Maintenance And Troubleshooting - Bosch MIC440AXWUD14636N Operation Manual

MIC440 Explosion-protected Camera
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Maintenance and Troubleshooting

No User-serviceable Parts
The device contains no user-serviceable parts. Maintenance and repair of this device shall only
be carried out by a Bosch service center. In the event of failure, the device should be removed
from site for repair.
On-Site Inspection
It is recommended that the device be inspected on-site every six months to check mounting
bolts for tightness, security, and any signs of physical damage. Inspection of this device shall
only be carried out by suitably-trained personnel in accordance with the applicable code of
practice (for example, EN 60097-17).
Table of Troubleshooting Issues
The table below identifies issues that could occur with the camera, and how to resolve them.
Problem
No camera control.
Video is rolling, noisy, or distorted.
Nothing appears on the screen.
The image on the screen is dim.
The contrast on the screen is too
weak.
The image on the screen flickers.
The image on the screen is distorted.
Bosch Security Systems, Inc.
Questions to Ask/Actions to Resolve the Problem
- Check the integrity of all RS-485 connections;
ensure that they are secure.
- Confirm that the address on the camera has been
set to match the address of the head-end control
system.
- Confirm that the baud rates are correct.
– Cycle the camera's power off and on.
– Check the integrity of all connectors and splices of
the composite cable.
If O.K., then:
– Contact Bosch Technical Support.
Are the power cord and line connection between the
camera and monitor made properly?
Is the lens dirty? If so, clean the lens with a soft,
clean cloth.
Adjust the contrast feature of the monitor. Is the
camera exposed to strong light? If so, change the
camera position.
Does the camera face directly into the sun or
fluorescent lighting? If so, reposition camera.
Is the power frequency set properly in sync? If the
power frequency is not set correctly, the line lock
synchronization mode cannot be used. Set the
synchronization mode to INT. (NTSC Model power
frequency in LL mode: 60 Hz.)
Operation Manual
Maintenance and Troubleshooting | en 53
2013.11 | 8.1 |