Table of Contents
Advertisement
SCHEMATIC DIAGRAM-4 (HANDSET FRONT/ZENER SECTION)
Q Q
3 7 6 3 1 5 1 5 0
HANDSET FRONT C. B
1
2
VDD
SW1
SW2
R29
22K
11
COL0
4
5
VDD
SW4
SW5
R32
22K
10
COL1
7
8
VDD
SW7
SW8
R33
22K
9
COL2
0
TONE
VDD
SW10
SW11
R34
22K
8
COL3
Redial
Channel
/Pause
SW13
SW14
T E
L
1 3 9 4 2 2 9 6 5 1 3
D1
1N4148
VDD
R2
100K
ROWO
5
ZENER DIODE C. B
w w w
3
Talk
Off
SW16
SW21
SW3
6
SW17
SW22
SW6
R5
680
9
SW9
SW18
SW23
Memo/
Store
SW12
SW19
Flash
Mute
SW15
SW20
D2
D3
D4
1N4148
1N4148
1N4148
C18
470p
C15
470p
VDD
C16
VDD
470p
C17
470p
R4
R3
100K
100K
ROW1
6
ROW2
7
VDD
C901
0.1
1
14
1
2
13
2
12
3
4
11
4
5
10
5
9
6
BEEP
23
8
7
x
a o
y
.
i
http://www.xiaoyu163.com
Q1, 2, 4
MCU RESET
VCC
R13
VDD
33
L1
LED2
100uH
LED(SMT)
C2
RED
10/16
TALK
C5
+
TALK_LED
C4
10/16
0.1
RED
C19
0.1
C99
0.1
R31
1.8M
C6
30p
1
XOUT
VDD
28
X1
4MHz
2
XIN
RESET
27
C7
BAND
30p
3
TEST
P10(INT0)
26
CHG_DET
4
P67
P11(INT1)
25
ROW0
RX_DATA
ROW0
5
5
P66
P12(INT2/TC1)
24
Q
Q
3
7
6
ROW1
BEEP
ROW1
6
6
P65(STOP5)
P13(DV0)
23
ROW2
OSC_PWR
ROW2
7
7
P64(STOP4)
P14(PPC)
22
COL3
TX_DATA
8
COL3
8
P63(STOP3)
P15(TC2)
21
COL2
2
RSSI
9
COL2
9
P62(STOP2)
P16
20
COL1
1
PLL_CLK
10
COL1
10
P61
P17
19
5
COL0
PLL_DATA
11
COL0
11
P60
P72
18
4
PLL_STB
REC_VOL
12
P77
12
P73
17
REC_VOL
RING_VOL
P76(STOP/INT5)
13
P74
16
14
VSS(VASS)
P75
15
U1
VCC
TMP87C405M-1K46
VCC
R11
22K
R12
2.2k
R7
BAT_ALM
330
Q8
MMBT3906
RING-VOL
+
C3
47/16
D9
P5
BUZ(+)
1N4148
P6
BUZ(-)
RX_PWR
TO BUZZER
R10
2.2k
Q6
C13
MMBT3904
33p
RING-AMP
u 1 6 3
-11-
http://www.xiaoyu163.com
8
9
2
4
9
VCC
Q1
KTC9014C
R18
R19
1.8M
2.2M
D14
Q3
1SS184
KTC9014C
R20
390K
JP2
C
D5
1N4148
R14
D6
100K
1N4148
C11
VCC
0.1
MMBT3904
BATT1.
Q4
BATT.PACK
(Ni-Cd)
3.6V
ZD1
+
1N5231B
R21
C8
5.1V
68K
0.1
C9
C10
0.01
10/16
R16
C12
100K
0.1
VDD
R26
10K
D7
1N4148
BAND
26
VCC
3
1
5
1
R24
5
0
8
9
R25
10K
2.2K
24
RX_DATA
23
BEEP
VCC
R8
R9
4.7K
56K
Q2
MMBT3906
OSC-PWR
CONTROL
OSC_PWR
22
VCC
TX_DATA
21
R22
47K
R6
RSSI_SIG
10K
LED1
20
BATT.LOW
LED,WS3216RSC(RED)
K
A
R23
390
19
PLL_CK
VCC
+
18
PLL_DATA
C14
33/10
R17
17
PLL_STB
100K
16
BAT_ALM
VCC
R27
56K
R28
4.7K
Q5
MMBT3906
RX-PWR
CONTROL
RX_PWR
15
m
C1
0.1
c o
.
8
2
9
9
D8
1SS181
CHARGE (+)
P1
A
CHARGE (-)
P2
VCC
J2
1
2
RX_PWR
15
3
RX_DATA
24
2
4
9
8
2
9
9
4
BAT_ALM
16
5
BAND
26
6
REC_VOL
12
7
8
PLL_STB
17
9
PLL_DATA
18
VCC
10
PLL_CK
19
11
RSSI_SIG
20
12
TY_DATA
21
17,18,19
13
OSC_PWR
22
12,23
Advertisement
Table of Contents
