Panasonic KX-T7665UA Service Manual ▷ View online
13
KX-T7665UA
PCM TX DATA
PCM RX DATA
HANDSET RX
HANDSET TX
SP PHONE RX
SP PHONE TX
JK3
1
MIC
2
3
SP
4
CN1
1
2
CN2
1
2
C516
C517
A3V
A3V
C518
C520
C519
C513
R509
C511
R510
C508
C507
R507
R502
C502
R501
R500
A3V
C526
AG
C500
L51
L52
C510
R508
R504
C504
IC4
HANDT1
20
MIC2
16
DX
8
BCLK
9
MIC3
18
RAI
27
SCLK
12
HANDT2
21
SPON
3
HANDI
25
D
A
OUT
24
PLLCAP
1
VREF
22
RA
GND
23
HANDT3
19
A
VDD
15
A
VSS
2
D
VDD
5
D
VSS
6
4
SPOP
DR
10
FS
7
HANDR
26
T
ONE
30
MIC1
17
CSN
13
D
ATA
11
RA
O
28
SPI
29
TEST
14
C515
C514
R512
R511
C506
C524
R505
R506
A3V
AG
AG
C521
IC3
FS
2
TIN
4
RIN
3
VDD
7
VSS
8
T
OUT
6
R
OUT
5
DA
T
A
11
SCLK
13
CSN
14
TEST1
15
RxON
9
TxON
10
RST
16
TEST2
12
BCLK
1
C522
D3V
R515
D3V
C525
R503
AG
Q51
E
C
B
AG
AG
NC
C503
MIC1
SP1
AG
1
SPP
SPN
MIC2
AG
2
R406
D3V
R518
R519
R520
R521
DG
R516
DG
R517
DG
DG
DG
C523
DG
R514
R513
AG
AG
AG
C501
C512
C509
IC2
OSR
20
OSX
21
OEPO
22
OCK
25
OSYNC
26
A3V
R526
R525
R524
D3V
Q52
E
C
B
R522
C527
R523
R527
AG
SCLK
SCLK
DA
T
A
D
ATA
CSN
SP_CSN
SP
MIC
TO HANDSET
ANALOG CIRCUIT
14
KX-T7665UA
5 Location of Controls and Components
15
KX-T7665UA
6 Installation Instructions
6.1.
Connection
Caution:
The availability of D-XDP function depends on the software version of the connected Business Telephone System.
Consult your dealer for more details about D-XDP.
16
KX-T7665UA
7 Troubleshooting Guide
7.1.
No Operation
Note:
Refer to (1)~(4) of Waveform (P.26) for waveform.
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