Laten Shaft Holder

Right Side Frame

Figure 4-8. Platen Removal

4.2.9 Printer Mechanism Removal

1. Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, knob and tractor unit. (See Section 4.2.3.)

2. Remove the upper housing. (See Section 4.2.4.)

3. Remove 5 CBS (M3 x 4) screws and 3 CBB (3 x 12) screws securing the shield cover to the printer mechanism and lower housing. Then remove the shield cover. (See Figure 4-6. )

4. Disconnect the harnesses from the connectors CN3, CN4, CN5, CN6, CN7, CN8, CN9, CN10 and CN11 on the C229MAIN board.

5. Remove 2 CBB (4 x 12) screws securing the front frame to the lower housing, and remove the front frame.

6. Remove 4 mechanism fixing screws, and remove the printer mechanism by lifting it up.

Once you have removed the printer mechanism, be sure to perform the platen gap and the Bi-D adjustment.

Front Frame Mechanism Fixing Screw

Printer Mechansim

Front Frame Mechanism Fixing Screw

Printer Mechansim

Mechanism Fixing Screw

Lower Housing

Figure 4-9. Printer Mechanism Removal

Mechanism Fixing Screw

Lower Housing

Figure 4-9. Printer Mechanism Removal

4.2.10 Printer Mechanism Disassembly

4.2.10.1 CR Motor Removal

1. Release the tension spring.

2. Disengage the TIMING BELT from the CR motor pinion and hang it on the hook.

3. Remove 2 SHAFT,MOUNT,CR screws securing the CR motor assembly to the FRAME,SUB,RIGHT, and remove the CR motor.

4. Remove 2 CB (M3 x 6) screws securing the CR motor to the motor bracket, and remove the CR motor.

SHAFT,MOUNT,CR

CR Motor

CR Motor Bracket

Tension Spring

SHAFT,MOUNT,CR

CR Motor

CR Motor Bracket

Tension Spring

FRAME,SUB, RIGHT

Figure 4-10. PF Motor Removal

FRAME,SUB, RIGHT

Figure 4-10. PF Motor Removal

ADJUSTMENT^

After replacing the CR motor or TIMING BELT, perform the Bi-d adjustment. (See Chapter 5.)

9CHECK point

Position the CR motor assembly on the CR motor bracket correctly as shown below;

-CR Motor Bracket

"Motor Harness

Figure 4-11. Positioning the CR Motor on the CR Motor Bracket

4.2.10.2 PF Motor Removal

1. Remove the printer mechanism. (See Section 4.2.9.)

2. Release the motor harness from the printer mechanism.

3. Set the release lever to the vertical (Rear Push tractor) or forward (Push tractor) position.

4. Remove 2 CBS (M3 x 8) screws securing the PF motor to the FRAME,SUB,RIGHT, and remove the PF motor.

^CAUTION

If the release lever is set to the Friction feeding position, PF motor is not released.

Release Lever Position

PF Motor

Release Lever Position

PF Motor

FRAME,SUB,RIGHT

Motor HarneSS Figure 4-12. PF Motor Removal

FRAME,SUB,RIGHT

Motor HarneSS Figure 4-12. PF Motor Removal

4.2.10.3 PF Gear Train Disassembly

1. Remove the printer mechanism. (See Section 4.2.9.)

3. Remove the PF motor. (See Section 0)

4. Remove the head FFC from the FRAME,SUB,RIGHT of the printer mechanism.

5. Remove 2 CBS (M3 x 8) screws securing the FRAME,SUB,RIGHT, and remove the FRAME,SUB,RIGHT.

Figure 4-13. PF Gear Train Disassembly
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