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Panasonic KX-TG4021LAT Service Manual

Also see for KX-TGA403LAT: Service manualService manual

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Contents
  1. Table Of Contents
  2. Battery Caution
  3. Discarding of P. C. Board
  4. Specifications
  5. Technical Descriptions
  6. signal flowchart in the radio parts
  7. Block Diagram (Base Unit_Main)
  8. Block Diagram (Base Unit_RF Part)
  9. Circuit Operation (Base Unit)
  10. charge circuit
  11. telephone line interface
  12. Block Diagram (Handset)
  13. Block Diagram (Handset_RF Part)
  14. Circuit Operation (Handset)
  15. Circuit Operation (Charger Unit)
  16. Signal Route
  17. Location of Controls and Components
  18. Test Mode
  19. Service Mode
  20. Troubleshooting Guide
  21. check power
  22. base unit
  23. check battery charge
  24. check link
  25. check the rf part
  26. check handset transmission
  27. Disassembly and Assembly Instructions
  28. How to Replace the Handset LCD
  29. Measurements and Adjustments
  30. Adjustment Standard (Base Unit)
  31. Adjustment Standard (Charger Unit)
  32. Adjustment Standard (Handset)
  33. Things to Do after Replacing IC or X'tal
  34. Frequency Table
  35. Miscellaneous
  36. how to install the ic
  37. How to Replace the Shield Case
  38. how to install the shield case
  39. How to Replace the LLP (Leadless Leadframe Package) IC
  40. Terminal Guide of the ICs, Transistors and Diodes
  41. Schematic Diagram
  42. Schematic Diagram (Base Unit_Main)
  43. Schematic Diagram (Base Unit_Operation)
  44. Schematic Diagram (Handset_Main)
  45. Schematic Diagram (Charger Unit)
  46. Printed Circuit Board
  47. bottom view
  48. Circuit Board (Base Unit_Operation)
  49. Circuit Board (Handset_Main)
  50. Circuit Board (Charger Unit)
  51. Exploded View and Replacement Parts List
  52. Cabinet and Electrical Parts (Handset)
  53. replacement parts list
  54. charger unit
Panasonic KX-TG4021LAT Service Manual Manual pdf 9 page image
9KX-TG4021LAT/KX-TG4022LAT/KX-TG4023LAT/KX-TGA403LAT4.2. Block Diagram (Base Unit_Main)KX-TG4021/4022/4023 BLOCK DIAGRAM (Base Unit_Main)Operational P.C. BoardD101CHARGE_CONTACT+-SPX50113.824 MHzANT2ANT1 TEL JACKL1TL1RDCPDCMDC JACKRLYSIDE TONECIRCUITQ161Q141BELLDETECTHOOKBELLQ111LINLOUTRF_PARTHSMIPHSMINIC501BBICINUSEDETECT 2INUSEDETECT 1RECEIVEAMPDCIN 1DCIN 2IC302VCCPAVBAT_APUVBATVCC_FEVCC_IFVCC_VCOPDN DET3.0VDOUBOUTSCL, SDAWPVDDANS_LEDIC601FLASHMEMORYIC611EEPROMMEMORYKEYS R151,R152 R131, R133Q171VBATDL,CSMSG_LEDKEY 1 3KEY C, D, ESPOUTNSPOUTP3.0 VREGULATORIC331RESET ICCLK,DOSTM/CKMR371R372VCCAVCCANT2ANT1RXpRXnRXONTXpTXnTXONRESETRSTN
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This manual is suitable for:
KX-TGA403LATKX-TG4021LATKX-TG4022LATKX-TG4023LAT
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