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KX-TG5521RUB/KX-TGA551RUB
13.4. Schematic Diagram (Handset)
Charge Current
F1
5.6n
BATT+
C150
BATTERY
BATT-
R45
C35
J56p
0.1
GND
CHG(+)
R30
C5
CHARGE
K1u
1.5k
Terminal
GND
CHG(-)
GND
GND
+1.8V
BAT
2
3
UTX
URX
1
4
GND
RA61
220
GND
R63
JTAG
100
COL0
COL1
COL2
COL3
COL4
COL5
BATTERY
BELL LED
(Amber)
C138
LED12
GND
GND
NC: No Components
BATTERY
C1
CP1
C3
6.3V
330u
GND
GND
R7
1.2k
Q4
D7
R31
100
R3
Q9
1k
GND
Power_adj
UTX
URX
JTAG
PON
PSEL
VDD_PADRV
TXp
TXn
TXON
RF_RXp
RF_RXn
RXON
TO RF BLOCK
CP+4.0V
C139
LED8
RA31
RA30
560
270
Q7
GND
+1.8V
C44
K0.1u
61
R225
62
LCD_CSB
0
63
64
STM
65
LCD_RESET
66
67
BELL_LED_A
68
69
C45
70
K0.1u
C46
71
10p
72
73
74
75
TX _RF
76
77
78
79
80
BATTERY
To PA
81
GND
GND
RX _RF
GND
250mVp-p
0.75V
0V
C140
10p
LED2
GND
C141
10p
RA32
GND
68
70
C341
C340
C342
J39p
GND
GND
GND
BATTERY
R330
Q11
1M
Q12
C331
1u
R331
GND
C332
27k
R332
1u
27k
GND
GND
GND
CKM
R20
10
3.0V
CP+3.0V
GND
C53 K10u
C52 K10u
C54 D10p
GND
RSTn
JTAG
P2_5/PCM_FSC/SF
P2_4/SCL1/PCM_DO/DP3
P2_3/SDA1/PCM_DI/DP2
P2_2/PCM_CLK/CLK100
PAOUTn/P3_0
P2_1/ECZ2/PWM1/LED4
P2_0/ECZ1/PWM0/LED3
PAOUTp/P3_1
VDD2
P1_7/CHARGE
*IC1
LDORF_CTRL
CHARGE_CTRL
RF_SUPPLY2
GND
RFP0n
RFP4
RFP3
ADC1/INT0/P1_0
VDD_PADR
VSS_PADR1
PARADET/P3_4
RF_TXp
RINGOUT/RINGING/P3_5
RF_TXn
VSS_PADR2
RFP2
CIDINp/VREFp
X1
3
1
2
10.368M
R215
C13
0
GND
K0.1u
+1.8V
1.8V
1.8V
Q2
D1
C2
CP2
6.3V
330u
GND
GND
4.0V
CP+4.0V
CP3.0V
CP4.0V
(1)
(2)
POWER
(3)
C51
C38
K1u
(
)
C55
S1
D10p
GND
1
2
GND
40
VBAT2
39
CP_C1y
38
CP_C2x
37
CP_C1x
36
VBAT1
(4)
35
34
(5)
VDDPA
33
(6)
CHARGE
32
CHARGE_CTRL
31
L46
SOCn
30
SOCn
SOCp
L47
29
SOCp
28
NTC/ADC2
27
COL0
26
ADC0/P3_3
COL1
25
COL2
24
COL3
23
GND
RINGn/P3_6
COL4
22
RINGp/P3_7
21
R23
1k
C12
K10u
C17
D10p
VREFm
C18 D10p
RA4
3.3k
VREFm
(7)
(8)
C11
K0.1u
(9)
(10)
R27 820
R28 820
(11)
RF-SHIELD
GND
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Troubleshooting
