Table Of Contents - Samsung QA65Q90RAK Service Manual

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User manual (52 pages)

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Table of Contents

1. Precautions ....................................................................................................................... 1-1

1-1. Safety Precautions .......................................................................................................................1-1

1-1-1. Warnings .............................................................................................................................1-1

1-1-2. Servicing the LED TV ........................................................................................................1-1

1-1-3. Fire and Shock Hazard ......................................................................................................1-1

1-1-4. Product Safety Notices.................................................................................................... 1-2

1-2. Servicing Precautions ................................................................................................................. 1-3

1-2-1. General Servicing Precautions ...................................................................................... 1-3

1-3. Static Electricity Precautions .................................................................................................... 1-4

1-4. Installation Precautions ............................................................................................................. 1-5

2. Product Specifications .................................................................................................... 2-1

2-1. Product Information .....................................................................................................................2-1

2-2. Product specification .................................................................................................................. 2-2

2-3. Accessories ................................................................................................................................. 2-14

2-4. Viewing the Functions .............................................................................................................. 2-15

2-4-1. 2019'

2-4-2. Quick Guides .................................................................................................................. 2-22

2-4-3. The Samsung Smart Remote ...................................................................................... 2-31

2-4-4. Using the TV Controller ................................................................................................2-33

2-4-5. Rear View & One Connect ............................................................................................2-34

2-5. Supported subtitles .................................................................................................................. 2-35

3. Disassembly and Reassemble ........................................................................................ 3-1

3-1. TV Disassembly ............................................................................................................................ 3-1

3-2. One Connect Disassembly ........................................................................................................3-11

4. Troubleshooting .............................................................................................................. 4-1

4-1. Function Control Operation Test ............................................................................................... 4-1

4-2. Power ............................................................................................................................................4-2

4-2-1. TV POWER STANDBY .......................................................................................................4-2

4-2-2. TV POWER ON SEQUENCE .............................................................................................4-5

4-2-3. One Connect POWER ON SEQUENCE ..........................................................................4-9

4-2-4. OCB Self Power Supply.................................................................................................4-10

4-2-5. BACKLIGHT Dimming Control & BL Supply Path ...................................................... 4-12

4-2-6. BACKLIGHT ..................................................................................................................... 4-14

4-2-7. Backlight Quick Test ...................................................................................................... 4-16

4-3. Video ........................................................................................................................................... 4-18

4-3-1. ONE CONNECT ............................................................................................................... 4-18

4-3-2. MAIN/T-CON BOARD .................................................................................................... 4-19

4-3-3. PANEL ............................................................................................................................. 4-21

4-3-4. Check Test Patterns ......................................................................................................4-22

Concept ...................................................................................................... 2-15

Contents