Olivetti d-COLOR P2026, Service Manual, Page: 82 / 207

Check procedures/
corrective measures
Turn the main power switch off/on to restart
the machine. If the error is not resolved,
replace main PWB (see page 1-5-29).
Replace the expanded memory (DIMM) (see
page 1-2-10).
Turn the main power switch off/on to restart
the machine. If the error is not resolved,
replace main PWB (see page 1-5-29).
Replace the engine PWB and check for cor-
rect operation (see page 1-5-26).
Turn the main power switch off/on to restart
the machine. If the error is not resolved,
replace engine PWB (see page 1-5-26).
Turn on power.
(To switch off power, first press the power
key, then turn the main power switch off.)
Code
F020
Contents
Main PWB RAM checksum
error
Causes
Defective main
memory (RAM) on
the main PWB.
Defective
expanded memory
(DIMM).
F040 Main PWB - print engine
communication error
Defective main
PWB.
Defective engine
PWB.
F050 Print engine ROM check-
sum error
Power supply in drive sys-
tem error
Defective engine
PWB.
Main power switch
was turned off
without using the
power key, or a
power failure has
occurred.
F278
1-4-28