Ricoh VT6000 Manual page 180

When a service code (E-XX) is displayed in the guid-
ance display
Turn the main switch off and on. If a service code appears again, contact
your service representative.
If a service code appears on the guidance display after you turn the main switch
off and on a few times, do not continue turning it on and off. Leave the machine
off.
E04 might be displayed when you make masters continuously using the originals
that have solid images. In this case, turn off the main switch and wait for a while.
TROUBLESHOOTING
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