Read Panasonic KX-DT321UA Service Manual online
2
KX-DT321UA/KX-DT321UA-B
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions -----------------------------------------------3
1.1. For Service Technicians ---------------------------------3
2 Warning --------------------------------------------------------------3
2.1. About Lead Free Solder (PbF: Pb free) --------------3
3 Specifications ------------------------------------------------------4
3.1. General Descriptions--------------------------------------4
4 Technical Descriptions------------------------------------------5
4.1. Block Diagram ----------------------------------------------5
4.2. Circuit Operations ------------------------------------------6
4.2. Circuit Operations ------------------------------------------6
5 Location of Controls and Components------------------ 15
5.1. Name and Locations ------------------------------------ 15
6 Installation Instructions--------------------------------------- 16
7 Troubleshooting Guide---------------------------------------- 17
7 Troubleshooting Guide---------------------------------------- 17
7.1. No Operation ---------------------------------------------- 17
7.2. LCD Does Not Operate--------------------------------- 18
7.3. Handset Does Not Work-------------------------------- 19
7.4. Speaker-Phone Trouble -------------------------------- 20
7.5. DXDP-DPT Does Not Work --------------------------- 21
7.2. LCD Does Not Operate--------------------------------- 18
7.3. Handset Does Not Work-------------------------------- 19
7.4. Speaker-Phone Trouble -------------------------------- 20
7.5. DXDP-DPT Does Not Work --------------------------- 21
8 Disassembly Instructions ------------------------------------ 22
9 Miscellaneous ---------------------------------------------------- 24
9 Miscellaneous ---------------------------------------------------- 24
9.1. Terminal Guide of ICs, Transistors and
Diodes------------------------------------------------------- 24
9.2. How To Replace a Flat Package IC ----------------- 25
10 Schematic Diagram--------------------------------------------- 26
10.1. Main Board------------------------------------------------- 26
10.2. Waveform -------------------------------------------------- 30
10.2. Waveform -------------------------------------------------- 30
11 Printed Circuit Board ------------------------------------------ 32
11.1. Main Board------------------------------------------------- 32
12 Appendix Information of Schematic Diagram --------- 34
13 Exploded View and Replacement Parts List ----------- 35
13 Exploded View and Replacement Parts List ----------- 35
13.1. IC 2 ---------------------------------------------------------- 35
13.2. IC6 ----------------------------------------------------------- 37
13.3. Cabinet and Electric Parts ----------------------------- 39
13.4. Accessories and Packing Materials ----------------- 40
13.5. Replacement Parts List --------------------------------- 41
13.2. IC6 ----------------------------------------------------------- 37
13.3. Cabinet and Electric Parts ----------------------------- 39
13.4. Accessories and Packing Materials ----------------- 40
13.5. Replacement Parts List --------------------------------- 41
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