DOWNLOAD Panasonic KX-T7730UA Service Manual ↓ Size: 1.29 MB | Pages: 37 in PDF or view online for FREE

Model
KX-T7730UA
Pages
37
Size
1.29 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / PROPRIETARY TELEPHONE
File
kx-t7730ua.pdf
Date
PREV: Panasonic KX-T7730SP / KX-T7730RU / KX-T7730AL / KX-T7730X / KX-T7730RUPP (serv.man2) Service Manual / Supplement

Panasonic KX-T7730UA Service Manual ▷ View online

5. Remove 5 Screws (A).
6. Remove the Main Board from the Top Cabinet.
7. Remove the Cable from the Main Board.
8. Remove the LCD Holder by sliding the Hook in the direction of the
arrow from the Main Board.
9
KX-T7730UA
7 IC DATA
Pin No.
Terminal Name
I/O Function
I/O Setting
Description
1
RE0
I
I
LCD linage H:3line Model L:Other
2
TEST
I
-
Vcc Connection
3
OSC1
I
-
4MHz
4
OSC2
O
-
4MHz
5
RESET
I
-
6
X1
I
-
Not used Vcc Connection
7
X2
O
-
Open
8
GND
-
-
9
D0
I/O
O
HS SM mute
10
D1
I/O
O
HF MM mute
11
D2
I/O
O( I )
HF SM mute(This is also model code.)
12
D3
I/O
O
HF Relay
13
D4
I/O
O
HS power on
14
D5
I/O
O
HF power on (CS)
15
D9
I/O
I
HOLD Key L:Key press
16
D10
I/O
O
DO
17
D11
I/O
O
DCLR
18
D12
I
I
DI
19
D13
I
I
DI_INT
20
R00
I/O
I
KEY-IN0
21
R01
I/O
I
KEY-IN1
22
R02
I/O
I
KEY-IN2
23
R03
I/O
I
KEY-IN3
24
R10
I/O
I
KEY-IN4
25
R11
I/O
I
KEY-IN5
26
R12
I/O
I
KEY-IN6
27
R13
I/O
I
Hook-SW
28
R20
I/O
O
KEY/LED-COM0
29
R21
I/O
O
KEY/LED-COM1
30
R22
I/O
O
KEY/LED-COM2
31
R23
I/O
O
KEY/LED-COM3
32
R30
I/O
I/O
KEY-COM4
33
R33
I/O
O( I )
LCD_Contrast1(This is also model code.)
34
R32
I/O
O
*LCD_Contrast0
35
R31
I/O
I/O
KEY-COM5
36
R40
I/O
I
Ring vol off
37
R41
I/O
O
LCD_CLK
38
R42
I/O
O( I )
LCD_STB/(Model Code)
39
R43
I/O
O
LCD_DO
40
R60
I/O
O
LED0
41
R61
I/O
O
LED1
10
KX-T7730UA
Pin No.
Terminal Name
I/O Function
I/O Setting
Description
42
R62
I/O
O
LED2
43
R63
I/O
O
LED3
44
R70
I/O
O
LED4
45
R71
I/O
O
LED5
46
R72
I/O
O
LED6
47
R73
I/O
O
LED7
48
R80
I/O
O
HF SP vol 1
49
R81
I/O
O
HF SP vol 2
50
R82
I/O
O
HF SP vol 3
51
R83
I/O
O
HF SP vol 4
52
R90
I/O
O
Tone cont 1
53
R91
I/O
O
Tone cont 2
54
R92
I/O
O
Tone cont 3
55
R93
I/O
O
Tone cont 4
56
RA0
I/O
O
HS SP vol 1
57
RA1
I/O
O
HS SP vol 2
58
SEL
I
I
A Four-minute Cycle Vcc Connection
59
VCC
-
-
60
TONC
O
O
DTMF Column
61
TONR
O
O
DTMF Row
62
VTref
-
-
DTMF Standard Power
63
RD0
I
I
Head Set Detention
64
RD1
I
I
TONE-DET
11
KX-T7730UA
8 BLOCK DIAGRAM
USD PRIVING
CIRCUIT
(Q105~108)
H
L
T
R
T2
POWER
REGULATOR
(IC7)
SIGNAL
TRANSMITTING
CIRCUIT(Q101)
SIGNAL
RECEIVING
CIRCUIT(Q102)
FF
(IC2)
RESET IC
(IC9)
Vcc
CPU
(IC1)
X1
DRIVING
CIRCUIT
(Q103,Q104)
LED
LCD
KEY
LCD Module
RINGER
DTMF
SPEAKER
MIC
HEADSET
HANDSET
SP-PHONE
(IC3)
Handset Amp
(Q5,Q8)
Pre Amp
(Q4)
HYBRID
CIRCUIT
(Q3)
DIODE
BRIDGE
(D1)
DIODE
BRIDGE
(D2)
T1
KX-T7730UA  MAIN BOARD
KX
-T
7730
UA
12
Page of 37
Display

Click on the first or last page to see other KX-T7730UA service manuals if exist.

RANDOM: