Panasonic KX-TCA285RU Service Manual ▷ View online
53
KX-TCA285RU
KX-TCA285
58 MAIN BOARD No.1 2/2
(1)
(2)
(3)
(4)
(3)
(4)
(5)(6)
(8)
(7)
(9)
(10)
(11)
(12)
(14)
(14)
(15)
(16)
(16)
(17)
(13)
13.824MHz
TX_RF
RX_RF
TX_RF
TX_RF
RX_RF
RX_RF
SP-phone_RX
Handset_RX
SP-phone_TX
Handset_TX
6
5
8
7
CHG_DET
VIB_CTRL
C326
NC
C313
10p
D301
NC
D300
NC
GND
C328
1000P
GND GND
GND GND
C327
NC
C314
NC
SP-PHONE_SPEAKER
+
-
C321
L302
C316
1000p
C320
470P
C322 1000P
1000P
L303
L300
C16
NC
GND
GND
VBAT_3.0V
VBAT_3.0V
GNDA
GNDA
GNDA
GNDA1 GNDA1 GNDA1
GNDA1
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
GNDA
SPP
SPM
MIC+
MIC-
GNDA
GND
GND
GND
GND
GND
L305
L304
L301
C325
GNDA
VCCA
HEADSET_DET
VCCA
C17
NC
R14
R301
390
R305
R304
R302
0.039u
(1608)
3.3k
R303
2.2k
R317 10
R314
100
D304
4.3V
4.3V
D305
D302
4.3V D303
4.3V
R308
R309
100k
100k
C315
10u (1608)
C18
1u
CN301
1
4
2
3
5
C311
NC
C49
10p
GND
GND
GND
GND
GND
C48
10p
ANT_TP1
1 2
GND
GND
GND
GND
LNA_INN
GND
GND
RX_SW
GND
GND
C44 0.2p
LNA_INP
BAL_OUT1
ANT1
C50
10p
ANT_TP2
1
2
ANT2
BAL_OUT2
GND
GND
GND
VCC_PA
C36
10p
TX_SW
REV-
REV+
C312
NC
RA301
120p
1
2
3
4
R306
C310
22u (2125)
GND
C51
10p
L40
NC
GND
C319
NC
C318
NC
1.5p
C43
NC
C31
1.5p
L32 1.5n
D51
D50
GND
GND
CL1
CL2
CL3
ZA2
1
4
ZA3
1
2
3
2
3
4
C331
R316 0
R320
NC
1k
2.2k
2.2k
0
X1
13.824M
1
2
4
4
3
MIC
AP1
1
2
C52
3p
GND
GND
L38
L42 0
L33
10p
C47
4.7n
4.7n
C41
5p
C54
2.2p
L21
C53
1.5p
L34
5.1n
C34
1.8p
C35
1.8p
C37
1.5p
C32
0.5p
C30
0.5p
R321
C55
NC
L30 4.7n
L31 6.8n
C42
3p
L36
7.5n
C45
0.8p
C46 10p
180n
180n
10p
C324
C323
1.5p
1.5p
C317
47u
L35 2.7n
L39
1.2p
C33
1.2p
C
E
B
A
D
F
MIC POWER
RECEIVER+
RECEIVER-
HEADSET_DET
Headset_MIC+
Speakerphone_SP+
Speakerphone_SP-
MIC+
MIC-
Headset_RECEIVER
GAP
GAP
Receiver
54
KX-TCA285RU
KX-TCA285
58 MAIN BOARD No.2 1/2
(1)
(2)
(3)
(4)
(4)
(5)(6)
(7)
(8)
(9)
(10)
(11)(12)
(13)
(14)
(15)
(16)
(17)(18)
(19)(20)
(21)(22)
(23)
(24)
C
E
B
A
D
F
3
2
4
1
KBIO_1
KBIO_2
KBIO_3
KBIO_4
KBIO_7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
SRAM_CS
SRAM_WE
SRAM_OE
SRAM_BHE
A17
D15
SRAM_BLE
KBIO_5
KBIO_6
KBIO_8
KBIO_8
BT_WakeUPIN
FL_DI
BT_PCM_IN
BT_PCM_SYNC
BT_PCM_CLK
BT_RESET
RTCK
TMS
TDI
TCK
TDO
BT_WakeUPIN
KBIO_6
ON/OFF
BT_ON
BT_PCM_OUT
BT_WakeUPOUT
A18
UTX
UTX
URX
URX
BELL_RED
BELL_GREEN
FL_CLK
FL_DO
FL_CS
KBIO_3
KBIO_5
KBIO_1
KBIO_2
KBIO_4
DOUT 3.0V
CLR
FUNC
65
0
7
3
SOFTC
LEFT
MENU
DOWN
FLEX
RIGHT
9
SHARP
SOFTB
1
HOLD
PWR
TALK
8
UP
SOFTA
4
2
*
C118
0.1u
GND
DOUT3.0V
UTX
GND
GND
GND
URX
GND
GND
C119
0.1u
GND
GND
R120
330k
R104
3.3k
GND
BT3.0V
C601
0.1u
BT3.0V
R602
180k
GND
R603
120k
R605
2.2k
R606
47k
R607
22k
BT3.0V
GND
RA101
10k
1
2
3
4
5 6 7 8
Q601
Q602
DOUT3.0V
CN100
1
2
3
2
3
RTCK
ANT_BT
1
2
GND
SPI_MOSI
SPI_CSB
SPI_MISO
SPI_CLK
IC101
4M SRAM
A1
A4
A2
A5
I/O7 G6
VCC2 E1
I/O8 B1
A3
B3
A5
C3 A4
B4
*CE
B5
A0
A3
A6
C4
A7
D4
I/O4 E5
VSS2 E6
I/O10 C2
I/O9 C1
VCC1 D6
I/O11 D2
I/O6 F6
I/O5 F5
A10
H4
A11
H5
A12
G3
A9
H3
A13
G4
A14
F3
A15
F4
I/O2 C6
I/O1 C5
I/O0 B6
I/O3 D5
I/O15 G1
I/O13 F2
I/O14 F1
I/O12 E2
VSS1 D1
*WE
G5
A8
H2
*OE
A2
*BHE
B2
*BLE
A1
NC1
A6
NC5
H6
NC2
E3
NC4
H1
NC3
G2
A16
E4
A17
D3
TDO
TDI
TCK
TMS
OF1
OF2
GND_J
R106 150
LED530
LED531
R514
R517
820
330
DOUT3.0V
GND
L41
10n
L601
27n
R121
R122
IC102
1 *CS
2 DO/IO1
6
CLK
7
*HOLD/IO3
3 *WP/IO2
8
VCC
4 GND
5
DI/IO0
IC601
14
RESETB
19
RF
20
GND8
21
GND9
22
GND10
23
GND11
29 USB_D+
30 USB_D-
31 PCM_IN
32 PCM_CLK
4
GND2
5
CTS
6
RX
7
GND3
11
SPI_CSB
12
SPI_MISO
13
SPI_CLK
16
GND5
17
GND6
18
GND7
26 GND12
27 VCC
28 GND13
1
GND1
2
PCM_SYNC
3
PCM_OUT
8
RTS
9
TX
10
SPI_MOSI
15
GND4
25 PIO2
24 PIO1
R123
R124
R125
100
100
100
100
100
BELL LED
(RED/GREEN)
GAP
BT_ANT
Bluetooth Unit
55
KX-TCA285RU
KX-TCA285
58 MAIN BOARD No.2 2/2
(1)
(2)
(3)
(4)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
Start Monitor when "SFR" command is executed,
13.824MHz freguency will be output.
1.775V
6
5
4
8
7
C
E
B
A
D
F
LCD_CD
LCD_SID
LCD_SCL
LCD_CS
BT_PCM_OUT
BT_PCM_SYNC BT_PCM_CLK
A0
A1
A14 A15 A16
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
SRAM_CS
SRAM_WE
SRAM_OE
SRAM_BLE
SRAM_BHE
UTX
TDO
TDI
TCK
TMS
A17
RTCK
CP_ON
LCD_SCL
LCD_SID
LCD_CD
SDA_IIC
LCD_BL2
LCD_BL1
LCD_BL2
SCL_IIC
FL_DI
FL_DO FL_CLK FL_CS
BT_PCM_IN
URX
HEADSET_DET
ON/OFF
CHG_State
HEADSET_DET
CHG_State
LCD_RESET
KBIO_7
BT_ON
LCD_BL1
LCD_BL2
BELL_RED
BT_WakeUPOUT
BT_RESET
BELL_GREEN
A18
SCL_IIC
SDA_IIC
CP_ON
LCD_CS
LCD_RESET
LED524
LED521
GND
LED520
GND
VBAT_3.0V
LED522
LED523
GND
LED525
GND
IF_CLK_IF
IF_BAT_OK
IF_RX1
IF_MLSE
IF_T_DATA
IF_CDC_DIR
IF_CDC_DAT_AD
IF_CDC_DAT_DA
IF_CLK_PLL
IF_INT_ANA
IF_NPORST
IF_NARES
IF_DATA_AD
IF_DATA_DA
IF_EN_AD
IF_EN_DA
GND
GND
CP_ON
VDDC
VDDC
VDDC
GND
C108
GND
GND
C106
C105
GND
GND
C104
0.1u
0.1u
0.1u
C102
GND
C101
0.1u
0.1u
GND
C116
C115
C114
C113
C112
C111
0.1u
0.1u
GND
GND
GND
C117
0.1u
GND
C107
0.1u
0.1u
C110
NC
GND
GND
C109
NC
LED526
LED527
LED528
LED529
SLC
MODQ
DOUT3.0V
GND
DOUT3.0V
GND
GND
GND
HEADSET_DET
CN3
11
11
VCI
CN3
7
7
DB0_SDA
CN3
3
3
5V
CN3
9
9
NRESET
CN3
2
2
LED1
CN3
8
8
NCS
CN3
10
10
DNC_SCL
CN3
4
4
VSSA
CN3
1
1
LED2
CN3
5
5
IOVCC
CN3
6
6
NWR_RNW
ON/OFF
KBIO_7
5.0V
DOUT3.0V
CHG_State
Q521
Q528
BT_ON
GND
R401
10k
R518
R519
R520
R521
R522
R524
R525
R526
RA401
1 23
4
GND
R403
NC
R506
R510
R507
R511
Q523
CKM
C507
0.1u
R505
R509
470
470
120
120
3.3k
3.3k
Q527
Q524
IC100
39
IF_CLK_O 40
IF_CLK_PLL 41
IF_DATA_AD 42
IF_DATA_DA 43
IF_EN_AD 44
IF_EN_DA 45
IF_INT_TS 46
IF_NARES 47
IF_NPORST 48
IF_MOD_I 49
IF_MOD_Q 50
IF_SYNC_MTCH 51
IF_SLC_CTRL_DA 52
IF_T_DATA 53
IF_VDDC_SENSE 54
IF_VDDIO_SENSE 55
VDDC3 56
CHARGE_PUMP 57
EBI_LCD0/CS1 58
EBI_LCD1/DATA0 59
EBI_LCD2/DATA1
60
VDDEBI3
61
EBI_LCD3/DATA2
62
EBI_LCD4/DATA3
63
EBI_LCD5/DATA4
64
EBI_LCD6/DATA5
77
EBI_LCD16/DATA15
78
EBI_LCD17/WE_E
79
EBI_LCD18/OE_R_W
80
EBI_LCD19/BEB1
81
EBI_LCD20/CS0
82
VDDEBI6
83
EBI_LCD21/BEB0
84
EBI_LCD22/ADD1
85
EBI_LCD23/ADD2
86
GPIO27
87
VDDUSB
88
USB_DM/GPI28
89
USB_DP/GPI29
90
VDDC4
91
JTAG_TDO
92
JTAG_TDI
93
JTAG_TCK
94
JTAG_TMS
95
JTAG_RTCK
96
GPIO0/SCL_IIC
97
GPIO1/SDA_IIC
98
GPIO2
99
GPIO3
100
GPIO4
101
GPIO5
102
GND4
103 GPIO6
104 GPIO7
105 GPIO8
106 VDDIO1
107 GPIO9
108 GPIO10
109 GPIO11
110 EBI_LCD24/ADD3
111 EBI_LCD25/ADD4
112 EBI_LCD26/ADD5
113 VDDEBI7
114 EBI_LCD27/ADD6
115 EBI_LCD28/ADD7
116 EBI_LCD29/ADD8
117 EBI_LCD30/ADD9
118 EBI_LCD31/ADD10
119 EBI_LCD32/ADD11
120 VDDEBI8
121 EBI_LCD33/ADD12
122 EBI_LCD34/ADD13
123 EBI_LCD35/ADD14
124 GPIO12
125 GPIO13
126 GPIO14
127 GPIO15
128 GPIO16
1
GPIO17
2
VDDIO_1
3
GND1
4
EBI36/ADD15
5
EBI37/ADD16
6
EBI38/ADD17
7
VDDEBI1
8
EBI39/ADD18
9
EBI40/ADD19
10
EBI41/ADD20
11
VDDIO_2
12
GPIO18
13
GPIO19
14
GPIO20
15
GPIO21
16
GPIO22
17
GPIO23
18
GPIO24
19
GPIO25
20
GPIO26
21
VDDC1
22
VDDC2
23
EBI42/ADD21
24
EBI43/ADD22
25
EBI44/CS2
26
VDDEBI2
27
EBI45/WAIT
28
EBI46/CLK_BURST
29
EBI47/ADV
30
GND2
31
GND3
32
NC1
33
VDDINT
34
IF_BAT_OK
35
IF_CDC_DAT_AD
36
IF_CDC_DAT_DA
37
IF_CDC_DIR
38
IF_CLK_IF
65
EBI_LCD7/DATA6
66
EBI_LCD8/DATA7
67
NC2
68
VDDEBI4
69
EBI_LCD9/DATA8
70
EBI_LCD10/DATA9
71
EBI_LCD11/DATA10
72
EBI_LCD12/DATA11
73
EBI_LCD13/DATA12
74
EBI_LCD14/DATA13
75
VDDEBI5
76
EBI_LCD15/DATA14
P5
3V
R501
NC
NC
C502
IC401
9
P6
10
P7
11
*INT
12
SCL
13
SDA
14
VCCP
15
VCCI
16
ADDR
4 P2
8
P5
1 *RESET
2 P0
3 P1
5
P3
6
GND
7
P4
VBAT_3.0V
R523
R527
470
470
470
470
470
470
470
470
220
100
KEY BACKLIGHT
(Yellow Green)
128x160dot
To 1.8 TFT Color LCD
TO APU
LCD Backlight Anode
LCD Backlight Cathode
0.1u
0.1u
0.1u
0.1u
56
KX-TCA285RU
13.2. Charger
KX-TCA28558
MAIN BOARD
Charge current
A
B
C
D
E
F
3
4
2
1
GND
GND
GND
GND
GND
IC1
1
VO
2
NC1
3
GND
4
CS
5 CONT
6 NC2
7 NC3
8 VIN
9
FIN
D1
F1
GND
PNLB2059ZA-IG
PCB
RE1
RE1
TP3
CHG+
TP4CHG-
J1
1
2
C2
10u
C1
1u
L1
L2
C3
0.1u
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