Canon FY8-13EX-000, NP6218 service manual Relationship between the Scanner Sensor and Signals

CHAPTER 3 EXPOSURE SYSTEM

2. Relationship between the Scanner Sensor and Signals

Scanner sensor	Signal		Scanner		Description
		Forward		Reverse
PS1 (scanner	SCHP				Registration clutch turns on.
home position
sensor)
					After 0.1 sec, the scanner stops moving
					in reverse.

Table 3-301

Reference:

The registration clutch is turned on in response to a press on the Copy Start key or when the scanner starts to move forward.

3. Basic Sequence of Operations (scanner)

Power switch	Copy Start key
ON	ON

Scanner home position sensor (PS1)

Registration sensor (PS6)

Scanner

Scanning lamp

STBY	INTR		SCFW	SCRV	SCFW	SCRV	LSTR
∗		AER
			Forward Reverse
Half pre-heating	Full pre-	ON Prehe-ating				Half pre-
	heating					heating

∗Unless it is at the home position already, the scanner returns to the home position at power-on.

Figure 3-302

3-6 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)