2727
HCD-HP7
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
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
f
: internal component.
• : Pattern from the side which enables seeing.
• A : B+ Line.
• B : B– Line.
•Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
∗
: Impossible to measure
•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.
•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 : TUNER
J : CD
L : MD
E : PB (TAPE)
a : REC (TAPE)
c : DIGITAL OUT
•Abbreviation
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.
• Indication of transistor
B
These are omitted.
CE
Q
C
B
These are omitted.
E
Q
•Waveforms
– BD Board –
1
IC721 4 (RF)
(CD Play Mode)
1.3 Vp-p
2
IC721 qd (FE)
(CD Play Mode)
3
IC721 qg (TE)
(CD Play Mode)
4
IC721 rk (XOUT)
(CD Play Mode)
180 mVp-p
150 mVp-p
4 Vp-p
200 mV/DIV, 400 ns/DIV
100 mV/DIV, 1 ms/DIV
100 mV/DIV, 1 ms/DIV
1 V/DIV, 20 ns/DIV
59 ns
5
IC601 qd (XT2)
3.4Vp-p
30.5
µ
s
1V/DIV,
10
µ
s/DIV
1V/DIV,
40 ns/DIV
3Vp-p
6
IC601 qh (CF2)
125 ns
– PANEL Board –
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.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal 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
piéce portant le numéro
spécifié.
B
These are omitted.
CE
Q
– MAIN Board –
12 Vp-p
13
µ
s
5V/DIV, 4
µ
s/DIV
7
Q207 collector(REC Mode)
B
C
E
These are omitted.
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