Read Sony CDX-GT340 / CDX-GT34W Service Manual online
CDX-GT34W/GT340
CDX-GT34W/GT340
16
16
4-2. BLOCK DIAGRAM – DISPLAY Section –
For Schematic Diagrams.
Note:
• All capacitors are in
• All capacitors are in
μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω and 1/4 W or less unless otherwise
specifi ed.
• f : Internal component.
• C : Panel designation.
• 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.)
(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
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM
< > : CD PLAY
• Voltages are taken with VOM (Input impedance 10 M
( ) : AM
< > : CD PLAY
• Voltages are taken with 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
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
J
: CD PLAY
F :
FM
f :
AM
L :
AUX
g : BUS AUDIO
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• a :
• X : Parts extracted from the component side.
• a :
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
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.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
• Waveforms
– MAIN Board –
X502
32.768kHz
10
11
94
1
2
2
100
95
SYSTEM CONTROL
IC501 (2/2)
LCD DRIVE
IC901
KEYIN1
CLK
CE
CE
LCD_SO
LCD_CKO
LCD_CE
DIMMER
KEYIN0
92 KEYACK1
82 RE-IN0
RE-0
RE-1
RE-1
81 RE-IN1
XOUT
XIN
X501
11.06MHz
15
13 OSCOUT
3 NOSE_SW
OSCIN
63
64
62
2
COM1
I
COM4
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
60
55
50
I
5
54
|
51
S1
I
S48
DATA
DIMMER
SWITCH
Q931
LED931
PANEL+B
(
)
KEY MATRIX
LSW902–908,
S901–907
(VOLUME)
PUSH SELECT
S909
ROTARY
ENCODER
BACK LIGHT
1
LCD
BACK LIGHT
SWITCH
Q932
LCD BACK
LIGHT
(
)
LED940,944–952,
955,956,960,961,
LSW902–908
KEY
ILLUMINATE
4 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC902
40 mVp-p
4 MHz
1.7 Vp-p
32.768 kHz
20 mV/DIV, 100 nsec/DIV
0.5 V/DIV, 10
Psec/DIV
1
IC1
qh (XTAL1)
2
IC501
qa (XOUT)
3.4 Vp-p
11.06 MHz
1 V/DIV, 50 nsec/DIV
3
IC501
qd (OSCOUT)
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