C13F0: Laser Error; C1468: Eeprom Error - NEC NEFAX 671 Service Manual

(11) C13F0: Laser error

<Detection Timing>
• The laser output exceeds the upper limit value.
• The laser output remains lower than the lower limit value.
<Troubleshooting Procedures>
PH Unit
Flat cable
Step Action
1 Check cables for connection and
correct as necessary.
2 Replace PH Unit.
3 Replace PWB-P.

(12) C1468: EEPROM error

<Detection Timing>
• An EEPROM not written with initial data was detected.
<Troubleshooting Procedures>
Controller/Mechanical Control Board (PWB-P)
Step Action
1 Unplug, then plug in the power cord, and
turn off this machine, then turn it on
again.
2 Check the connection of the EEPROM
on the PWB-P, and then correct it if nec-
essary.
3 Replace PWB-P.
4 Replace EEPROM.
Description
Relevant Electric Parts
Controller/Mechanical Control Board (PWB-P)
Ref. Page
Control Signal
–
☞ D-19
☞ D-12
Description
Relevant Electric Parts
Ref. Page
Control Signal
–
–
☞ D-12
☞ D-50
T-23
WIRING DIAGRAM
Location
(Electric Parts)
– –
– –
– –
WIRING DIAGRAM
Location
(Electric Parts)
– –
– –
– –
– –