Panasonic KX-TG2521CAT / KX-TGA251RUT Service Manual ▷ View online
65
KX-TG2521CAT/KX-TGA251RUT
BATTERY
GND
GND
GND
CP+3.0V
CP+3.0V
K1u
C188
NC
C70
GND
D21
D22
NC
C71
GND
D10p
C113
D3
NC
NC
GND
D4
NC
NC
GND
GND
10p
C72
GND
10p
C73
GND
3.3n
C814
220
R806
GND
TXp
47
R805
GND
GND
VDD_PADRV
TXON
GND
GND
100n
C808
GND
PON
GND
BATTERY
GND
1
PSET
2
VCCS
3
PI
4
PIX
7
PSEL
8
POX
9
PO
10
VCC
11
GND
5
PRAMP
6
PAON
GND
TXn
PSEL
GND
GND
GND
GND
GND
RF_RXp
RXON
GND
GND
GND
RF_RXn
220
R807
NC
C837
GND
VSS
CN5
10
GND
CN5
1
RESETB
CN5
4
V0
CN5
11
VDD
CN5
8
SCLK
CN5
6
LCD_CSB
CN5
3
A0
CN5
5
OPT_PWR
CN5
2
VDDA
CN5
9
SID
CN5
7
GND
CN5
12
k1000p
C152
DA801
1
2
3
27n
L801
AP1
MIC
1
2
TP_ANT1
3p
C861
C820
NC
100p
*C103
3.3k
*R53
NC
*C106
10k
*R54
GND
100p
*C105
GND
GND
470
*R51
GND
GND
GND
GND
NC
*C187
NC
*C186
1k
R55
10k
*R50
NC
*C175
NC
*R578
GND
GND
GND
3.6n
L802
3.6n
L803
3.3p
C806
1.6p
C810
1.6p
C813
3.3p
C805
GND
NC
R808
VREFm
C74
D10p
C75
D10p
VREFm
82
R73
82
R74
D13
D14
10k
RA40
1
2
3
45
6
7
8
K0.1u
C172
RCV+
RCV-
MIC-
MIC+
1
*C200
1
*C201
1
*C203
820k
*R231
430k
*R232
0.1
*C204
NC
*R233
1k
RA800
1
2
3
4
4
NC
*R236
NC
*C206
CN51
13
CAP1+
CN51
14
VSS
CN51
15
/RES
CN51
7
V0
CN51
9
VOUT
CN51
4
SI
CN51
5
SCL
CN51
10
CAP2-
CN51
8
VR
CN51
3
/CS
CN51
11
CAP2+
CN51
1
GND
CN51
16
GND
CN51
12
CAP1-
CN51
2
RS
CN51
6
VDD
Q880
NC
GND
GND
GND
Power_adj
NC
C881
NC
R880
2p
C804
2p
C802
1.5p
C803
GND
GND
GND
GND
RECEIVER
1
+
2
-
SP-PHONE_SPEAKER
1
+
2
-
J33p
*C107
10p
C809
10p
C811
10p
C812
10p
C819
10p
C822
10p
C825
10p
C827
10p
C860
NC
C863
NC
C864
NC
C880
10p
*C104
NC
*C580
1k
*R52
Q10
NC
NC
R36
NC
C30
NC
R37
BATTERY
GND
680
*R801
100
*R802
1p
*C834
1
A0
2
A1
3
A2
4
GND
5
SDA
6
SCL
7
WP
8
VCC
4p
*C826
LCD_SDA
LCD_SCL
LCD_CD
LCD_RESET
LCD_CSB
LCD_SCL
LCD_CD
LCD_RESET
LCD_CSB
LSRp
LSRn
MICp
MICn
to LCD UNIT (Monochrome 1.8inc FullDot/for TGA651)
LSRp
LSRn
LSRp
Pre-matching
W 0.15mm
L 3.0mm x2
1st layer
L 3.0mm x2
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
L 20+/-2mm
3rd layer
W 0.15mm
L 20+/-1mm
3rd layer
L 20+/-1mm
3rd layer
Balun
BPF
W 0.15mm
L 5.0mm
1st layer
L 5.0mm
1st layer
W 0.15mm
L 5.0mm
1st layer
L 5.0mm
1st layer
W 0.15mm
L 20+/-2mm
3rd layer
L 20+/-2mm
3rd layer
W 0.125mm
L 7.6mm
Gap 0.125mm
1st layer
L 7.6mm
Gap 0.125mm
1st layer
to LCD UNIT (Monochrome 1.4inc 3Line/for TGA250)
R801:220k
R808:NC
R808:NC
*IC3
IC801
(1)
(2)
(3)
(2)
(3)
(4)
(6)
(5)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(7)
KX-TGA25
1 SCHEMATIC DIAGRAM (Handset_Main)
RX_RF
TX_RF
TX _AF
RX-AF (H
andset)
S
p-phone RX/Beep
66
KX-TG2521CAT/KX-TGA251RUT
Memo
67
KX-TG2521CAT/KX-TGA251RUT
14 Printed Circuit Board
14.1. Circuit Board (Base Unit_Main)
14.1.1. Component View
C32
C37
C88
C30
C25
C517
C518
C512
C70
C861
C511
C514
C515
C513
C516
C49
C48
C86
C36
C157
C520
C519
C521
C522
C827
C850
C803
C812
C811
C825
C822
C823
C806
C808
C805
C810
C810
C854
C860
C27
C17
C16
C15
C28
C42
C3
C8
C2
C43
C4
C622
C1
R802
R91
R92
R95
R804
R801
R808
R132
R133
R135
R657
R516
R126
R130
R129
R56
R803
R805
R28
R27
R27
R21
R22
R9
R10
R30
R124
R123
R511
R42
R14
L3
L801
L803
L1
IC801
SA1
D5
D6
D9
DA801
D22
D3
Q22
Q24
Q3
CN5-1
CN5-2
CN5-3
CN5-4
CN5-5
CN5-6
CN5-7
CN5-8
CN5-9
CN5-10
C156
C501
STM
C29
C163
C51
C834
C87
C802
C804
C819
C809
C859
C851
C853
C166
C10
C9
C12
C6
C5
C7
X1
ANT_1
F1
ANT_2
R15
R31
R17
R
16
R55
R43
R6
R109
R106
C306
C813
R5
R3
R8
R7
R4
R807
R93
R806
L802
L2
IC401
IC3
IC2
RA501
RA402
SW1
DA802
Q23
Q25
Q4
KX-TG2521 CIRCUIT BOARD (Base Unit_Main (Component View))
PNLB1732Z
E
E
E
E
5
F1 3.0A
8
1
4
1
1
KX-TG5511/
TG5521
KX-TG2511/TG2521/TG6511
TG6521/TG7511/TG7521
TG8511/TG8521
A
PbF
68
KX-TG2521CAT/KX-TGA251RUT
14.1.2. Bottom View
KX-TG2521 CIRCUIT BOARD (Base Unit_Main (Bottom View))
PNLB1732Z
PbF
A
C23
C24
C57
C141
C305
C614
C61
C168
C820
C826
C65
C814
C90
C72
C422
C625
C631
C617
C421
C84
C55
C53C137
C423
C54
R615
R2
R57
R117
R29
TP9
R12
R77
R78
DC_IN
R36
R34
R37
R33
R81
IC7
D10
Q9
Q421
DCP
SPp
SPm
DCM
C624
C637
C19
C22
C56
C14
C18
C155
CL2
C857
C855
C167
C623
C626
C856
C858
C837
C169
C170
C136
C171
C52
CL1
C146
C150
C149
C145
C615
C75
C74
CLK
C616
C630
C60
ANT2_TP
ANT1_TP
R24
R23
R20
R19
R18
R116
R87
R86
R429
R425
R424
R430
R426
R76
R40
R13
R35 R32
R75
R428
R427
LINE_DC
CHG
RED
BLK
RED
RED
WHT
RED
BLK
BLK
GRN
YLW
CHG
SP
DC
L2R
L1R
L1T
L2T
IC421
TP10
TP15
TP15-sub
TP16
TP16-sub
RA80
JTAG
RA1
D21
D27
D15
D16
D26
D24
D23
Q5
Q2
Q8
Q10
E
E
14
GND_C
GND2
UTX2
URX2
GND
J101
VDD5
VDD3
VDD1
VDD2
VDD4
URX
UTX
L2T
L1T
L1R
L2R
SP+
SP-
DC+
DC-
CHG-
CHG+
VDD3
(3V)
CP2.5V
VDD2
(2.5V)
GND
URX
JIG
UTX
}
VDD1
1.8V
CLK
(10.368MHZ)
VDD4
(CP3.0V)
Click on the first or last page to see other KX-TG2521CAT / KX-TGA251RUT service manuals if exist.