Read Sony TA-FB740R Service Manual online
1
AEP Model
UK Model
E Model
Australian Model
SPECIFICATIONS
SERVICE MANUAL
INTEGRATED STEREO AMPLIFIER
TA-FB740R
Amplifier section
DIN power output
100 W + 100 W (4
Ω at 1 kHz)
60 W + 60 W (8
Ω at 1 kHz)
Total harmonic distortion
Less than 0.008% (at 10 W output 1 kHz)
Frequency response
PHONO (20 Hz - 20 kHz): RIAA equalization curve
±0.5 dB
TUNER, SACD/CD, AUX, TAPE1/DAT, TAPE2/MD:
7 Hz - 300 kHz
±0.5 dB
TUNER, SACD/CD, AUX, TAPE1/DAT, TAPE2/MD:
7 Hz - 300 kHz
+0
–3
dB
S/N (network A)
PHONO
TUNER, SACD/CD, AUX, TAPE1/DAT, TAPE2/MD:
105 dB
105 dB
90 dB
Output voltage/impedance
REC OUT 1, 2: 150 mV, 1 k
Ω
PHONES: 10 mW (at 8
Ω)
Speakers impedance
4 - 16
Ω, 8 - 16 Ω (SPEAKERS A+B)
Damping factor
500 (8
Ω, 1 kHz)
General
System
Power amplifier: Pure-complementary SEPP OCL
power amplifier with all stages directly coupled
Preamplifier: Low-noise, equalizer amplifier
power amplifier with all stages directly coupled
Preamplifier: Low-noise, equalizer amplifier
Power requirements
230 V AC, 50/60 Hz
Power consumption
180 W
Dimensions (approx.) (w/h/d)
430
× 150 × 420 mm
incl. projecting parts and controls
Mass (approx.)
8.6 kg
Supplied accessories
• Remote commander (remote) (1) RM-S336
• Sony batteries R6 (size-AA) (2)
• Sony batteries R6 (size-AA) (2)
Design and specifications are subject to change without
notice.
2
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.
TABLE OF CONTENTS
1. GENERAL
.......................................................................... 3
2. ELECTRICAL ADJUSTMENT
..................................... 4
3. DIAGRAMS
3-1. Circuit Boards Location ........................................................ 5
3-2. Schematic Diagram – Input Section – .................................. 6
3-3. Printed Wiring Board – Input Section – ................................ 7
3-4. Schematic Diagram – Main Section – .................................. 8
3-5. Printed Wiring Board – Main Section – ................................ 9
3-6. Schematic Diagram – Panel Section – ................................ 10
3-7. Printed Wiring Board – Panel Section – ............................. 11
3-8. Schematic Diagram – Power Section – ............................... 12
3-9. Printed Wiring Board – Power Section – ............................ 13
3-10. IC Block Diagrams ............................................................ 14
3-11. IC Pin Function ................................................................. 14
3-2. Schematic Diagram – Input Section – .................................. 6
3-3. Printed Wiring Board – Input Section – ................................ 7
3-4. Schematic Diagram – Main Section – .................................. 8
3-5. Printed Wiring Board – Main Section – ................................ 9
3-6. Schematic Diagram – Panel Section – ................................ 10
3-7. Printed Wiring Board – Panel Section – ............................. 11
3-8. Schematic Diagram – Power Section – ............................... 12
3-9. Printed Wiring Board – Power Section – ............................ 13
3-10. IC Block Diagrams ............................................................ 14
3-11. IC Pin Function ................................................................. 14
4. EXPLODED VIEW
4-1. Case Section ........................................................................ 15
4-2. Front Panel Section ............................................................. 16
4-3. Chassis Section ................................................................... 17
4-2. Front Panel Section ............................................................. 16
4-3. Chassis Section ................................................................... 17
5. ELECTRICAL PARTS LIST
........................................ 18
3
Front Panel Descriptions
SECTION 1
GENERAL
This section is extracted from
instruction manual.
instruction manual.
Rear Panel Descriptions
SPEAKERS
EON CONTROL
R
B
A
L
+
+
–
–
R
L
+
+
–
–
TAPE1/DAT
L
REC OUT
IN
IMPEDANCE USE 4–16
Ω
A+B USE 8–16
Ω
BI WIRE USE 4–16
Ω
IN
R
L
R
TAPE2/MD
REC OUT
IN
AUX
IN
SACD/
CD
IN
TUNER
IN
L
R
PHONO
IN
SIGNAL
GND
U
AC OUTLET
SWITCHED 100W MAX
4
2
3
5
1
0
qa
9
8
7
6
1 PHONO
2
2
U (SIGNAL GND)
3 SPEAKERS A/B
6 Mains lead
7 TAPE1/DAT
8 TAPE2/MD
7 TAPE1/DAT
8 TAPE2/MD
4 EON CONTROL IN
5 AC OUTLET
5 AC OUTLET
(Except UK, Singapore, Malaysia)
9 AUX
0 SACD/CD
qa TUNER
0 SACD/CD
qa TUNER
1 PROTECTION indicator
2 POWER button
3 Remote sensor
4 TAPE 1/DAT indicator
5 TAPE 2/MD indicator
6 AUX indicator
7 CD indicator
8 TUNER indicator
9 PHONO indicator
2 POWER button
3 Remote sensor
4 TAPE 1/DAT indicator
5 TAPE 2/MD indicator
6 AUX indicator
7 CD indicator
8 TUNER indicator
9 PHONO indicator
10 INPUT SELECTOR knob
11 VOLUME knob
12 SUBSONIC button
11 VOLUME knob
12 SUBSONIC button
13 SOURCE indicator
14 SOURCE DIRECT button and indicator
15 LOUDNESS button
16 TAPE MONITOR knob
17 BALANCE knob
18 TREBLE knob
19 BASS knob
20 SPEAKERS knob
21 PHONE jack
22 EON LINK button
23 EON LINK indicator
14 SOURCE DIRECT button and indicator
15 LOUDNESS button
16 TAPE MONITOR knob
17 BALANCE knob
18 TREBLE knob
19 BASS knob
20 SPEAKERS knob
21 PHONE jack
22 EON LINK button
23 EON LINK indicator
22
23
13
12
14
15
16
17
18
19
20
21
3
2
1
9
7
8
4
6
5
10
11
4
SECTION 2
ELECTRICAL ADJUSTMENT
Bias Adjustment
NOTE:
1. Perform the adjustment after the unit has warmed up sufficiently.
2. Perform the bias adjustment if the power transistor has been
NOTE:
1. Perform the adjustment after the unit has warmed up sufficiently.
2. Perform the bias adjustment if the power transistor has been
replaced.
Procedure:
1. Rotate fully the bias adjusting semi-fixed resistors (RV500,
1. Rotate fully the bias adjusting semi-fixed resistors (RV500,
RV600) to the MIN position (counterclockwise).
2. Connect a digital voltmeter to the CN500 and CN600.
1 pin
2 pin
–
–
+
+
CN500 (L-CH)
CN600(R-CH)
3. Set the slide regulator to 0V, and press the POWER button
(ON) on the set.
4. Raise gradually the slide regulator voltage up to the rated voltage.
5. At this time, confirm that the SP relay is turned on (it will click).
6. Adjust the RV500 and RV600 so that a reading of digital
5. At this time, confirm that the SP relay is turned on (it will click).
6. Adjust the RV500 and RV600 so that a reading of digital
voltmeter is 7 ± 1 mV.
7. Return the slidack to 0 V, and press the POWER button (OFF)
on the set.
Adjustment Location :
[MAIN BOARD] – COMPONENT SIDE –
+
CN600
(R-CH)
(R-CH)
CN500
(L-CH)
(L-CH)
1 2
2 1
RV600
Bias (R-CH)
Bias (R-CH)
RV500
Bias (L-CH)
Bias (L-CH)
DIGITAL
VOLTMETER
VOLTMETER
DIGITAL
VOLTMETER
VOLTMETER
+