Doug Fleenor Design 1211 User Manual
Page 5
TROUBLESHOOTING
We hope your DMX512 Isolated Splitter/Amplifier never needs service. If it does, the information
presented here may be of assistance.
Access to the inside of the unit is accomplished by removing the top cover.
The input fuse is a 1/2 amp 3AG fast blow fuse.
The output drivers are 75176B devices. A 75176A will work but is not as rugged.
The input receiver is a 75179B.
The optical isolator is a 6N137.
Schematics are available from Doug Fleenor Design.
WARRANTY
Products manufactured by Doug Fleenor Design carry a five year parts and labor warranty against
manufacturing defects. It is the customer's responsibility to return the product to Doug Fleenor
Design (at the customer's expense). Doug Fleenor Design will repair the unit and return it to the
customer (at Doug Fleenor Design's expense). If a trip is necessary to the customer's site to solve
a problem, the expenses of the trip must be paid by the customer.
Note that this warranty is against Manufacturing Defects. It does not include damage due to misuse
or abuse. Most non-warranty repairs are made for a fixed $30.00 fee.