Panasonic KX-TG8231B, Service Manual

Page: 72 / 97

72
KX-TG8231B/KX-TG8232B/KX-TGA820B
12.4. Schematic Diagram (Handset)
J1
J2
5.6n
F1
4
330u
C1
47u
L1
6.3
330u
C2
100m
R45
100m
R1
68
R2
BATTERY
+4.2V VDD3
+2.5V
+1.8V
VDD2
VDD1
L4
NC
10k
R6
220k
R7
+2.5V +1.8V
UTX
URX
GND
+2.5V
+4.2V
POWER
TP20
TP21
BAT
47
R71
1u
C29
+4.2V
BATTERY
+1.8V
C9
NC
LED1
LED-
J3
J4
VDD4
470
R5
100
R13
10k
R65
3.3k
R15
D8
2
1
1u
C15
C4
NC
+2.5V
100 R103
R96
N
C
100 R104
C28
NC
100
R105
R97
NC
100
R106
R98
NC
R99
NC
100 R107
L7
59
LDO1_CTRL
61
P16/PON/INT6
63
LDO1_sense
65
A
VD2
67
LSRp/REF
69
VREFm
71
A
GND
73
VREFp
4
VSS1
75
P14/*INT4
6
LED2/PWM1/P21
77
P22/CLK100
8
LED_BIAS/P36/PD6
79
ADC3
10
SCL1/P24
12
*INT2/P12
14
AVS
16
Xtal1
18
RFCLKp
20
VDDRF
22
TDO
24
SK
26
LE
28
P32/PD2
30
P
A
OUTm
32
P
A
OUTp
34
P33/PD3
36
TDOD/P35/PD5
38
VDDIO2
40
PCM_FSC/*INT0/P10
42
P01/URX
44
P03/SDA2
46
P05/SPICLK/PCM_CLK
48
P07/SPIDI/PCM_DIN
50
VDD3
52
P17/CHARGE/INT7
54
DC_STAB
56
DC_CTRL
58
VBAT1
60
LDO2_CTRL
62
P26/ST
OP_CHARGE
64
A
VS2
66
*LSR/REF
68
*MIC
70
VB
UF
72
MICp
1
*INT1/P11
3
VDD1
74
P30
5
LED1/PWM0/P20
76
P13/*INT3
7
LED3
78
A
VS_sense
9
SDA1/P25
80
ADC0
11
*INT5/VDDE/P15
13
AVD
15
CAP
17
VSSRF
19
RSSI/RFCLKm
21
RFCLKd
2
VDDIO1
23
RDI
25
PD1/SIO
27
P31/PD1
29
VSSP
A1
31
VDDP
A
33
VSSP
A2
35
P34/PD4
37
VSS2
39
VDD2
41
P00/UTX
43
P02/JTIO
45
P04/SCL2
47
P06/SPIDO/PCM_DOUT
49
VSS3
51
P23/ADC1
53
*RST
55
DC_I
57
DC_Sense
R152
NC
0
R153
+3.3V
+3.3V
0
R167 R168
NC
SW1
1
2
3 6
5
4
7
8
INT
12
R
12
SHARP
1
2
0
12
AST
12
9
1
2
8
1
2
7
1
2
6
1
2
5
1
2
4
1
2
3
1
2
2
1
2
1
1
2
CANCEL
12
SP
12
S1
1 2
TALK 12
SOFT_C
12
SOFT_A
12
CN3
1
CN3
2
CN3
3
CN3
4
CN3
5
CN3
11
CN3
10
CN3
9
CN3
8
CN3
7
CN3
6
CN3
12
CN3
13
5.6k
R46
5.6k
R47
0
R175
0
R176
R95
NC
1k
R66
C5
NC 2.2u C10
JTAG
CL1
CL2
R19
NC
39k
R11
1k
R62
0 R182
1k
R61
10k
R64
C161
NC
K0.1u
C26
10k R183
C3
K0.1u
C6
8p
C8
220n
1n
C18
C97
NC
C20
K0.1u C21 K0.1u
C24 K0.1u
C25
K0.1u
C30
K0.1u
C84
K0.1u
C119 K0.1u
C121 K0.1u
100p
C35
100p C103 100p C104
100p C105
C106
NC
100p
C107
C38
K0.01u
C27 K1u
C34 K1u
C120
K0.01u
100
R63
470
RA3
1 23
4
470
RA4
1 23
4
470
RA5
1 23
4
470
RA6
1 23
4
C7
12p
X1
1
3
2
Q3
B
E C
Q2
B
E C
4.7
R12
L24
NC
0 R196
Q12
Q5
Q9
Q7
Q4
D7
D1
LED4
LED9 LED5 LED7 LED6 LED8
LED10 LED11
Q1
C39 2.2u
100p C23
C96
NC
100p C173
100p C174
100p C176
Q23
100p C175
+2.5V
+2.5V
100k
R201
+2.5V
47k
R199
47k R200
K0.1u
C168
1n
C36
C19 1u
C22
1u
DC_I A
V
S_sense
ADC3
URX
JTAG
RO
W
0
COL5 COL4 COL3 COL2 COL1 LE SIO SK RDI TD0
ADC3
A
V
S_sense
ROW2
ROW1
KEY_LED
RO
W
1
RO
W
3
CHARGE
RO
W
2
RESET
RFCLK
LDO1_CTRL LDO2_CTRL
URX
DC_CTRL
LCD_BA
CK
ST
OP_CHARGE
COL0
KEY_LED MIDI_IRQ
UTX
JTAG
LCD_BACK
LCD_CD
LCD_CSB
COL0
COL5
COL4
COL3
COL2
RO
W
0
COL1
LCD_CSB
LCD_SCL
LCD_CD
LCD_RESET
ST
OP_CHARGE
HEADSET_DET
UTX
LCD_RESET
LCD_SCL
LCD_SDA
MIDI_SDA
RO
W
3
MIDI_SCL
MIDI_CS
LCD_SD
A
R168 : NC
except RU/UA
R167 : NC
R168 : 0
R167 : 0
for RU/UA
Push
R
L
up
down
IC1
BBIC
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(16)
(10)
(11)
(12)
(13)
(14)
(15)
NC: No Components
1s
(When on charge)
Charge Current
TX DATA
RX DATA
384kHz
(Talk Mode)
3.3V
Backlight On 4.0V
Backlight Off 3.5V
2.5V
1.8V
0.65V
0V
300mVp-p