Panasonic KX-TS2388CAB / KX-TS2388CAW / KX-TS2388RUB / KX-TS2388RUW / KX-TS2388UAB / KX-TS2388UAW Service Manual / Supplement ▷ View online
17
(1)
(2)
(3)
(3)
(4)
(5)
(5)
(6)
(7)
(8)
(9)
(7)
(8)
(9)
(10)
(11)
(11)
(12)
(13)
(14)
(15)
(14)
(15)
(16)
(17)
(18)
(18)
(19)
(20)
(20)
(21)
(22)
(23)
(24)
(25)
(25)
(26)
(27)
(27)
(28)
(29)
(30)
(31)
(32)
(33)
(34)
(35)
(36)
(37)
(38)
(39)
(40)
(41)
(41)
(42)
(43)
(44)
(43)
(44)
(45)
(46)
NC: No Components
Handset Sending
KX-TS880 SCHEMATIC DIAGRAM (Main)
Handset Receiving
Speaker Phone Sending
Speaker Phone Receiving
Ringer
SW101
1
3
2
4
6
5
FLT1
NC
1
4
2
3
JP101
*SA102
NC
2
1
*L101
*L102
JJ101
1
2
IC302
1
VIN
2
GND
4
NC
5
VOUT
3
STBY
JP301
JP302
JP304
JP303
*IC501
1
OUT1
2
IN-1
6
IN-2
7
OUT2
3
IN+1
8
VDD
4
VSS
5
IN+2
*PC101
1
23
4
*JP1
*SW1
4
C
1
2
3
5
6
PC1
1
2
3
4
*Q201
NC
*Q603
*Q652
NC
JP7
*J6
JP5
J2
J1
*J7
J39
*SW2
NC
4
2
1
12
11
6
9
7
5
10
3
8
J32
*J33
@NC
J35
J5
J21
J8
*J34
@NC
J36
J4
*J38
NC
J20
J48
J37
JP310
IC301
NC
1
VIN
2
GND
4
NC
5
VOUT
3
STBY
Q301
NC
J27
D101
4
1
3
2
Q103
Q102
NC
*Q502
@NC
*Q108
*Q653
NC
*Q104
*Q110
*Q109
*Q106
*Q111
C103
0.01u
*C104
0.01u
C2
NC
C102
680p 500V
C101
680p 500V
C302
0.1u
C303
0.1u
*C204
NC
C206
NC
*C205
NC
*C203 NC
C520
0.01u
500V
C500
0.01u
500V
C3
0.068u
*C507
68p
*C508
0.1u
*C510
0.1u
*C511
0.1u
*C509
2200p
*C512
0.01u
*C532
NC
C6
0.01u
C115
1u
C130
0.1u
*C201
NC
*C522
NC
*C502
NC
*C501
1500p
*C521
1500p
*C523
820p
*C503
820p
*C551
0.01u
*C552
0.01u
C553
330p
C554
1000p
*C116
NC
*C1 1.5
250
*C200
NC
*C300
NC
*C100
NC
*R106
330K
*R180
12
*R182
1.8k
*R181
100k
*R183
47k
*R184
39k
*R109
100k
R114
NC
R102
NC
*R105
150k
R101
NC
*R131
NC
R121
3.3M
*R204
NC
*R205
NC
*R203
NC
*R207
NC
*R206
NC
*R202
NC
*R208
NC
R622
10k
*R201
NC
*R654
NC
*R655
NC
R3
27k
R4
330k
*R6
NC
*R522
180k
*R502
180k
*R506
1.2k
*R508
3.3M
*R507
330k
*R509
27k
*R510
390k
*R511
1M
*R512
100k
*R513
1M
*R514
47k
*R515
10k
*R516
220k
R517
1M
*R532
NC
*R128
10k
*R123
270k
R125
NC
*R651
NC
*R652
NC
*R653
NC
R7
0
R8
10k
*R9 @NC
R10
10k
R104
4.7k
*R110
10k
R126
47k
R127
6.8k
*R113
2.7k
*R124
2.2k
R130
9
0
2
R
k
0
0
1
NC
*R521
NC
*R501
NC
*R505
330k
R555
3.3M
R557
3.3M
*R551
27K
*R552
27K
*R553
22K
*R554
22K
R558
10
R556
NC
R561
NC
R562
NC
*R1
2.7k
*R2
0
R120
4.7M
R122
1M
*R103
47K
*R111 470k
*R503
150k
*R523
150k
R107
680k
R108
56k
R132
470K
R301
NC
GND
*C180
10u
*C301
1000u
6.3V
*C304
1000u
6.3V
*C4
4.7u
50
*C651
NC
*C114
220u
16V
*C202
NC
*Q101
*Q105
*Q181
*Q601
*Q651
NC
*Q501
@NC
*SA101
*D11
NC
*D12
NC
*D112
25V
*D102
NC
*D106
18V
D303
NC
*D201
NC
*D654
NC
*D1
*D505
*D551
*D553
*D554
*D552
*D6
*D5
@NC
*D4
@NC
*D3
*D107
D301
*D202
NC
*D108
D105
D302
TP101
TP102
TP1
TP2
BATTP
BATTM
IC1
1
LINE1
2
GND
3
Csw
4
Ra
5
OUT
6
NC
7
Cr
8
LINE2
*IC201
NC
1
AOUT
2
A-IN
3
A+IN
4
GND
5
B+IN
6
B-IN
7
BOUT
8
V+
L201
NC
J49
NC
L651
NC
*PCB
*CN2
*CN1
*CN3-1
@NC
*CN3-2
NC
*POS101
*C5
1u 50
C
C
AGC
PULSE MUTE /
LINE SEIZER
LINE SEIZER
EX-HOOK
DETECT
DETECT
PULSE
SHAPE
SHAPE
HOOK DETECT
IN-USE
DETECT
DETECT
TONE
DETECT
DETECT
PULSE SHAPE
PATTERN
PATTERN
MESSAGE WAITING LED
(Only apply for HK)
Hi-impedance
circuit
circuit
RINGER DETECT
*R2 use
for China model.
for China model.
*C2 use
for Mexico model.
for Mexico model.
CN1
CN3-1
CN3-2
RED
WHITE
WHITE
RED
LED
2AP
2AP
LED
2AP
2AP
CONTROL
CIRCUIT
for battery
consumption
CIRCUIT
for battery
consumption
FSK / DTMF
WAKEUP CIRCUIT
2
18
3.1.8.
KX-TS881MX
[Changed from original section "11.2. Schematic Diagram (Main)"]
(1)
(2)
(3)
(3)
(4)
(5)
(5)
(6)
(7)
(8)
(9)
(7)
(8)
(9)
(10)
(11)
(11)
(12)
(13)
(14)
(14)
(15)
(16)
(17)
(18)
(18)
(19)
(20)
(20)
(21)
(22)
(23)
(24)
(25)
(25)
(26)
(27)
(27)
(28)
(29)
(30)
(31)
(32)
(33)
(34)
(35)
(36)
(37)
(38)
(39)
(40)
(41)
(41)
(42)
(43)
(44)
(43)
(44)
(45)
(46)
NC: No Components
*VR401
NC
1
2
3
*JJ401
3
2
4
1
IC601
1
RR
2
RTX
26
RXO
27
RXI
3
TXI
28
RRX
4
TXO
25
ACF
5
TLI
24
VLC
6
TLO
23
XDC
7
RLI
22
Gnd
8
RLO
21
VB
9
MCI
20
VCC
10
MCO
19
SKI
11
CP1
18
*CS
12
CP2
17
AGC
13
XDI
16
V+
14
SKG
15
SKO
*VR481
NC
1
2
3
*VR402
NC
1
2
3
Q421
JJ402
3
2
5
4
1
6
T1
1
3
4
6
2
*Q182
*Q183
*Q482
*Q602
*J22
@NC
*J24
*J10
J31
J45
J13
Q404
*Q407
*Q406
5
B1
4
E
3
B2
2
C2
1
C1
J28
J40
J46
J11
*J23
NC
SP
1
+
2
-
J17
J18
J3
J9
J19
J42
JP4
J30
*J44
NC
*Q2
NC
J16
J47
J25
J14
*J15
NC
JP10
JP11
J41
*Q488
NC
IC851
1
A0
2
A1
14
SCL
15
SDA
3
A2
16
VDD
4
IO0
13
*INT
5
IO1
12
IO7
6
IO2
11
IO6
7
IO3
10
IO5
8
VSS
9
IO4
Q401
*Q403
Q402
*Q107
Q422
*Q1
*Q426
*Q481
*Q654
NC
Q408
C107
NC
C112
NC
*C416
NC
C417
NC
*C181
NC
C418
NC
*C409
NC
*C108
NC
C402
NC
C401
0.1u
C404
0.1u
C405
0.1u
*C407
NC
C113
NC
C609
0.1u
C607
0.027u
C613
0.068u
C608
0.022u
C620
0.033u
C616
0.1u
C622
0.047u
C623
0.01u
C425
0.1u
*C428
NC
*C427
1000p
*C423
NC
*C901
4700P
*C653
NC
*C654
NC
C7
0.1u
*C105
NC
*C109
2700p
C403
0.01u
*C406
390p
*C408
0.056u
C415
0.01u
C431
0.015u
*C602
0.047u
C606
0.068u
*C605
0.022u
*C603
0.012u
C485
0.01u
*C483
2200p
*C486
2200p
*C422
2200p
*C424
1800p
*C426
100p
C429
0.1u
*C8
NC
C9
NC
C412
0.1u
C413
0.1u
*C414
0.22u
C610
1u
C611
1u
*C624
NC
*C481
3300p
C432
0.015u
*C117
NC
*C482
1000p
*C600
NC
*R116
270
*R404
33
*R112
0
*R115
15k
R401
1k
*R411
2.2k
*R185
NC
*R119
15
*R416
0
R129
NC
R606
30k
R607
68k
R605
2.2M
R608
4.7k
R609
2.7M
R603
3.3k
R604
4.7k
*R600
3.3k
*R601
10K
R610
100k
R611
18k
R612
1.8k
R613
100k
R614
47k
R615
10k
R616
4.7k
R617
2.2k
R491
120K
*R483
150k
*R484
NC
*R425
2.7M
*R422
47k
*R186
NC
*R901
10k
*R656
NC
*R657
NC
R658
NC
R660
NC
*R659
NC
R5
47k
*R117
6.8k
*R118
56k
*R402
2.2M
R403
2.7k
R406
330k
R405
12k
*R417
27k
*R410
1.8M
*R412
270
*R413
22k
*R414
470k
*R415
680
R602
2.7K
R618
12k
R487
10k
*R481
6.8k
*R485
0
R421
2.7k
*R423
6.8k
R424
220k
*R427
82
R429
10k
*R426
2.7k
*R12
NC
*R11
NC
*R13
NC
R621
82k
R620
39k
R619
18k
*R407
8.2K
*R408
3.3K
*R409
1K
R904
1.0M
*R903
2.7M
*R490
680K
R623
1M
R440
47k
R442
100k
R812
150k
R811
47k
R489
10k
*R486
6.8k
R441
100k
*R430
0
*R488
0
*R480
NC
J100
0
*L403
*L401
L412
L405
L406
L407
L408
L411
0
L424
*L425
*L423
L422
L404
L410
L409
L402
*C110
0
*C111
10u
16V
*C410
10u 16V
C411
NC
*C601
1000u
6.3V
*C621
100u
6.3V
*C430
NC
*C652
NC
*C655
NC
*C106
330u
6.3V
*C421
NC
*C617
47u 6.3V
*C619
4.7u 16V
*C618
33u 16V
*C615
22u 16V
*C612
4.7u 16V
D104
NC
*D103
5.1V
*D655
NC
D602
*D401
*D402
*D601
*D653
NC
*D404
*D403
*D801
*D652
NC
*D603
D604
TP602
TP603
TP401
TP402
TP403
TP611
TP612
TP21
MIC -
TP22
MIC +
TP25
SCL
TP24
MUSIC / DTMF
TP23
BEEP / DRING
TP19
RXMUTE
TP12
VSS
TP20
CIDW
TP16
PULSE
TP13
HOOK
TP17
TONE
TP28
VDD
TP30
RING
TP29
TIP
TP27
WAKEUP
TP14
BATTP
TP15
ACKMUTE
TP11
SDA
TP26
TXMUTE
TP18
INUSE
L421
J26
*C441
NC
*R701
1K
JA1
D605
NC
*L107
*#1AP2H
*C614
47u
6.3V
AGC
AGC
MIC +
SP -
MIC -
SP +
DTMF
MUSIC
CN2
DUMMY RING
MIC +
SP-CS (O)
Pulse Mute (O)
Ring Detect (I)
Headset Detect (I)
VOL 1 (O)
VOL 2 (O)
VOL 3 (O)
RELAY (O)
19
(1)
(2)
(3)
(3)
(4)
(5)
(5)
(6)
(7)
(8)
(9)
(7)
(8)
(9)
(10)
(11)
(11)
(12)
(13)
(14)
(14)
(15)
(16)
(17)
(18)
(18)
(19)
(20)
(20)
(21)
(22)
(23)
(24)
(25)
(25)
(26)
(27)
(27)
(28)
(29)
(30)
(31)
(32)
(33)
(34)
(35)
(36)
(37)
(38)
(39)
(40)
(41)
(41)
(42)
(43)
(44)
(43)
(44)
(45)
(46)
NC: No Components
Handset Sending
KX-TS881 SCHEMATIC DIAGRAM (Main)
Handset Receiving
Speaker Phone Sending
Speaker Phone Receiving
Ringer
SW101
1
3
2
4
6
5
FLT1
NC
1
4
2
3
JP101
*SA102
NC
2
1
*L101
*L102
JJ101
1
2
IC302
1
VIN
2
GND
4
NC
5
VOUT
3
STBY
JP301
JP302
JP304
JP303
*IC501
1
OUT1
2
IN-1
6
IN-2
7
OUT2
3
IN+1
8
VDD
4
VSS
5
IN+2
*PC101
NC
1
23
4
*JP1
*SW1
4
C
1
2
3
5
6
PC1
1
2
3
4
*Q201
@NC
*Q603
*Q652
NC
JP7
*J6
JP5
J2
J1
NC
*J7
NC
J39
*SW2
NC
4
2
1
12
11
6
9
7
5
10
3
8
J32
*J33
NC
J35
J5
J21
J8
*J34
NC
J36
J4
*J38
J20
J48
J37
JP310
W6NL5T
IC301
NC
1
VIN
2
GND
4
NC
5
VOUT
3
STBY
Q301
NC
J27
D101
4
1
3
2
Q103
Q102
NC
*Q502
@NC
*Q108
*Q653
NC
*Q104
*Q110
*Q109
NC
*Q106
*Q111
C103
0.01u
*C104
0.01u
C2
NC
C102
680p 500V
C101
680p 500V
C302
0.1u
C303
0.1u
*C204
0.047u
C206
NC
*C205
0.1u
*C203 2200p
C520
0.01u
500V
C500
0.01u
500V
C3
0.068u
*C507
68p
*C508
0.1u
*C510
0.1u
*C511
0.1u
*C509
2200p
*C512
0.01u
*C532
NC
C6
0.01u
C115
1u
C130
0.1u
*C201
@NC
*C522
NC
*C502
NC
*C501
1500p
*C521
1500p
*C523
1200p
*C503
1200p
*C551
0.1u
*C552
0.1u
C553
330p
C554
1000p
*C116
NC
*C1 1u
250
*C200
NC
*C300
NC
*C100
NC
*R106
390K
*R180
0
*R182
1.8k
*R181
NC
*R183
NC
*R184
NC
*R109
NC
R114
NC
R102
NC
*R105
180k
R101
NC
*R131
NC
R121
3.3M
*R204
390k
*R205
5.6k
*R203
10k
*R207
10k
*R206
18k
*R202
120k
*R208
4.7k
R622
10k
*R201
10k
*R654
NC
*R655
NC
R3
27k
R4
330k
*R6
12k
*R522
180k
*R502
180k
*R506
1.2k
*R508
3.3M
*R507
330k
*R509
27k
*R510
390k
*R511
1M
*R512
100k
*R513
1M
*R514
47k
*R515
10k
*R516
220k
R517
1M
*R532
NC
*R128
10k
*R123
NC
R125
NC
*R651
NC
*R652
NC
*R653
NC
R7
0
R8
10k
*R9 NC
R10
10k
R104
4.7k
*R110
NC
R126
47k
R127
6.8k
*R113
1k
*R124
NC
R130
9
0
2
R
k
0
0
1
NC
*R521
NC
*R501
NC
*R505
330k
R555
3.3M
R557
3.3M
*R551
15K
*R552
15K
*R553
10K
*R554
10K
R558
10
R556
NC
R561
NC
R562
NC
*R1
6.8k
*R2
0
R120
4.7M
R122
1M
*R103
100k
*R111 NC
*R503
150k
*R523
150k
R107
680k
R108
56k
R132
470K
R301
NC
GND
*C180
NC
*C301
1000u
6.3V
*C304
1000u
6.3V
*C4
4.7u
50
*C651
NC
*C114
220u
16V
*C202
47u 6.3v
*Q101
*Q105
*Q181
*Q601
*Q651
NC
*Q501
@NC
*SA101
*D11
30V
*D12
30V
*D112
25V
*D102
NC
*D106
18V
D303
NC
*D201
*D654
NC
*D1
*D505
*D551
*D553
*D554
*D552
*D6
W6NL5T
*D5
NC
*D4
NC
*D3
*D107
D301
*D202
*D108
D105
D302
TP101
TP102
TP1
TP2
BATTP
BATTM
IC1
1
LINE1
2
GND
3
Csw
4
Ra
5
OUT
6
NC
7
Cr
8
LINE2
*IC201
1
AOUT
2
A-IN
3
A+IN
4
GND
5
B+IN
6
B-IN
7
BOUT
8
V+
L201
NC
J49
NC
L651
NC
*PCB
*CN2
*CN1
*CN3-1
NC
*CN3-2
*POS101
*C5
1u 50
C
C
AGC
PULSE MUTE /
LINE SEIZER
LINE SEIZER
EX-HOOK
DETECT
DETECT
PULSE
SHAPE
SHAPE
HOOK DETECT
IN-USE
DETECT
DETECT
TONE
DETECT
DETECT
PULSE SHAPE
PATTERN
PATTERN
MESSAGE WAITING LED
(Only apply for HK)
Hi-impedance
circuit
circuit
RINGER DETECT
*R2 use
for China model.
for China model.
*C2 use
for Mexico model.
for Mexico model.
CN1
CN3-1
CN3-2
RED
WHITE
WHITE
RED
LED
2AP
2AP
LED
2AP
2AP
CONTROL
CIRCUIT
for battery
consumption
CIRCUIT
for battery
consumption
FSK / DTMF
WAKEUP CIRCUIT
2
4
20
3.1.9.
KX-TS889MX
[Changed from original section "11.2. Schematic Diagram (Main)"]
(8)
(1)
(2)
(3)
(3)
(4)
(5)
(5)
(6)
(7)
(7)
(9)
(10)
(11)
(11)
(12)
(13)
(14)
(14)
(15)
(16)
(17)
(18)
(18)
(19)
(20)
(20)
(21)
(22)
(23)
(24)
(25)
(25)
(26)
(27)
(27)
(28)
(29)
(30)
(31)
(32)
(33)
(34)
(35)
(36)
(37)
(38)
(39)
(40)
(41)
(41)
(42)
(43)
(44)
(43)
(44)
(45)
(46)
NC: No Components
*VR401
NC
1
2
3
*JJ401
3
2
4
1
IC601
1
RR
2
RTX
26
RXO
27
RXI
3
TXI
28
RRX
4
TXO
25
ACF
5
TLI
24
VLC
6
TLO
23
XDC
7
RLI
22
Gnd
8
RLO
21
VB
9
MCI
20
VCC
10
MCO
19
SKI
11
CP1
18
*CS
12
CP2
17
AGC
13
XDI
16
V+
14
SKG
15
SKO
*VR481
NC
1
2
3
*VR402
NC
1
2
3
Q421
JJ402
3
2
5
4
1
6
T1
1
3
4
6
2
*Q182
*Q183
*Q482
*Q602
*J22
@NC
*J24
*J10
J31
J45
J13
Q404
*Q407
*Q406
5
B1
4
E
3
B2
2
C2
1
C1
J28
J40
J46
J11
*J23
NC
SP
1
+
2
-
J17
J18
J3
J9
J19
J42
JP4
J30
*J44
*Q2
NC
J16
J47
J25
J14
*J15
JP10
JP11
J41
*Q488
NC
IC851
1
A0
2
A1
14
SCL
15
SDA
3
A2
16
VDD
4
IO0
13
*INT
5
IO1
12
IO7
6
IO2
11
IO6
7
IO3
10
IO5
8
VSS
9
IO4
Q401
*Q403
Q402
*Q107
Q422
*Q1
*Q426
*Q481
*Q654
NC
Q408
C107
NC
C112
NC
*C416
NC
C417
NC
*C181
NC
C418
NC
*C409
NC
*C108
NC
C402
NC
C401
0.1u
C404
0.1u
C405
0.1u
*C407
NC
C113
NC
C609
0.1u
C607
0.027u
C613
0.068u
C608
0.022u
C620
0.033u
C616
0.1u
C622
0.047u
C623
0.01u
C425
0.1u
*C428
NC
*C427
1000p
*C423
NC
*C901
4700P
*C653
NC
*C654
NC
C7
0.1u
*C105
0.056u
*C109
2700p
C403
0.01u
*C406
390p
*C408
5600u
C415
0.01u
C431
0.015u
*C602
0.047u
C606
0.068u
*C605
0.01u
*C603
0.012u
C485
0.01u
*C483
2200p
*C486
2200p
*C422
2200p
*C424
1800p
*C426
100p
C429
0.1u
*C8
NC
C9
NC
C412
0.1u
C413
0.1u
*C414
0.22u
C610
1u
C611
1u
*C624
NC
*C481
3300p
C432
0.015u
*C117
NC
*C482
1000p
*C600
NC
*R116
270
*R404
33
*R112
0
*R115
15k
R401
1k
*R411
2.2k
*R185
NC
*R119
15
*R416
0
R129
NC
R606
30k
R607
68k
R605
2.2M
R608
4.7k
R609
2.7M
R603
3.3k
R604
4.7k
*R600
3.3k
*R601
10K
R610
100k
R611
18k
R612
1.8k
R613
100k
R614
47k
R615
10k
R616
4.7k
R617
2.2k
R491
120K
*R483
150K
*R484
NC
*R425
2.7M
*R422
470K
*R186
NC
*R901
10k
*R656
NC
*R657
NC
R658
NC
R660
NC
*R659
NC
R5
47k
*R117
6.8k
*R118
56k
*R402
2.2M
R403
2.7k
R406
330k
R405
12k
*R417
27k
*R410
1.8M
*R412
270
*R413
22k
*R414
470k
*R415
680
R602
2.7K
R618
12k
R487
10k
*R481
6.8k
*R485
0
R421
2.7k
*R423
6.8k
R424
220k
*R427
82
R429
10k
*R426
2.7k
*R12
NC
*R11
NC
*R13
NC
R621
82k
R620
39k
R619
18k
*R407
8.2K
*R408
3.3K
*R409
1K
R904
1.0M
*R903
2.7M
*R490
680K
R623
1M
R440
47k
R442
100k
R812
150k
R811
47k
R489
10k
*R486
6.8k
R441
100k
*R430
0
*R488
0
*R480
NC
J100
0
*L403
*L401
L412
L405
L406
L407
L408
L411
0
L424
*L425
*L423
L422
L404
L410
L409
L402
*C110
0
*C111
10u
16V
*C410
10u 16V
C411
NC
*C601
1000u
6.3V
*C621
100u
6.3V
*C430
NC
*C652
NC
*C655
NC
*C106
330u
6.3V
*C421
NC
*C617
47u 6.3V
*C619
4.7u 16V
*C618
33u 16V
*C615
22u 16V
*C612
4.7u 16V
D104
NC
*D103
5.1V
*D655
NC
D602
*D401
*D402
*D601
*D653
NC
*D404
*D403
*D801
*D652
NC
*D603
D604
TP602
TP603
TP401
TP402
TP403
TP611
TP612
TP21
MIC -
TP22
MIC +
TP25
SCL
TP24
MUSIC / DTMF
TP23
BEEP / DRING
TP19
RXMUTE
TP12
VSS
TP20
CIDW
TP16
PULSE
TP13
HOOK
TP17
TONE
TP28
VDD
TP30
RING
TP29
TIP
TP27
WAKEUP
TP14
BATTP
TP15
ACKMUTE
TP11
SDA
TP26
TXMUTE
TP18
INUSE
L421
J26
*C441
NC
*R701
1K
JA1
D605
NC
*L107
*#1AP2H
*C614
47u
6.3V
AGC
AGC
MIC +
SP -
MIC -
SP +
DTMF
MUSIC
CN2
DUMMY RING
MIC +
SP-CS (O)
Pulse Mute (O)
Ring Detect (I)
Headset Detect (I)
VOL 1 (O)
VOL 2 (O)
VOL 3 (O)
RELAY (O)
Click on the first or last page to see other KX-TS2388CAB / KX-TS2388CAW / KX-TS2388RUB / KX-TS2388RUW / KX-TS2388UAB / KX-TS2388UAW service manuals if exist.