Sony HCD-DR8AV Service Manual page 27

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 and 1 / W or less unless otherwise
4
specified.
• ¢ : internal component.
• C : panel designation.
Note: Note:
The components identi- Les composants identifiés par
fied by mark ! or dotted une marque ! sont critiques
line with mark ! are criti- pour la sécurité.
Ne les remplacer que par une
cal for safety.
piéce por tant le numéro
Replace only with part
spécifié.
number specified.
• 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 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
: FM
g : VIDEO/MD
E
: PB (DECK A)
d
: PB (DECK B)
G : REC (DECK B)
J : CD
c : digital out
I : PHONO
• Abbreviation
CND : Canadian model
AUS : Australian model
EA : Saudi Arabia model
MX : Mexican model
SP : Singapore model
AR : Argentina model
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• ® : Through hole.
• ¢ : internal component.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
B C E
These are omitted
C
Q
These are omitted
B E
— 35 —
Waveforms
– BD SECTION –
1
3.1Vp-p
16.9MHz
IC101 ^¶ XTAI
2
1.2Vp-p
(PLAY)
IC101 %¡ RF AC
3
2.5V
APPROX 500mVp-p (PLAY)
IC101 $¡ TE
4
2.5V
APPROX 200m Vp-p (PLAY)
IC101 #ª FE
5
2.4Vp-p
7.5 sec
IC101 @§ MDP
HCD-DR8AV/W900AV
– MAIN (2/5) Section –
1
5.5Vp-p
16MHz
IC501 !£ X-OUT
2
5.2Vp-p
32.768kHz
IC501 !¡ XC-OUT
– FL Section –
1
3.4Vp-p
12.5MHz
IC601 &™ X-OUT
— 36 —