Canon MP780, MP760, MP750, iP8500, iP6000D Service Manual

Canon

Service Information Notice

Consumer Imaging Group, Service Div .

PRODUCT(S): SFP: PIXMA iP3000/4000/4000R/5000/6000D/8500

MFP: PIXMA MP750/760/780

AFFECTED: All Units

DESCRIPTION: 5 Alternating Blinks (SFP) / ##356 (MFP) - ASF Cam Sensor Error

SOLUTION(S): Adjust the Screws & Main Case Unit

Movement (i.e. from shipping) may cause the plastic guide to move away from the chassis. When this
occurs, the gears cannot rotate properly causing a grinding noise and 5 alternating blinks (SFP) or ##356
(MFP) - ASF Cam Sensor Error.

ProceduresProcedures

Procedures

ProceduresProcedures

Step 1: Remove the Left and Right Covers and the Main Case Unit (main cover).
Step 2: Remove the 4 mounting screws from the Chassis.
Step 3: Remove the Main Unit from the Bottom Case.
Step 4: Turn the Main Unit over (upside down) and place on work surface as shown in Figure 1.
Step 5: Inspect the ASF section of the Main Unit for a gap between the white plastic guide and the Chassis

(Figure 2).

below.
Step 6: Disconnect the appropriate cables and remove the Logic Board from the Chassis.
Step 7: Loosen (do not remove) the 4 mounting screws (the mounting screws can be found behind the

logic board) on the Chassis as shown in Figure 3.
Step 8: Re-seat the white plastic guide so it sits flush against the Chassis. The tip of the white plastic

guide should sit slightly inside the

mounting screw hole. When seated

correctly, the gap will no longer be

present as shown in Figure 4.
Step 9: Tighten the 4 mounting screws without

causing the plastic guide to shift.
Step 10: Reassemble the printer and retest.

Note:

Number: 5650 Date: 6/14/05 Page: 1 of 1

The size of the gap varies. Even if the gap is not visible, complete the steps

Figure 2: Incorrect
Gap Between Plastic Guide & Frame

Figure 1: Plastic Guide on the Bottom of Main Unit

L

Screw forScrew for

Screw for

Screw forScrew for

Plastic GuidePlastic Guide

Plastic Guide

Plastic GuidePlastic Guide

Figure 3: Four Mounting Screws
(right side up)

Figure 4: correct
No Gap Between Plastic Guide & Frame