Star Micronics WinType 4000, Technical Manual

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MAINTENANCE GUIDE
3.2 ROS Controller
3.2.1 Scanner Motor Operation
The ON/OFF control of the scanner motor in each operating mode is shown below.
Operating Mode ON/OFF Status of the Scanner Motor
On-line Mode MCU PWB
User Settings Mode Normally turned OFF.
Test Print Mode When the power is turned ON, the scanner motor begins running
at the same time and remains ON.
Diagnosis Mode Normally turned OFF.
Non-volatile Settings Mode ModeWhen the power is turned ON, it begins running at the same
time and remains ON.
The speed of the scanner motor displayed below is equal to the resolution which differs from that in the printer’s
specifications.
Resolution Speed
300 dpi 4075 rpm
dpi (dots per inch)
rpm (revolutions per minute)
3.2.2 ROS Warm Up
The scanner motor is rotating as the ROS begins warming up. When the break in the SOS signal is shorter than the
standard READY value three times in succession, the ROS will terminate its warm up operation. (The scanner
motor continues rotating at a constant speed.)
3.2.3 Standard ROS Values
Standard ROS Values Details
Standard READY Value A break in the SOS signal equal to more than 98% of the specified speed
of the scanner motor
Standard FAIL Value A break in the SOS signal equal to less than 90% of the specified speed
of the scanner motor
Note: Runaway of the scanner motor, in response to an increase in speed of over 1%, prevents the laser beam
from entering the SOS sensor. When the standard FAIL value is not attained, a U2 error message is
displayed.