Panasonic KX-TCA285RU Service Manual ▷ View online
57
KX-TCA285RU
14 Printed Circuit Board
14.1. Handset
14.1.1.
Component View
VDDC
3.0V
R542
Q540_E,C,B
BATT
GND
BATT+
BATT-
DOUT3V
Q527,Q523_E
IC203_1pin
R210
C211
Q524,Q528_E
5.0V
X1_1pin
IC401
R517
R514
R505,R506,R507
R509,R510,R511
JP3
Q521_C,B
L201
R541
R540
L200
L41
SMT
(IC100 57pin)
L601
R401
DOUT3V
C21
R402
R403
C23
R210
R216 R217
R218
R219
R602
R603
C30
R605
C31
R606
C32
R607
C33
R220
C34
C35
C36 C37
C39
3.0V
C40
C41
C42
C43
C44
C45
C46
C48
C49
CHG+
MIC
-
MIC+
CHG
-
GND_J
C50
C51
C201
C202
C203
C54
C204
TH
RA101
C206
C207
C210
RA300
RA301
C211
BT3.0V
C213
C215
C216
C217
C218
C601
C223
C226
SPM
SPP
C1
C2
C3
C4
C5
C6
ZA1
C9
VBG
D203
TCK
URX
TDI
L300
L301
2
3
4
5
1
L302
L303
TDO
L304
L305
IC200
IC201
IC202
IC203
IC205
ANT_TP1
ANT_TP2
JP2
IC401
UTX
Q521
SP-PHONE
BLU
JP3
ORG
Q523
MIC+
Q524
MIC-
Q527
Q528
IC601
5.0V
Q540
R104
R106
R300
R301
R302
R303
R304
R305
R306
R308
R309
CN100
VIB
BLK
R505
R506
R507
R120
R314
R509
L1
R316
L2
R317
R510
ANT_BT
R511
R320
R514
RTCK
R517
CN500
C101
C102
C104
C105
C106
C107
C108
C109
D50
D51
L21
C301 C302
C110
IC1
C111
C305
C112
C306
C113
C307
C114
C115
C116
SPI_MISO
C117
C118
C119
VDDC
TMS
R540
C310
RA401
R541
L30
C311
R542
L32
C312
C507
R543
L33
C313
L34
C314
L35
C315
C316
C317
R14
C318
L39
C319
L40
C320
L41
F201
C321
C322
C323
C324
C325
C326
C327 C328
SPI_MOSI
R3 R6
R7
R8
R9
OF1
OF2
D300
D301
D302
D303
BATT
D304
D305
BATT+
2.5A
BATT-
L200
L201
Q601
Q602
IC100
IC101
IC102
CKM
L601
SPI_CSB
X1
D540
C10
C11
C12
C13
C14
C15
R201
C16
R203
C17
R204
C18
GND
R205
C19
R206
R207
R208
R209
SPI_CLK
L38
L42
C53
R501
C502
C331
R122
R321
CN301
L31
C52
C55
L36
C47
L22
R123
R124 R121
R125
PbF
A
PNLB2026Z -EC KX-UDT121/KX-TCA285
KX-TCA28558 MAIN BOARD Component View
JP1
RED
58
KX-TCA285RU
14.1.2.
Bottom View
CN3
R527
R518
*
1
2
3
4
5
6
7
8
0
ZA2
ZA3
LEFT
LED520
LED521
LED522
LED523
LED524
LED525
LED526
LED527
LED528
LED529
DOWN
R518
R519
R520
R521
R522
R523
R524
R525
R526
R527
RIGHT
MENU
SOFTA
SOFTB
HOLD
SHARP
UP
MIC
CN3
FCT
11
1
PWR
REV+
REV-
TALK
FUNC
FLEX
SOFTC
LED530
LED531
GRN RED
9
CLR
RF
KX-TCA28558 MAIN BOARD Bottom View
59
KX-TCA285RU
14.2. Charger
IC1
TP3
L1
C3
L2
C2
TP4
TP4
J1
2
F1
L1
TP3
D1
C3
L2
C2
C1
3.0A
1
5
4
1
8
PbF
PNLB2059Z -IG
TP4
IC1
A
KX-TCA285
58 MAIN BOARD
(CHARGER UNIT) Component View
60
KX-TCA285RU
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.
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