Panasonic KX-TS208 / KX-TS208LX / KX-TS2368RU / KX-T2378MX Service Manual / Supplement ▷ View online
7
3.1.4.
KX-T2378MXW (Suffix Code: L or later)
[Changed from original section “18 SCHEMATIC DIAGRAM (BASE UNIT)”]
S
P Phone
Circuit
6.2V
Ringer Circuit
Hold
Circuit
Speaker Phone Outgoing Signal
Speaker Phone Incoming Signal
Handset & Headset Incoming Signal
Handset & Headset Outgoing Signal
In Use Detector Circuit
6.2V
4.5V
3.9V
4.5V
3.9V
Tone
Detect
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
( )
)
(
( )
( )
( )
( )
( )
( )
( )
( )
+-
-+
1
VR401
NC
R558
47K
C426
K0.1
Q551
C358
K0.01
R444
10K
R425
3.3M
TP402
Q506
J19
0
R574
10M
C410
NC
VR402
NC
C436
K2200p
J3
0
Q405
R567
27K
J47
0
C120
500V680P
Q109
C5
50V4.7
R601
8.2K
D601
J29
0
PIN8
R555
15K
R33
10K
CN101
(L1/L2)
4T
ip
(L
in
e
2
)
3T
ip
(L
in
e
1
)
2R
in
g
(L
in
e
1
)
1R
in
g
(L
in
e
2
)
SA101
R11
47K
J39
0
R576
3.3M
R518
4.7M
R121
10K
R434
2.2M
SW510
2
1
3
J14
0
C624
K0.01
J17
0
R554
4.7K
J11
0
C609
K0.1
D2
36V
Q1
R109
2.2K
C115
NC
D556
18V
R612
4.7K
R483
2.7M
C354
K470P
R412
6.8K
J12
0
PIN26
R427
120
C35
50V4.7
D353
R105
1.5M
R608
6
.8K
R124
15
R103
100K
C356
K0.001
C114
10V47
SW1
4
1
2
3
PIN27
R13
10K
PC1
1
2
3
4
D509
C21
250v1
C556
K0.01
Q424
R436
680
Q423
PIN20
D555
PIN12
C4
K6800p
R664
470K
Q426
Q508
R551
100K
J49
0
R125
10K
PIN18
R354
470
D21
2
14
3
C608
K0.015
SW510
11
12
13
SW510
11
12
10
PIN7
C103
K0.01
J41
0
R443
100K
R506
15K
C425
K0.1
SW130
2
1
3
R615
10K
Q603
D22
36V
BATTN
0
C616
K0.1
R3
330K
J61
0
J85
0
R613
100K
R553
100K
R25
0
R503
100K
Q507
C601
6.3V1000
R618
2.2K
R604
4.7K
SP
R442
100K
R519
100
R564
4.7K
R521
3.3M
D113
VR601NC
Q303
TP401
C503
50V2.2
D401
R406
3.3M
R22
12K
C24
K6800p
Q103
C421
K0.033
TP603
C620
K0.012
R560
470K
R404
18K
Q558
SW510
8
9
7
L401
0
C613
K0.068
R565
2.7K
C600
0
C630
Z1.0
R123
33
R424
NC
J72
0
R131
NC
R667
12
R605
2.2M
R352
4.7K
R429
0
R600
4.7K
C109
K0.01
C621
330u6.3V
R507
15K
Q554
R501
100K
R126
3.9M
C618
6.3V33
R561
4.7K
J5
0
R409
22K
D103
SW130
8
9
7
SW120
2
1
3
D102
SW21
4
1
2
3
R514
4.7K
J71
0
R408
560
R557
15K
SW110
11
12
10
R6
100K
Q503
C617
6.3V100
R509
10K
C435
K0.1
C557
50V0.33
TP601
C355
K2200
PIN2
R666
4.7M
PIN24
C554
16V100
D354
D502
C111
K0.01
C553
50V2.2
R120
1.5K
T351
1
2
3
4
5
6
7
8
9
TP102
C552
6.3V47
C430
NC/1608C
D505
Q556
C404
K0.1
R140
0
R482
1.5M
D561
J55
0
PIN15
Q101
R423
0
R563
33K
R665
2.2M
C439
K1500p
J23
0
R568
4.7M
SW120
8
9
7
R27
33K
J405
NC
J10
0
J82
0
J45
0
Q604
J53
0
R407
2.2K
R108
4.7K
SW110
8
9
7
PIN16
J101
0
C352
16V10
R614
47K
C555
16V10
C116
NC
R410
470K
Q351
C353
K560P
C607 K0.027
TP103
R12
NC
J52
0
J83
0
R428
5.6K
PIN22
CN102
L2/DATA
1
T
ip(Line2)
2
R
ing(Line2)
D352
TP403
R353220K
R512
33
C357
50V1
R511
4.7K
TP602
C405
K0.1
C121
500V680P
R504
4.7K
C504
16V100
J1
0
SW120
11
12
10
D506
18V
R411
680
R130
820
D3
PIN14
D557
R619
22K
IC1
1
VDD
2
CONT
3
Lfre
4
Lfre
5
VSS
6
Hfre
7
Hfre
8
OUT
R508
47K
R401
33K
D504
3.6V
C23
50V0.22
Q504
R104
47K
PIN19
R426
2.7K
R606
30K
D351
Q21
R437
15K
C22
50V4.7
J18
0
PIN1
J46
0
J74
0
R570
10M
Q406
D308
IC22
1
VDD
2
CONT
3
Lfre
4
Lfre
5
VSS
6
Hf
re
7
Hfre
8
OUT
CN403
@pinN
NC
@pinN
NC
1
AGND
2
MIC
3
NC
4
SPTX-MUTE
5
HOOK
6
TR
7
SPVOL
8
RX-MUTE
9
VOL1
10
VOL2
11
VOL3
12
NC
13
SP-CS
14
VDD
15
GND
16
BATT+
17
BEEP
18
DTMF
19
TX-MUTE
20
PULSE
21
HEADSET
22
TONE
23
LINE1
24
LINE1(R)
25
LINE1(G)
26
LINE2
27
LINE2(R)
28
LINE2(G)
C106
16V10
R516
10K
R435
1.8K
D560
3.6V
J84
0
R127
3.9K
CN402
HANDSET
1M
IC
(+
)
2M
IC
(-
)
3S
P
(+
)
4S
P
(-
)
J64
0
J9
0
J401
NC
J36
0
R552
2.7K
J21
0
C351
16V10
C481
K0.01
NC/1608R
R9
PIN25
R101
56K
R439
15K
D23
PCB
R559
10K
C112
K0.1
Q552
C501
K0.01
R31
47K
T21
1
2
5
4
3
D309
J54
0
C408
K0.022
C415
K0.01
D1
2
14
3
C505
16V10
J35
0
PIN11
R556
15K
SW120
5
4
6
R26
82K
R430
47K
PIN13
R28
10K
C614
6.3V47
Q555
R403
47K
R668
220K
C611
50V1
R577
100K
C2
50V4.7
D554
3.6V
C124
500V680P
C424
K0.018
J62
0
TP104
SW510
5
4
6
R603
3.3K
C401
NC
J48
0
R571
3.3M
R128
47
Q559
TP611
C407
NC
C3
50V0.22
R510
470K
J33
0
TP612
J32
0
TP101
D114
J15
0
J2
0
C117
NC/1608C
SW130
11
12
10
R481
470K
R118
1.5K
J44
0
C602
K0.047
Q108
J13
0
C625
16V10
Q102
J73
0
BATTP
0
C113
K0.033
Q492
R562
33
J38
0
Q501
C626
K0.01
R421
1.8K
J51
0
C440
K3300p
R8
10K
PIN21
R445
10K
PIN4
R23
330K
T1
1
2
5
4
3
Q553
R440
47K
PIN5
C622
K0.033
R611
18K
J16
0
R129
330K
C438
K0.1
C107
10V330
PIN28
R520
8.2M
R515
2.7K
R575
3.3M
R610
100K
C123
500V680P
J102
0
DCM
R351
220K
C606
K0.068
R7
33K
IC601
1
RR
2
ATX
3
TXI
4
TXO
5
TLI
6
TLO
7
RLI
8
RLO
9
MCI
10
MCO
11
CP1
12
CP2
13
XD1
14
SKG
15
SKO
16
V+
17
AGC
18
CS
19
SKI
20
VCC
21
VB
22
V-
23
XDC
24
VLC
25
ACF
26
RXO
27
RXI
28
RAX
NC/1608R
R616
D104
NC
C422
K0.022
J26
0
Q104
NC
Q493
R422
15K
R505
15K
D503
C506
K0.01
R573
330K
J28
0
D508
C406
180P
R517
27K
R102
100K
R617
4.7K
C615
6.3V22
D558
Q502
R523
330K
R522
3.3M
DCP
R513
33K
Q505
R21
6.8K
SW110
11
12
10
PIN17
Q352
R607
68K
R502
2.7K
C423
K6800
Q602
R32
NC
C603
K0.033
PIN9
PC22
2
14
3
SW110
5
4
6
PIN10
C429
NC/1608C
J24
0
D559
J81
0
PC21
1
2
3
4
C105
16V10
R566
10K
PIN23
R405
33K
J37
0
C306
K0.1
C359
6.3V47
SA102
C502
6.3V47
SW101
HOOK
R441
100K
CN401
Headset Jack
1
5
4
3
2
NC/1608R
R29
J27
0
R432
22K
D552
C1
250v1
C605
K6800P
R602
2.7K
R609
3.3M
R5
0
Q401
R1
6.8K
C551
K0.01
J31
0
Q491
Q557
Q421
C507
50V0.33
D111
2
13
4
D507
D553
PIN6
C108
K0.1
Q560
R2
12K
R569
100
PC2
2
14
3
D106
6.2V
D110
2
13
4
J34
0
J43
0
D355
D602
R320
10K
D202
R206
18K
R207
10K
IC201
1
2
3
4
GND
5
6
7
8V
C
C
R205
5.6K
C201
K0.047
R204
390K
C204
K0.047
C205
K0.22
C203
K2200
R208
4.7K
C202
6.3V47
R202
120K
R203
1
0K
R201
10K
Q201
POS101
POS102
D402
D203
D204
C437
1.5M
C441
0.1uF
Q204
R106
91K
D105
25V
R10
0
C610
1
u
C619
4.7u
C612
4.7u
C414
10u
LINE2
HOLD
LINE1
CONF
CONF
LINE1
LINE2
HOLD
CONF
LINE2
LINE1
KX-T2378MXW SCHEMATIC DIAGRAM (Main)
NC: No Components
8
Memo
9
3.2.
CIRCUIT BOARD (BASE UNIT)
3.2.1.
Component View (Main)(FOR P.C.BOARD PART NO. PQUP11114WA-PN)
[Changed from original section “23.1. Component View (Main)”] (for KX-TS208LXW and KX-TS2368RUW)
[Changed from original section “19.1 Component View (Main)”] (for KX-T2378MXW)
[Add into original section “6.1 Component View (Main)”] (for KX-TS208W)
[Changed from original section “19.1 Component View (Main)”] (for KX-T2378MXW)
[Add into original section “6.1 Component View (Main)”] (for KX-TS208W)
KX-TS208/TS208LX/TS2368RU/T2378MX CIRCUIT BOARD (Component View (Main))
C202
Q104
Q108
J81
Q102
Q103
C612
D106
C601
T351
CN403
C555
Q555
E C B
J54
J26
J18
J9
J55
J36
J53
J64
J48
D113
D114
C351
C359
C357
C625
2
1
27
28
J37
J46
C352
J27
J10
J11
C505
D504
Q505
Q552
E C B
E C B
B C E
J28
D554
C552
C553
C554
R562
R570
D560
D556
J45
1
J31
C107
R128
R609
J33
J62
J51
D104
C106
R124
J61
J71
J17
D309
C618
J32
VR401
VR601
VR402
IC601
C621
C619
C414
H/S_JACK
J19
J23
R407
J34
J72
J24
J41
J74
J43
J44
J5
J52
C610
C615
C401
J38
R
B
Y
G
R101
J101
J3
15
28
1
14
B C E
B C E
B C E
E C B
E C B
E C B
E C B
R102
R108
C105
C114
R1
J39
PC21
J47
J13
Q551
R512
R574
J14
J21
SW101
D602
SW130
SW110
SW120
R573
J29
J49
J35
J73
C507
R523
SW510
PQUP11114W
C557
C614
C617
BATTN
Q101
C21
C121
C120
J102
R21
C124
SA102
POS102
R109
J16
C5
R140
POS101
1
0
1
N
C
2
0
1
N
C
1
2
T
1
T
R25
ICT
F
CT
C35
R505
BATTP
SW21
SW1
J15
C3
C1
D23
C23
J12
R520
C2
D2
C22
D22
D506
Q502
C502
C504
C503
Q501
C123
SA101
D3
D111
D110
PC1
J2
CN401
A
10
3.2.2.
Flow Solder Side View (Main)(FOR P.C.BOARD PART NO. PQUP11114WA-PN)
[Changed from original section “23.2. Flow Solder Side View (Main)”] (for KX-TS208LXW and KX-TS2368RUW)
[Changed from original section “19.2 Flow Solder Side View (Main)”] (for KX-T2378MXW)
[Add into original section “6.2 Flow Solder Side View (Main)”] (for KX-TS208W)
[Changed from original section “19.2 Flow Solder Side View (Main)”] (for KX-T2378MXW)
[Add into original section “6.2 Flow Solder Side View (Main)”] (for KX-TS208W)
KX-TS208/TS208LX/TS2368RU/T2378MX CIRCUIT BOARD (Flow Solder Side View (Main))
SH
A
R32
R29
Q21
Q1
PC22
PC2
PC21
PC1
R31
5
5
4
4
1
1
1
1
8
8
R28
R26
R502
R22
C4
R501
R504
R508
R509
R513
R8
R9
Q503
Q504
R51
1
D502
R510
R519
R551
R555
R553
R557
C551
R554
R556
R567
R569
R565
R566
R576
R560
R571
C556
R575
R564
R561
R568
R517
R515
R503
C501
R507
R506
D503
D505
R518
R521
C506
R522
R352
C356
C358
R354
C354
C353
C1
17
C
111
R127
R667
DCM
C61
1
R601
R603
C602
R129
R600
C607
R605
C609
C1
12
R351
R353
C624
R618
TP601
C622
C626
R664
R665
R577
R668
J85
C426
R436
R432
R430
C425
C424
R428
R426
R434
R403
R412
C429
R423
C438
R439
C423
R427
R424
R425
R404
C430
C441
R441
C439
C436
C440
R444
R445
R483
R482
C481
R481
R437
C435
R435
R443
R666
C355
R619
Q506
Q507
Q508
Q560
Q558
Q604
Q491
Q493
Q492
Q423
Q603
Q424
Q405
Q406
Q426
R440
R442
C437
C415
C630
A
SP
SP-PHONE
MIC
Q401
Q421
Q352
Q351
Q602
D507
D552
D557
DCP
D558
R559
R558
R563
Q553
Q554
Q556
Q557
Q559
R552
D553
D555
D559
D561
J83
R514
R516
D508
IC22
IC1
C24
R23
R6
D1
D21
R7
TP101
TP104
TP102
TP103
R2
R5
R3
C205
R208
D203
D202
C201
R104
R1
18
C109
R320
R614
R610
R429
C422
C616
TP612
TP61
1
TP403
TP402
H/S
TP401
R422
C620
C421
C613
R604
R608
C608
R613
R617
C603
R602
R616
C606
C605
R607
R61
1
R606
C600
R406
C407
C404
C405
C406
R409
C408
R410
R421
C410
R405
R408
R401
R615
R41
1
R612
R120
D308
D105
J84
D102
D103
D351
D352
D354
D353
C1
16
C1
13
R130
R131
C1
15
R121
R123
R125
R126
Q303
Q109
J82
C108
C306
D355
D601
D204
D402
D401
R103
C103
J401
J405
R105
R203
R204
C203
C204
R205
R206
L401
R202
R207
R201
4
1
5
8
R27
D509
R33
R12
R13
R1
1
Q201
IC201
PQUP1
11
14Y
PbF
600
Ω
AF
Voltmeter
Oscillator
Line 1
Simulator
48V
40mA
TP101
TP102
TP103
TP104
Line 2
TP602
TP603
DCM GND
TP612
SP-PHONE TX mode (short)
TP611
MIC-
SP-
MIC+
1μF
150
Ω
+ -
AF
Voltmeter
Oscillator
32
Ω
SP-PHONE+
SP-PHONE-
AF
Voltmeter
TP601 SP-PHONE MIC
1
μF
- +
Oscillator
DCP
Power Supply
DC4.5V
Click on the first or last page to see other KX-TS208 / KX-TS208LX / KX-TS2368RU / KX-T2378MX service manuals if exist.