Pg Setting - Epson Stylus Photo R1900 Service Manual

EPSON Stylus Photo R1900/R2880/R2000

2.4 PG Setting

As this printer uses an Auto PG (APG), an appropriate PG position is set according to the used paper type.
The following table indicates the PG positions, the main applications of each position, and the relationships between the two sensors used with the APG.
Application
PG (– –)
Printing • Photo paper
(A4,Letter)
Non-printing
–
PG value 1.05mm
Sensor PG (– –)
APG Sensor 1* Low
APG Sensor 2 Low
Note "*": The signal output is "High" while the PG positions are changed.
Operating Principles
PG (–) PG (Typ)
• Roll paper • Plain paper
• Photo Matte paper • Exclusive paper
• PG (-) rub avoidance
• Standby position after
power-on (When the
CDR Tray Base is
closed.)
–
• At power-off
• Ink Mark Sensor reading.
(Auto Bi-D)
1.20mm 1.70mm
PG (–) PG (Typ)
Low
Low
Table 2-4.
PG Position
PG (+)
• Envelope
• PG (Typ) rub avoidance
• Ink Mark Sensor reading.
(Detection of dot
missing)
2.10mm
PG (+)
Low Low
Low Low
PG Setting
PG (++) Release
• CD/DVD
• Initialization at power-on • Standby state for CD/
DVD feeding
• Cleaning (wiping)
• Paper jam removal
• Ink Cartridge
replacement
4.50mm
PG (++) Release
Low
High
Revision E
–
–
Low
High
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