DOWNLOAD Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS Service Manual ↓ Size: 2.48 MB | Pages: 90 in PDF or view online for FREE

Model
KX-TG8041RUM KX-TG8041RUT KX-TGA800RUT KX-TGA800RUC KX-TGA800RUS
Pages
90
Size
2.48 MB
Type
PDF
Document
Service Manual
Brand
Device
Telephone / DIGITAL CORDLESS ANSWERING SYSTEM
File
kx-tg8041rum-kx-tg8041rut-kx-tga800rut-kx-tga800ru.pdf
Date

Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS Service Manual ▷ View online

4
KX-TG8041RU/KX-TGA800RU
1 Safety Precautions
1.1.
For Service Technicians
• Repair service shall be provided in accordance with repair technology information such as service manual so as to pre-
vent fires, injury or electric shock, which can be caused by improper repair work.
1. When repair services are provided, neither the products nor their parts or members shall be remodeled.  
2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced. 
3. FASTON terminals shall be plugged straight in and unplugged straight out. 
• ICs and LSIs are vulnerable to static electricity.
When repairing, the following precautions will help prevent recurring malfunctions.
1. Cover plastic parts boxes with aluminum foil.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
2 Warning
2.1.
Battery Caution
1. Danger of explosion if battery is incorrectly replaced.
2. Replace only with the same or equivalent type recommended by the manufacturer.
3. Dispose of used batteries according to the manufacture’s Instructions.
2.2.
About Lead Free Solder (Pbf: Pb free)
Note:
In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that con-
tains lead.
We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin (Sn),
Silver (Ag), and Copper (Cu).
This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair
work we suggest using the same type of solder.
Caution
• PbF solder has a melting point that is 50 
°F ~ 70 °F (30 °C ~ 40 °C) higher than Pb solder. Please use a soldering iron with 
temperature control and adjust it to 700 
°F ± 20 °F (370 °C ± 10 °C). 
• Exercise care while using higher temperature soldering irons.: 
Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.
• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100 
°F (600 °C).
• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the
opposite side (See the figure below).
5
KX-TG8041RU/KX-TGA800RU
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.
6
KX-TG8041RU/KX-TGA800RU
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-TG8041RU/KX-TGA800RU
4 Technical Descriptions
4.1.
Block Diagram (Base Unit)
Analog
Front
End
T
o TEL_LINE
Bridge
Rect
 D3D3
Hook Switch
Q3, Q4Q3,
Q4
Audio
Bell/Caller ID
Interface
CPU
24
22
29
26
27
25
30
BELL
HOOK
Off-Hook Line Voltage
31
A/D
D/A
ADPCM
Codec Filter
DSP
Speech Encoding
Speech Decoding
BMC
Burst Encoding
Burst Decoding
RF
PLL
5
3
97
95
9
10
EEPROM
SCL
SDA
67
68
54
66
65
64
63
16
17
15
14
85
To AC Adaptor
Limit
Resistor
Charge
Detector
CHARGE
CONTACT
(Optional)
VUNREG
3.0V
Reg.
IC1
2.4V
Reg.
Q401
1.8V
Reg.
Q8
3.0 V
2.4 V
1.8 V
BBIC
IC401
FLASH MEMORY
(TAM)
IC421
TAM Companion IC
MIC
SP
IC201
IC7
MOD/DEMOD
Charge
Pump
53
2.5V
X
T
A
L
X
1
X1
10.3
68
M
H
z
IC801
R
X
n
R
X
p
T
X
p
T
X
n
P
on
P
S
E
L
V
DD
-P
A
D
R
V
4
3
6
7
T
X
on
R
X
on
D
801
D802
6
92
AN
T1
AN
T2
9
8
AN
T1
AN
T2
R
F
 P
A
AN
T1
ANT2
98
93
94
100
L
1
L
2
L
1
L2
2
1
91
0
1
1
1
2
2
3
CE
SPI_DI
SPI_DO
SPI_CLK
SPI_EN
RST
SCK
SI
SO
6
5
14
16
27
31
2
KX-TG
80
41 BLOCK DIA
GRAM
(BASE UNIT)
Page of 90
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Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS Service Manual ▷ Download

  • DOWNLOAD Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS Service Manual ↓ Size: 2.48 MB | Pages: 90 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS Telephone. Information contained in Panasonic KX-TG8041RUM / KX-TG8041RUT / KX-TGA800RUT / KX-TGA800RUC / KX-TGA800RUS Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.