Panasonic KX-TCA275RU Service Manual ▷ View online
61
KX-TCA275RU
14 Printed Circuit Board
14.1. Handset
14.1.1. Component View
IC601
CN1
IC2
IC3
IC4
Q8
Q17
C26
R30 R36
R39
R75
R31
D16
Q11
Q12
C33
C34
Q4
X1
C109
R28
D13
C27
R29
C19
C29
L4
R6
R11
C9
R12
R7
R9
C121
C108
C120
C110
D12
R16
R52
R40
C12
C20
R5
C5
L1
IC1
IC602
FIL601
C674
C657
C646
C650 C656
C678
C651
C65 C64
C68
L614
TP601
D602
C649
R632
C671
R633
R634
C672
C683
C601
C684
C677
C681
C676
C682
R18 R19
R20
R17
CN7
SYRI
C53
C60
C44
R41 C35
CK16
R56
C57
R63
C70
C2
CK15
C31
R38
R68
C63
C59
C11
C16
C14
C45
C51
C47
C25
C49
C48
C604
C603
C605
R613
C606
R603
L602
L630
R608
C623
R606
C621
R605
C620
C624
R610
R612
R614R611
C625
L601
FB606
R615
C54
C56
C647
FB603
C626
C691
C627
L608
C630 C633
C631 L606
C631 L606
C632
C648
L616
JP601
C673
C666
C670
L615
L631
L610
C653
C680
L611
C652
L621
C665
L620 D601
L617
C660
C643
R645
C607
C675
D14
R53
C40
R21
R22
R4
R3
R25
R24
C72
C46
R58
R67
C42
R62
R71
R74
C122
R60
R54
R57
C55
C66
C30
C52
R61
C50
C43
C13
C15
R23
C18
R15
R13
C7
R10
L2
C6
IP101
D11
R14
L3
C17
R55
R35
D15
R65
R64 R59
R42
R66
C609
C622
C610
R607
R626
C608
R604
C634
L632
C642
C645
C690
C623
L605
L603
C67 C62
R625
C654
IC603
Q5
C41
Q14
Q13
Q7
Q1
IC5
CN5
Q6
IC6
Q10
R32
R33
R26
R37
R1
C28
C22
CK3
CK10
C10
R73 R8
CK8 CK6 CK4 C74
C8
C1
CN6_2
R34
Q2
CK1
Q3
R72
C39
C61
C58
C36
C38
C69
C37
C73 C24 C23 C21 R43 R27
CK2
C4
R69
R70
CK5
PbF
A
R BI
PSUP1708Z -A
KX-TCA275RU CIRCUIT BOARD (HANDSET) Component View
CK12
CN3
CN4
CK18
CK17
CK601
CK11
CK602
1
2
3
4
5
62
KX-TCA275RU
14.1.2. Flow Solder Side View
D1
RA5
1
CN2
SW11
R2 C3
RA4
RA3 RA2
RA1
SW10
SW40
SW1
SW00
SW30
SW20
SW01
SW31
SW50
SW41
SW42
SW32
SW52
SW02
SW21
SW51
SW22
SW12
SW53
SW23
SW43
SW13
CN9
SW03
SW33
D23
R82
D24
D25
R83
R84
R85
D26
R81
D22
R80
D21
D20
R79
D19
R78
R77
D18
R76
D17
D10
R51
D9
R50
R49
D8
R48
D7
R45
D4
D6
R47
D3
R44
D5
R46
KX-TCA275
RU CIRCUIT BOARD (HANDSET) Bottom View
63
KX-TCA275RU
14.2. Charger Unit
14.2.1. Component View
14.2.2. Flow Solder Side View
15 Appendix Information of Schematic Diagram
Note:
1. DC voltage measurements are taken with an oscilloscope or a tester with a ground.
1. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
1. The schematic diagrams and circuit board may be modified at any time with the development of new technology.
CN1
CK1
CK3
IP1
C1
R1
C2
C6
R8
C4
C5
C3
D1
R6
CK2
CK7
CK6
CK5
CK4
R7
R5
R4
R3
R2
Q1
Q2
PbF
PSUP1712Z
A
KX-TCA275
RU CIRCUIT BOARD
(CHARGER UNIT) Component View
PbF
PSUP1712Z
A
CHRG
CHRG
KX-TCA275
RU CIRCUIT BOARD
(CHARGER UNIT) Bottom View
64
KX-TCA275RU
16 Exploded View and Replacement Parts List
16.1. CPU Data (Handset)
16.1.1. IC3 (BBIC)
Pin No
Description
I/O
Connection
at Normal mode
at Reset mode
1
VDDIO
-
VDDIO
-
-
2
VSS
-
VSS
-
-
3
AD8
D_O
AD8
O_0/1
O-0/1
4
AD9
D_O
AD9
O_0/1
O-0/1
5
AD10
D_O
AD10
O_0/1
O-0/1
6
AD11
D_O
AD11
O_0/1
O-0/1
7
AD12
D_O
AD12
O_0/1
O-0/1
8
AD13
D_O
AD13
O_0/1
O-0/1
9
AD14
D_O
AD14
O_0/1
O-0/1
10
P3[7]/PD7
D_O
RF CONT
O_0/1
O-Hi-Z
11
P3[1]/PD1
D_O
RXDSG
O_0/1
O-Hi-Z
12
P3[5]/PD5
D_O
SPAMP
O_0/1
O-Hi-Z
13
P3[4]/PD4
D_O
LCD_RST
O_0/1
O-Hi-Z
14
P3[3]/PD3
D_O
PAON
O_0/1
O-Hi-Z
15
P3[2]/PD2
D_O
PSEL
O_0/1
O-Hi-Z
16
VDD
-
VDD
-
-
17
VSS
-
VSS
-
-
18
RFCLK
D_O
SYRI
O
O-0
19
VDDRF
-
VDDRF
-
-
20
VSSRF
-
VSSRF
-
-
21
Xtal1
A_I
Xtal1
I
I
22
CAP
A_I
CAP
I
I
23
AVS
-
AVS
-
-
24
AVD
-
AVD
-
-
25
RSSI
I
RSSI
I
I
26
RDI
D_I
RXDA
D_I
I
27
CMPREF
A_I
NC
D_I
D_I
28
TDO
A_O
TXDA
O
O
29
AD15
D_O
AD15
O_0/1
O-0/1
30
AD16
D_O
AD16
O_0/1
O-0/1
31
AD17
D_O
AD17
O_0/1
O-0/1
32
AD18
D_O
AD18
O_0/1
O-0/1
33
AD19
D_O
AD19
O_0/1
O-0/1
34
AD20
D_O
AD20
O_0/1
O-0/1
35
AD21
D_O
AD21
O_0/1
O-0/1
36
AD22
D_O
NC
O_0/1
O-0/1
37
AD23
D_O
NC
O_0/1
O-0/1
38
LE
D_O
SYEN
O_0/1
O-0
39
SO
D_O
SYDA
O_0/1
O-Hi-Z
40
SK
D_O
SYCL
O_0/1
O-0
41
DAC/ADC2
A_I
ADC2
A_I
I
42
P3[6]/PD6
D_O
KEY_BL
O_0/1
O-Hi-Z
43
RDN
D_O
READ
O_0/1
O-1
44
WRN
D_O
WRT
O_0/1
O-1
45
MI/READY
D_IPU
NC
I-PU_0/1
I-PU
46
SCLK
D_O
NC
O_0/1
O-1
47
UTX/P0[0]
D_O
UTX
O-PU_0/1
I-PU
48
URX/P0[1]
D_I
URX
I_0/1
I
49
JTIO/P0[2]
D_IPU
JTIO
I-PU_0/1
I-PU
50
PCM_FSC1/P0[3]
D_I
COL0
I_0/1
I-PU
51
PCM_FSC0/P0[4]
D_I
COL1
I_0/1
I-PU
52
PCM_CLK/P0[5]
D_I
COL2
I_0/1
I-PU
53
PCM_DOUT/P0[6]
D_I
COL3
I_0/1
I-PU
54
PCM_DIN/P0[7]
D_I
COL4
I_0/1
I-PU
55
VDDIO
-
VDDIO
-
-
56
VSS
-
VSS
-
-
57
DREQ0n/INT0n/P1[0]
D_O
ROW0
O_0/1
I-PU
58
DACK0n/INT1n/P1[1]
D_O
ROW1
O_0/1
I-PU
59
ACS1/DREQ1n/INT2n/P1[2]
D_O
SRAM_CS
O_0/1
I-PU
60
ACS0
D_O
FLASH_CS
O_0/1
O-1
61
ACS2/DACK1n/INT3n/P1[3]
D_O
LCD_CS
O_0/1
I-PU
62
HOLDn/INT4n/P1[4]
D_O
ROW2
O_0/1
I-PU
63
VDDE/HOLDACKn/INT5n/P1[5]
D_O
ROW3
O_0/1
O-1
64
BE1n
D_O
SRAM_UB
O_0/1
O-1
65
BE0n
D_O
SRAM_LB
O_0/1
O-1
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