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Answering Machine
KX-TG8421FXB
Panasonic KX-TG8421FXB Manuals
Manuals and User Guides for Panasonic KX-TG8421FXB. We have
1
Panasonic KX-TG8421FXB manual available for free PDF download: Service Manual
Panasonic KX-TG8421FXB Service Manual (105 pages)
Digital Cordless Answering System
Brand:
Panasonic
| Category:
Answering Machine
| Size: 2.58 MB
Table of Contents
Table of Contents
3
1 Safety Precautions
4
For Service Technicians
4
2 Warning
4
Battery Caution
4
About Lead Free Solder (Pbf: Pb Free)
4
Discarding of P.C. Board
5
3 Specifications
6
4 Technical Descriptions
7
Block Diagram (Base Unit)
7
Circuit Operation (Base Unit)
8
Power Supply Circuit
9
Block Diagram (Handset)
11
Circuit Operation (Handset)
12
Circuit Operation (Charger Unit)
13
Signal Route
14
5 Location of Controls and Components
16
Controls
16
6 Installation Instructions
17
Connections
17
Battery
17
7 Operating Instructions
19
Programmable Settings
19
Answering System Setting
21
Sms Settings
21
Registering a Handset to a Base Unit
22
Copying Phonebook Entries
23
Dialling Mode
23
Error Messages
23
Troubleshooting
24
For Service Hint
28
8 Service Mode
29
Engineering Mode
29
Copying Phonebook Items When Repairing
33
How to Clear User Setting
35
9 Troubleshooting Guide
36
Troubleshooting Flowchart
36
Check Power
37
Base Unit
38
Charger Unit
38
Check Link
39
Check the Rf Part
43
Check Handset Transmission
46
Troubleshooting by Symptom (Base Unit and Charger Unit)
48
Troubleshooting by Symptom (Handset)
52
10 Disassembly and Assembly Instructions
56
Disassembly Instructions
56
How to Replace the Handset LCD
60
11 Measurements and Adjustments
61
Equipment Required
61
The Setting Method of JIG (Base Unit)
61
Adjustment Standard (Base Unit)
63
Adjustment Standard (Charger Unit)
64
The Setting Method of JIG (Handset)
65
Adjustment Standard (Handset)
67
Things to Do after Replacing IC or X'tal
68
RF Specification
70
How to Check the Handset Speaker or Receiver
71
Frequency Table (Mhz)
71
12 Miscellaneous
72
CPU Data (Base Unit)
72
CPU Data (Handset)
74
How to Replace the Flat Package IC
76
How to Replace the LLP (Leadless Leadframe Package) IC
78
Package
78
Terminal Guide of the Ics, Transistors and Diodes
80
Schematic Diagram
81
For Schematic Diagram
81
Schematic Diagram (Base Unit)
82
Schematic Diagram (Base Unit_Operation)
84
Schematic Diagram (Handset)
86
Schematic Diagram (Charger Unit)
88
Printed Circuit Board
89
Circuit Board (Base Unit_Main)
89
Circuit Board (Base Unit_Operation)
91
Circuit Board (Handset)
92
Circuit Board (Charger Unit)
94
Exploded View and Replacement Parts List
95
Cabinet and Electrical Parts (Base Unit)
95
Cabinet and Electrical Parts (Handset)
96
Cabinet and Electrical Parts (Charger Unit)
97
Accessories and Packing Materials
98
Replacement Part List
100
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