Printed Wiring Boards -Tuner Section - Sony ZS-2000 Service Manual

ZS-2000
6-6. PRINTED WIRING BOARDS — TUNER SECTION —
• Refer to page 24 for Circuit Boards Location.
Common Note on Printed Wiring Boards:
• X : parts extracted from the component side.
•
f : internal component.
• b : Pattern from the side which enables seeing.
Common 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
• 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.
• 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
: FM
f
: MW/LW
J : CD
A
B
C
D
E
F
G
• Semiconductor
Location
H
Ref. No. Location
D1 D-7
D2 D-7
D3 D-7
D4 D-7
D5 D-7
D6 D-7
D7 J-4
I
D8 J-4
D10 D-4
IC1 G-4
IC2 H-6
Q1 F-6
Q2 G-7
J
Q3 H-4
Q4 D-5
Q5 D-6
Q6 C-4
Q7 D-5
Q8 C-5
Q9 D-4
– 31 –
1 2 3
ANT1
FM TELESCOPIC
EXT ANT
ANTENNA
SWITCH BOARD
TU BOARD
S1
FM ANTENNA
S1
SELECTOR
EXT
1-676-091
11
04
4 5 6
J1-2 J1-1
FM EXT MW/LW
ANTENNA ANTENNA
1
MAIN BOARD
(Page 44)
CNP306
– 32 –
7 8
MAIN BOARD
14
CN302
(Page 44)
TP(VT)
TUNER
UNIT
11
1-677-033- (11)