Oki IP-6620 Maintenance Manual page 253

5.5.19 System Error 1800: PTG Register R/W Error
<Description>
Could not read or write normally the PTG register.
This error is detected through the process below:
(1) The printer is started;
(2) The printer writes test data on the PTG register in 16-bit access; and
(3) Though the printer reads the data on the PTG register, the read data is not same as the
written data.
<Faulty part>
(1) Carriage cable (FFC): CARRIAGE FFC, MW
(2) PCB-ASSY-HCB1M
(3) PCB-ASSY-IPB5-100
(4) Robot cable: ROBOT CABLE, MW
<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.
Note:
For this error occurs, be sure to perform the following items 1 to 4.
No
1 The width of the V-shaped folded
part on the PCB-ASSY-HCB1M-side
FFC
FFC's external damage
2
3 FFC's connector connection
Robot cable's connector connection
4
5 PCB-ASSY-HCB1M
6 PCB-ASSY-IPB5-100
7 FFC
8 Robot cable
5-94
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
Items to be Checked
OKI Data Infotech Corporation CONFIDENTIAL
Action
Check that the width of the V-shaped folded part on the
FFC is proper. If not, adjust it. For the adjustment
procedure, see 6.8.4 PCB-ASSY-HCB1M.
Check the following to ensure that the FFC is not
damaged.
- FFC's terminal is detached from its base.
- FFC's edges have not been abraded by friction.
If the FFC is damaged, replace it.
Reconnect the FFC on both the PCB-ASSY-HCB1M side
and the PCB-ASSY-IPB5-100 side.
If the cable terminals are smeared, softly wipe them with a
soft cloth or lint-free paper dampened with ethanol before
connecting them.
Reconnect the robot cable on both the
PCB-ASSY-HCB1M side and PCB-ASSY-ACT3 side.
Before connecting, check that the connector terminals and
cable connection part are not disconnected. If a
connection failure is found, replace the robot cable
Replace the PCB-ASSY-HCB1M.
Replace the PCB-ASSY-IPB5-100.
Replace all four FFCs.
Replace the robot cable.