Epson 4880 C Service Manual

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision COperating Principles Printer Mechanism Components 1512.2.8  OthersP-COVER OPEN SENSOR
This sensor is mounted at the Printer Cover right side open/close components 
to detect the open or closed condition of the Printer Cover.
Dtecting open/closed status of the cover causes the CR Motor and PF Motor 
circuits to stop/operate the motors.REAR COVER SENSOR
This sensor is mounted at the printer right rear side to detect the removed/
installed condition of the...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision COperating Principles Outline of Control Circuit Board 1522.3  Outline of Control Circuit BoardThis section describes the operation of BOARD ASSY., MAIN, which controls 
and drives the Printer Mechanism of Stylus Pro 4400/4450/4800/4880/4880C.
†C593 MAIN Board: Stylus Pro 4400/4800
†CA00 MAIN Board: Stylus Pro 4450/4880/4880C
NOTE:For circuit board details, refer to Chapter 7:Appendix (p.457) 
at the end of this volume.
†Explanation of major elements...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision COperating Principles Outline of Control Circuit Board 153
E
Figure 2-63. CA00 MAIN Board - Circuit Block Diagram
PF motor driver
ASF/pump motor
PG/PO motor
driver
Real-Time Clock
Custom ASIC Custom ASICCR motor
PF motor
ASF/pump
motor
PG/PO motor Custom
ASIC
Head FFC Lithium batteryBAT1
RTC9824SA
(IC16)E05C25BB
(IC19)A3958SLBTR-T
(IC5)
A3958SLBTR
(IC6)
A6628SEDTR-T
(IC7) (IC12)(IC15)
(IC2) (IC23)
E09A54RA
(IC17)
E09A54RA
(IC18)
CR motor driver 

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision COperating Principles Outline of Power Supply Circuit Board 1542.4  Outline of Power Supply Circuit Board100VAC from electric outlet is supplied to Power Supply Circuit Board through 
a Power Cable and AC Inlet.
The power switch constitutes a secondary power switch system. 
The secondary power switch system operates as follows: even with the power 
switch turned off, the Power Supply Circuit Board is operating by a slight power 
as long as the Power...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision COperating Principles Colorimetric Calibration (Color ID) Overview 1552.5  Colorimetric Calibration (Color ID) OverviewThis printer employs Colorimetric Calibration (Color ID) to correct unit-to-unit 
variations in color.
Colorimetric Calibration (Color ID) corrects not only the weight of ink droplets 
which differs according to the characteristic of individual printhead but variable 
factors such as drive circuit and voltage, which provides a...

CHAPTER
3
TROUBLESHOOTING 

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Outline1573.1  OutlineThis section explains procedures for rapid and efficient troubleshooting if 
trouble occurs in the printer.3.1.1  Check Before TroubleshootingFirst of all, when performing troubleshooting, the following basic parts should 
be checked.
1. Look in the printer for any foreign matter and make sure there is nothing 
there to hinder normal operation.
2. With the printer in READY condition, press the [Menu] key one time,...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 1583.2  Troubleshooting Based on Panel MessagesThis printer conducts self testing based on output conditions of each sensor. Any error detected by self testing is displayed by an LCD message and LED indicators. 
This section explains corrective actions for errors and error messages.3.2.1  Message TableMessages displayed by the printer and message priorities are shown below.
NOTE:
Warnings are shown...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 159
MISMATCH ERROR Wrong ink error
*4
Blink Blink Blinkp.168
DRIVER INK SET
SETTING IS WRONG
LOAD ROLL PAPER Wrong roll paper path ON ON –p.168
LOAD SHEET PAPER
                   IN P.TRAYWrong ASF paper path
ON ON –p.168
FEED SHEET PAPER Wrong manual paper path ON ON –p.168
FORBIDDEN MEDIA 
            FROM P.TRAYASF prohibitions
*4
ON – –p.168
FEED SHEET PAPER
                   MANUARY
TIMES...

EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 160
.
Note *1 : Blink correspond ink indicator.
*2 : Paper check LED flashes at 5-second intervals.
*3 : Occurs only when the remaining paper detection is on with roll paper or cut paper loaded.
*4 : Display by switching at 3-second intervals.
*5 : To promote that release is available by [Pause] key, display the following display by turns at 1 sec., intervals.
PRESS  PAUSE BUTTON
*6 : Received data...