STR-DE445/DE545/SE501
77
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
For schematic diagrams.
Note:
• 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
/
4
W or less unless otherwise
specified.
• % : indicates tolerance.
•
f
: internal component.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
• 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.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
J : CD
c : digital out
• Abbreviation
CND : Canadian model
AUS : Australian model
CH : Chinese model
MY : Malaysia model
SP : Singapore model
TW : Taiwan model
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this necessary note is printed in each
block.)
Note:
The components identified by
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro spécifié.
• Waveform
DIGITAL Board
For printed wiring boards.
Note:
• X : parts extracted from the component side.
•
a
: Through hole.
•
f
: internal component.
• b : Pattern from the side which enables seeing.
DISPLAY Board
C
B
These are omitted.
E
Q
B
These are omitted.
CE
MAIN Board
1 IC1005 25
5.5Vp-p
12.288MHz
1 IC102 is (XO)
3.6Vp-p
16.0MHz
1 IC301 qf (XO)
2.8Vp-p
4.33MHz
AC SEL board (E, PX model)
VIDEO board
DIGITAL board
TUNER UNIT
MAIN board
TUNER SWITCH board
JOG board
DISPLAY board
HEADPHONE board
POWER SWITCH board
STBY board
S-VIDEO board (DE545, SE501 model)
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