Oki IP-6620 - Solve print quality issues

OKI Data Infotech Corporation CONFIDENTIAL
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
5-91
5.5.15 System Error 1650: EEPROM Initialization Check Error
<Description>
Could not normally read the parameters stored in the EPROM on the PCB-ASSY-IPB5-100.
This error is detected when performing keyword check and checksum in the parameter area after
turning the printer on.
<Faulty part>
(1) IC(EEPROM)
(2) PCB-ASSY-IPB5-100
<Action>
Restart the printer.
If the error persists, check the Items to be Checked on the table below, and perform the actions
starting from the top until the problem is solved.
No
Items to be Checked
Action
1
EEPROM
Re-insert the EEPROM.
If the problem persists, replace the EEPROM.
2
PCB-ASSY-IPB5-100
Replace the PCB-ASSY-IPB5-100.
5.5.16 System Error 1660: RSM Mask Memory Read/write Error
<Description>
The PCB-ASSY-IPB5-100’s RSM mask memory was not read or written normally.
This error is detected through the process below:
(1) The printer is started;
(2) The printer writes test data on the mask memory; and
(3) Though the printer reads the data on the band memory, the read data is not same as the
written data.
<Faulty part>
PCB-ASSY-IPB5-100
<Action>
Restart the printer.
If the error persists, check the Items to be Checked on the table below, and perform the actions
starting from the top until the problem is solved.
No
Items to be Checked
Action
1
Firmware
Upgrade the firmware to the latest version.
2
PCB-ASSY-IPB5-100
Replace the PCB-ASSY-IPB5-100.