Toshiba e-STUDIO556 Service Manual page 711

Multifunctional digital systems

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[F901] Engine speed error (first time)

[F901_1] Engine speed error (after the first time)

Classification

Other service call

Replace parts

The speed information of the LGC board is damaged.

The LGC board in which is not corresponding to the equipment model is

The F901_1 error occurs when the power is turned ON if the LGC board is

not replaced in the correct procedure after the F901 error.

Check if there is no problem in the harness for connecting to the following

LGC board: CN341

Check if the LGC board in which is corresponded to the equipment model

is installed.

Check if the label color of the LGC board (indicated in the figure with the

arrow) is corresponded to the equipment model (indicated on the rating

e-STUDIO556: White

e-STUDIO656: Yellow

e-STUDIO756: Pink

e-STUDIO856: Blue

e-STUDIO557: White

e-STUDIO657: Yellow

e-STUDIO757: Pink

e-STUDIO857: Blue

Position of the label to be checked

If they are not corresponding correctly, replace the LGC board with the

correct one.

After replacing the LGC board, be sure to start up the equipment

with the 08 mode. The F901_1 error may occur if the equipment is

not started up with the 08 mode.

e-STUDIO556/656/756/856/557/657/757/857

ERROR CODE AND TROUBLESHOOTING