Epson SC-F9200 Series Service Manual page 273

SC-F9200 Series
Class Adjustment Items
Check the CR Scale for any abnormality such as
CR Scale Check damage or dirt and check if the scale can be
properly read by the encoder.
Calibrate the active damper.
* Active damper is a function to reduce the
CR Active Damper
carriage vibration which causes vertical bands on
Adjustment (Automatic)
prints by outputting waveforms which have
phases opposite to the motor vibration.
The CR Motor is designed to stop when the
amount of heat generation (motor temperature)
during motor operation reaches a predetermined
limit. The amount of heat generation is estimated
CR Motor Measurement based on the electrical characteristics of the
CR related
& Automatic Adjustment motor, which vary by motor and power supply of
the printer. Therefore, to get the motor control to
work properly, the electrical characteristics
values of the motor need to be measured and
stored in the memory on the Main Board.
Adjust the platen gap of the CR Unit using the
PG adjustment
thickness gauge.
ADJUSTMENT
Table 4-2. Adjustment Items
Overview Symptoms that the Adjustment is Needed
When the CR Scale is not read properly, the
carriage will not operate normally.
Because the motor vibration/carriage vibration
cannot be reduced, vertical bands may appear on
prints.
If this adjustment is not made, the estimation of
the motor temperature cannot be made properly
and may cause the following symptoms.

Even though there is no problem with the
motor temperature, the printer pauses during
printing because it judges that the motor is in
high-temperature state.

Despite the motor is in a high-temperature
state, a lower motor temperature is estimated
and the printer does not stop. This may cause
the printer to malfunction.
When the PG is out of standards, the following
symptoms may occur.

Gap is too wide:
Unstable ink droplet paths or misaligned dots
occur, and it causes low printing quality such
as banding, printing misalignment, or grainy
image.

Gap is too narrow:
The head rubs paper.
Overview
Service
Printer Mode Jig Media
Program
Normal
√
mode
Normal
√
mode
Normal
√
mode
Normal Thickness
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mode gauge
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