Sony HCD-GTR88, Руководство по обслуживанию, Страница: 21 / 77

HCD-GTR88
HCD-GTR88
21
21
•
Circuit Boards Location
For Schematic Diagrams.
Note: •
All capacitors are in
—
F unless otherwise noted. (p: pF) 50
WV
or
less
are
not
indicated
except
for
electrolytics
and
tantalums.
•
All
resistors
are
in
Ÿ
and
1/4
W
or
less
unless
otherwise
speci
fi ed.
•
f
: Internal component.
•
2
: Non
fl ammable
resistor
.
•
5
: Fusible resistor
.
•
C
: Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMA
TIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•
A
: B+ Line.
•
B
: B– Line.
•
V
oltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
-
TC Board -
no mark
:
T
APE PLA
Y
( )
:
T
APE REC
- Other Boards - no mark
:
TUNER (FM/AM)
( )
:
CD PLA
Y
<< >>
:
T
APE PLA
Y
[ ]
:
T
APE REC
< >
:
USB
{ }
:
PC
*
:
Impossible to measure
•
V
oltages are taken with VOM (Input impedance 10 M
Ω
).
V
oltage variations may be noted due to normal production
tolerances.
•
W
aveforms are taken with a oscilloscope.
V
oltage variations may be noted due to normal production
tolerances.
•
Circled numbers refer to waveforms.
•
Signal path.
F
: AUDIO
f
: TUNER
(FM/AM)
E
: T
APE
PLA
Y
G
: T
APE
REC
N
: MIC
J
: CD PLA
Y
c
: DIGIT
AL
I
: USB
• Abbreviation AR
: Argentine
model
AUS
: Australian
model
E2
: 120V
AC area in E model
E4
: African
model
E51
: Chilean and Peruvian models
MX
: Mexican model
For Printed W
iring Boards.
Note: •
X
: Parts extracted from the component side.
•
Y
: Parts extracted from the conductor side.
•
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
Q
CE
B
These are omitted.
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.
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: (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.
• Abbreviation
AR
: Argentine
model
AUS
: Australian
model
E2
: 120V
AC area in E model
E4
: African
model
E51
: Chilean and Peruvian models
MX
: Mexican model
•
DMB19 board is multi-layer printed board. However
, the patterns of intermediate layers have not
been included in diagrams.
TRANS board
PT SHIELD board
POWER AMP
board
MAIN board
SUBWOOFER board
SUBTRANS board
DMB19 board
HUB board
LED (GVX) board included in METER DISPLA
Y
ASSY
VOL
board
USB board
MIC board
DISPLA
Y
board
TUNER (FM/AM)
SW (GVX) board included in METER DISPLA
Y
ASSY
MOT
OR DRIVE board
included in METER DISPLA
Y
ASSY
TC board (For African model only)