TC-S3
1313
SECTION 7
DIAGRAMS
7-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
• Indication of transistor.
B
These are omitted.
CE
Q
B
These are omitted.
CE
Q
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
/
4
W or less unless otherwise
specified.
• 5 : fusible resistor.
• C : panel designation.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : STOP
( ) : PB
〈〈 〉〉 : REC
• 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.
E : PB
a : REC
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• Waveforms
– MAIN Board –
1 T301 4 (DECK-B REC mode)
2 Q301, 303 (collector) (REC mode)
3 NO312 6 (L-REC), 3 (R-REC)
(DECK-B REC mode)
120 Vp-p
13 µs
10 Vp-p
13 µs
52 Vp-p
13 µs
• IC Block Diagram
– MAIN Board –
IC302 µPC1330HA
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