Table of Contents Page Notes ............................................................................................... 3 Hints of Service and Special Functions .......................................... 4 List of Modules – Service Manual with Supplements ...................... 4 Module List ...................................................................................... 5 Technical Data ................................................................................ 8 Chassis Board ............................................................................... 12 Oscillograms (Chassis) ................................................................. 17 Chassis Board (Enlarged) ............................................................. 19 Circuit Diagram Mains Section ...................................................... 23 Circuit Diagram Deflection Section ............................................... 25 Circuit Diagram Processor Section ............................................... 27 Circuit Diagram Tuner ................................................................... 29 Variant Equipment Video .............................................................. 29 Circuit Diagram Video Section ...................................................... 31 Circuit Diagram Audio ................................................................... 33 CRT Panel 293051223700 / 3800 ................................................ 35 Module Mains Unit 12V ................................................................. 37 Processing Board 293052191600 / 2500 / 2600 / 3000 / 3300 / 3700 / 4100 / 4200 ............................... 41 Spare Parts Lists ........................................................................... 44

Table of Contents Page Notes ............................................................................................... 3 Hints of Service and Special Functions .......................................... 4 List of Modules – Service Manual with Supplements ...................... 4 Module List ...................................................................................... 5 Technical Data ................................................................................ 8 Chassis Board ............................................................................... 12 Oscillograms (Chassis) ................................................................. 17 Chassis Board (Enlarged) ............................................................. 19 Circuit Diagram Mains Section ...................................................... 23 Circuit Diagram Deflection Section ............................................... 25 Circuit Diagram Processor Section ............................................... 27 Circuit Diagram Tuner ................................................................... 29 Variant Equipment Video .............................................................. 29 Circuit Diagram Video Section ...................................................... 31 Circuit Diagram Audio ................................................................... 33 CRT Panel 293051223700 / 3800 ................................................ 35 Module Mains Unit 12V ................................................................. 37 Processing Board 293052191600 / 2500 / 2600 / 3000 / 3300 / 3700 / 4100 / 4200 ............................... 41 Spare Parts Lists ........................................................................... 44

Table of Contents Page Notes ............................................................................................... 3 Hints of Service and Special Functions .......................................... 4 List of Modules – Service Manual with Supplements ...................... 4 Module List ...................................................................................... 5 Technical Data ................................................................................ 8 Chassis Board ............................................................................... 12 Oscillograms (Chassis) ................................................................. 17 Chassis Board (Enlarged) ............................................................. 19 Circuit Diagram Mains Section ...................................................... 23 Circuit Diagram Deflection Section ............................................... 25 Circuit Diagram Processor Section ............................................... 27 Circuit Diagram Tuner ................................................................... 29 Variant Equipment Video .............................................................. 29 Circuit Diagram Video Section ...................................................... 31 Circuit Diagram Audio ................................................................... 33 CRT Panel 293051223700 / 3800 ................................................ 35 Module Mains Unit 12V ................................................................. 37 Processing Board 293052191600 / 2500 / 2600 / 3000 / 3300 / 3700 / 4100 / 4200 ............................... 41 Spare Parts Lists ........................................................................... 44

Table of Contents Page Notes ............................................................................................... 3 Hints of Service and Special Functions .......................................... 4 List of Modules – Service Manual with Supplements ...................... 4 Module List ...................................................................................... 5 Technical Data ................................................................................ 8 Chassis Board ............................................................................... 12 Oscillograms (Chassis) ................................................................. 17 Chassis Board (Enlarged) ............................................................. 19 Circuit Diagram Mains Section ...................................................... 23 Circuit Diagram Deflection Section ............................................... 25 Circuit Diagram Processor Section ............................................... 27 Circuit Diagram Tuner ................................................................... 29 Variant Equipment Video .............................................................. 29 Circuit Diagram Video Section ...................................................... 31 Circuit Diagram Audio ................................................................... 33 CRT Panel 293051223700 / 3800 ................................................ 35 Module Mains Unit 12V ................................................................. 37 Processing Board 293052191600 / 2500 / 2600 / 3000 / 3300 / 3700 / 4100 / 4200 ............................... 41 Spare Parts Lists ........................................................................... 44

Table of Contents Page Notes ............................................................................................... 3 Hints of Service and Special Functions .......................................... 4 List of Modules – Service Manual with Supplements ...................... 4 Module List ...................................................................................... 5 Technical Data ................................................................................ 8 Chassis Board ............................................................................... 12 Oscillograms (Chassis) ................................................................. 17 Chassis Board (Enlarged) ............................................................. 19 Circuit Diagram Mains Section ...................................................... 23 Circuit Diagram Deflection Section ............................................... 25 Circuit Diagram Processor Section ............................................... 27 Circuit Diagram Tuner ................................................................... 29 Variant Equipment Video .............................................................. 29 Circuit Diagram Video Section ...................................................... 31 Circuit Diagram Audio ................................................................... 33 CRT Panel 293051223700 / 3800 ................................................ 35 Module Mains Unit 12V ................................................................. 37 Processing Board 293052191600 / 2500 / 2600 / 3000 / 3300 / 3700 / 4100 / 4200 ............................... 41 Spare Parts Lists ........................................................................... 44

Table of Contents Page General Section .................................. 1-2…1-12 General Notes .............................................................................. 1-2 Service Notes ............................................................................... 1-3 Technical Data ............................................................................. 1-4 Safety Advices ............................................................................. 1-5 Operating Hints (DAVIO 55 T55-4201/5 TOP) ............................. 1-8 Service and Special Functions ................................................... 1-10 Alignment.............................................. 2-3…2-4 Layout of the PCBs and Circuit Diagrams ......................... 3-1…3-14 Circuit Diagrams: Mains Section .............................................................................. 3-1 Horizontal Deflection .................................................................... 3-1 Vertical Deflection ........................................................................ 3-2 Main Circuit Diagram ................................................................... 3-9 CRT Board ................................................................................. 3-13 AV Switch Board ........................................................................ 3-14 AV Board .................................................................................... 3-14 Option WEB ............................................................................... 3-14 PCBs: Chassis Board .............................................................................. 3-3 Oscillograms Chassis .................................................................. 3-5 CRT Panel ................................................................................. 3-13 AV Switch Board ........................................................................ 3-14 AV Board .................................................................................... 3-14 Spare Parts Lists .................................. 4-1…4-3

Table of Contents Page General Section .................................. 1-2…1-12 General Notes .............................................................................. 1-2 Service Notes ............................................................................... 1-3 Technical Data ............................................................................. 1-4 Safety Advices ............................................................................. 1-5 Operating Hints (DAVIO 55 T55-4201/5 TOP) ............................. 1-8 Service and Special Functions ................................................... 1-10 Alignment.............................................. 2-3…2-4 Layout of the PCBs and Circuit Diagrams ......................... 3-1…3-14 Circuit Diagrams: Mains Section .............................................................................. 3-1 Horizontal Deflection .................................................................... 3-1 Vertical Deflection ........................................................................ 3-2 Main Circuit Diagram ................................................................... 3-9 CRT Board ................................................................................. 3-13 AV Switch Board ........................................................................ 3-14 AV Board .................................................................................... 3-14 Option WEB ............................................................................... 3-14 PCBs: Chassis Board .............................................................................. 3-3 Oscillograms Chassis .................................................................. 3-5 CRT Panel ................................................................................. 3-13 AV Switch Board ........................................................................ 3-14 AV Board .................................................................................... 3-14 Spare Parts Lists .................................. 4-1…4-3

Table of Contents Page General Section .................................. 1-2…1-12 General Notes .............................................................................. 1-2 Service Notes ............................................................................... 1-3 Technical Data ............................................................................. 1-4 Safety Advices ............................................................................. 1-5 Operating Hints (DAVIO 55 T55-4201/5 TOP) ............................. 1-8 Service and Special Functions ................................................... 1-10 Alignment.............................................. 2-3…2-4 Layout of the PCBs and Circuit Diagrams ......................... 3-1…3-14 Circuit Diagrams: Mains Section .............................................................................. 3-1 Horizontal Deflection .................................................................... 3-1 Vertical Deflection ........................................................................ 3-2 Main Circuit Diagram ................................................................... 3-9 CRT Board ................................................................................. 3-13 AV Switch Board ........................................................................ 3-14 AV Board .................................................................................... 3-14 Option WEB ............................................................................... 3-14 PCBs: Chassis Board .............................................................................. 3-3 Oscillograms Chassis .................................................................. 3-5 CRT Panel ................................................................................. 3-13 AV Switch Board ........................................................................ 3-14 AV Board .................................................................................... 3-14 Spare Parts Lists .................................. 4-1…4-3