Topfield TF4000FI Manuals

Topfield TF4000FI Manuals

Manuals and User Guides for Topfield TF4000FI. We have 1 Topfield TF4000FI manual available for free PDF download: Service Manual

Topfield TF4000FI Service Manual

Topfield TF4000FI Service Manual (62 pages)

Brand: Topfield | Category: Receiver | Size: 1.7 MB

Table of Contents

Service Manual
1
Important

2
- Table of Contents
  3
1 Safety Instructions

5
2 List and Description of the Major Parts

6
- Main Board
  6
- Front Board
  6
3 Block Diagram of the IRD

7
4 Block Diagram of the Main Board

8
5 Test and Repair

9
- Visual Test
  9
- Basic Function Test
  10
- The Advanced Test of Main Board
  13
  - Voltages on Important Point
    13
  - Reset
    13
  - System Clock
    14
  - RS232 Data Port (Program Download Port) and Program Download
    14
  - LNB Power
    15
  - RF Modulator
    16
  - Video
    16
  - Audio
    16
- The Advanced Test of Front Board
  16
  - Remote Control
    16
- The Advanced Test of SMPS
  17
  - Check the Damaged Parts
    17
  - Test the Diodes
    17
  - Check the Shunt Regulator
    17
  - Check the Pothocoupler IC
    17
  - Check the Fuse
    17
6 PIN Description of the Major Parts

18
- Main Board
  18
- Front Board
  18
- Smps
  18
  - General Description
    20
  - Pin Description
    37
  - Block Diagram
    42
7 Schematic Diagrams

46

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