Ribbon Drive (Rd) Assembly - Epson 890N - FX B/W Dot-matrix Printer Service Manual

EPSON FX-890/2190

4.3.14 Ribbon Drive (RD) Assembly

1. Remove the Printer Mechanism. (p.80)
2. Remove the Platen. (p.79)
3. Remove the hexagon nut and the washer securing the LEVER,G,ADJUST to the
SHAFT,CR,GUIDE, and remove the lever.
4. Remove the BUSHING,PARALLEL,ADJUST to turn the SHAFT,CR,GUIDE.
(See Figure 4-26)
5. Remove the harness for PG Detector.
6. Remove the harness for HP Detector from the LEFT FRAME.
7. Remove the CBS (M3x8) screw securing the Holder Pulley Driven to the LEFT
FRAME, and remove the Holder Pulley Driven.
8. Remove the 3 CBS (M3x8) screws securing the LEFT FRAME in the Printer
Mechanism, and remove the LEFT FRAME.
9. Release the tension spring. (See Figure 4-17)
10. Remove the CBS C (P2) (M3x8) screw and the CBP (M3x8) screw securing the
Ribbon Drive Assembly. (See Figure 4-31)
11. Release the Ribbon Drive Assembly engaging with the ROLLER
ASSEMBLY,DRIVE, and remove the Ribbon Drive Assembly.
After installing the Ribbon Drive Assembly, make the following
adjustments:
• Bi-d Adjustment (p.101)
• Platen Gap Adjustment (p.95)
When installing the Ribbon Drive Assembly, perform lubrication
according to "Lubrication" (p.100)
Disassembly and Assembly
(See Figure 4-26)
(See page 86)
(See page 78)
(See Figure 4-28)
(See Figure 4-28)
in Chapter 6.
Printer Mechanism Disassembly
CBP Screw (3x8)
Tightening Torque: 0.9±0.1N.m
Figure 4-31. Ribbon Drive Assembly Removal 1
Revision B
CBS C(P2) Screw (3x8)
Tightening Torque: 0.9±0.1N.m
Ribbon Drive
Assembly
FRAME, FRONT
ROLLER ASSEMBLY,
DRIVE
92