Sony TA-FA30ES Service Manual ▷ View online
– 5 –
MAIN BOARD
2
connector
(CN752)
(CN752)
3
connector
(CN104)
(CN104)
1
connector
(CN751)
(CN751)
4
three screws
(BV/RING)
(BV/RING)
5
four screws
(3
(3
×
8)
7
main board
6
four screws
(3
(3
×
8)
5
four screws
(3
(3
×
8)
5
three screws
(3
(3
×
8)
– 6 –
Bias Adjustment
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.
3. Set the slidack to 0 V, and press the
U button (ON) on the
set.
4. Raise gradually the slidack voltage up to the rated voltage
(230 V).
5. At this time, confirm that the SP relay is turned on (it will
click), and at the same time, the LED on the
U button changes
from red to green.
6. Adjust the RV500 and RV600 so that a reading of digital volt-
meter is 10 mV ± 2 mV.
7. Return the slidack to 0 V, and press the
U button (OFF) on
the set.
Adjustment Location:
1 pin
3 pin
CN500
+
–
CN600
–
+
SECTION 3
ELECTRICAL ADJUSTMENTS
C720
C721
Q507
Q607
RV600
RV500
CN500
CN600
1
1
3
3
MAIN Board (Component Side)
– 7 –
– 8 –
SECTION 4
DIAGRAMS
• Circuit Boards Location
4-1.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block.)
Note on Schematic Diagram:
• 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.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
Note on Printed Wiring Boards:
•
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
• Indication of transistor.
•
U
: B+ Line.
•
V
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal 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.
K
: TUNER
NOTE: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
SP TM board
PS board
MAIN board
PHONO board
INPUT board
VOL board
SW board
LED board
PANEL board
HP board
POWER LED board
4-2.
PRINTED WIRING BOARDS – INPUT Section –
•
See page 7 for circuit Boards Location.
TA-FA30ES
– 9 –
– 10 –
Ref. No.
Location
Ref. No.
Location
D101
C-6
D103
D-4
D104
D-3
D105
D-3
D106
C-3
D107
B-3
D108
A-3
D109
A-3
D110
D-4
D151
C-9
D251
C-9
• Semiconductor Location
Q100
C-5
Q101
C-5
Q102
C-5
Q103
C-6
Q104
C-6
Q105
C-6
Q152
C-9
Q252
C-9
(Page 14)
(Page 18)
(Page 17)
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