ANNEX 2 TO
SERVICE MANUAL
CTN-BB
This supplement refers to change of Microprocessor for Circuit Reference 7600.
Chassis type is changed from CTN to CTN-BB.
Contents Page
Introduction 2
Circuit Diagrams 3 - 6
Print board layout 7 - 8
Circuit Description
Small signal processing 9 - 10
RBG Amplifiers 11
Sound Circuit 11
Power Supply 12 - 13
Deflection 14
Microcontroller/Text 14 - 15
Service components 16 - 17 - 18
Introduction
The main change on this Chassis to the previous CTN-AA type are the introduction of
new Microprocessors for both - T ext and Non Text Models.
Also the Flyback Transformer for 20″ ONL Y MODELS has been changed.
The relevant Circuit Diagrams and PCB Layouts have been amended to show these
changes, plus minor corrections/updates have been made to all other circuit information
where this has been found necessary .
Page 16, 17 and 18 shows different Part Numbers for the Component changes on the
new chassis.
Please use the original CTN Service Manual for all other parts information.
2