Diagrams; Note For Printed Wiring Boards And Schematic Diagrams - Sony HCD-CQ1 Service Manual

6-1. Note for Printed Wiring Boards and Schematic Diagrams

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
spécifié.
number specified.
• 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 MΩ).
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.
SECTION 6

DIAGRAMS

For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : internal component.
f
• : Through hole.
a
•
: Pattern from the side which enables seeing.
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.
• Indication of transistor
Q
B C E
These are omitted.
Q
B C E
These are omitted.
C
Q
These are omitted.
B E
• Circuit Boards Location
PANEL board
LOADING board
REMOCON board
· Waveforms
– BD Board –
1 2
IC103 qg (RFAC) IC101 wh (MDP)
(CD play mode) (CD play mode)
7.6 µ s
0.9 ± 0.4Vp-p
200mV/DIV, 400ns/DIV 1V/DIV, 2 µ s/DIV
5 6
IC101 rd (RFDC) IC101 yj (XTAO)
(CD play mode)
59.1ns
0.8 ± 0.4Vp-p
200mV/DIV, 400ns/DIV 1V/DIV, 20ns/DIV
21 21
JACK board
BD board
REG board
CONTROL board
POWER board
3 4
IC101 el (FE) IC101 ra (TE)
(CD play mode) (CD play mode)
2Vp-p
0.4Vp-p
200mV/DIV, 200ms/DIV 200mV/DIV, 200ms/DIV
– CONTROL Board –
7
IC101 qd (X-OA)
3.5Vp-p
2.4Vp-p
30.5 µ s
1V/DIV, 10 µ s/DIV
HCD-CQ1
0.3Vp-p
8
IC101 od (XO)
3.4Vp-p
167 ns
1V/DIV, 40ns