Manual for LTC 2813/90

Manual for LTC 2813/90

Brand: BOSCH

Category: Security Systems

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: April 20, 2026, 7:46 p.m.

Manual Publish Date: 2003-08-06

Warranty Information

None

Basic Operation

Powering On/Off: The power On/Off switch is located on the front panel. Press to turn the monitor on; the green LED will illuminate. Press again to turn off.

Front Panel Controls (behind door):

  • Volume: Adjusts audio level.
  • Sharpness: Adjusts picture sharpness.
  • Brightness: Adjusts picture brightness.
  • Contrast: Adjusts picture contrast.
  • Color: Adjusts overall color intensity.
  • Tint (NTSC only): Adjusts skin tone towards green or red.
  • Video Input A/B Selector: Selects between Video Input A or Video Input B.

Rear Panel Controls:

  • Video Impedance Switches (Channel A & B): Set to 75 Ω for single connection or HiZ for looping configurations.

Troubleshooting and error codes

Problem Solution
No Power Indicated: The power plug may be loose or disconnected. Insert the power plug firmly into the socket.
Power On, No Display: (1) No video signal connected; (2) Video cable is disconnected. (1) Verify that the Video Input A/B Selector switch (FIGURE 1, Item 7) is in the correct position; (2) Check video cable for proper connection and correct accordingly.
Power On, No Sound: (1) Incorrect cable connection configuration; (2) Audio cable is disconnected; (3) Volume output is set too low. (1) Ensure that the cable connection configuration is correct (see SECTION 4.4); (2) Connect the audio cable firmly; (3) Adjust the speaker volume via the Volume control on the front panel (FIGURE 1, Item 1).
Display Jitter: The monitor may be close to a device generating a strong magnetic field. Move the device away from the monitor until the picture stabilizes.
No Color, Incorrect Color, or Dark Color: The picture control setting (e.g. Tint, Color, Brightness, or Contrast) may be set improperly. Reset each picture control setting to the mid-range level.
Unnatural Color, Irregular Color, or Distorted Picture: The monitor may be close to a speaker, magnet, or any other device generating a strong magnetic field. Move the device away from the monitor and discontinue power to the monitor. Wait at least 3 minutes, then restore power to the monitor.
Picture Overexposed: The video input signal input is not terminated. Ensure that the Video Impedance switch for the channel, on the rear panel, (FIGURE 1, Items 9 &10) is set to the 75 Ω position. This properly terminates the signal.
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