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Q Q
3 7 6 3 1 5 1 5 0
3-1. CIRCUIT BOARDS LOCATION
MAIN board
STAND BY board
DISPLAY board
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
.
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SECTION 3
DIAGRAMS
DIGITAL board
OPTICAL board
SIGNAL BRIDGE board
x
a o
u 1 6 3
y
i
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8
9
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Note on Printed Wiring Board:
• X : parts extracted from the component side.
•
: internal component.
f
• b : Pattern from the side which enables seeing.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the parts face are indicated.
• Indication of transisitor.
Q
B
C E
These are omitted.
Q
B
C
E
These are omitted.
C
Q
These are omitted.
B
E
Q
Q
3
7
6
3
1
5
1
c o
.
5
5
2
4
2
9
8
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
specified.
•
: internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
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 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
: ANALOG
c : DIGITAL
• Waveform
5
0
8
9
2
4
9
8
2
1
IC1502 is XO
16 MHz
m
9
9
1
/
W or less unless otherwise
4
9
9
5.6 Vp-p
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