Texas Instruments manual Troubleshooting Guide, TVP5154EVM Troubleshooting

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Troubleshooting

10Troubleshooting

This chapter discusses ways to troubleshoot the TVP5154EVM.

10.1 Troubleshooting Guide

If you are experiencing problems with the TVP5154EVM hardware or the WinVCC software, see Table 21 for available solutions.

Table 21. TVP5154EVM Troubleshooting

SYMPTOM

At startup, the error message Cannot find DLL file DLPORTIO.DLL appears.

Blank screen

No color

Screen colors are only magenta and green.

Video standard auto-switch does not work on the video decoder side.

Video standard auto-switch does not work on the video encoder side.

CAUSE

The parallel port driver supplied with the EVM has not been installed.

Wrong video input is selected.

Source is connected to the wrong input connector.

YCbCr outputs or clock output is disabled.

Wrong mode is selected for color subcarrier genlock output.

GLCO pin is not set to output the GLCO signal.

Wrong YCbCr output format

Auto-switch masks are not set correctly.

Video decoder is not in auto-switch mode.

Auto-switch polling is not enabled.

SOLUTION

Run Port95NT.EXE on the CD to install the driver.

Go to Edit→Property Sheets→TVP5154, Analog Video page, select the correct video input(s) and click Apply.

(The composite video input 1 is selected by default.)

Connect source to the correct input connector.

Go to Edit→Property Sheets→TVP5154, Output Control page, check the enable YCbCr outputs and enable clock outputs check boxes and click Apply.

Go to Edit→Property Sheets→TVP5154, Synchronization page, set the Fsc control format to RTC and click Apply.

Go to Edit→Property Sheets→TVP5154, Output Control page, set the drop down box labeled FID/GLCO (pin 23) to genlock output (GLCO) and click Apply.

Go to Edit→Property Sheets→TVP5154, Output Control page, set the YCbCr output format to 8-bit 4:2:2 YCbCr w/ITU-R BT.656 embedded sync mode and click Apply.

Go to Edit→Property Sheets→TVP5154, Mode Selection page, uncheck all standards to be included in auto-switch processing and click Apply.

Go to Edit→Property Sheets→TVP5154, Mode Selection page, set the drop-down box to multistandard and click Apply.

Click real-time polling in the Tools menu. Click Enable All and OK. This should be disabled if using a composite output.

SLEU069A –February 2006 –Revised July 2006 TVP5154EVM User's Guide 33

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