Ricoh FAX2000L - Page 31

30 November, 1999 PRINTING
2-7
Detailed
Descriptions
Block Diagram
The LIF (Laser Interface) circuit inside the FCIP2 monitors and controls the laser
diode timing (FCU CN9-3), and transfers data for printing to the laser diode (FCU
CN9-6).
Cross Reference
Group 3 Facsimile Manual: page 4-3-13
Error Conditions
LD Failure:
The machine detects LD failure when it does not detect the laser synchronization
signal within 10 ms of the LD ready signal. When this occurs, the machine warns
the customer with the Call Service indicator (error code 9-20).
Mirror Motor Failure:
The machine detects a mirror motor error when the FCU CN10-4 signal does not
go low within 10 seconds of the hexagonal mirror motor turning on.
The machine also detects a mirror motor error when the FCU CN10-4 signal goes
back to high for 3 seconds or more during mirror motor operation. When either of
these errors occurs, the machine warns the customer with the Call Service
indicator (error code 9-23).
FCU
FCIP2
LDDR
Laser
Synch
Detector
Circuit
10-4
10-3
EXIO
LD Enable
DATA
Control
Mirror Motor Lock
Laser
Diode
Laser
Diode
Controller
Polygon
Mirror
Drive Unit
Mirror Motor Enable
9-2
9-6
9-3
LIF
Laser Synch
Detector
26-4
H545D506.WMF