Read Panasonic KX-TG6711RUB / KX-TG6711RUM / KX-TG6712RUM / KX-TG6721RUB / KX-TG6721RUS / KX-TG6722RUB / KX-TG6711CAB / KX-TG6711CAM / KX-TG6721CAB / KX-TG6721CAM / KX-TG6722CAB / KX-TG6711UAB / KX-TG6711UAM / KX-TG6712UAB / KX-TG6721UAB / KX-TGA671RUB / KX-TGA671RUS Service Manual online
KX-TG6711RUM
KX-TG6712RUM
KX-TG6721RUB
KX-TG6721RUS
KX-TG6722RUB
KX-TG6711CAB
KX-TG6711CAM
KX-TG6712CAB
KX-TG6721CAB
KX-TG6721CAM
KX-TG6722CAB
KX-TG6711UAB
KX-TG6711UAM
KX-TG6712UAB
KX-TG6721UAB
KX-TGA671RUB
KX-TGA671RUS
Digital Cordless Answering System
M: Metic Grey Version
S: Pearl Silver Version
(for CIS)
(Base Unit)
handset and a charger.
public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting
to service a product. Products powered by electricity should be serviced or repaired only by experienced professional
technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone
else could result in serious injury or death.
in the Schematic Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that
these critical parts should be replaced with manufacturer's specified parts to prevent shock, fire or other hazards.
Do not modify the original design without permission of manufacturer.
Standard leaded, (Pb), solder can be used as usual on boards without the PbF mark.
When this mark does appear, please read and follow the special instructions described in this manual on the
use of PbF and how it might be permissible to use Pb solder during service and repair work.
L The illustrations in this Service Manual may vary slightly from the actual product.
2.2. About Lead Free Solder (Pbf: Pb free)--------------- 5
4 Technical Descriptions ----------------------------------------- 8
4.2. Circuit Operation (Base Unit) --------------------------- 9
4.4. Circuit Operation (Base Unit) -------------------------- 11
4.4.2. Flash Memory (IC601) (for KX-TG6721
4.4.4. Telephone Line Interface---------------------------12
4.4.5. Power Supply Circuit--------------------------------12
4.6. Circuit Operation (Handset)----------------------------15
4.6.2. Power Supply Circuit/Reset Circuit--------------15
4.6.3. Charge Circuit ----------------------------------------15
4.6.4. Battery Low/Power Down Detector--------------15
4.6.5. Speakerphone ----------------------------------------15
6 Installation Instructions ---------------------------------------20
7 Operating Instructions-----------------------------------------20
8.1.2. Handset ------------------------------------------------23
8.2.2. Introduction--------------------------------------------25
8.2.3. EEPROM contents ----------------------------------25
8.4. How to Clear User Setting------------------------------28
8.4.2. Resetting only handset -----------------------------28
9.1.2. Check Battery Charge ------------------------------31
9.1.3. Check Link---------------------------------------------32
9.1.4. Check the RF part -----------------------------------35
9.1.5. Check Handset Transmission --------------------38
9.1.6. Check Handset Reception-------------------------38
9.1.7. Check Caller ID --------------------------------------38
9.1.8. Bell Reception ----------------------------------------39
9.1.9. Check TAM Operation (for KX-TG6721
9.2.2. Check Point (Charger Unit) ----------------------- 42
9.3.2. Troubleshooting for Speakerphone ------------- 46
10.1.2. Handset------------------------------------------------ 51
10.1.3. Charger Unit ------------------------------------------ 52
11.2. The Setting Method of JIG (Base Unit) ------------- 56
11.2.2. How to install Batch file into P.C. ---------------- 57
11.2.3. Commands-------------------------------------------- 57
11.5.2. How to install Batch file into P.C. ---------------- 61
11.5.3. Commands-------------------------------------------- 61
11.8.2. Handset------------------------------------------------ 65
12.1.2. How to Remove the IC----------------------------- 67
12.1.3. How to Install the IC -------------------------------- 68
12.1.4. How to Remove a Solder Bridge ---------------- 68
12.2.2. Caution------------------------------------------------- 69
12.2.3. How to Remove the Shield Case---------------- 69
12.2.4. How to Install the Shield Case ------------------- 70
12.3.2. Handset------------------------------------------------ 71
12.3.3. Charger Unit ------------------------------------------ 71
13.1.3. Charger Unit (Charger Unit) ---------------------- 72
13.2.2. KX-TG6721SP --------------------------------------- 76
13.4. Handset----------------------------------------------------- 80
13.5. Charger Unit----------------------------------------------- 82
14.1.2. Bottom View ------------------------------------------ 84
14.3.2. Bottom View ------------------------------------------ 88
14.4.2. Bottom View ------------------------------------------ 89
15.1.2. KX-TG6721 ------------------------------------------- 91
15.3. Cabinet and Electrical Parts (Charger Unit) ------- 93
15.4. Accessories------------------------------------------------ 94
15.5. Replacement Part List ---------------------------------- 95
15.5.2. Handset ---------------------------------------------- 100
15.5.3. Charger Unit ---------------------------------------- 102
15.5.4. Accessories ----------------------------------------- 102
15.5.5. Screws ----------------------------------------------- 102
15.5.6. Fixtures and Tools--------------------------------- 102