DOWNLOAD Panasonic KX-TG2560B / KX-TG2560S Service Manual ↓ Size: 2.68 MB | Pages: 69 in PDF or view online for FREE

Model
KX-TG2560B KX-TG2560S
Pages
69
Size
2.68 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / CORDLESS 2.4GHZ
File
kx-tg2560b-kx-tg2560s.pdf
Date
PREV: Panasonic KX-TG2553BXB / KX-TG2553BXS (serv.man2) Service Manual / Supplement

Panasonic KX-TG2560B / KX-TG2560S Service Manual ▷ View online

36
1
2
3
4
5
6
7
8
9
10
11
12
G
F
E
D
C
B
A
H
KX-TG2560B/KX-TG2560S
KX-TG2560B/KX-TG2560S
MEMO
37
KX-TG2560B/KX-TG2560S
BLOCK DIA
GRAM (Base Unit)
Main P
.C.Boar
d
IC701
IC401
X701
40.96MHz
SP-PHONE
IN USE/CHARGE
4
14
5
65
66
LED701
LED702
LED703
LED704
VOICE MAIL
82
CALLER-ID
67
97
24
21
22
23
26
25
20
80
68
69
19
16
6
9
24
RX-POWER
CHARGE
CHARGE-CNT.
TX-DATA
VCCPA
VCCA
POWER-DOWN
RESET
BELL
DC IN
RLY
TX-POWER
LD
CLK
PLL-DATA
EN
SQL
AF
MOD.
VR401
RX OUTPUT
ADJUSTMENT
(Line Modulation)
LPF
COMPRESER
RX-MUTE
TX-MUTE
LPF
AMP
Q105
LIMITTER
AMP
SIDE-TONE
-CIRCUIT
Auto disconnect
/in use
Q106
Q301, Q303
BELL-
DETECT
IC401
Q312
Q101, Q102
TR-RLY
EXPANDER
DATA-AMP
VR402
TX OUTPUT
ADJUSTMENT
RX Power
SS EN
TX-RST
RX-RST
RSSI2
RSSI1
TX Power
TX-DATA
RX-DATA
TX-MUTE
RX-MUTE
LD
PLL-CLK
PLL-DATA
PLL-EN
SQL
97
34
57
56
64
40
99
59
23
21
22
30
29
LINE OUT
H/S OUT
H/S IN
36
LINE IN
38
35
45
60
4
1
3
2
D101
Q103
1
2
TIP
RING
TEL-JACK
1
2
DC9V+
GND
DC-JACK
1
2
+
3
-
C
CHARGE-CONTACT
6V
REGULATOR
IC301
Q902
4.2V
REGULATOR
+   ~
-   ~
ID BUFFER
Q313
CHARGE
DETECT
Q311
CHARGE
CONTROL
2
13
RX-DATA
5
SS-RST
17
RSSI2
9
RSSI1
7
RX-RST
3
TX-RST
18
SS EN
20
15
4
6
10
8
16
14
D304
D902
RESET
Q751, Q752
Pow B
22, 24
37
D305
Power
Down
38
KX-TG2560B/KX-TG2560S
NEW CIRCUIT OPERATION (Base Unit)
1. SP-PHONE RX Circuit
Circuit Operation:
Telephone Line 
→
 C721 
→
 R724 
→
 C720 
→
 R723 
→
 pin 38 of IC703 
→
 pins 32 and 33 of IC701 
→
 Speaker
2. SP-PHONE TX Circuit
Circuit Operation:
MIC 
→
 C715 
→
 C714 
→
 C733 
→
 R755 
→
 pin 47 of IC701 
→
 pin 36 of IC701 
→
 R718 
→
 C710 
→
 C709 
→
 Q105
→
 Telephone Line
Circuit Diagram
C108
C110
T
R
R717
R723
R724
R116
R118
R115
D106
C711
C720
32
33
38
39
IC701
SP
R113
R125
C111
Q105
C113
R117
R114
R112
C107
C106
C721
Circuit Diagram
C108
C713
R712
R112
T
R
R116
R118
R115
36
37
47
48
IC701
R113
C111
Q105
C113
R117
R114
R719
R714
R755
C716
C107
C106
C709
C715
C714
C732
C733
C710
R718
R715
R740
MIC
C731
C110
D106
R125
39
KX-TG2560B/KX-TG2560S
4. Power Supply Circuit
Function:
Power from the AC adaptor passes through a regulating block consisting of IC301.
Circuit Operation:
IC301 is a regulated power supply. The voltage at point A is regulated to 6 V by IC301.
The voltage at point B is dropped by D901, D304~D305, D701 and D710 to 4.6 V.
The voltage at point C is dropped by D303, D900 to 4.1 V.
3. Auto Disconnect Circuit
Function:
This circuit is used to detect the fact that another telephone connected to the same line is OFF-HOOK while the unit is in a
receiving status or OGM transmitting status.
Circuit Operation:
The telephoneline voltage is mositured by pin40 of IC701, the presence/absence of a parallel connection is
determined when the voltage changes by 0.2V or more.
When the set detects the parallel-connected telephone is OFF HOOK status, the line is disconnected.
Circuit Diagram
Circuit Diagram
1
2
L101
C103
~
~
D101
C104
R102
R108
RLY
DCIN
USE-CTL
Q103
Q101
Q102
R124
R105
R104
R101
C112
L102
CN101
SA101
99
40
15
P101
R109
R103
IC701
DSP
D901
Q902
IC301
DC-JACK
12, 75, 93 pin
34 pin
B
52 pin
B
C
51 pin
B
37 pin
B
Pow B
22
Pow B
24
A
D710
D304
D303 D900
D701
D305
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