Sony HCD-CQ1, Service Manual

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HCD-CQ1
SECTION 6
DIAGRAMS
• Circuit Boards Location
BD board
REG board
POWER board
CONTROL board
JACK board
REMOCON board
LOADING board
PANEL board
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.
•
a
: Through hole.
•
: 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.
no mark : FM
(
) : CD PLAY
< > : CD STOP
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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
: TUNER
J
: CD
d
: LINE
• Abbreviation
CND : Canadian model.
MX
: Mexican model.
TW : Taiwan model.
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Conductor Side) pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Component Side) 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 por tant le numéro
spécifié.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
• Indication of transistor
B
These are omitted.
C E
Q
C
B
These are omitted.
E
Q
B
These are omitted.
C E
Q
6-1. Note for Printed Wiring Boards and Schematic Diagrams
· Waveforms
– BD Board –
1
IC103
qg
(RFAC)
(CD play mode)
0.9 ± 0.4Vp-p
200mV/DIV, 400ns/DIV
2
IC101
wh
(MDP)
(CD play mode)
2Vp-p
1V/DIV, 2 µ s/DIV
7.6 µ s
3
IC101
el
(FE)
(CD play mode)
0.4Vp-p
200mV/DIV, 200ms/DIV
4
IC101
ra
(TE)
(CD play mode)
0.3Vp-p
200mV/DIV, 200ms/DIV
5
IC101
rd
(RFDC)
(CD play mode)
0.8
±
0.4Vp-p
200mV/DIV, 400ns/DIV
6
IC101
yj
(XTAO)
3.5Vp-p
1V/DIV, 20ns/DIV
59.1ns
7
IC101
qd
(X-OA)
2.4Vp-p
1V/DIV, 10 µ s/DIV
30.5
µ
s
8
IC101
od
(XO)
3.4Vp-p
1V/DIV, 40ns
167 ns
– CONTROL Board –