Panasonic KX-TG8286RUT / KX-TGA828RUT Service Manual ▷ View online
81
KX-TG8286RUT/KX-TGA828RUT
SP-Phone RX (SP out)
SP-Phone TX (Mic in)
TAM Play
TAM Rec
1
GPIO4/
PCM_DI
2
GPIO5/PCM_DO
9
SPI_DI
3
GPIO6/PCM_CLK
4
GPIO7/PCM_FSC
5
VDD1
6
VDDIO1
7
CLK
8
*PF
10
SPI_DO
11
SPI_CLK
12
SPI_EN
13
AVD1
14
GPO9/PAOUTp
15
VDDPA
16
GPO8/PAOUTm
17
GPIO0
18
GPIO1
19
VDD2
20
VDDIO2
21
GPIO2
22
GPIO3
23
*RST
24
AVD2
25
*LSR
26
LSRp
27
MICh
28
*MIC
29
VREFm
30
VBUF
31
MICp
32
VREFp
33
Fin
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
MIC
+3.0V
+1.8V
+3.0V
100k
R610
100k
R611
100k
R612
100k
R613
1
*OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
11
CK
12
Q7
13
Q6
14
Q5
15
Q4
16
Q3
17
Q2
18
Q1
19
Q0
20
VCC
1
*OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
11
CK
12
Q7
13
Q6
14
Q5
15
Q4
16
Q3
17
Q2
18
Q1
19
Q0
20
VCC
1
*OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
11
CK
12
Q7
13
Q6
14
Q5
15
Q4
16
Q3
17
Q2
18
Q1
19
Q0
20
VCC
1
*OE
2
D0
3
D1
4
D2
5
D3
6
D4
7
D5
8
D6
9
D7
10
GND
11
CK
12
Q7
13
Q6
14
Q5
15
Q4
16
Q3
17
Q2
18
Q1
19
Q0
20
VCC
CL609
CL606
+3.0V
2.2k
R603
10k
R609
+3.3V
0
R607
+3.0V
1k
R620
K0.01u
C625
R624
NC
R625
NC
R622
NC
0
R626
R621
NC
R623
NC
+3.0V
+3.0V
10k
R627
47k
R628
47k
R629
+3.0V
2.2k
R602
0
R831
2.2k
R601
2.2k
R604
100k
R606
6.3
10u
C608
330
R605
+3.0V
1
A15
2
A14
3
A13
4
A12
5
A11
6
A10
7
A9
8
A8
9
NC1
10
NC2
11
*WE
12
NC3
13
NC4
14
NC5
15
NC6
16
A18
17
A17
18
A7
19
A6
20
A5
21
A4
22
A3
23
A2
24
A1
25
A0
26
*CE
27
VSS1
28
*OE
29
DQ0
30
DQ8
31
DQ1
32
DQ9
33
DQ2
34
DQ10
35
DQ3
36
DQ11
37
VDD
38
DQ4
39
DQ12
40
DQ5
41
DQ13
42
DQ6
43
DQ14
44
DQ7
45
DQ15
46
VSS2
47
NC8
48
A16
NC
1
A4
44
A5
2
A3
3
A2
4
A1
5
A0
6
*CE
7
DQ0
8
DQ1
9
DQ2
10
DQ3
11
VCC1
12
VSS1
13
DQ4
14
DQ5
15
DQ6
16
DQ7
17
*WE
18
A15
19
A14
20
A13
21
A12
22
NC1
23
NC2
24
A11
25
A10
26
A9
27
A8
28
NC3
29
DQ8
30
DQ9
31
DQ10
32
DQ11
33
VCC2
34
VSS2
35
DQ12
36
DQ13
37
DQ14
38
DQ15
39
*LB
40
*UB
41
*OE
42
A7
43
A6
+3.0V
CL604
0
R630
100
R631
100
R632
100
R633
100
R634
100
R635
100
R636
100
R637
100
R638
100
R639
100
R640
100
R641
100
R642
100
R643
100
R644
100
R645
100
R646
D601
D602
D603
D604
D605
D606
D607
D608
MICP
MICM
10k
R648
10k
R647
L601
L602
C609
1u
C629
100p
1n
C621
100p
C622
100p
C620
100p
C630
100p
C631
C603
100n
C604
100n
C605
100n
C606 100n
C607
100n
C611
100n
C612
100n
C613
100n
C614
100n
C615
100n
C617
100n
C616
100n
C618
100n
C619
100n
C624
100n
C626
100n
10p
C847
1n
C627
1n
C623
C838
NC
NC
C628
C610NC
1
SI
2
SCK
3
*RESET
4
*CS
5
*WP
6
VCC
7
GND
8
SO
6.3
100u
C632
Q603
Q604
Q602
NC
D611
NC
D612
NC
D802
NC
SP+
SP-
PCM_DOUT
PCM_DIN
PCM_CLK
PCM_FSC
SPIDO
SPIDI
SPICLK
LINE1_NSA
LINE2_NSA
COM1
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
Answer_LED
Massage_LED
Line1_LED
Line2_LED
Inuse_LED
SPphone_LED
SEG0
SEG1
SEG2
SEG3
D7
D6
D5
D4
D3
D2
D1
D0
COM0
D8
D9
D10
D11
D12
D13
D14
D15
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
A0
READ*
KEY_OUTPUT_0
KEY_OUTPUT_1
KEY_OUTPUT_7
KEY_OUTPUT_6
KEY_OUTPUT_5
KEY_OUTPUT_4
KEY_OUTPUT_3
KEY_OUTPUT_2
TAM_RESET*
SPIDO
SPIDI
TAM_RESET*
TAM_FLASH_RY/BY*
TAM_CS*
TAM_CLK
TAM_CLK
A16
A15
A14
A13
A12
A11
A10
A9
A8
WRITE*
FLASH_CS*
A18
A17
A7
A6
A5
A4
A3
A2
A1
SPICLK
D15
D7
D14
D6
D13
D4
D5
D12
D1
D8
D0
D3
D9
D11
D2
D10
A5
A6
A7
READ*
SRAM_UB*
SRAM_LB*
D15
D14
D13
D12
A4
A3
A2
A1
A0
SRAM_CS*SRAM_CS*
D0
D1
D2
D3
D4
D11
D10
D9
D8
A8
A9
A10
A11
D5
D6
D7
WRITE*
A15
A14
A13
A12
LINE1_HOOK
LINE2_HOOK
TAM_FLASH_CS*
+
-
2/4
NC: No Components
KX-TG8286RU SCHEMATIC DIAGRAM (2/4) (Base Unit_Main)
IC601
IC605
IC608
IC607
IC606
IC603
IC604
IC602
(g)
(f)
(h)
(i)
(1)
(2)
(3)
(4)
(5)
(6)
(7)
82
KX-TG8286RUT/KX-TGA828RUT
L1 RX
RX
Loop Current L2
Loop Current L1
RX
L1 Caller ID (Bell)
L2
IN-USE
L1
IN-USE
L2
Caller
ID/Bell
L1 TX/DTMF
L1 TX/DTMF
L2 TX/DTMF
D10p
C224
12
R224
R218
NC
100k
R205
K4700p
C222
NC
C204
27
R225
2.7k
R206
L2T
100k
R226
R223
NC
D201
L2R
0.1
*C234
NC
C216
SA201
1u
C228
NC
C116
12
R124
K4700p
C122
NC
C152
NC
C104
TP106
27k
R121
0
R110
8.2k
R123
NC
R109
D101
NC
C131
L1T
27
R125
100k
R105
100k
R126
LINE1_DC
SA101
L1R
K0.056u
C151
D10p
C124
0.1
*C134
1u
C128
PC202
1
23
4
16
10u
C255
PC203
1
23
4
+3.0V
+3.0V
2.2k
R208
2.2k
R214
NC
R209
UTX
JTAG
URX
GND
+3.0V
1k
R510
1k
R514
1k
R515
10k
R511
10k
R512
100
R513
56
R151
18
R152
PC102
1
23
4
+3.0V
2.2k
R108
100k
R107
10M
R104
10M
R103
8.2M
R141
100n
C142
8.2M
R142
100n
C141
10M
R203
10M
R204
680p(3216)
C102
680p(3216)
C103
680p(3216)
C202
680p(3216)
C203
10u
C133
10u
C233
Line2
CN201
1
L2R
2
L2T
Data Port(Line1)
CN102
1
L1R
2
L1T
+1.8V
10
R146
10
1u
C143
300V
SA102
300V
SA202
1M
R174
1M
R172
180k
R171
10n
C161
180k
R173
680p(3216)
C171
10n
C162
J220p
C177
10n
C173
10n
C174
100k
R175
J220p
C178
680p(3216)
C172
4.7M
R161
4.7M
R162
100k
R176
1
*C137
22k
*R135
27k
*R136
K4700P(50V)
C117
K4700P(50V)
C217
0
R255
10k
R221
L103
LINE2_DC
10k
R112
680
R113
15k
R235
L101
L102
L201
L202
NC
C231
C121
100n
10p
C175
10p
C176
10p
C839
10p
C840
C153
56n
NC
C132
NC
C232
NC
C517
NC
C518
NC
C519
10n
C105
10n
C205
820
R234
820
R134
22k
R236
0
R210
4.7k
*R122
1k
R222
39k
*R128
2.2k
R106
*C118
220n
470
*R233
470
*R133
3.9k
*C123
3.9k
*C223
Q103
Q104
NC
D501
1
AOUTPUT
2
A-INPUT
3
A+INPUT
4
GND
5
B+INPUT
6
B-INPUT
7
BOUTPUT
8
VCC
D202
D102
560k
R143
560k
R144
Q101
Q201
Q102
Q105
Q205
33
R111
10
R211
CN101
Line1/Line2
L2R
1
L1T
2
L1R
3
L2T
4
5
6
1u
C237
50
2.2u
*C125
2.2u
*C225
LINE1_NSA
LINE1_RX
LINE1_HOOK
LINE1_CID
LINE1_REF
LINE1_TX
LINE1_ADC
3/4
NC: No Components
KX-TG8286RU SCHEMATIC DIAGRAM (3/4) (Base Unit_Main)
IC101
(a)
(b)
(c)
(d)
(e)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(20)
(18)
(19)
83
KX-TG8286RUT/KX-TGA828RUT
L2 RX
L2
IN-USE
L1 Bell
L2 Bell
+4V
+3.3V
+2.5V
L2 Caller ID
Charge current
Handset
L2 TX/DTMF
CN301
2
1
DC_GND
TP302
J220p
C277
100k
R275
J220p
C278
100k
R276
10
R278
+1.8V
10
1u
C279
R307
NC
47k
R306
10k
R308
1k
R309
3.3k
R305
+3.0V
1
1A
2
1B
3
2Y
4
GND
5
2A
6
2B
7
1Y
8
VCC
NC
1
A
2
GND
3
VCC
5
Y
4
+3.0V
100n
C241
8.2M
R242
100n
C242
8.2M
R241
330u/6.3V
C302
100u/25V
C301
4
Fin
1
ADJ/GND
3
Input
2
Output
+2.5V
330u/6.3V
C322
10k
R283
10k
R183
K1.0
C333
K0.01
C331
220
R333
220
R332
22uH
L303
120
R331
K0.1
C332
+3.3V
TP+3.3V
TP+2.5V
680p(3216)
C271
680p(3216)
C272
1M
R272
1M
R274
180k
R271
180k
R273
4.7M
R262
4.7M
R261
10n
C262
10n
C261
10n
C273
10n
C274
100k
R286
+3.0V
47k
R284
47k
R184
18k
R282
18k
R182
100k
R186
1
AOUT
2
A-IN
3
A+IN
4
GND
5
B+IN
6
B-IN
7
BOUT
8
V+
4.7k
R285
4.7k
R185
0
R256
10
1u
C836
10
1u
C837
200
R324
200
R323
1
CE
2
GND
3
VOUT
5
VIN
4
EXT
T201
1
2
4
3
T202
1
2
4
3
L203
L301
L302
6.3
330
C334
56n
C281
56n
C181
68k
R281
68k
R181
C282
100n
100n
C182
TP301
100p
C336
100p
C337
2
VIN
1
VSS
3
VOUT
4
Fin
1n
C305
1n
C335
C283
K0.01u
C284
K0.01u
C285
K0.01u
C286
K0.01u
10p
C275
10p
C276
1n
C850
16
10u
C264
50
1u
C230
3
F001
*C218
220n
Q203
Q204
Q303
Q304
Q305
D302
D303
D304
NC
D305
1
AOUTPUT
2
A-INPUT
3
A+INPUT
4
GND
5
B+INPUT
6
B-INPUT
7
BOUTPUT
8
VCC
560k
R243
560k
R244
D301
22V
CHARGE+
CHARGE-
15
R301
15
R302
LINE2_HOOK
LINE1_CID
LINE2_RX
LINE2_NSA
LINE2_ADC
LINE2_BELL_DET
LINE1_BELL_DET
LINE2_TX
LINE2_REF
LINE2_CID
DC_IN
4.0V CONVERTOR
4/4
NC: No Components
KX-TG8286RU SCHEMATIC DIAGRAM (4/4) (Base Unit_Main)
IC609
IC610
IC102
IC303
IC301
IC201
IC302
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(16)
(17)
(20)
(18)
(19)
(g)
(f)
(h)
(i)
84
KX-TG8286RUT/KX-TGA828RUT
12.3. Schematic Diagram (Base Unit_Operation)
MSG/VM
RingerOFF
STOP
Greeting
HOLD
CONF
ANS-2
ANS-1
UP
DOWN
RPT
L2
INT
*
1
2
3
4
5
6
7
8
9
0
#
REDIAL
FLASH
MUTE
SP
LED904
LED901
LED906
LED902
CN901
1
4V
CN901
2
SEG9
CN901
3
SEG8
CN901
4
SEG7
CN901
5
SEG6
CN901
6
SEG5
CN901
7
SEG4
CN901
8
SEG3
CN901
9
SEG2
CN901
10
SEG1
CN901
11
SEG0
CN901
12
COM1
CN901
13
COM0
CN901
14
SPphoneLED
CN901
15
Inuse_LED
CN901
16
Line2_LED
CN901
17
Line1_LED
CN901
18
Massage_LED
CN901
19
Answer_LED
CN901
20
CN901
21
KEY_OUTPUT_7
CN901
22
KEY_OUTPUT_6
CN901
23
KEY_OUTPUT_5
CN901
24
KEY_OUTPUT_4
CN901
25
KEY_OUTPUT_3
CN901
26
KEY_OUTPUT_2
CN901
27
KEY_OUTPUT_1
CN901
28
KEY_OUTPUT_0
CN901
29
KEY_INPUT_3
CN901
30
KEY_INPUT_2
CN901
31
KEY_INPUT_1
CN901
32
KEY_INPUT_0
SKIP
L1
ERASE
LCD501
1
2
3
4
5
6
7
8
9
10
11
12
LED903
LED905
SELECT
KX-TG8286 SCHEMATIC DIAGRAM (Base Unit_Operation)
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