Communication Related Service Call - Toshiba e-STUDIO2006 Service Manual

8.3.15

Communication related service call

[F070] Communication error between system CPU and main CPU
Classification
Communication related service
call
Check item
Check ROM version
MAIN board
Harness
Parts to be replaced
MAIN board
Harness
8.3.16 Other service call
[F901] Engine speed error <20L/23L/25L/20H/23H/25H>
Classification
Other service call
Check item
Harness
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Communication error between system CPU and main CPU
Check the firmware version and confirm if the combination of the
system firmware and engine firmware is correct.
If the version number is not displayed, upgrade the engine firmware
data.
Board check (Check if there is any abnormality in the appearance of
parts mounted on the MAIN board)
When the ADU is installed, check the following items.
(ADU: Option for 20L/23L/25L/20H/23H/25H, 23LA/23LM/28LM)
1. Check if the harness is caught or open circuited.
2. Check the connectors and harnesses between the ADU
sensor(S8) and MAIN board (CN11).
The speed information of the MAIN board is damaged.
The MAIN board in which is not corresponding to the equipment
model is installed.
Check if there is no problem in the harness for connecting to the
following connector.
MAIN board: CN15
e-STUDIO2006/2306/2506/2007/2307/2507/2303A/2303AM/2803AM/2309A/2809A
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Error content
Measure
Remark
Error content
Measure
ERROR CODE AND TROUBLESHOOTING
8