Pick-Up And Feed - Ricoh FAX550 Service Manual

November 30th, 1991

2. Pick-up and Feed

Mechanism
Reference:
Group 3
Facsimile
Manual,
section 2-2
Tx Motor
•
This machine uses an electrical clutch mechanism with trailing edge sen-
sor.
•
There is no manual feed.
Resolution
Standard - The tx motor feeds the document at 7.7 lines/mm. The video
processor executes OR processing to convert the data into 3.85 lines/mm.
Detail - The tx motor feeds the document at 7.7 lines/mm. There is no OR
processing, and the data is transmitted at 7.7 lines/mm
Fine - The tx motor feeds the document and transmits data at 15.4 lines/mm.
If the other terminal cannot receive at this resolution, the tx motor feeds the
paper at 7.7 lines/mm, and the data is transmitted using Detail resolution.
Jam Conditions
The cpu detects a document jam if one of the following conditions occurs.
•
The scan line sensor does not switch on within 3.5 s of the Start key be-
ing pressed.
•
The scan line sensor does not turn off after the maximum document
length has been fed since it turned on.
•
The scan line sensor switches on while the document sensor is off.
DETAILED SECTION DESCRIPTIONS
2-2
SCANNER
ADF Clutch