Olivetti d-color MF651, Service Manual, Page: 863 / 1053

Field Service Ver. 2.0 Jul. 2009 19. TROUBLE CODE
803
TROUBLESHOOTING
19.5.100 C2650: Main backup media access error
Relevant parts
Service EEPROM board (SV ERB) Printer control board (PRCB)
Step Action
WIRING DIAGRAM
Control signal
Location (Electri-
cal component)
1 Check the connector (CN33) on PRCB, the
connector (CN1) on SV ERB, and the har-
ness between the boards for proper con-
nection and correct as necessary. — —
2 Change PRCB
1. Turn OFF the main power switch and
replace the current PRCB with a new
one.
(When using a PRCB of another
machine in service, be sure to use a
PRCB installed in the same model.)
See P.134
2. Update the PRCB firmware.
3. After completing the firmware update,
turn OFF and ON the main power switch
and check to see that warm-up is
started.
Make sure that malfunction codes other
than C2650 or improper IU/TC place-
ment is not detected.
4. When the trouble cannot be solved, rein-
stall the removed PRCB to the original
board.
NOTE
• When taking the above steps, check
whether PRCB is defective or not
without replacing the SV ERB.
— —
3 Change SV ERB
1. Replace the current SV ERB with a new
one.
See P.141
2. Turn ON the main power switch and
check to see that warm-up is started.
(One minute is spent to prepare the new
SV ERB for use. During the period, the
control panel backlight stays off.)
Make sure that malfunction codes other
than C2650 or improper IU/TC place-
ment is not detected.
3. Make the specified readjustments.
See P.141
— —
4 If the above actions do not solve the prob-
lem, contact KMBT. — —
Y110571-1 Service Manual