Read Panasonic KX-TG8077UAJ / KX-TG8077UAS / KX-TG8077UAT / KX-TG8078UAS / KX-TG8078UAT / KX-TGA807UAJ / KX-TGA807UAS / KX-TGA807UAT / KX-TGA809RUS / KX-TGA809RUT Service Manual online
KX-TG8077UAS
KX-TG8077UAT
KX-TG8078UAS
KX-TG8078UAT
KX-TGA807UAJ
KX-TGA807UAS
KX-TGA807UAT
KX-TGA809RUS
KX-TGA809RUT
Silver Version
Titanium Black Version
(for Ukraine)
2.2. About Lead Free Solder (Pbf: Pb free)--------------- 4
2.3. Discarding of P. C. Board-------------------------------- 5
4 Technical Descriptions ----------------------------------------- 7
4.2. Circuit Operation (Base Unit) --------------------------- 8
4.3. Block Diagram (Handset)-------------------------------- 9
4.4. Circuit Operation (Handset)----------------------------10
4.5. Signal Flow-------------------------------------------------11
6.2. Battery-------------------------------------------------------13
7.2. Handset Settings -----------------------------------------15
7.3. Registering a Handset to a Base Unit---------------16
7.4. Deregistering a Handset --------------------------------16
7.5. Key Lock ----------------------------------------------------16
7.6. For Service Hint-------------------------------------------17
8.2. How to Clear User Setting------------------------------23
8.3. How to Set when Replacing Unit ---------------------25
9.2. Troubleshooting-------------------------------------------27
9.3. Check Point ------------------------------------------------29
9.4. How to Replace the Flat Package IC----------------30
11.2. Connections------------------------------------------------35
11.3. TEST Mode Settings ------------------------------------37
11.4. Read ID -----------------------------------------------------38
11.5. Adjustment Standard ------------------------------------39
11.6. Adjust Frequency ----------------------------------------41
11.7. Adjust Voltage ---------------------------------------------42
12.2. Schematic Diagram (Base Unit_Main) --------------45
12.3. Schematic Diagram (Handset) ------------------------48
13.2. Circuit Board (Handset) ---------------------------------53
15.2. Cabinet and Electrical Parts (Handset) -------------57
15.3. Accessories and Packing Materials------------------58
2. If a lead wire assembly is supplied as a repair part, the leadwire assembly shall be replaced.
3. FASTON terminals shall be plugged straight in and unplugged straight out.
2. Ground the soldering irons.
3. Use a conductive mat on worktable.
4. Do not grasp IC or LSI pins with bare fingers.
2. Replace only with the same or equivalent type recommended by the manufacturer.
3. Dispose of used batteries according to the manufacture’s Instructions.
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.