Trouble On Paper Feeding - Epson SC-T7000 series Service Manual

SC-T7000 series/SC-T5000 series/SC-T3000 series

2.5 Trouble on Paper Feeding

This section describes the possible troubles on paper feeding and their causes and remedies.
Symptom
Paper is not fed into the printer properly.
Paper feeding or paper ejecting is
abnormal.
Paper is skewing.
Actual margins differ from the specified
margins.
TROUBLE SHOOTING
Table 2-4. Trouble on Paper Feeding
Cause
Improper PE SENSOR adjustment
PE SENSOR failure
PF SCALE or PF ENCODER failure
The tension of the PF TIMING BELT is
not proper.
Suction setting failure
SUCTION FAN failure
PF rollers failure
The Paper Skew Check function has
been disabled.
The Paper Size Check function has
been disabled.
The PW SENSOR is not working.
Roll paper edge is attached to the take-
up reel at an angle.
The paper hold-down plate is pressing
paper too strong.
Paper feed amount is not configured
correctly.
The Paper Size Check function has
been disabled.
Trouble on Paper Feeding
Check Item
---
Does the PE SENSOR work normally? Check it using the
Service Program.
1. Is the PF SCALE damaged or contaminated?
2. Is the PF SCALE attached properly?
3. Is the PF ENCODER installed correctly?
---
1. Is the suction setting proper?
2. Does the SUCTION FAN work normally? Check it
using the Service Program.
Are the PF rollers contaminated or damaged?
---
---
Does the PW SENSOR work normally? Check it using the
Service Program.
---
---
---
---
Revision B
Remedy
Perform the Rear AD Adjustment. (Page 269)
Replace the PE SENSOR. (See P.177)
1. Clean the PF SCALE.
2. Reinstall the PF SCALE and PF ENCODER.
3. Replace the PF SCALE (See P.165) and PF
ENCODER (See P.166).
Correct the tension of the PF TIMING BELT.
(Page 262)
1. Make the suction setting properly.
2. Replace the SUCTION FAN.
Clean the rollers or replace them.
Enable (select "ON") the Paper Skew Check
function.
Enable (select "ON") the Paper Size Check
function.
Replace the PW SENSOR. (See P.161)
Attach the paper to the take-up reel correctly.
Align the holes on the plate with the edges of
paper.
Perform the Media Feed Auto Adjustment.
265)
Enable (select "ON") the Paper Size Check
function. (The printer is not capable of precisely
correcting less than 2 mm differences.)
Confidential
(Page
62