Read Sony CDX-GT26 Service Manual online
CDX-GT26
CDX-GT26
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.
• 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.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
• A : B+ Line.
• Voltages and waveforms are dc with respect to ground
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
(
)
:
MW/LW/SW
<
> : CD PLAY
*
: Impossible to measure
• 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
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J :
J :
CD
F :
FM
f :
MW/LW/SW
L :
AUX
• Abbreviation
AR :
AR :
Argentina
model
• Abbreviation
AR :
AR :
Argentina
model
For Printed Wiring Boards:
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• a
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor 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)
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.
• Waveforms
– MAIN Board –
X502
32.768kHz
10
11
94
1
2
2
100
95
SYSTEM CONTROL
IC401 (2/2)
LCD DRIVE
IC903
KEYIN1
CL
CE
CE
LCD_SO
LCD_CLK
LCD_CE
KEYIN0
92 KEYACK1
82 RE_N0
RE0
RE1
RE1
81 RE_IN1
18
97
97
91
XOUT
XIN
X501
7.92MHz
15
13 OSCOUT
3 NOSE_SW
OSCIN
47
48
46
DIMMER 2
COM1
I
COM4
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
3
|
34
39
35
|
38
S1
I
S33
DI
PANEL+B
KEY MATRIX
LSW901–908
LSW901–908
S901–908
(VOLUME)
PUSH SELECT
S905
ROTARY
ENCODER
4 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC902
BACK-LIGHT 1
BACK LIGHT
LED DRIVE
Q932
DIMMER
SWITCH
Q931
LED901,903,905,907,
909,911,913,915,917,
919,921,923,925,927,
909,911,913,915,917,
919,921,923,925,927,
LSW901–908
LED931
(LCD BACK LIGHT)
3
OUT
RC_IN1
RC_IN0
RC_IN0
KEYACK0
J801
(REMOTE IN)
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
1.2 Vp-p
32.768 kHz
3.5 Vp-p
7.92 MHz
1 V/DIV, 20 ȝsec/DIV
2 V/DIV, 50 nsec/DIV
1
IC401
qa (XOUT)
2
IC401
qd (OSCOUT)
0.06 Vp-p
4 MHz
0.05 V/DIV, 50 nsec/DIV
3
IC001
qh (XTAL1)
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