Diagrams; Notes For Printed Wiring Board; And Schematic Diagram - Sony ta-ve170 Service Manual

QQ
3 7 63 1515 0
• Circuit Boards Location
SECONDARY board
PW.SW borad
4-1. NOTES FOR PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM
TE
L 13942296513
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.
¢
• 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 num-
ber specified.
• U : B+ Line.
• V : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
• 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
: FRONT/AUDIO IN
f
: REAR
E
: CENTER
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j
: WOOFER
.
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SECTION 4

DIAGRAMS

PRIMARY board
DISPLAY board
Note:
x ao
y
i
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8
STANDBY board
JOG board
Q Q
3 6 7 1 3
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
• Indication of transistor.
C
Q
These are omitted.
B E
• Waveforms
– MAIN Board –
1 IC300 #¡ (OSC)
8 MHz
– DISPLAY Board –
1 IC201 #¢ (X1)
u163
.
4.19 MHz
2 9 9 4 2 8
MAIN board
1 5 0 5 8 2 9 9 4
Q
B C E
These are omitted.
3.4 Vp-p
m
co
4.3 Vp-p
9 9
2 8 9 9