Ross ACO-4400A, User Manual, Page: 110 / 112

10–4 • Service Information ACO-4400A User Manual (Iss. 03)
Troubleshooting Checklist
Routine maintenance to this Ross Video product is not required. In the event of problems with
your ACO-4400A, the following basic troubleshooting checklist may help identify the source of
the problem. If the unit still does not appear to be working properly after checking all possible
causes, please contact your Ross Video products distributor, or the Technical Support department
at the numbers listed under the “
Contact Us ” section.
1. Visual Review — Performing a quick visual check may reveal many problems, such as
connectors not properly seated or loose cables. Check the chassis, and any associated
peripheral equipment for signs of trouble.
2. Power Check — Check the LCD Display on the front panel for the presence of power.
If the display is not illuminated, verify that the power cable is connected to a power
source and that power is available at the power main. If the display is still not
illuminated, replace the power supply with one that is verified to work.
3. Input Signal Status — Verify that source equipment is operating correctly and that a
valid signal is being supplied.
4. Output Signal Path — Verify that destination equipment is operating correctly and
receiving a valid signal.
5. Unit Exchange — Exchanging a suspect unit with a unit that is known to be working
correctly is an efficient method for localizing problems to individual units.