Canon GP200 Service Manual page 201

Reference:
As mentioned, SLEEP 2 (power saving mode) is a state in which only the CPU of the composite
power supply PCB is supplied with power, and the machine moves from SLEEP 2 to SLEEP 1 or
standby state in response to fax reception, off-hook (including off-hook of extensions), or when the
control panel power switch is pressed.
When moving from SLEEP 2, the CPU on the DC controller PCB and the image processor PCB are
initialized, and the machine executes initial rotation (INTR1, initial rotation 1).
Since the CPU on the image processor PCB does not recognize the selection of no sound incoming
mode, the machine generates a sound once or twice.
If the user wants to suppress the sound or the initial rotation when the machine moves out of SLEEP
2, set the power saving switch to SLEEP 1 (top).
SLEEP 1 provides an anti-condensation function for areas around the scanner system, but SLEEP 2
does not have this function.
Top:
Bottom: SLEEP 2
SLEEP 1
SLEEP 2
COPYRIGHT © 1996 CANON INC.
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SLEEP 2 (power saving mode)
SLEEP 1
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATIONS AND TIMING
3–147