Filter
Top Products
Operation of Control Parts
CL-S6621 2-30
R90
C103
R89
R91
[SA, Main PCB]
3
2
J12
1
2
U21A
Paper Near End Sensor
(SA PNE Sensor)
Q13
DTC115EM
PWRSAVE
U1A
CPU
D18
114
L: Power Saving mode
H: Normal mode
+3.3V
Q12
DTA114EM
(White)
1
PNESNS
PCT7
77
3
2
1
PT301
PS301
(7) Paper Near End sensor
The paper near end sensor (“SA PNE Sensor”) is used to detect a paper near end status of roll
paper installed in the printer.
By default, issuing a paper near end alarm is disabled. To enable it, you need to change the
Paper Near End Alarm submenu under the “PageSetup” main menu from Off to On.
Before a paper near end status occurs, the “Lever PNE” is pushed by the roll paper edge and
the “Slider PNE” of the paper shaft is engaged with the “SA PNE Sensor”. Then, pin 77
(PNESNS) of U1A (CPU) goes "High" level, and the non paper near end status is detected by
the CPU.
When the roll paper diameter reaches the paper near end point being mechanically set, the
“Lever PNE” that was pushed by the roll paper edge pops up and the “Slider PNE” of the paper
shaft comes off the “SA PNE Sensor”. Then, pin 77 (PNESNS) of U1A (CPU) goes "Low" level,
and the paper near end status is detected by the CPU. (Q12 turns ON in normal mode (i.e., in
other than power saving mode).)
Lever PNE
Spring PNE
SA PNE Sensor
Slider PNE
Roll Paper
Roll Paper Holder
[Normal Status]
Lever PNE
Spring PNE
SA PNE Sensor
Slider PNE
Roll Paper
[PNE (Paper Near End) Status]