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Model
KX-TG8095RUJ KX-TG8095RUS KX-TG8095RUT KX-TGA807RUJ KX-TGA807RUS KX-TGA807RUT KX-TGA809RUS KX-TGA809RUT
Pages
69
Size
2.65 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / TELEPHONE EQUIPMENT
File
kx-tg8095ruj-kx-tg8095rus-kx-tg8095rut-kx-tga807ru.pdf
Date

Panasonic KX-TG8095RUJ / KX-TG8095RUS / KX-TG8095RUT / KX-TGA807RUJ / KX-TGA807RUS / KX-TGA807RUT / KX-TGA809RUS / KX-TGA809RUT Service Manual ▷ View online

5
KX-TG8095RUJ/RUS/RUT/KX-TGA807RUJ/RUS/RUT/KX-TGA809RUS/RUT
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 manufacturer’s
specific instructions for the melting points of their products and any precautions for using their product with other materials. 
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.
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KX-TG8095RUJ/RUS/RUT/KX-TGA807RUJ/RUS/RUT/KX-TGA809RUS/RUT
3 Specifications
Note:
• Specifications are subject to change.
Note for Service:
• Operation range: Up to 300 m outdoors, Up to 50 m indoors, depending on the condition.
• Analog telephone connection: Telephone Line
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KX-TG8095RUJ/RUS/RUT/KX-TGA807RUJ/RUS/RUT/KX-TGA809RUS/RUT
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
ANT
RF Module
EEPR
OM
U3
U4
COB2
Cr
ystal
3.3 V
3.3 V
40
6
18
4
20
Q604, Q17
R-D
A
T
A
T
-D
ATA
D1~ D4, Q7
45
22, 23
67, 68
6, 58, 69, 81
13.824 MHz
Linear
Regulator
U1
Power
DC6V
BBIC
Speech
Network
TEL Line
Interface
Tel Line
KX-TG8095 BLOCK DIA
GRAM 
(BASE UNIT)
72~76
ITAD
U6
Key
LED
1~3, 87, 88
SPK Amp
U2
Speaker
25, 26
81, 4
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KX-TG8095RUJ/RUS/RUT/KX-TGA807RUJ/RUS/RUT/KX-TGA809RUS/RUT
4.2.
Circuit Operation (Base Unit)
The base unit consists of base band controller, speech network, tel-line interface, EEPROM, RF module, linear regulator, crys-
tal and so on. Refer to Block Diagram (Base Unit) (P.7).
4.2.1.
BBIC (U4)
BBIC (U4) controls all functions of the base unit. This device includes all control circuits of the base unit for RF module, tel-line
interface, ADPCM codec, series regulator and so on. 
4.2.2.
Power Supply
The power supply is generated by voltage regulator (U1). 
U1 generates DC 3.3V voltage from DC 6V voltage of adaptor output. DC 3.3V is used for RF module & I/O port, DC 2.5V &
DC1.8V are used for the base band controller and the circumference circuits.
4.2.3.
Speech Network 
The TR circuit is used for speech network. The function of this connects tel-line interface and the base band controller.
4.2.4.
TEL Line Interface
The function of this connects tel-line and speech network. Also, the tel-line interface includes the ring detect circuit, caller-ID cir-
cuit.
4.2.5.
EEPROM (U3)
This is 128K bits memory. The each kind of value to set-up at power-on, caller list memory and so on are stored in this device.
4.2.6.
RF Module (COB2)
Receiver part: RF signals induced at the antenna are extracted by the RF control interface. The RF signal to be selected is
demodulated into RX_DATA signals. And the signals are passed to the base band controller.
Transmitter part: The signal from transceiver chip-set is fed to the antenna through the RF power amplifier by control of the RF
control interface. And then this signal is radiated from antenna.
Logical part: The frequency to be used is generated in transceiver chip-set by control signals (CLK, DATA, ENABLE, SYRI) of
the RF control interface.
4.2.7.
ITAD (U6)
8 M bytes non-volatile memory flash for storing voice prompt which combine the use of BBIC to perform ITAD function. 
4.2.8.
Speaker Amplifier (U2)
U2 forms an audio power amplifier to play TAD message and ringer. 
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