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to the sets specified on page 2.
This Manual describes the differences and the additionally fitted
components of the TV receivers specified on page 2.
The individual modules of the sets are listed in the module list on
page 6 / 7.
Basic instructions for servicing are given in the:
–Service Manual CUC 2103 / M, CUC 2121 / M
(Part number 720100407000)
–Service Manual Safety (Part number 720108000000)
Table of Contents
Page
Corrections ...................................................................................... 2
Notes ............................................................................................... 4
List of Modules – Service Manual with Supplements ...................... 5
Module List ...................................................................................... 6
Technical Data ................................................................................ 8
CRT Panel 293051223700 / 3900 ................................................ 12
Spare Parts Lists ........................................................................... 14

The Service Manual CUC 2103 / 2105 / 2121 M applies to the sets
specified on the front page.
This Manual describes the differences and the additionally fitted
components of the sets.
The individual modules of the sets are listed in the module list on
page 3.
Basic instructions for servicing are given in the:
–Service Manual CUC 2103 / M, CUC 2121 / M
(Part number 720100407000)
–Service Manual Safety (Part number 720108000000)
Table of Contents
Page
Notes ............................................................................................... 2
List of Modules – Service Manual with Supplements ...................... 3
Module List ...................................................................................... 3
Technical Data ................................................................................ 4
Module Mains Unit 12V 293050073400 .......................................... 5
Processing Board 293052192800 / 3000 ........................................ 9
Spare Parts Lists ........................................................................... 12

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

The Service Manual CUC 2121 applies to the sets specified on the front
page.
This supplement describes the differences and the additionally fitted
components of the sets.
Basic instructions for servicing are given in the:
–Service Manual CUC 2121 (Part number 720100407000)
–Service Manual “Safety” (Part number 720108000000)
Table of Contents
Page
Notes ............................................................................................... 2
List of Modules – Service Manual with Supplements ...................... 3
Module List ...................................................................................... 4
Technical Data ................................................................................ 5
Hint for Alignment ........................................................................... 6
Chassis Board ................................................................................. 7
Oscillograms (Chassis) ................................................................. 13
Chassis Board (Enlarged) ............................................................. 15
Circuit Diagram Mains Section ...................................................... 19
Circuit Diagram Deflection Section ............................................... 21
Circuit Diagram Processor Section ............................................... 23
Circuit Diagram Tuner Section ...................................................... 25
Circuit Diagram Video Section ...................................................... 27
Circuit Diagram Audio Section ...................................................... 29
CRT Panel .................................................................................... 31
AF Module Stereo ......................................................................... 33
EURO-AV Socket Board ............................................................... 37
Processing Board .......................................................................... 39
Spare Parts Lists ........................................................................... 42