Note For Printed Wiring Boards And Schematic Diagrams; Schematic Diagram - Fm Tuner Section - Sony SS-CEP50 Service Manual

6-5.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• W : indicates side identified with part number.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
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: Note:
The components identi- Les composants identifiés par
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti- pour la sécurité.
Ne les remplacer que par une
cal for safety.
pièce por tant le numéro
Replace only with part
spécifié.
number specified.
• A : B+ Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM
{
} : CD PLAY
[ ] : TAPE PLAY
< > : RECORD (ISS 1)
〈〈 〉〉 : RECORD (ISS 2)
∗
: Impossible to measure
• 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
E : TAPE PLAY
a : RECORD
J : CD PLAY
• Abbreviation
AR : Argentina model
CH : Chinese model
CND : Canadian model
HK : Hong Kong model
MX : Mexican model
SP : Singapore model
6-6. SCHEMATIC DIAGRAM – FM TUNER Section – •
(INCLUDED IN MAIN BOARD)
0.001
0.047
0.047 0.047
0.047
0.001
0.047 0.047 L902, TC901
FM TRACKING
FM RF AMP/MIX/OSC
B. P. F.
1 2 3
19 19
See page 28 for IC Block Diagram.
(EXCEPT AEP, UK, CH)
0.001
FM OSC
L901
3.4
FM FREQUENCY
0.8
COVERAGE
0.047
0.047
FM OSC
BUFFER
L902
FM RF
0.047
0.047
IC901
IC B/D
0.047 1 5
0.001
1SS133T 4
3
0.047
HCD-EP50
Ver 1.1
i OSCO
i VCC
G
MAIN
BOARD
(1/3)
(Page
20)
i GND
i GND
i
GND
i IF OUTPUT
i
RF INPUT
i VT