TC-S3
13
13
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.
C
E
Q
B
These are omitted.
C
E
Q
Note on Schematic Diagram:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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 M
Ω
).
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
µ
s
10 Vp-p
13
µ
s
52 Vp-p
13
µ
s
• IC Block Diagram
– MAIN Board –
IC302
µ
PC1330HA
1
2
3
4
5
6
7
8
9
INVERTER
COMPARATER
SW R1
GND
SW P1 CONT
GND
VCC
SW P2 GND
SW R2
• Circuit Boards Location
LEAF SW board
HEAD (A) board
HEAD (B) board
TC-SUB PANEL-A board
TC-SUB PANEL-B board
TC-PANEL-A DECK board
TC-PANEL-B DECK board
MAIN board
Summary of Contents for TC-S3
Page 29: ...29 TC S3 MEMO ...
