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

ZS-2000
6-6. PRINTED WIRING BOARD — TUNER SECTION — • Refer to page 22 for Circuit Boards Location.
1 2 3
A
B
C
D
E
F
1 MAIN BOARD
CNP305
(Page 42)
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.
4 5 6
(Page 53)
REG BOARD
14
(HEAT SINK)
TP(VT)
• 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
: AM
J
: CD
– 29 –
7 8 9 10
: Solder brideg
1-677-166-
Common Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : internal component.
f
• b : Pattern from the side which enables seeing.
11
• Semiconductor
Location
Ref. No.
ANT1 D1
FM
D2
TELESCOPIC
D3
ANTENNA
D4
D5
D6
D7
D8
D9
IC1
IC2
TM1
FM
ANTENNA
75 Ω
AM
ANTENNA
21
(21)
– 30 –
Location
B-8
B-8
C-5
B-6
D-6
E-9
E-9
B-8
B-8
E-7
D-3