Read Sony STR-DE445 / STR-DE545 / STR-SE501 Service Manual online
STR-DE445/DE545/SE501
7
7
SECTION 3
DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
For schematic diagrams.
Note:
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
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.
• 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
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
No mark : FM
No mark : FM
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
• Circled numbers refer to waveforms.
• Signal path.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
J
: CD
c
: digital out
• Abbreviation
CND : Canadian model
AUS
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.)
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.
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.
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
DIGITAL Board
For printed wiring boards.
Note:
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.
C
E
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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