Sony TA-FB740R Service Manual ▷ View online
5
5
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
• 5 : fusible resistor.
• C : panel designation.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• b : Pattern from the side which enables seeing.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : POWER ON
no mark : POWER ON
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: TUNER
WAVEFORM
1
IC902 1 XOUT
• Indication of transistor
C
These are omitted
E
B
4MHz
3.8Vp-p
PANEL board
INPUT board
MAIN board
SP-TM board
PHONO board
PS board
OUTLET board
(EXCEPT UK, SP, MY)
(EXCEPT UK, SP, MY)
VOL board
SIRCS board
SIRCS SUB board
HP board
SP-SW board
• Abbreviation
G
: German model
SP
: Singapore model
MY
: Malaysia model
AUS
: Australian model
EE
: East European model
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
6
6
TA-FB740R
3-2. SCHEMATIC DIAGRAM – INPUT SECTION – • See Page 14 for IC Block Diagrams.
(Page 8)
(Page 10)
(Page 10)
*
C101–105
C201–205
2SD2525
470
470
R140
R240
82 1W
82 1W
63V
63V
10
10
22
22
2SB1640
,MY
,MY
,MY
JW12
JW12
MODEL
,MY
MODEL
16V
16V
EXCEPT UK, SP, MY
*
*
*
*
*
*
*
*
*
*
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Replace only with part number specified.
7
7
TA-FB740R
9
11
11
3-3. PRINTED WIRING BOARD – INPUT SECTION – • See page 5 for Circuit Boards Location.
Ref. No.
Location
• Semiconductor
Location
(INPUT Board)
(INPUT Board)
D100
D-5
D101
D-4
D102
D-4
D103
C-4
D104
B-4
D105
A-4
D106
A-4
D107
D-5
D108
C-7
D140
C-9
D240
C-9
Q100
C-6
Q101
C-6
Q102
C-6
Q103
C-7
Q104
C-7
Q105
C-7
Q140
C-9
Q240
D-9
Ref. No.
Location
• Semiconductor
Location
(PHONO Board)
(PHONO Board)
D170
B-1
IC150
A-2
Q150
A-3
Q151
A-3
Q250
B-3
Q251
B-3
8
8
TA-FB740R
3-4. SCHEMATIC DIAGRAM – MAIN SECTION – • See page 14 for IC Block Diagrams.
EXCEPT UK, SP, MY
EXCEPT
UK, SP, MY
UK, SP, MY
Click on the first or last page to see other TA-FB740R service manuals if exist.