Oki IP-6620 Maintenance Manual page 247

5.5.11 System Error 1610: Flash Check Sum Error
<Description>
Could not read normally the programs stored in the flash ROM.
This error is detected when performing checksum in the program area after turning the printer on.
<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
1 Firmware
2 PCB-ASSY-IPB5-100
5.5.12 System Error 1620: PCB-ASSY-IPB5-100 Initialization Error
<Description>
The PCB-ASSY-IPB5-100 is not initialized.
This error is detected when the PCB-ASSY-IPB5-100's SHA-1 code was not read correctly after
starting the printer.
<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
1 Firmware
2 PCB-ASSY-IPB5-100
5-88
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Action
Upgrade the firmware to the latest version.
Replace the PCB-ASSY-IPB5-100.
Action
Upgrade the firmware to the latest version.
Replace the PCB-ASSY-IPB5-100.