Epson SC-T7000 series Service Manual page 217

SC-T7000 series/SC-T5000 series/SC-T3000 series
Class Adjustment Items
PW + T&B&S check
Refer to CR related.
and adjustment
The cutter 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
CUT Motor based on the electrical characteristics of the
Measurement 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.
Media Feed
Adjust the installation position of the sensor so
related
that the Paper thickness sensor detects the paper
Paper thickness sensor
thickness correctly. Adjust the paper thickness
adjustment
sensor using the jig for paper thickness
adjustment.
Adjust the detection sensitivity of the PE
SENSOR so that it can recognize the paper
inserted in the printer correctly. Let the sensor
detect the Standard Sheet (translucent media)
Rear AD Adjustment which is hard to recognize to check the result on
the Control Panel. (By using the media which is
hard to recognize, paper can be recognized
regardless of the environmental condition or the
media)
ADJUSTMENT
Table 4-2. Adjustment Items
Overview Symptoms that the Adjustment is Needed
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.
If this adjustment is not made, the thickness of the
paper cannot be detected correctly. As the result,
the PG is not set correctly against the paper
thickness which is actually inserted.
When the PG becomes wider: Low print
quality such as unstable ink droplet paths or
misaligned dots
When the PG becomes narrower: Head rubbing
If the adjustment is not executed, paper
recognition failures may occur (e.g. paper empty
error occurs even with paper inserted, some media
are not recognized).
Overview
Service
Printer Mode Jig Media
Program
Normal
√
mode
Adjustment
jig for
Serviceman
---
paper
Mode
thickness
sensor
Serviceman Standard
---
Mode Sheet
Revision B
Page
p. 279
p. 267
p. 269
217
Confidential