE, BOTTOM
* 2 3-225-071-01 HEAT SINK (MAIN) 8 3-225-185-01 SCREW (+B.TT.3X14)
* 3 3-225-065-01 HOLDER, LED 9 3-225-153-01 SHEET (HEAT SINK), ADHESIVE
4 1-681-206-11 LED BOARD 0 F901 1-533-743-11 FUSE (BLADE TYPE) (AUTO FUSE) 40A
* 5 3-225-152-01 SHEET (LED), INSULATING
17
XM-754SX
5-2. MAIN BOARD SECTION
61 #4
#4