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Knowledge Base

8020 terminal hardware malfunction, terminal host can’t output image

Publication Date:  2012-09-20  |   Views:  171  |   Downloads:  0  |   Author:  q00229199  |   Document ID:  EKB1000015457


Issue Description

Certain Conference TV opening, the 8020terminal version is 2.7, use E1 for transmission. MCU is 8620. The terminal works well when debugging the equipment. In one conference, suddenly the TV turn to blue screen. Restart host machine, malfunction can’t remove. The TV keeps on blue screen. No icon hint. 

Alarm Information


Handling Process

1. Use same line connect another terminal, image output is normal, remove the possibility of line malfunction.
2. Upgrade 8020 terminal host software, problem is not solved, remove the possibility of software problem.
3. Connect the output directly to TV, image is normal. Remove the possibility of camera and TV
4. Open terminal host , reinstall each single board,  plug and unplug each port. Start the terminal, image restore to normal, problem solved.

Root Cause

1. Line malfunction, error code rate is not fit.
2. Terminal host software problem.
3. Camera or TV malfunction
4. 8020 terminal hardware malfunction