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91-636-00 IOD in Degraded Mode RAP
91-636-00 The machines print quality maintenance software periodically runs corrective proce-
dures to maintain output quality. This error indicates that these procedures are suspended due
to unrecoverable errors.
This procedure describes how to return a machine to normal operation from fault tolerant
mode, also known as IOD degraded mode. Fault tolerant mode is indicated by the fault code
91-636-00 or by the service code displayed on the UI, refer to the
Initial Actions
•
Check the PEST error log (dC123) for component failures.
•
Check service code displayed on the machine information UI, refer to
•
Check the fault history (dC122) to verify fault tolerant mode.
•
Check that the EPC memory PWB is installed and seated correctly,
Procedure
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to
GP
14. Disconnect the power cord. Electricity can cause
death or injury. Moving parts can cause injury.
If the IOD sensor detects an imaging problem, one or more attempts are made to correct the
error. If the machine is unable to self-correct specific imaging errors, it suspends operation of
one or more of these normal print-quality adjustment routines. Refer to
1.
Enter
dC131
NVM Read/Write and check the status of each routine by entering the NVM
chain-link listed in
Table
1.
2.
Check if the routine is in degraded state by checking the status value in
Read/Write with the value in
Table
NVM
Status
Adjustment Routines
Value
NVM Description
dC971
Head to Head
0
Optimal
Alignment
dC971
Head to Head
1
Non-Optimal
Alignment
dC971
Head to Head
2
Auto Disabled
Alignment
dC971
Head to Head
3
Manually Disabled Yes
Alignment
dC971
Head to Head
4
Manually Enabled No
Alignment
dC977
Drum Runout
0
Optimal
dC977
Drum Runout
1
Non-Optimal
ColorQube® 9303 Family
OF 12
Service Code RAP.
OF
12.
PL 3.11 Item
WARNING
Table
1.
2.
Table 2 Routine Status Value and Description
IOD
Degraded Actions
No
No
no
Run the routine
Yes
Run the routine
Set status to 4 to Manually Enabled and run the routine
Run the routine
No
No
Yes
Run the routine
3.
If the routine is found to be in degraded mode. Refer to
as required.
4.
Check and clear all related faults listed in
the status to optimal.
NOTE: The optimal value for all settings is 0.
5.
When the routine is returned to optimal, recheck the current status values of the other
routines.
6.
Repeat this procedure (1 through to 5) until all the routines report a NVM status value of
0.
Table 1 Print Quality Management Status Check
Adjustment Routine
21.
Head to Head Align-
ment Adjustment
Drum Runout Calibra-
tion
Printhead Uniformity
TRC Generation
Y-dot position
dC131
NVM
February 2013
2-383
Table 2
dC122
by using the appropriate RAP to return
NVM
NVM
NVM
Manual
Chain
Link
Settings
Procedure Comment
490
019
0 - 4
dC971
Manual and Automatic
Refer to
tings
492
069
0 or 1
dC977
Refer to
tings
490
008
0 - 4
dC972
Manual and Automatic
Option 3
Refer to
tings
490
011
0 - 4
dC972
Refer to
Option 4
tings
490
005
0 - 4
dC972
Manual and Automatic
Option 5
Refer to
tings
Do not manually write
status value to NVM
Do not write
Do not write
Do not write
-
-
Do not write
Do not write
and perform the actions
dC131
for NVM set-
dC131
for NVM set-
dC131
for NVM set-
dC131
for NVM set-
dC131
for NVM set-
Status Indicator RAPs
91-636-00
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