CDX-GT330, CDX-GT33W - Sony Car Audio Service Manual (repair manual). Page 16

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CDX-GT33W/GT330
CDX-GT33W/GT330
16
16
• 
A : B+ Line.
• 
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
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.
 
J : 
CD 
PLAY 
 
F : 
FM
 
f : 
AM 
 
L  : BUS AUDIO
 
g : AUX
For schematic diagrams:
Note:
•  All capacitors are in 
μF 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 
specifi ed.
•      
f : 
internal 
component.
• 
C :  panel  designation.
4-2.  BLOCK  DIAGRAM – DISPLAY  SECTION –
For Printed Wiring Boards.
Note:
• 
X : Parts extracted from the component side.
•      
a : 
Through 
hole.
• 
 : 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.
• Waveforms
– MAIN Board –
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
X502
32.768kHz
10
11
94
1
2
100
95
SYSTEM CONTROL
IC501 (2/2)
LCD DRIVE
IC901
KEYIN1
CL
CE
LCD_SO
LCD_CKO
LCD_CE
DIMMER
KEYIN0
92 KEYACK1
82 RE-IN0
RE-0
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
|
5
54
|
51
S1
I
S48
DI
DIMMER
SWITCH
Q931
LED931
PANEL+B
(
)
KEY MATRIX
LSW901–914,
S901
(VOLUME)
PUSH SELECT
RE901
ROTARY
ENCODER
BACK LIGHT
1
LCD
BACK LIGHT
SWITCH
Q932
LCD BACK
 LIGHT
(
)
LED941,944,951–953,
LSW901–914
KEY
 ILLUMINATE
4 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
 IC971
Note: 
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.
Note: 
Les composants identifi és 
par une marque 
0 sont 
critiques pour la sécurité. 
Ne les remplacer que par 
une piéce portant le nu-
méro spécifi é.
•  Indication of transistor.
 
C
B
These are omitted. 
E
Q
 
 
0.04 Vp-p
4MHz
0.8 Vp-p
32.768 kHz
0.05 V/DIV, 0.5 
μ sec/DIV
0.5 V/DIV, 20 
μsec/DIV
  IC1 
RI (XTAL 1)
  IC501 
 (XIN)
1.7 Vp-p
11.06MHz
0.5 V/DIV, 0.1 
μsec/DIV
  IC501 
RH (OSCIN)
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