Sony HCD-EX66, Service Manual

Page: 20 / 74

HCD-EX66/EX88/EX99
HCD-EX66/EX88/EX99
20 20
For Schematic Diagrams.
Note:
• All capacitors are in
μ
F unless otherwise noted. (p: pF) 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
speci fi ed.
•
f
: Internal component.
•
2
: Non fl ammable resistor.
•
C
: Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– BD76 Board –
no mark : CD PLAY
– Other Boards –
no mark : TUNER (FM/AM)
* : Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: TUNER (FM)
f : TUNER (AM)
J
: CD
E
: USB
q
: DVD/PC IN
• Abbreviation
AR :
Argentina model
E2 : 120V AC area in E model
E4 : 220 – 240V AC area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• : Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Abbreviation
AR :
Argentina model
E2 : 120V AC area in E model
E4 : 220 – 240V AC area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model
Note: The components identi fi ed by mark 0 or dotted
line with mark
0
are critical for safety.
Replace only with part number speci fi ed.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A) Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• Circuit Boards Location
PANEL board
AMP SMPS board
EFX-MODULE board
TUNER board
BD76 board
LOADING board
REGULATOR board
(EX88/EX99)
• Waveforms
– BD76 Board –
– TUNER Board –
– PANEL Board –
16.934 MHz
200 mV/DIV, 500 nsec/DIV
1 V/DIV, 20 nsec/DIV
1 IC101
2
(RFOUT)
(CD play mode)
2 IC101
us
(XOUT)
0.6 to 1.5 Vp-p
2.6 Vp-p
1 V/DIV, 20 nsec/DIV
3 IC901
7
(CF2)
12 MHz
3.1 Vp-p
20 MHz
32.768 kHz
1 V/DIV, 10
P
sec/DIV
1 V/DIV, 50 nsec/DIV
1 IC302
qd
(Sub Clock)
2 IC302
qh
(Main Clock)
2.9 Vp-p
3.3 Vp-p
200 mV/DIV, 5
P
sec/DIV
1
IC502
ql
(X2)
32.768 kHz
0.6 Vp-p