Sony ZS-S50CP, Руководство по обслуживанию

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ZS-S50CP
19 19
ZS-S50CP
TERMNAL (A) board
TERMNAL (B) board
KEY (TOP-L) board
KEY (TOP-R) board
TU board
LCD board
MAIN board
MOTOR board
CD board
PANEL (TOP) board
JACK (AU IN) board
JACK (HP) board
POWER board
•
A : B+ Line.
•
H
: adjustment for repair.
•
Power voltage is dc 4.5 V and fed with regurated dc power
supply from pin
1 and 4 of KH905 on the TERMINAL
(A) board, and power voltage is dc 9 V and fed with
regurated dc power supply from pin
3
and
4
of KH905
on the TERMINAL (A) board.
•
Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– CD Board –
no mark :CD PLAY
– TU Board –
no mark : FM
(
) : AM
– Other Boards –
no mark : FM
(
) : CD PLAY
•
Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Waveform are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
•
Circled numbers refer to waveform.
•
Signal path.
F
: FM
f
: AM
J : CD PLAY
i : AUDIO IN
•
Abbreviation
EE
: East European model
IT : Italian model
MX : Mexican model
RU : Russian model
SP : Singapore model
TH : Thai model
•
Note for Printed Wiring Boards and Schematic Diagrams
Note on Schematic Diagram:
•
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
specified.
•
f
: internal component.
•
C
: panel designation.
Note on Printed Wiring Board:
•
X : parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
W
: indicates side identified with part number.
•
f
: internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
Circuit Boards Location
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
•
Indication of transistor
C
B
These are omitted.
E
Q
Ver. 1.1