Sony HCD-EX1 Service Manual page 15

THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
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
/ W or less unless otherwise
4
specified.
• ¢ : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
une marque ! sont critiques
fied by mark ! or dotted
pour la sécurité.
line with mark ! are criti-
Ne les remplacer que par une
cal for safety.
piéce portant le numéro
Replace only with part
number specified. spécifié.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages and waveforms are dc with respect to ground in
service mode.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : STOP
• Circled numbers refer to waveforms.
• Signal path.
J : CD
c : digital out
• Abbreviation
CND : Canadian model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ® : Through hole.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
C
Q
These are omitted
B C E
B E
These are omitted
WAVEFORMS
– MAIN (1/3) SECTION –
1
3.1Vp-p
16.9MHz
IC304 6 XTO
2
1.2Vp-p
(PLAY)
IC303 %º RF AC
3
2.5V
APPROX 500mVp-p (PLAY)
IC303 $¡ TE
4
2.5V
APPROX 200m Vp-p (PLAY)
IC303 #ª FE
5
2.4Vp-p
7.5µsec
IC303 @∞ MDP
– MAIN (3/3) SECTION –
6
5Vp-p
32.768kHz
IC701 !£ XT2
7
5.5Vp-p
5MHz
IC701 0 X2
15 15
HCD-EX1