Oki IP-6620 Maintenance Manual page 251

5.5.17 System Error 1670: ATG Register Read/write Error
<Description>
The PCB-ASSY-IPB5-100's ATG register 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 ATG register; and
(3) Though the printer reads the data on the ATG register, 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
5-92
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.