Panasonic KX-TG7731S User Manual

© Panasonic System Networks Co., Ltd. 2012
Unauthorized copying and distribution is a violation
of law.
ORDER NO. KM41201532CE
F13
Telephone Equipment
Model No. KX-TG7731S
KX-TG7732S
KX-TG7733S
KX-TGA470S
Link-to-Cell Cellular Convergence
Solution
S: Sliver Version
(for U.S.A.)
(Handset)
KX-TGA470S KX-TG7731S
(Base Unit)
(Charger Unit)
Model No
Base Unit Handset Charger Unit Expandable
KX-TG7731
1 (TG7731) 1 (TGA470) Up to 6
KX-TG7732
1 (TG7731) 2 (TGA470) 1 Up to 6
KX-TG7733
1 (TG7731) 3 (TGA470) 2 Up to 6
KX-TGA470*
1 (TGA470) 1
Configuration for each model
*KX-TGA470 is also an optional accessory, which contains a
handset and a charger.

Panasonic KX-TG7731S Specifications

General

Type	Cordless Telephone
Number of Handsets	1
Expandable Up To	6
Caller ID	Yes
DECT Technology	Yes
Frequency	1.9 GHz
Speakerphone	Yes
Answering System	Yes
Answering System Recording Time	18 minutes
Call Block	Yes
Keypad on Base Unit	Yes
Display	LCD
Ringer Volume Control	Yes
Headset Jack	Yes
Power Failure Talk System	Yes
Call Waiting	Yes
Intercom	Yes
Color	Silver
Battery Type	Ni-MH
Range	Up to 1000 feet

Summary

Safety Precautions

1.1. For Service Technicians

Safety precautions for service technicians during repair.

Warning

2.1. Battery Caution

Cautionary notes regarding battery handling and disposal.

Technical Descriptions

4.1. Circuit Configuration of TG773x Series Phones

Overview of the circuit configuration for TG773x series phones.

4.3. Block Diagram (Base Unit_Main)

Block diagram illustrating the main components of the base unit.

4.7. Block Diagram (Handset)

Block diagram of the handset components.

Test Mode

8.1. Engineering Mode

Procedures for accessing and using engineering test modes.

8.1.2. Handset

Engineering mode procedures specific to the handset.

Service Mode

9.1. How to Clear User Setting (Handset Only)

Method to reset user settings on the handset to factory defaults.

Troubleshooting Guide

10.1. Troubleshooting Flowchart

Flowchart to diagnose and resolve common product issues.

10.1.1. Check Power

Steps to check power supply and related circuits for troubleshooting.

10.1.2. Check Record

Troubleshooting steps for issues with message recording functionality.

10.1.3. Check Playback

Troubleshooting steps for issues with message playback functionality.

10.1.4. Check Battery Charge

Procedures to diagnose battery charging problems.

10.1.5. Check Link

10.1.6. Check the RF part

Procedures to test and diagnose RF component issues.

10.1.12. Check BT Communication

Disassembly and Assembly Instructions

11.1. Disassembly Instructions

11.2. How to Replace the Base Unit LCD

11.3. How to Replace the Handset LCD

Measurements and Adjustments

12.2. The Setting Method of JIG

12.3. Adjustment Standard (Base Unit)

12.5. Adjustment Standard (Handset)

12.6. Things to Do after Replacing IC or X'tal

Post-replacement procedures for ICs and crystals.

Schematic Diagram

14.2. Schematic Diagram (Base Unit_Main)

Detailed schematic of the base unit's main circuit.

14.3. Schematic Diagram (Base Unit_RF)

14.4. Schematic Diagram (Base Unit_Operation)

14.5. Schematic Diagram (Handset_Main)

Detailed schematic of the handset's main circuit.

Exploded View and Replacement Parts List

16.1. Cabinet and Electrical Parts (Base Unit)

16.2. Cabinet and Electrical Parts (Handset)

16.5. Replacement Parts List

Comprehensive list of replacement parts with part numbers.