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21
CDX-RA650/RA700/RA750
CDX-RA650/RA700/RA750
3-3. BLOCK DIAGRAM — DISPLAY SECTION —
KEY ACKNOWLEDGE
SWITCH
Q664
X502
32.678kHz
SYSTEM CONTROL
IC501 (3/3)
FL900
FLUORESCENT
INDICATOR TUBE
GCP
SI1
X501
18.432MHz
X901
5MHz
S103
RESET
10
6
5
SI2
4
SI3
3
D501
D353
S961
OPEN
/CLOSE
CLK
11 LAT
12 BK
16 VDD2
1 F+
BU+3.3V
SYS RST
KEY MATRIX
S651
(OPEN/CLOSE)
RESET
IC602
IR
REMOTE CONTROL
SIGNAL RECEIVER
IC972
LSW901–915,918–921,
S915–918
13 VDD1
FL+3.3V
ILL+B
BATT
BU IN
FL+3.3V
OPEN/CLOSE
MOTOR DRIVE
IC651
M904
(OPEN/CLOSE)
RESET
S501
FREQUENCY
SELECT
(
)
BU+3.3V
J370
(REMOTE IN)
RA750
LED961
PANEL+B
10K
9K
POWER
SWITCH
Q613,614
FL+3.3V
+4.8V REG
Q621
BATTERY
CHECK
Q5
FL POWER
DETECT
Q230
F–
D623,624
17
F–
18
ILL+B
BATT
100
FL DRIVE
IC901
DC–DC CONVERTER
IC620
GCP SELECT
IC902
FREQUENCY
CONTROL
SWITCH
Q620
NOSE SWITCH
CONTROL
Q2,8
LED DRIVE
Q903,904
SYNCHRO SWITCH
CONTROL
Q4,10
2 F+
ILL+B REG
Q7,9
BU+5V
PANEL+B
PANEL+B
BATTERY
CHECK
Q609,610
BATTERY
CHECK
Q611,612
D653–656
D626,630
FL POWER
CHECK
Q606,607
LSW901–915,
918–921
PANEL+B
RA750
RA650/RA700
BU+5V
DISPLAY
POWER
CONTROL
Q13,14
RA750
Содержание CDX-RA650
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