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CLASSROOM VIDEO PLAYBACK

The preferred method for video playback is through the cable system that runs from the Learning Resource Center to the various classrooms. A cable playback is indicated whenever a faculty member writes "VIDEO PLAYBACK" on the Equipment Loan Form, but does not check "video player."  A video player is ordered only when an instructor wants to have a video unit physically moved to the classroom.

Because the number of VCR's is limited, the LRC encourages cable playback to the TV’s in the classrooms. This is the alternative to delivering VCR's to classrooms and leaving them there.. Students may request video playbacks without a faculty member signature if the playback will be through the cable system and no equipment leaves the LRC.

MAIN STEPS KEY POINTS
Turn on the VIDEO AMP. A WHITE light comes on. Video amp must be turned on in order for the classroom to receive TV picture.
At the AUDIO and VIDEO patch boards, plug in both audio and video cables for the video cassette that you will use. Two video cassette units are available. They are color-coded. Video cassette Unit 1 is coded GREEN. VCR Unit 2 is coded RED. 

Each unit has both an AUDIO and a VIDEO cable. Each must be plugged into a separate AUDIO and VIDEO input jack on the patch boards. There are AUDIO and VIDEO inputs for each classroom. 

Be certain that the two input jacks used are for the room requiring the video playback. The video and audio cables are marked "V " and " A" respectively. These color-coded cables may be plugged in and unplugged as needed. 

These are the only cable connections that should ever be changed by LRC Assistants. However, push in any unlabelled connection if it appears to be loose.

Operate the VCR in the usual manner. The LRC Assistant must study the instruction manuals for all of the video machines in the LRC and be able to troubleshoot when equipment fails. If a problem occurs with a particular video cassette unit, be prepared to switch the tape to the other unit.
Turn on the TV monitor which ha the same color code as the VCR. The picture will appear on either channel 4 or channel 6 of the TV, depending on the signal sent to the TV by the video cassette unit. The monitor TV’s receive their signals by RF connections, which is separate from the connections to the cable system. Therefore, picture and sound from the monitor are not necessarily indicative of the quality of the signal going to the classroom.
Check for classroom reception . Use the intercom to make sure that the audio is reaching the classroom. The volume must be turned up on the classroom TV set. 

Basic troubleshooting:

  • If neither audio nor video is being received in a classroom, ask the instructor if the set is plugged in and turned on. 
  • The classroom TV’s are not affected by the channel selector switch on the back of the classroom TV. 
  • The black video cable in the classroom must be connected to the VIDEO IN input. 
  • The gray audio cable in the classroom must be connected to either AUDIO IN or PHONO IN, depending on the model of the TV. 
  • On the back of each set in the lower left is a selector switch which must be set for CCTV or EXTERNAL VIDEO, depending on model. Regardless as to how the switch is labeled, the switch must be in the DOWN position. 

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