Sony DNW-A22 Maintenance Manual page 5

5. Periodic Maintenance and Inspection
5-1. Periodic Maintenance .................................................................................. 5-1
5-2. Cleaning ...................................................................................................... 5-5
5-3. Video Head Tip Protrusion Check ............................................................ 5-13
6. Replacement of Plug-in Boards
6-1. Service Overview for Plug-in Board Replacement ..................................... 6-1
6-2. APR-12 Board Replacement ....................................................................... 6-9
6-3. DM-89 Board Replacement ...................................................................... 6-19
6-4. EQ-56 Board Replacement ....................................................................... 6-68
6-5. SS-63 Board Replacement ........................................................................ 6-75
6-6. TBC-23 Board Replacement ..................................................................... 6-78
DNW-A22/A22P
5-1-1. Index ........................................................................................... 5-1
5-1-2. Periodic Replacement and Check Item Table ............................ 5-2
5-1-3. Hours Meter ............................................................................... 5-4
5-2-1. Cleaning using Cleaning Tape ................................................... 5-5
5-2-2. General Information for Cleaning using Cleaning Cloth ........... 5-5
5-2-3. Tape Running Surface of Upper Drum
and Video Heads Cleaning ......................................................... 5-7
5-2-4. Tape Running Surface of Lower Drum
and Lead Surface Cleaning ........................................................ 5-8
5-2-5. Stationary Heads Cleaning ......................................................... 5-9
5-2-6. Tape Running System and Tape Cleaner Cleaning.................. 5-10
5-2-7. Fan Motors Cleaning ................................................................ 5-11
5-2-8. Cassette Compartment and Cassette Supports Cleaning .......... 5-12
5-3-1. Head Tip Protrusion Measurement .......................................... 5-13
5-3-2. Brush Slip Ring Assembly Removal/Reinstallation ................ 5-16
6-1-1. Notes on Plug-in Board Replacement ........................................ 6-1
6-1-2. Service Action before/after Plug-in Board Replacement ........... 6-2
6-1-3. Plug-in Board Pulling out/Insertion ........................................... 6-3
6-1-4. Equipment List ........................................................................... 6-4
6-1-5. Content of Alignment Tapes ...................................................... 6-6
6-2-1. Replacement Procedure .............................................................. 6-9
6-2-2. Electrical Adjustments ............................................................. 6-10
6-3-1. Replacement Procedure ............................................................ 6-19
6-3-2. Electrical Adjustments ............................................................. 6-20
6-4-1. Replacement Procedure ............................................................ 6-68
6-4-2. Electrical Adjustments ............................................................. 6-69
6-5-1. Setting of DIP Switches ........................................................... 6-75
6-5-2. Error Logging Data Clear and Calendar/Clock Setting ........... 6-76
6-6-1. Replacement Procedure ............................................................ 6-78
6-6-2. Electrical Adjustments ............................................................. 6-79
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