Service manual

Page 6-25
Section 6. Replacement Procedures
PN 9001080
Rev. A
SATO M-8485Se Standard Print Engine
Service Manual
Replacing the Ribbon Drive Clutch Washers
STEP PROCEDURE
1b. To each spindle, install Item 11 Plate with teeth facing outward and align the
plate with the peg on the Ribbon Shaft Flange.
2b. Install Item 10 Felt Friction Washer onto the Ribbon Shaft and slide it
against Item 11 Plate.
3b. Install (1) ea. Item 9A or 9B Rewind and Unwind Disc Plates onto Item 8
Ribbon Bosses. Align the hole in the Disc Plates over the pegs on Item 8.
The teeth/slots on the unwind disc plate must be facing away from the
Ribbon Boss. Install this assembly onto the Ribbon Shaft and slide it against
the felt friction washer.
4b. Install Item 6 Oil-less Dry Metal Washer onto the ribbon shaft with the
copper side facing inward (the black carbon side will face outward). Align
Item 6 Washer with the peg on #8 Ribbon Boss.
5b. Install Item 5 Disc onto the ribbon shaft with the smooth side facing Item 6
Washer, (one side of the disc is smooth and the other side has sharp edges).
6b. Install Item 4 Spring onto the ribbon shaft.
7b. Install Item 3 Stopper Collar onto the ribbon shaft.
8b. Screw the Item 2 Adjustment Nut clockwise into the end of the ribbon shaft.
9b. Replace #1 Screw and tighten.
10b. Close the printer halves and replace the locking screw.
11b. Reconnect the power cable.
To reassemble the spindles, perform the following steps:
NOTE: Do not over-tighten the adjustment nut since this
screw is used to adjust the clutch tension. Adjust the
clutch tension as outlined in Section 5-2.