Sony HCD-GT111, Service Manual, Page: 27 / 118

HCD-GT111/GT222/GT444/GT555
HCD-GT111/GT222/GT444/GT555
27 27
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.
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 (detuned) conditions.
– CD Board –
no mark : CD PLAY
– TC Board –
no mark : TAPE PLAY
( ) : TAPE REC
– Other Boards –
no mark : TUNER (FM/AM)
( ) : CD PLAY
‹‹ ›› : TAPE PLAY
{ } : TAPE REC
• Voltages are taken with a 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
: TUNER (AM/FM)
J
: CD PLAY
E
: USB
d
: TAPE PLAY
G : TAPE REC
f
: AUDIO IN
N
: MIC
• Abbreviation
AR :
Argentina model
E2 : 120V AC area in E model
E3 : 240V AC area in E model
E51 : Chilean and Peruvian models
MX : Mexican model
RU : Russian 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.)
• Circuit Boards Location
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.
DISPLAY board
TC board
DISPLAY board
5V REG board
USB board
SW JACK board
(GT444/GT555)
MAIN board
POWERAMP board
9V REG board
TRANS1 board (GT111: E2, E3, E51)/
TRANS2 board (GT222/GT444/GT555)/
TRANSX board (GT111: AEP, RU, AR)
LED board (GT222/GT444/GT555)/
LED (GSL1) board (GT111)
SW board
(GT222/GT444/GT555)
MOTOR DRIVE board (GT222/GT444/GT555)
VOLUME board
CD board
USB CONNECTOR board
MIC board
• Indication of transistor.
C
B
These are omitted.
E
Q
C E B
These are omitted.