Epson SQ-B50/2550 Technical Manual page 241

REV.-A
25: Change FR./TR.
When this mode is selected, the release/friction function is driven.
Before entering this mode, please check modes' 16':23' and '24'.
Press the ON-LINE switch to exit this mode, or when an error occurs.
An error is indicated when the paper feed motor is stepped, but the state of the release sensor does
not change.
26:
TE motor drive
Select this modes to drive the TE motor.
The TE motor is driven CW for 160 steps and CCW for 160 steps.
To exit this mode, press the ON-LINE switch.
27: TE phase HI/LO
When this mode is selected, IC2A (GA) outputs the phase signals A to D for the TE motor at a constant
rate under the holding voltage (+5V).
Using this mode, the waveforms of IC2A and
Q
11 to
Q
14 for the TE motor drive circuit can be easily
observed.
To exit this mode, press the ON-LINE switch.
28: CR motor check
Select this mode to drive the carriage motor.
In this mode, the carriage speed selection menu is displayed on the LCD as follows:
F:speed L/E:start
speed=O L/E:start
LF: Select CR speed (mode)
L/E: Drive the CR motor
Press the ON-LINE switch during while the CR motor to stop it.
Press ONLlNE switch again to exit this mode.
NOTE: This mode can not detect carriage errors.
29: Valve plug on/off
Use this mode to check the operation of the valve plunger.
When this mode is selected, the plunger is driven (turned on or off).
Check that operation is normal by listening to the sound made by the plunger.
To exit this mode, press the ON-LINE switch.
LF---+ON, FF---+END
LF: Valve plunger ON
FF: Exit this mode
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