Service Manuals, User Guides, Schematic Diagrams or docs for : . Various CHINA TV TV China M28 SERVICE MANUAL

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.



Image preview - the first page of the document
China M28 SERVICE MANUAL


>> Download China M28 SERVICE MANUAL documenatation <<

Text preview - extract from the document
SERVICEMANUALM28 SUPERONECHIP
TCL OVERSEAS HOLDINGS LIMITED   Service Manual 1
     2   Service Manual                 TCL OVERSEAS HOLDINGS LIMITED


                                      CONTENTS




I.       Servicing Precautions.........................................................3

II.      Product Specification.........................................................4

III.     Brief Introduction On Chassis................................................6

IV.      IC Pin Description.............................................................10

V.       Adjusting Description.........................................................39

VI.      Troubleshooting...............................................................46

VII. PCB Layout Diagram.........................................................58

VIII. Schematic Circuit Diagram..................................................60

IX.      Exploded View................................................................61

X.       Spare Parts List...............................................................62

XI.      Safety & EMC Components................................................74

XII. Change Record...............................................................75




* FOR INFORMATION ONLY
                          Service Manual 3

  SERVICE MANUAL FOR M28 ONE-CHIP CHASSIS
PART I. Servicing Precautions
When working, the unit is with high voltage about 25KV inside. So, to avoid the risk of electric shock,
be careful to adjust the chassis!


1. Only qualified personnel should perform service procedures.


2. All specification must be met over line voltage ranger of 110V AC to 240V AC 50Hz/60Hz.


3. Do not operate in WET/DAMP conditions.


4. Portions of the power supply board are hot ground. The remaining boards are cold ground.


5. Discharge of CRT anode should be done only to CRT ground strap.


6. When fuse blow, ensure to replace a fuse with the same type and specification.


7. Keep the wires away from the components with high temperature or high voltage.


8. When replacing the resister with high power, keep it over the PCB about 10mm.


9. The CRT anode high voltage has been adjusted and set in the factory. When repairing the chassis,
do not make the high voltage exceed 27.5KV (The beam current is 0uA). Generally, the high voltage
is set on 25.5KV



◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo