Sony CAS-1, Service Manual

Page: 38 / 98

CAS-1
CAS-1
38 38
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.
• 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 conditions and state of connecting to two
speakers (SS-HW5).
no mark : POWER ON (Headphone is not connected)
( ) : POWER ON (Headphone is connected)
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M

).
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
: AUDIO (ANALOG)
J
: AUDIO (DIGITAL)
E
: USB
d
: BLUETOOTH
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
•
Y
: Parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
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.
• Indication of transistor.
C
B
These are omitted.
E
Q
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.
• MAIN board is multi-layer printed board. However, the
patterns of intermediate layers have not been included in
diagrams.
• Circuit Boards Location
MAIN board
B TO B board
NFC module
(RC-S730) (NFC1)
LED board
VOL board
USB board
HP board
NETWORK board
AMP board
BLUETOOTH module
(BT1)
Note 1: When the complete MAIN board is replaced, refer to
“WRITING OPERATION OF SERIAL NUMBER
AFTER REPLACING THE MAIN BOARD” on
page 6.
Note 2:
The MAIN board has been changed in the midway of
production.
When the complete MAIN board is replaced, it might
be necessary to note the combination with the com-
plete AMP board.
Refer to service manual supplement-1 for detail.
Note 4:
The AMP board of US, Canadian, Chinese, Taiwan
and Thai models has been changed in the midway of
production.
Distinguish by referring the “TYPE-11/TYPE-12
DISCRIMINATION OF AMP, LED AND VOL
BOARDS” on page 5 about the type of AMP board.
Moreover, when the complete MAIN board is re-
placed, it might be necessary to note the combination
with the complete AMP board.
Refer to service manual supplement-1 at the same
time.
Note 1: When the complete MAIN board is replaced, refer to
“WRITING OPERATION OF SERIAL NUMBER
AFTER REPLACING THE MAIN BOARD” on
page 6.
Ver. 1.2
Note 3: When the complete AMP board of Korean model is
replaced, refer to “DISPOSAL OF SPEAKER TER-
MINAL BOARD CAP” on page 5.
Note 2: The MAIN board has been changed in the midway of
production.
When the complete MAIN board is replaced, it might
be necessary to note the combination with the com-
plete AMP board.
Refer to service manual supplement-1 for detail.
Note 4: The AMP board of US, Canadian, Chinese, Taiwan
and Thai models has been changed in the midway of
production.
Distinguish by referring the “TYPE-11/TYPE-12
DISCRIMINATION OF AMP, LED AND VOL
BOARDS” on page 5 about the type of AMP board.
Moreover, when the complete MAIN board is re-
placed, it might be necessary to note the combination
with the complete AMP board.
Refer to service manual supplement-1 at the same
time.
Note 3: When the complete AMP board of Korean model is
replaced, refer to “DISPOSAL OF SPEAKER TER-
MINAL BOARD CAP” on page 5.
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.
Note: Les composants identi fi és par une marque
0
sont critiques pour la sécurité.
Ne les remplacer que par une piéce portant
le numéro spéci
fi é.