Exterior Covers

SM 4-9 M065/M066

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4.3.6 INNER LEFT UPPER COVER

1. Right cover ( p.4-4)

2. Top cover ( p.4-6)

3. Open the left cover.

4. Inner left upper cover [A] ( x 2)

Exterior Covers

M065/M066 4-10 SM

4.3.7 INNER LEFT FRONT COVER

1. Left cover ( p.4-3)

2. Inner left upper cover ( p.4-9)

3. Inner left lower cover ( p.4-11)

4. Turn the lock lever [A] counterclockwise, and then open the drum securing plate [B].

5. Inner left front cover [A] ( x 2)

Exterior Covers

SM 4-11 M065/M066

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4.3.8 INNER LEFT REAR COVER

1. Left cover ( p.4-3)

2. Rear cover ( p.4-5)

3. Inner left rear cover [A] ( x 2)

4.3.9 INNER LEFT LOWER COVER

1. Open the left cover.

2. Inner left lower cover [A] ( x 3)

Exterior Covers

M065/M066 4-12 SM

4.3.10 INNER RIGHT FRONT COVER

1. Right cover ( p.4-4)

2. Top cover ( p.4-6)

3. Connector cover [A] (hook)

4. Disconnect the six harnesses [A] ( x 1).

5. Release the inner right front cover [A] ( x 2).

Exterior Covers

SM 4-13 M065/M066

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6. Inner right front cover [A] ( x 6)

4.3.11 INNER RIGHT REAR COVER

1. Rear cover ( p.4-5)

2. Right cover ( p.4-4)

3. Inner right rear cover [A] ( x 3)

Laser Optics

M065/M066 4-14 SM

4.4 LASER OPTICS

Turn off the main power switch and unplug the machine before beginning any of

the procedures in this section. Laser beams can cause serious eye injury.

4.4.1 CAUTION DECAL LOCATIONS

Caution decals are attached as shown below

Make sure to turn off the main power switch and disconnect the power plug from

the power outlet before beginning any disassembly or adjustment of the laser unit.

This machine uses a class IIIb laser beam with a wavelength of 657 - 663 nm and

an output of 15 mW. The laser can cause serious eye injury.

4.4.2 LASER UNIT

Before installing a new laser unit, remove the polygon motor holder bracket and

the tag from the new unit.

Before removing the old laser unit

Do the following settings before removing the laser unit. These are adjustments for skew

adjustment motors in the laser unit, main scan start position, and laser diode power.

1. Plug in and turn on the main power switch of the machine.

2. Enter the SP mode.

Laser Optics

SM 4-15 M065/M066

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3. Execute SP2-220-001 to clear the mirror positioning motor setting for Cyan.

4. Execute SP2-220-002 to clear the mirror positioning motor setting for Magenta.

5. Execute SP2-220-003 to clear the mirror positioning motor setting for Yellow.

6. Execute SP2-180-004 for clearing main scan start position adjustment setting.

7. Execute SP2-153-001 for clearing LD power.

8. Exit the SP mode.

9. Turn off the main power switch and disconnect the power cord of the copier.

Recovery procedure for no replacement preparation of laser unit

If you did not do the procedure in "Before removing the old laser unit" before removing the

laser unit, you must do the following.

1. Turn off the main power switch and disconnect the power cord of the copier.

2. Controller box ( p.4-143).

3. Disconnect the harness [A] of the skew correction motor.

4. Do steps 1 to 9 of "Before removing the old laser unit".

5. Connect the harness [A] and reinstall the controller box.

6. Plug in and turn on the main power switch.

Laser Optics

M065/M066 4-16 SM

Removing the laser unit

1. Rear cover ( p.4-5)

2. Right cover ( p.4-4)

3. Controller box ( p.4-143)

4. Development fan duct ( p.4-36 "Development Fan")

5. Bracket [A] ( x 1)

6. Pull out the laser unit [A] ( x 2, x 1, x 1).

Laser Optics

SM 4-17 M065/M066

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After installing a new laser unit

Do the following adjustment after installing the new laser unit.

1. Plug in and turn on the main power switch.

2. Check that the settings of SP2-119-001, -002 and -003 are "0". If these settings are not

"0", execute "Recovery procedure for no replacement preparation of laser unit"

described above.

If this step is not correctly done, an image problem may occur on printouts.

3. Input the SP settings on the sheet provided with a new laser unit.

SP2-101-001: Color Registration Adjustment for Black

SP2-102-013, 015, 017, 019: Magnification Adjustment Main Beam Pitch Dot for

each color

SP2-102-014, 016, 018, 020: Magnification Adjustment Main Beam Pitch Subdot

for each color

SP2-102-001: Main Magnification for Black and Standard line speed

SP2-102-002: Main Magnification for Black and Medium line speed

SP2-102-003: Main Magnification for Black and Low line speed

SP2-104-001 to -008: :LD Initial Power Adjustment for each color

The printed values [A] are different for each laser unit.

If the SP settings shown above are not input correctly, it may cause color

registration errors.

4. Print the test pattern (14: 1-dot trimming pattern in the SP2-109-003).

5. Check that the left and right trim margin is within 4 ± 1 mm. If not, change the standard

value for the main scan magnification adjustment.

6. Select "0" with SP2-109-003 after printing the "1-dot trimming pattern.

7. Do the line position adjustment.

Laser Optics

M065/M066 4-18 SM

First do SP2-111-003.

Then do SP2-111-001.

To check if SP 2-111-001 was successful, watch the screen during the process. A

message is displayed at the end. Also, you can check the result with SP 2-194-010

to -012.

8. Exit the SP mode.

4.4.3 LASER UNIT FAN

If the optional tray heater is installed in the machine, the HVPS: CB bracket may

be still hot. Wait until the HVPS: CB bracket cools before doing this procedure.

1. Rear cover ( p.4-5)

2. Right cover ( p.4-4)

3. Controller box ( p.4-143)

4. HVPS: CB bracket ( p.4-148 "HVPS: CB Board")

5. Laser unit fan [A] ( x 1, hooks)

When installing the laser unit fan

Make sure that the laser unit fan is installed with its decal facing upward.

Laser Optics

SM 4-19 M065/M066

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4.4.4 LDU SHUTTER MOTOR

1. Duplex unit ( p.4-116)

2. Paper feed unit ( p.4-94)

3. Release the LDU shutter motor [A] ( x 3).

4. LDU shutter motor [A] ( x 2, x 1).