Communication Related Service Call - Oki MB760 Service Manual

5.3.4

Communication related service call

[F070] Communication error between sYs board and PU board
Classification
Communication related
service call
Check item
Error code
Check firmware version
Board check
Parts to be replaced
SYS board
PU board
LED head
[F071] Communication initialization error between sYs board and PU board
Classification
Communication related
service call
Proce-
Check item
dure
1 LED head, harness
2 Check firmware
version
45641001TH Rev.1
Communication error between SYS board and PU board
• Turn the power OFF and then back ON using the main power switch,
and then check if the error code changes to another one.
• If it changes to another one, follow the procedure for the changed error
code.
• Check the version of the system firmware on the SYS board.
• Check the version of the PU firmware on the PU board.
• Check if the connector CN118, CN119 on the SYS board and the
connector CUIF0, CUIF1 on the PU board are completely inserted.
• Check if the connector pin between the SYS board (connector CN118,
CN119) and the PU board (CUIF0, CUIF1) is disconnected.
• Check if the connectors HEAD0K, HEAD1Y, HEAD2M, and HEAD3C
of the LED head are completely inserted, and the harness is
disconnected or open circuited.
• Check if the conductor patterns on the PU board and SYS board are
short circuited or open circuited
Communication initialization error between SYS board and PU board
1-1. Disconnect all the harnesses of the LED heads, and then turn
the power ON. Check if the error changes to another service call.
(HEAD0K, HEAD1Y, HEAD2M, HEAD3C)
1-2. If the error does not change to another service call in step 1-1, go to
step 2. If the error changes to another service call, follow the steps
below.
1-3. Connect the harnesses of the LED head to the PU board single
color at a time, and then turn the power ON to identify the LED head
in error. Check if F071 occurs. Place the parts causing the error.
Y color: HEAD1Y
M color: HEAD2M
C color: HEAD3C
K color: HEAD0K
• Check the version of the system firmware on the SYS board.
• Check the version of the PU firmware on the PU board.
Oki Data CONFIDENTIAL
Error content
Measures
Remark
Error content
Measures
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