Diagrams; Circuit Boards Location - Sony HCD-ED2 Service Manual

6-1. CIRCUIT BOARDS LOCATION

RDS board
RELAY board
TOUCH
SENSOR board
LED board
DISPLAY board
SECTION 6

DIAGRAMS

TAPE PREAMP board
BD board
CD SW board
FUNCTION board
POWER IC board
AC IN board
POWER AMP board
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.
• 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.
cal for safety. Ne les remplacer que par une
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 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 : FM
g : VIDEO
E : PB (DECK A)
G : REC
J : CD
c : CD (digital out)
• Abbreviation
CND : Canadian model.
SP : Singapore model.
MY : Malaysia model.
HK : Hong Kong model.
KR : korea model.
AUS : Australian model.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• : parts mounted on the conductor side.
p
• : Through hole.
®
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor
C
Q
B C E
B E
These are omitted
13 13
WAVEFORMS
– BD (CD) SECTION –
1
3.1Vp-p
16.9MHz
IC101 ^¶ XTAO
2
1.2Vp-p
(PLAY)
IC101 %¡ RF AC
3
APPROX 500mVp-p (PLAY)
IC101 $¡ TE
4
APPROX 200m Vp-p (PLAY)
IC101 #ª FE
5
2.4Vp-p
7.5µsec
IC101 @§ MDP
– DISPLAY SECTION –
1
3.4Vp-p
12.5MHz
IC201 2 X OUT
These are omitted
HCD-ED2
2.5V
2.5V