Stryker MMP200, Инструкция по установке и обслуживанию

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16.6 Can Bus Troubleshooting
Caution
Follow ESD prevention procedures.
16.6.1 Light Block Diagram
Troubleshooting the light is simplified because
there are two completely independent systems.
The best method for testing is to look at the
symptoms and swap cables to narrow down the
problem. Here are steps to try:
1. Swap Power Cables – check if problem is
in light head or power supply box.
2. Swap CAN Control Cables – check if prob-
lem is in control wiring
3. Swap Touch Panel Cables – check if prob-
lem is in Touch Panel or wiring between
power supply box and Touch Panel
Visum Lighting uses CAN bus technology to control the light and In-Light Camera. CAN bus is a se-
rial digital protocol similar to RS-232. It is carried differentially over twisted pair wiring. In our appli-
cation it is actually carried over two coaxial cables using the two center conductors.
The shields are used but grounded at different points through the signal path and DO NOT make a
continuous electrical path from the power supply box to the Light Control Circuit Board. Most control
problems are due to a broken CAN Bus connection. This will be evident by the last LED on the Light
Control Touch Panel blinking.
To troubleshoot this issue take off the cover of the light head and perform continuity checks from the
light head back to the power supply box.
The CAN+ is on the brown coaxial center conductor and the CAN – is on the clear center conductor.