
EPSON Stylus Photo 1390/1400/1410
Revision B
OPERATING PRINCIPLES
Printer Mechanism
25
Detection of CD/DVD Tray Control
(The Stylus Photo 1390 is not equipped with CD/DVD related units.)
Before starting to print, determines the type of media.
PW sensor dark voltage (VH) measurement
PW sensor dark voltage (VH) measurement is performed at the following timings
and locations and used to calculate the threshold value of whether paper is present
or not.
CD/DVD Tray
(The Stylus Photo 1390 is not equipped with CD/DVD related units.)
When printing on a CD-R, the dark voltage is measured on the CD/DVD tray,
and the threshold value (VS) is then calculated and saved in the EEPROM
area as a PW detection level.
•
Threshold value detection voltage: CD-R present
(tray home position detected)
The measurement voltage in the presence of the CD-R is saved into the
EEPROM as a white level. The white level value is used to check the sensor
deterioration condition on occasions such as servicing.
• If the measurement value of the white level is close to that of the PW
detection level, it means that the sensor is dirty or deteriorated.
2.2.1.4 APG (Auto Platen Gap) Adjustment Mechanism
The following indicates the specification of the DC motor that drives the APG adjuster.
The APG Motor (DC Motor) and two APG Sensors drive the PG Cam to automatically
adjust the PG amount according to the paper.
Figure 2-2. APG Mechanism
Table 2-3. APG Motor Specifications
Item
Specifications
Type
DC motor with brushes
Drive voltage
+42V ± 5% (voltage applied to driver)
Armature resistance
64.7
Ω
± 15%
Inductance
37.6mH ± 25%
Rotor Inertia
3.94gcm
2
Drive method
PWM, constant-current chopping
Drive IC
A6628
Carriage Shaft
Carriage Unit
APG Motor
PG Cam
APG Sensor
APG
Sensor
Содержание 1400 - Stylus Photo Color Inkjet Printer
Страница 1: ...EPSONStylusPhoto1390 1400 1410 Color Inkjet Printer SEIJ06009 SERVICE MANUAL ...
Страница 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Страница 21: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Страница 39: ...C H A P T E R 3 TROUBLESHOOTING ...
Страница 71: ...C H A P T E R 4 DISASSEMBLYANDASSEMBLY ...
Страница 131: ...C H A P T E R 5 ADJUSTMENT ...
Страница 148: ...C H A P T E R 6 MAINTENANCE ...
Страница 157: ...C H A P T E R 7 APPENDIX ...
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Страница 165: ...Model PM G4500 Stylus Photo 1390 1400 1410 Board C589 PSB Rev D Sheet 1 1 ...
Страница 166: ...Model PM G4500 Stylus Photo 1390 1400 1410 Board C589 PSE Rev B Sheet 1 1 ...
Страница 167: ...Model PM G4500 Stylus Photo 1390 1400 1410 Board C589 Panel Rev B Sheet 1 1 ...
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