Block Diagram -Display Section - Sony CDX-M30 Service Manual

CDX-M30
5-2. BLOCK DIAGRAM — DISPLAY SECTION —
SYSTEM CONTROL
RC1
71 RC_IN1
J370
( )
REMOTE
RC0
IN 43 RC_IN0
D501
KEYIN1
40
KEY MATRIX
S901–915
41 KEYIN0
S201
Z
KEY ACK
ENABLE 52 KEY ACK
Q501
RE901
76 AD_ON
VOLUME
CONTROL
DIAL/
SELECT
BUTTON
+
ROTARY
RE-0
48 RE_IN1
ENCODER
RE-1
47 RE_IN0
XOUT
79
X501
32.768kHz
80 XIN
OSCIN
82
X500
18.432MHz
83 OSCOUT
CN901 CN201
14 14
70 DOOR_SW
DOOR_SW
MAIN
A
SECTION
(Page 17)
+3.3V
FM(200k)
AM(10k)
S501
( ) 3 AREASEL2
FREQUENCY
SELECT
FM(50k)
AM(9k)
S102
(FRONT PANEL DETECT)
7 NOSE_SW
CDX-M30
LCD DRIVER/LED CONTROL
IC501 (2/2) IC901
3
S1
LCD_SO 28 LCD901
78 DI
|
I
LCD_CKO
29 77 CL 64
S62 LIQUID
LCD_CE 27 76 CE CRYSTAL
DISPLAY
COM1 65
PANEL
I |
COM4 68
LCD BACK LIGHT
DIMMER CONTROL
DIMMER 80
Q901
1 2
DISP+B
LED902–916,
943,947,
948,950
( KEY/VOLUME )
ILLUMINATION
GREEN LED
CONTROL
Q919
RED LED
CONTROL
Q920
LED201
LED DRIVER (DISC IN)
DOOR_IND 46
Q589,590 LED202
Z
REMOTE CONTROL
SIGNAL RECEIVER
IC971
SIRCS 64 3 OUT
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 diagram:
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
1
• All resistors are in Ω and / W or less unless otherwise
4
specified.
• f : internal component.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
LED930,931
( LCD BACK ) with mark 0 are critical for safety.
LIGHT
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : AM
< > : CD
• Voltages are taken with a VOM (Input impedance 10 MΩ).
D946,949, Voltage variations may be noted due to normal production
951–966,993
tolerances.
KEY
( )
• Waveforms are taken with a oscilloscope.
ILLUMINATION
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J : CD
F : FM
f
: AM
g : AUDIO
L : AUX
• Waveforms
— MAIN Board —
1
IC501 ul (XOUT)
1.6 Vp-p
32.768 kHz
1 V/DIV, 50 nsec/DIV
18 18
for printed wiring boards:
Note:
• 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: Parts on the pattern face side seen from the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
2
IC501 id (OSCOUT)
2.5 Vp-p
18.432 MHz
1 V/DIV, 50 nsec/DIV