Sony HCD-GTR333, Руководство по обслуживанию

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HCD-GTR333/GTR555/GTR777/GTR888
3
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
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.
•
5
: Fusible resistor.
•
C
: Panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
- TC Board -
no mark : TAPE PLAY
( ) : TAPE REC
- Other Boards -
no mark : TUNER (FM/AM)
( ) : CD PLAY
<< >> : TAPE PLAY
[ ] : TAPE REC
< > : USB
{ } : PC
*
: 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
f
: TUNER (FM/AM)
G
: REC
N
: MIC
J
: CD PLAY
c
: DIGITAL
E
: USB
• Abbreviation
AR :
Argentina model
E2 : 120V AC area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
For Printed Wiring 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
C E 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.
• DMB19 board is multi-layer printed board.
However, the patterns of intermediate layers have not
been included in diagrams.
• Abbreviation
AR :
Argentina model
E2 : 120V AC area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
SECTION 2
DIAGRAMS