Epson Stylus Pro 4910 Service Manual page 53

Epson Stylus Pro 4900/Epson Stylus Pro 4910
Code Error Name
1. The PF Motor or the PF Encoder is not connected correctly.
2. Detects that it is being driven at an irregularly slower speed
than the specified value.
PF Motor
122F
lock error
Head driver
The temperature of the Head driver rises, and reaches the
131B (transmission gate)
specified level.
overheat error
IS Motor The number of pump operation counter of the IS Unit reached
1412
life error the specified upper limit.
The electric current flowing when driving the motor is
irregularly large.
IS Motor IS Motor Assy cable is damaged.
141A
overload error Irregular load
IS Motor Assy encoder failure
IS Motor failure
Detects that it is being driven at an irregularly faster speed
than the specified value just before stopping.
Irregular load
IS Motor
141B
over speed error
IS Motor Assy encoder failure
SUB Board is damaged.
IS Motor driver failure
Detects accumulatively more than the specified number of
times that it is being driven in the opposite direction to the
IS Motor
specified driving direction.
141C
reversing error
The polarity of IS Motor Assy cable is opposite.
IS Motor Assy encoder failure
Detects that the driving period is irregularly long.
IS Motor
141D Irregular load
driving time-out error
Firmware becomes out of control.
TROUBLE SHOOTING
Cause
Irregular load
PF Encoder failure
PF Motor failure
Remedies for Service Call Error
Check Item
1. Check the following connection for disconnection and
damage.
PF Encoder to SUB-C Board (CN303)
PF Motor to SUB-C Board (CN302)
2. Carry out "Encoder Check" to check if the PF Encoder
functions normally. (See P.399)
3. Carry out "Motor Measurement Adjustment (PF Motor)" to
check if the PF Motor functions normally.
1. Turn the power off and then on again to check if the printer
recovers from the error.
2. Check the connection of the Head FFC.
Any slant connection or a similar abnormality?
---
1. Check the following connection for disconnection and
damage.
IS Motor Assy to SUB-B Board (CN228, CN229)
2. Carry out "Encoder Check" to check if the IS Motor Assy
encoder functions normally. (See P.399)
3. Carry out "Motor Measurement Adjustment (IS Motor
Assy)" to check if the IS Motor functions normally.
P.393)
Carry out "Encoder Check" to check if the IS Motor Assy
encoder functions normally. (See P.399)
1. Check the following connection and installation direction.
IS Motor Assy to SUB-B Board (CN228, CN229)
2. Carry out "Encoder Check" to check if the IS Motor Assy
encoder functions normally. (See P.399)
---
Revision A
Remedy
1. Replace the PF Encoder.
P.183)
2. Replace the PF Motor.
P.182)
(See P.393)
1. Replace the Head FFC.
P.249)
2. Replace the Printhead.
P.232)
Replace the IS Unit. (See P.233)
Replace the IS Unit. (See P.233)
(See
1. Replace the IS Unit.
P.233)
2. Replace the SUB-B Board.
P.162)
3. Replace the Main Board.
P.152)
Replace the IS Unit. (See P.233)
Replace the Main Board.
P.152)
Confidential
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54