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Block Diagram -display Section - Sony CDX-HR70MS Service Manual

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CDX-HR70MS/HR70MW/HS70MS/HS70MW
5-2. BLOCK DIAGRAM — DISPLAY SECTION —
SYSTEM CONTROL
IC501 (2/2)
RC1
71 RC_IN1
J370
(
REMOTE
)
RC0
IN
43 RC_IN0
LCD_CE/FLS_SI
LCD_SO/FLS_SO
LCD_SCK
BU+3.3V
KEY ACK
S501
10K
(
FREQUENCY
)
3 AREASEL2
SELECT
9K
XKEYON
HS70MS/HS70MW
79
XOUT
X501
32.768kHz
XIN
80
82
OSCIN
X500
18.432MHz
OSCOUT
83
DOOR_IND
D599
PANEL
OPEN
70 DOOR_SW
DETECT
Q591
S802
PANEL OPEN
(
)
DETECT
DOOR_SW
MAIN
A
SECTION
(Page 17)
CDX-HR70MS/HR70MW/HS70MS/HS70MW
DISP+B(+9V)
LCD-CE
27
LCD-DATA
28
LCD-CLK
29
KEY-IN1
KEYIN1
40
KEY-IN0
KEYIN0
41
D501
FRONT
PANEL
UNIT
KEY ACKNOWLEDGE
SWITCH
52
Q501
76
+
RE-0
RE-IN1
48
RE-1
RE-IN0
47
SIRCS
SIRCS
64
LSW801 (1/2)
Z
LED801
(DISC-SLOT)
LED DRIVE
46
LSW801 (2/2)
Q589,590
Z
(
)
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
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 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
/
W or less unless otherwise
4
specified.
f
: internal component.
• C : panel designation.
Note:
Note:
Les composants identifiés par
The components identi-
fied by mark 0 or dotted
une marque 0 sont critiques
line with mark 0 are criti-
pour la sécurité.
Ne les remplacer que par une
cal for safety.
Replace only with part
piéce por tant le numéro
number specified.
spécifié.
• 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 : TUNER
<
> : CD PLAY
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
: TUNER
L : AUX
g : BUS AUDIO
• Waveforms
— MAIN Board —
1
IC50 0 (XTO)
2.5Vp-p
8.664MHz
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.
: Through hole.
a
: 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.
C
Q
These are omitted
B
E
B
E
C
These are omitted
E
C
B
These are omitted
2
3
IC501 ul (XOUT)
IC501 id (OSCOUT)
1Vp-p
32.768kHz
18.432MHz
0.5 V/DIV, 10 µ sec/DIV
1 V/DIV, 20 nsec/DIV
3.1Vp-p

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