Sony ZS-PS20CP, Руководство по обслуживанию

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ZS-PS20CP
ZS-PS20CP
19 19
• Waveforms
– CD Board –
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.
•
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.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
[ ] : USB
– MAIN (1/3) Board –
no mark : FM
( ) : AM
– CD Board –
no mark : CD PLAY
[ ] : USB
– MAIN (2/3), (3/3) and Other Boards –
no mark : FM
( ) : AM
< > : CD PLAY
[ ] : USB
• 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
: FM
f
: AM
L
: AUDIO IN
J
: CD PLAY
c
: USB
• Abbreviation
AUS :
Australian model
KR : Korea model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
•
Y
: Parts extracted from the conductor side.
•
W
: indicates side identi fi ed with part number.
•
f
: internal component.
• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
E
B
These are omitted.
C E
• Abbreviation
AUS :
Australian model
KR : Korea model
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side) 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.
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.
• Circuit Boards Location
HEADPHONE board
LCD board
USB RELAY (1) board
KEY (FUNC) board
KEY (VOL) board
MAIN board
BATTERY (1) board
BATTERY (2) board
AUDIO IN board
CD board
POWER board
1 V/DIV, 10
μ
sec/DIV
IC1
X
(X OUT)
1 V/DIV, 20
μ
sec/DIV
IC801
RE
(XT2)
1 V/DIV, 0.05
μ
sec/DIV
IC801
RI
(CF2)
75 kHz
32.768 kHz
3.6 Vp-p
9.98 MHz (FM)
10.0 MHz (AM, CD, USB)
2.8 Vp-p
2.2 Vp-p
IC701 (RF MON (FE))
IC701
RI
(TE)
100 mV/DIV, 2 msec/DIV
500 mV/DIV, 0.5
μ
sec/DIV
100 mV/DIV, 2 msec/DIV
IC701
VT
(XOUT)
1 V/DIV, 0.05
μ
sec/DIV
IC702 (CF1) (USB PLAY)
1 V/DIV, 50
μ
sec/DIV
IC701 (RF OUT)
Approx. 100 mVp-p
16.9344 MHz
1.6 V
1.1 ± 0.4 Vp-p
2.3 Vp-p
Approx. 100 mVp-p
1.6 V
12 MHz
2.5 Vp-p
– MAIN Board –