SCHEMATIC DIAGRAM NX-800
93
4.98V
5.01V
5.01V
13.52V
5.01V
3.12V
SPO
3oUTY4
LEVEL SHIFT
(AND ITXD1/SCTXD)
VCC
5
GND
1INA
INB
2
0.01u
IC512
TC7SET08FU-F
0.01u
C817
1000p
10k
R634
1SS416
R633
PREVENTION
(RXD)
CURRENT
REVERSE
100p
C825
R632
D504
GND
(DM)
1
4
RXD
2
3
TXD
GND
C588 1000p
C589
R523 47k
470k
R506
SHIFT/MODEL
7
NC
5C
5
6
C587 1000p
DC SW
Q501
UPA672T-A
0.01u
(LCDDI)
(LCDDO)
10
GND
8
9
(LCDCLK)
RST2 (LCDCE)
AFO
13
11
12
19
100p
C585
C586
100p
C584
ME
15
14
PSW
18
MIC
GND
16
17 GND
1k
R630
1000p
1000p
C583
C581
1000p
C582 SB
21
NC
20
SB
24
8C
23
22
GND
100p
C580
SPO
SPO
28
SPO
SPO
26
25
27
SPO
30
29
CN597
50C
MI1
ME
33M
C590
80C
SB
SPO
/PSW
AFO
/PRST
RXD1
SCRXD
10k
0
SCTXD
TXD1
SHIFT
D903D902
AVRM16080MAAB
C905 0.1u
C906 2200p
C907 1000p
AVRM16080MAAB
AVRM16080MAAB
02DZ18F-X,Y
SURGE
ABSORPTION
(HK/RXD) PROTECTION
OVER DC
SUPPLY
v
(DM/KVL)
SURGE
ABSORPTION
v
D902
D901
D901
8 BLC/AFO
ABSORPTION
SURGE
(BLC/AFO)
v
D904
D903
D904 1k
R902
D906
MINISMDC020F
C908 1000p
C909 1000p
C903 0.01u
C965 0.1u
HK/RXDHK/RXD
5 PTT/TXD
7SB
6E
2
4
3
ME
MIC
PTT/TXDO
1 DM/KVL
J901
100p 100p
C911 100p
DM/KVL
PROTECTION
(SB)
v
C910 C912
RXD
GND
GND
29
30
LINE
1u
L902
1u
L901
TXD
28
27
NC
5C
25
26
/PRST
02DZ18F-X,Y
24
OVER DC
PROTECTION
SUPPLY
D907
21
GND
GND
GND 22
23
/PRST
GND 20
19
5C
1000p
C914
D907
RXD
TXD
MIC
ME
GND
AFO 0
R901
18
17
16
13
GND
GND
15
14
NC
/PSW
11
12
HSC119
D912
HSC119
D911
D908
HSC119
1
SPO
SB
SB 10
9
PSW
GND
8C 8
7POWER
8C
KO1
KO2
4
SPO
SPO
6
5
SPO
SPO
SPO 3
2
KI1
KI2
KI0
KO0
KI3
KEY MATRIX
1000p
C924
1k
R920
R904
100
CN901
CH DOWN
D908,911,912
100
R921
100
"PF1""PF2"
2
SP 1
CH UP
CN902
1000p
C923
R923
R922
1k
VOL DOWN"PF3"
1000p
C925
1000p
C922
1k
VOL UP"PF4"
R925
1k
R924
TX-RX UNIT (X57-7390-10)
DISPLAY UNIT (X54-3640-10)
9
9
9
15