Oki IP-6620 Maintenance Manual page 185

(CIS model)
(With the ink box cover closed)
NO CC CARTRIDGE
OPEN INK BOX COVER
(With the ink box cover open)
SET CC INK CARTRIDGE
<Description>
Possible causes are as follows:
- One ink cartridge is not installed to the
printer.
- The contact of the electrode used to check
that an ink cartridge is installed is
defective.
- The harness, connectors, or boards
connected to the electrode above are
defective.
<Action>
Check the Items to be Checked on the table below, and perform the actions starting from the top
until the problem is solved.
No
1
Firmware
2 Contact between the ink cartridge
electrode and the PCB-ASSY-INK4
connector.
PCB-ASSY-INK4's connector
3
connection
4 PCB-ASSY-ACT3's connector
connection
5
CABLE(Cartridge)-ASSY(MW)'s
condition
6 INKBOX-UNIT-MW's condition
7
PCB-ASSY-ACT3
5-26
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
CC: Color, position
7-color mode: Y, Lm, C, Gy, K, Lc, M
6-color mode: Y, Lm, C, K, Lc, M
Action
Upgrade the firmware to the latest version.
Reinstall the ink cartridge. If the problem is not solved,
softly wipe the ink cartridge electrode and the
PCB-ASSY-INK4 connector using a soft cloth or lint-free
paper dampened with ethanol.
Check that the harness connectors are connected to the
PCB-ASSY-INK4's connector securely.
Check that the harness connectors are connected to the
PCB-ASSY-ACT3's connector securely.
Check that the condition is proper as follows.
- The connectors are connected securely.
- The cable is not disconnected.
- The harness is not pinched by other parts.
- The cable jacket is not damaged.
Check that no part is misaligned, worn, or damaged.
Reassemble the ink box or replace a part as necessary.
Replace the PCB-ASSY-ACT3.