Power-On Sequence - Epson Artisan 810 Service Manual

Epson Artisan 810/835/837/710/725/730/Epson Stylus Photo PX810FW/TX810FW/PX820FWD/TX820FWD/PX830FWD/PX710W/TX710W/PX720WD/TX720WD/PX730WD/TX730WD

2.2 Power-On Sequence

Initializing operations of this printer at power-on differ between when powered off
normally (Simple Reset Sequence (p54)) and when powered off abnormally
Sequence (p56)). This section describes how this printer operates in the Simple Reset
Sequence and in the All Reset Sequence under certain conditions.
From the next page on, simplified diagrams of the printer describe
C H E C K
operations in each sequence. The following shows how to use the
P O I N T
diagrams.
Printer Operation Status
Rotation Direction of PF Motor
Clockwise: forward feeding
Counterclockwise: backward feeding
This shows clockwise rotation.
Shows carriage movement.
80
EJ Frame Assy
PF Roller
EJ Release Trigger
Position change of
EJ Frame Assy
This shows EJ Frame Assy
is rising.
Figure 2-6. Printer Operation Status
OPERATING PRINCIPLES
(All Reset
PG position change by APG Mechanism
This shows the change from "PG++" to
"PG-".
Digit number of CR
PG Position
This shows "PG-".
HP 0
Carriage
PG++
PG-
CR Lock
Red: Set
White: Released
Switch Lever
Transmission
Arm
Power-On Sequence
PF Drive Shift Status
C H E C K
In this printer, the PF Motor drives five different mechanisms. The
P O I N T
mechanism driven by the PF motor is switched by changing the position
of the Transmission Arm
force while the carriage presses the Switch Lever to the 0-digit side
(Switching Position). The following shows how to use the simplified
diagram which indicates the relationship between the position of the
Transmission Arm and the mechanism driven by the PF motor.
CDR Tray Drive Position
(1)
ASF Drive Position (2)
APG Drive Position (4)
Photo Tray Drive Position
(5)
Ink System Drive Position
(6)
Intermediate Position
PF Drive transmission
path is changing.
(Switching Position)
Figure 2-7. PF Drive Shift Status
Note : In power-on sequences, there is no operation using positions (2) and (5).
This printer does not use position (3).
Revision G
(See Figure 2-6.) using the PF Motor's drive
1
Shows the PF Motor's drive force is
transmitted to the CDR Tray movement
mechanism.
Shows the PF Motor's drive force is
2
transmitted to the paper loading
mechanism.
Shows the PF Motor's drive force is
transmitted to the APG mechanism.
4
Shows the PF Motor's drive force is
transmitted to the cassette's photo tray
movement mechanism.
5
Shows the PF Motor's drive force is
transmitted to the Ink System.
6
The Switch Lever is in the Intermediate
Position, where the transmitted PF
Motor's drive force is cut off from each
mechanism except for the paper feeding
mechanism.
Shows the Switch Lever is in the
Switching Position and the
Transmission Arm is shifting; in this
case, from position (6) to (1) by the PF
Motor's drive force.
Confidential
53