Oki IP-6620 Maintenance Manual page 252

5.5.18 System Error 1700: ABC Register Read/write Error
<Description>
The printer could not read or write correctly the data on the PCB-ASSY-ACT3's ABC register.
This error is detected through the process below:
(1) The printer is started;
(2) The printer writes test data to the register in 8-bit access; and
(3) Though the printer reads the data from the register, the read data is not same as the
written data.
<Faulty part>
(1) PCB-ASSY-ACT3
(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
1 Firmware
2 Cable between the ACT3 and IPB5
3 PCB-ASSY-ACT3
4 PCB-ASSY-IPB5-100
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Upgrade the firmware to the latest version.
Reconnect the CABLE(ACT-IPB-IF)-ASSY(MW) to the
ACT3 and the IPB5.
Replace the PCB-ASSY-ACT3.
Replace the PCB-ASSY-IPB5-100.
Action
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