Diagrams; Note For Printed Wiring Boards And Schematic Diagrams - Sony STR-DB1070 - Fm Stereo/fm-am Receiver Service Manual

5-1.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
• Indication of transistor
C
Q
These are omitted.
B E
Q
B C E
These are omitted.
Q
B C E
These are omitted.
SECTION 5

DIAGRAMS

Note on Schematic Diagram:
• All capacitors are in F unless otherwise noted. pF:
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• C : panel designation.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M ).
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
: TUNER
J
: AUDIO IN (ANALOG)
c : AUDIO IN (DIGITAL)
E
: VIDEO IN
• Abbreviation
CH : Chinese model
CND : Canadian model
E2 : 120 V AC area in E model
E3 : 240 V AC area in E model
KR : Korean model
MY : Malaysia model
SP : Singapore model
TW : Taiwan model
STR-DB870/DB1070
1
and / W or less unless otherwise
4
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce por tant le numéro
spécifié.
F
13