Service manual

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(Notes on Service Part Replacement and Disassembling / Reassembling - cont’d-)
Service part Notes on replacement
*1
Adjustment / settings
*2
Operation check
Carriage Lift Part
(QC1-2298, 2301, 2657,
4361, 4527, 4621, and
4632)
At replacement:
1. Apply grease to
QC1-4527 (lift input,
gear)/2301 (bushing)
See Section 3.4.
Adjustment / Settings,
(3) Grease application.
- Service test print
- (CD-R test print)
Timing slit strip film
(QC1-4520)
Timing slit disk film
(QC1-2484)
- Upon contact with the
film, wipe the film with
ethanol.
- Confirm no grease is on
the film. (Wipe off any
grease thoroughly with
ethanol.)
- Do not bend the film.
After replacement:
1. Perform the print head
alignment in the user
mode.
- Service test print
Print head
(QY6-0055)
After replacement:
1. Perform the print head
alignment in the user
mode.
- Service test print
*1: General notes:
- After repair for trouble concerning printing or the print head re-installation, empty ink in the print
head once, and return the printer to users.
(See Section 3.3. Special Notes on Repair Servicing (2) Notes on after repair for trouble concerning
printing or re-installation of the print head.)
- Make sure that the flexible cables and wires in the harness are in the proper position and connected
correctly. See Section 3.3. Special Notes on Repair Servicing, (1) Flexible cable and harness wiring,
connection, for details.
- Do not drop the ferrite core, which may damage it.
- Protect electrical parts from damage due to static electricity.
- Before removing a unit, after removing the power cord, allow the printer to sit for approx. 1 minute
(for capacitor discharge to protect the logic board ass’y from damage).
- Do not touch the timing slit strip film and timing slit disk film. No grease or abrasion is allowed.
- Avoid soiling the unit with ink.
- Protect the housing from scratches.
- Exercise caution with the red screws, as follows:
i. The red screws of paper feed motor may be loosened only at replacement of the paper feed
motor unit (DO NOT loosen them in other cases).
ii. DO NOT loosen the red screws on both sides of the main chassis, securing the carriage
shaft positioning (they are not adjustable in servicing).
- Exercise caution with replacement of the bottom case/output tray unit (only for the i9950 model)
When replacing QM2-1328 (the bottom case/output tray unit), replace QC1-4558, 4559, 4560,
XD2-1100-322, and 2300-602.
(Once the E-ring is removed, it is not possible to use it again.)
3.3 Special Notes on Repair Servicing
(1) Flexible cable and harness wiring, connection
Exercise care when handling the flexible cable and harness wiring. Incorrect wiring may cause ignition or
emission of smoke. Refer to the PIXUS9900i/i9900/i9950 Parts Catalog.
(2) Notes on after repair for trouble concerning printing or re-installation of the
print head
After repair for trouble concerning printing or the print head re-installation, empty ink in the print head
once, and return the printer to users. This is aimed at preventing non-ejection of ink at initial printing.
Operational procedures are as follows.