DOWNLOAD Panasonic KX-TG6461RUT / KX-TGA641RUT Service Manual ↓ Size: 3.17 MB | Pages: 96 in PDF or view online for FREE

Model
KX-TG6461RUT KX-TGA641RUT
Pages
96
Size
3.17 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg6461rut-kx-tga641rut.pdf
Date

Panasonic KX-TG6461RUT / KX-TGA641RUT Service Manual ▷ View online

5
KX-TG6461RUT/KX-TGA641RUT
2.2.1.
Suggested PbF Solder
There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper
(Sn+Ag+Cu), you can also use Tin and Copper (Sn+Cu), or Tin, Zinc, and Bismuth (Sn+Zn+Bi). Please check the manufac-
turer’s specific instructions for the melting points of their products and any precautions for using their product with other materi-
als. 
The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3 mm, 0.6 mm and 1.0 mm.
2.3.
Discarding of P. C. Board
When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.
6
KX-TG6461RUT/KX-TGA641RUT
3 Specifications
Note:
• Design and specifications are subject to change without notice.
Note for Service:
• Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition.
• Analog telephone connection: Telephone Line
7
KX-TG6461RUT/KX-TGA641RUT
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
T
E
L Line
D101
Q
111/Q115
RLY
T
ra
n
si
st
o
r
RLY
T
ra
n
si
st
o
r
RLY
T
ra
n
si
st
o
r
RLY
T
ra
n
si
st
o
r
-
+
~
~
-
+
~
~
Hook
 
SW
Hook
_C
T
R
L
Puls
e
Q
112/Q114
Q
131
LSRp
Side
T
one 
Ci
rcu
it
 
TP
1
0
TP
9
MI
C
h
P3_6
P2_1
Fil
te
r
-
+
~
~
-
+
~
~
Ringer
IC
CIDINp
CIDINn
R
ingi
ng
Fil
te
r
D161
IC101
IC301
IC304
IC801
RF PA
3.75V
3.5V
Q
351
1.8V
2.5V
IC303
VDD/AVD
L
D
O_
CT
RL
RF_SUPPLY
4.3V
D138
BAT
Key
 sw
itch 
Ma
tr
ix
 
P5_5-0
P1_5-2
,P2_
0
LED
LED1-4
Q
6
01-Q
604
LC
D
 M
odule
Serial
Flas
h m
e
m
o
ry
Serial
EEPRO
M
TA
M
 I
C
IC201
X
511
X
tal
(10.368Mhz)
XT
AL1
XT
AL2
IC501
Hands
et
Spea
k
e
r
Mi
c
LCD_CS,LCD_CD,L
CD_RESET
Q6
0
5
-Q6
0
7
SPI_CLK,SPI_DO
CP_
VOUT
1
3.0V
FLASH_CSn
SPI_DI
TA
M
_
W
P
Q
541
IC541
2.5V
SCL2,SDA2
EEP_
W
P
SCL2,SDA2
P5_6
SPI_DI
P0_4
P5_7
SPI_CLK,SPI_DO
KEY
5-0
RO
W
4
-0
G
P
IO
 3-0
IC561
P4_7-5
BB
IC
BXT
AL
CL
K
CLK(10.2
68M
Hz
)
T
A
M
_
RESE
T
RST
2.5V
1.8V
2.5V
P3_0
PC
M
_
CLK,DI,DO,FSC
PC
M
_
CLK,DI,DO,FSC
PC
M
_
CLK,D
I,DO,FSC
VDDAVD.
VDDIO
VDD
VDD
LC
D
 bac
kl
ight
3.5V_PD
3.5V_PD
VCC
SPI2_CLK,DI,DO
,EN
SPI2_CLK,DI,DO
,EN
IC
IC301
3.5V
Q
351
2.5V
IC303
3.5V_PD
IC
IC301
3.5V
Q
351
2.5V
IC303
Q
341
3.5V_PD
PC102
Ringer
DET
Q
331
PO
W
E
R_F
AIL
INT
1
DC
6.5V
Q
162
Q
608
3.2V_PD
3.2V_PD
VDDPA
22
24
29
85
27
26
30
30,20
54,89
19
12,91
42,45,50
10
9
61
82,7
5-71
57-60
,86
45-43
65,6
4
52
66
63
84
67,6
8
83
56
41
81-78
17-14
RX
o
n
RX
n
RX
p
VDD-PADRV
Tx
on
PSEL
Pon
TX
n
TX
p
BPF
ANT
1
ANT
2
ANT
1
ANT
2
D
A
801
D
A
802
6
5
3
2
95
97
98
93
94
100
92
RFP0
RFP1
RF_RX
n
RF_RX
p
VDD-PADR
RF_T
X
p
RF_T
X
n
RFP4
RFP3
RFP2
RFP0n
VCC
KX-TG6461 BLOCK DIAGRAM (BASE UNIT)
8
KX-TG6461RUT/KX-TGA641RUT
4.2.
Circuit Operation (Base Unit)
4.2.1.
Outline
Base unit consists of the following ICs as shown in Block Diagram (Base Unit) (P.7).
• DECT BBIC (Base Band IC): IC501
- Handling all the audio, signal and data processing needed in a US DECT base unit
- Controlling the US DECT specific physical layer and radio section (Burst Module Controller section)
- ADPCM code filter for speech encoding and speech decoding (DSP section)
- Echo-cancellation and Echo-suppression (DSP section)
- Any tones (tone, sidetone, ringing tone, etc.) generation (DSP section)
- DTMF receiver (DSP section)
- Clock Generation for RF Module
- ADC, DAC, timer, and power control circuitry
- All interfaces (ex: RF module, EEPROM, LED, Analog Front End, etc.)
- RF Tranceiver (LNA Mixer IF Filter, Modulator/Demodulator, PLL, Vco)
• EEPROM: IC561
- Temporary operating parameters (for RF, etc.)
• FLASH MEMORY: IC541
- Voice Prompt (TAM) D/L Area
- ICM/OGM/MEMO Recording Area
• TAM Companion: IC201
- Voice data compression and decompression
- Speaker Amp
• Additionally,
- Power Supply Circuit (+4.0 V, +3.3 V, +2.5 V, +1.8 V output)
- Crystal Circuit (10.368 MHz)
- Telephone Line Interface Circuit
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