Diagrams; Note For Printed Wiring Boards And Schematic Diagrams - Sony ST-SE370 Service Manual

Q Q
3 7 6 3 1 5 1 5 0
5-1.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

(In addition to this, the necessary note is printed in each block)
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
• Indication of transistor.
Q
B C E
These are omitted.
T E
L 1 3 9 4 2 2 9 6 5 1 3
• Waveforms
– DISPLAY Board – – MAIN Board –
1 IC701 eg (X2) 2 IC801 qf (OSCO) (AEP, UK model only)
w w w 5.4 Vp-p
.
4.2 MHz
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SECTION 5

DIAGRAMS

Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
∗
: Can not be measured.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
4.8 Vp-p
x a o
y
i
4.332 MHz
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8
• Circuit Boards Location
AC SW board
DISPLAY board
Q Q
3 7 6 3 1
u 1 6 3
.
9 9
2 4
9 9 8
MAIN board
ENCORDER board
SW board
5 1 5 0 8 9 2 4 9
m
c o
ST-SE370
2
9 9
TUNER (PACK)
8 2 9 9