5-2. Upper Drum Assembly Replacement
5-2. Upper Drum Assembly Replacement
As for replacement time, refer to OSection 2. Periodic Maintenace and Inspection�.
Outline
Replacement
1. Remove the Video Head Cleaner Assembly
2. Disconnect the Flexible Board (CN2/SE-461 Board)
3. Remove the Brush Slip Ring Assembly
4. Remove the Height Determing Plate
5. Remove the Upper Drum Assembly
6. Cleaning (Upper Drum Assembly Mounting Surface, Lower Drum Flange
Surface, Tape-running Surface, Lead Surface, and Contacting Points)
7. Attach the Upper Drum Assembly
8. Cleaning (Height Determining PlateOs Lower Surface and Upper Surface of
Drum Support)
9. Attach the Height Determing Plate
10. Cleaning (DR-205 BoardOs Contacting Points and Brush Slip Ring Assembly
Mounting Surface)
11. Attach the Brush Slip Ring Assembly
12. Connect the Flexible Board (CN2/SE-461 Board)
13. Cleaning (Rotary Heads and Upper DrumOs Tape-running Surface)
14. Attach the Video Head Cleaner Assembly
Adjustment after Replacement
15. Confirm the Tape Running (Refer to Section 6-1-2.)
16. Confirm the Video Tracking (Refer to Section 6-1-3.)
17. Confirm the CTL Head Height (Refer to Section 6-1-4.)
18. Adjust the CTL Head Position (Refer to Section 6-1-5.)
19. Confirm the AT Head Height (Refer to Section 6-1-6.)
20. Adjust the AT Head Position (Refer to Section 6-1-7.)
21. Perform the Electrical Adjustments after Drum Replacement
(Refer to Section 7-2.)
Note
When the rotary head tip was worn or damaged, replace the whole upper drum
assembly. It cannot be replaced only head tip.
5-8DNW-75/75P |
ACEC
