3
DNW-A220
DNW-A220P
4. Periodic Maintenance and Inspection
4-1. Periodic Maintenance..................................................................................4-1
4-1-1. Index...........................................................................................4-1
4-1-2. Periodic Replacement and Check Item Table ............................4-2
4-1-3. Hours Meter ...............................................................................4-3
4-2. Cleaning ......................................................................................................4-4
4-2-1. Using Cleaning Tape ..................................................................4-4
4-2-2. General Information for the Use of Cleaning Cloth...................4-4
4-2-3. Cleaning of Video Heads and Tape Running Surface
of Upper Drum ...........................................................................4-5
4-2-4. Cleaning of Lead Surface and Tape Running Surface
of Lower Drum...........................................................................4-6
4-2-5. Stationary Heads and Tape Cleaner Cleaning............................4-7
4-2-6. Tape Running System Cleaning .................................................4-8
4-3. Cares After Outdoor Use.............................................................................4-9
4-4. Video Head Tip Protrusion Check ............................................................4-10
4-4-1. Head Tip Protrusion Measurement ..........................................4-10
5. Spare Parts
5-1. Notes on Repair Parts..................................................................................5-1
5-2. Exploded Views .......................................................................................... 5-2
5-3. Pulg-in Boards.............................................................................................5-3
5-4. Optional Accessories List ...........................................................................5-4
5-5. Fixtures List ................................................................................................5-5
6. Overall Block Diagram and Circuit Description
Appendix A Setting Check Sheet