Sony HCD-HP7 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 Ω and
1 / W or less unless otherwise
4
specified.
• : internal component.
f
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted une marque 0 sont critiques
line with mark 0 are criti- pour la sécurité.
Ne les remplacer que par une
cal for safety.
piéce por tant le numéro
Replace only with part
number specified. spécifié.
• A : B+ Line.
• B : B– Line.
• V oltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
∗
: Impossible to measure
• V oltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• W aveforms are taken with a oscilloscope.
• W aveforms 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
: CD
L : MD
E : PB (TAPE)
a
: REC (TAPE)
c : DIGITAL OUT
• A bbreviation
AUS : Australian model.
CND : Canadian model.
E2 : 120 V AC area in E model.
E3 : 220-240 V AC area in E model.
KR : Korean model.
MX : Mexican model.
RU : Russian model.
TH : Thai model.
TW : Taiwan model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : internal component.
f
• : Pattern from the side which enables seeing.
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.
C
These are omitted.
B E
• Waveforms
– BD Board – – PANEL Board –
1 5
IC721 4 (RF)
(CD Play Mode)
1.3 Vp-p
200 mV/DIV, 400 ns/DIV
2 6
IC721 qd (FE)
(CD Play Mode)
180 mVp-p
1V/DIV,
100 mV/DIV, 1 ms/DIV
40 ns/DIV
3
IC721 qg (TE)
(CD Play Mode)
150 mVp-p
100 mV/DIV, 1 ms/DIV
4
IC721 rk (XOUT)
(CD Play Mode)
4 Vp-p
59 ns
1 V/DIV, 20 ns/DIV
27 27
– MAIN Board –
7
Q207 collector(REC Mode)
IC601 qd (XT2)
3.4Vp-p
13 µ s
30.5 µ s
1V/DIV,
5V/DIV, 4 µ s/DIV
10 µ s/DIV
IC601 qh (CF2)
3Vp-p
125 ns
HCD-HP7
12 Vp-p