Ross ACO-4400A, User Manual, Page: 109 / 112

ACO-4400A User Manual (Iss. 03) Service Information • 10–3
Servicing
The ACO-4400A should require little or no in-service maintenance to the installed electronics.
Provided the measures outlined in the section “
Preventive Maintenance ” on page 10-2 are
adhered to, the product should perform for several years without any major user intervention.
Maintenance of components within the product is not usually required, except under exceptional
circumstances. If a fault occurs, please follow the instructions listed in the section
“
Troubleshooting Checklist ” on page 10-4 before attempting to service the product. The
servicing of any of the internal components requires the unit to be extracted from the bay and the
top cover removed. If your problem cannot be resolved, contact Ross Video for further advice.
If you ordered a Service Option, then removing the unit from the bay and returning it to Ross
Video for updating will provide the user with the opportunity to inspect the unit for any problems
relating to the operating conditions/environment.
Service Safety Overview
Only qualified personnel should perform service procedures. Read this section before performing
any service procedures.
• Do Not Service Alone. Do not perform internal service or adjustments of this product
unless another person capable of rendering first aid and resuscitation is present.
• Disconnect Power. To avoid electric shock, switch off the power to the instrument, then
disconnect the power cord from the mains power.
• Use Care When Servicing With Power On. Dangerous voltages or currents may exist
in this product. Disconnect power, remove battery (if applicable), and disconnect test
leads before removing protective panels, soldering, or replacing components.
• Observe Static Precautions. Servicing of this product should be performed only in a
static-safe environment, i.e. at a suitably configured ESD Workstation. Always use a
Static Grounding Wrist-Strap connected to the ESD Workstation mat while servicing the
product.
• To avoid electric shock, do not touch exposed connections.
Important Information
Regarding the use of Switch Cleaner products:
Switch Cleaner products usually contain a lubricating additive (along with the “alcohol- based”
propellant), intended to remain after spraying into relevant components.
Some equipment produced by Ross Video contains components that should not be cleaned using
these types of cleaners, due to the compact nature of the components, their operating
characteristics, or their inaccessibility. This is because push-buttons, for example, rely on clean,
dry, conductive contact surfaces to operate correctly. Applying Switch Cleaner lubricant only
serves to attract dust, or worse still could “wash-in” grease and dust, which could severely reduce
the conductivity of the component parts.
Therefore, Ross Video does not recommend the use of these Switch Cleaner products on their
equipment, and will not be held liable for any fault caused by inadvertent or unqualified use or
application of such products.