Basic Sequence - Canon imagePRESS C1 P Service Manual

Chapter 5
Jack No
J203
J204
J205
J206
J207
J208
J209
J210
IC
IC1
IC2
IC3
IC4

5.2 Basic Sequence

5.2.1 Basic Sequence of Operation at Power-On
imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
5.2.2 Basic Sequence of Operation in Response to a Press on the Start Key
imagePRESS C1 / Color Image Reader-H1 / imagePRESS C1+ (Printer) / imagePRESS C1+
1. Basic Sequence of Operation in Response to a Press on the Start Key (book mode; 1 original)
5-4
used for communications with the printer unit (connection with the scanner motor).
used for communications with the ADF (image signal input).
used for connection with the CCD unit.
used for communication with the CCD unit.
used for connection with the inverter PCB.
used for connection with the original size sensor (AB-configuration).
used for connection with the original size sensor (inch-configuration).
not used
not used.
CPU (stores boot program)
ASCI (built-in RAM)
flash RAM (stores firmware)
EEPROM (backs up service mode settings)
STBY
Forward Reverse
Reader motor
Original scanning lamp
HP sensor
ON
Scanner unit position
HP (shading position)
1. HP positioning
2. CCD-LIVE control
gain correction *2
3. move to shift shading
start position
4. shift shading
5. fixed shading
- white plate dust detection
shading correction
*1: shifts only if the copyboard (ADF) is open.
*2: controls by turning on/off the power of the CCD and the circuitry around it for power saving and
for protection against overheating.
Description
T-5-4
Description
SREADY STBY
Forward
Reverse
ON
HP (shading position)
Gain correction
Offset correction
F-5-6
Shading
Image leading edge
position
*1
*1
F-5-7
{ shift shading
fixed shading
white plate dust detection control
shading correction
Original size detection
position
0012-9670
0012-9671