Oki IP-6620 Maintenance Manual page 248

5.5.13 System Error 1630: Band Memory Read/write Error
<Description>
Could not read or write normally the SDRAM (band memory) on the PCB-ASSY-IPB5-100 from
the CPU.
This error is detected through the process below:
(1) The printer is started;
(2) The printer writes test data on the band 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
1 Firmware
2 PCB-ASSY-IPB5-100
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Action
Upgrade the firmware to the latest version.
Replace the PCB-ASSY-IPB5-100.
5-89