Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Mechanical Adjustment 381†
Adjustment Procedure
Adjusts position of Paper Thickness Sensor Holder for   when [Paper 
Lever] is lowered with adjustment tool 0.3/0.4 or Paper Lever is lowered 
with no adjustment tool and   when Paper Lever is lowered with 
adjustment jig 0.8/0.9 or Paper Lever is raised with no adjustment tool. 
1. Loosen the screw fixing Paper Thickness Sensor Holder.
2. Slide the Paper Thickness Sensor Holder up/down while checking 
the panel display. Keep the Paper Thickness Sensor Holder at the 
place just after the panel display changes.
3. Tighten the screws to fix the Paper Thickness Sensor Holder.Figure 5-9. Paper Thickness Sensor Adjustment	


Adjust by raising the Paper Thickness Sensor Holder when 
the numerical value increases and lowering the holder when 
the value decreases.
Screws
Paper Thickness Sensor Holder
2
1 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Mechanical Adjustment 3825.2.4  CR Encoder Sensor Position AdjustmentThis is intended to keep the CR Encoder Sensor and CR Scale at a suitable 
space.†
Procedure
1. Move the Carriage Unit and check the position of the Scale, CR 
against the sensor at 3 places (left end, center, right end). Visually 
confirm uniform distance of the arrows shown in the figure.
2. When space is NG, loosen the screw of Holder, Linear Scale or 
Holder, Sensor, HP and move the Lever, Scale, CR. Then adjust 
the position of Scale, CR and tighten the screw.
3. After adjusting, check the 3 places again (left end, center, right end).
Figure 5-10. CR Encoder Sensor Position Adjustment_1
Figure 5-11. CR Encoder Sensor Position Adjustment_2
Lever, Scale, CR
Holder, Sensor, HP
Make even 
space
Holder, Linear Scale
Lever, Scale, CR 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Mechanical Adjustment 3835.2.5  PG Adjustment†
Required Tools„
Thickness Gauge T=0.75
„
Thickness Gauge T=0.65
†
Procedure
1. Open the top cover and put suitable objects into the top cover sensor 
area to keep the sensor turned on. Make sure that the panel display is 
changed from TOP COVER OPEN to  READY. 
2. Enter Maintenance Mode 2.
Power off → Press Paper Source()
4. Select SELF TESTING: Adjustment.
Paper Feed(∇) x1 → Menu(>)
5. Select Adj: PG Adj..
Paper Feed(∇) x1 → Menu(>)
6. Loosen the two screws that secure Bushing, Shaft, Rear.
7.Press Menu(>) to change the panel display.
[Enter] Start
8. Press Menu(>) again to move the PG to initial position and change 
the panel display.
PG Offset *xx00
9. Attach the Thickness Gauge (T=0.65) onto the right most Paper 
Guide Assy., Paper Eject, Front, Right.  Figure 5-12. Screws Securing Bush, Shaft, Rear
Figure 5-13. PG Adjustment

Be careful not to break the sensor flag when turning the 
sensor on.
Bushing, Shaft, Rear
Screws
Paper Guide Assy
Gauge 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Mechanical Adjustment 38410. Move the Carriage Unit and make sure it hits the thickness gauge.
11. Press the Paper Feed (Δ) to move the Carriage Unit upward and 
widen the PG. Slowly move the Carriage Unit upward to the position 
where the Carriage Unit does not hit the thickness gauge.
12. Replace the Thickness Gauge (T=0.65) by the Thickness Gauge 
(T=0.75).
13. Move the Carriage Unit and make sure it hits the thickness gauge.
14. Add 3 to the current number displayed on the panel.
Paper Feed (Δ) x3
15. Press Menu (>).
16. Rotate the Bushing, Shaft, Rear so that the Lever, Rock, PG gets 
into the extreme right notch of the Bushing, Shaft, Rear, and tighten 
the Bushing, Shaft, Rear with the two screws which have been 
loosened in Procedure 6.
17. Turn the printer off.
Always move the Carriage Unit by pulling the Belt, CR in 
the following steps. Holding and moving the Carriage Unit 
may cause deformation of the PG due to the downward 
pressure. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Mechanical Adjustment 3855.2.6  Multi Sensor Position AdjustmentThis adjustment sets a suitable distance between the Multi Sensor (Multi 
Sensor Holder) and the platen.†
Required Tools„
Multi Sensor Position Tool
„
CR Lock Tool
†
Procedure
1. Turn the Bushing, Shaft, Rear so that [Lever, Lock, PG] goes into the 
furthest right notch of Bushing, Shaft, Rear.
2. Place position tool 3.0 on Paper Guide Assy., Paper Eject, Front, 
Right at the position shown by Figure 5-15.
3. Move the Carriage Unit to the position where the Multi Sensor Holder 
touches the position tool.
Figure 5-14. Multi Sensor Position Adjustment_1
Figure 5-15. Setting the Position Tool

When moving the Carriage Unit, do not let the Print Head 
contact the thickness gauge.
Carriage Unit
Printhead Thickness gauge
Bushing, Shaft, Rear
Lever, Lock, PG
Thickness gauge
Paper Guide Assy., Paper Eject, Front, Right 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Mechanical Adjustment 3864. Set the CR Lock Tool.
Set the CR Lock Tool into the 2 holes on the printer frame, and then fix 
the tool by pinching with the bearings of the Carriage Unit.
5. Loosen the two screws securing the Multi Sensor Holder.
6. Set the position of the Multi Sensor Holder in   rear direction and 
then   downward direction. Then tighten the two screws.
7. Set the position tool 2.9 and move the Carriage Unit, confirming that 
the Multi Sensor Holder does not contact it.
8. Set the position tool 3.1 and move the Carriage Unit, confirming that 
the Multi Sensor Holder contacts it.
Figure 5-16. Setting the CR Lock Tool_1Figure 5-17. Setting the CR Lock Tool_2
Figure 5-18. Multi Sensor Position Adjustment_2
Carriage Unit fixing tool
CR Lock Tool
Screws
Multi Sensor Holder 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Basic Adjustment 3875.3  Basic Adjustment5.3.1  RTC&USB ID&IEEE1394 IDWrites the RTC Backup Battery Reset Time, USB ID, and IEEE 1394 ID on a 
new Main Board.†
Procedure
1. Note down the 10-digit ID number (IEEE1394 ID) on the ID label that is 
stuck to lower backside of the main unit right frame when replacing the 
Main Board.
2. Turn the printer power on after replacing the Main Board.
3. Start up the adjustment program and select [RTC&USB ID IEEE 1394 
ID].
4. Confirm or Input [Date] and [Time].
5. Enter the 17-digit serial number of the main unit. The USB ID will be 
generated.
6. Enter the ID number that is taken down in Procedure 1 to the [IEEE 
1394 ID]. 
7. Click [Write] to start writing the RTC, USB ID, and IEEE1394 ID to the 
NVRAM on the Main Board.
8. Click [Next].
9. Click [Check] to display the information written to the Main Board, 
confirm the contents, and click [OK].
10. Click [Finish].Figure 5-19. IEEE 1394 ID Label
Figure 5-20. RTC&USB ID&IEEE 1394 ID	


Writing IEEE1394 ID is Stylus Pro 4400/4800 only.

If you turn the printer OFF/ON after the USB ID has been 
changed, Windows recognizes the USB as another port and 
creates a driver of xxxx (Copy x). If you need to continue 
adjustment using this program, finish the program once and 
restart it by selecting the new driver (Copy x).IEEE 1394 ID Label 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Basic Adjustment 3885.3.2  Head Rank IDSets/Inputs the information unique to each print head as the Head Rank ID for 
the best driving voltage setup after replacing the print head. (It can be read 
from and written to a file.)†
Procedure for Writing

1. Turn the printer power on.
2. Start up the adjusting program and select [Head Rank ID].
3. Note down the Head Rank ID on the ID label attached to the print head 
to be installed.
4. Enter the Head Rank ID to the edit box on the screen in the similar 
manner (21 digits in total) as the one printed on an ID label.
5. Click the [Write] button.
6. Click [Finish].
†
Procedure for Writing

1. Turn the printer power on.
2. Start up the adjusting program and select [Head Rank ID]. 
3. Click the [File Open] button and select the Head Rank ID information 
file (txt).
4. Click the [Write] button.
5. Click [Finish].
†
Procedure for saving the Head Rank ID information
1. Turn the printer power on.
2. Start up the adjusting program and select [Head Rank ID].
3. Note down the Head Rank ID on the ID label attached to the print head 
to be installed.
4. Enter the Head Rank ID to the edit box on the screen in the similar 
manner (21 digits in total) as the one printed on an ID label.
5. Click [File Save], name the file with a suitable one, and save the 
information as a text file.
6. Click [Finish].Figure 5-21. Head Rank ID
Enter
ID Label 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Basic Adjustment 3895.3.3  Multi Sensor Level AdjustmentPaper is fed into the printer, the Multi Sensor emits light onto the paper and 
platen, the reflected light is received by the Multi Sensor, and detection level is 
corrected automatically. Then the detection result is printed.†
Paper Used„
Size: 17
„
Type:  Enhanced Matte Roll Paper
†
Procedure
1. Start the adjustment program and select [Multi Sensor Level 
Adjustment].
2. Click the [Run] button to print the adjustment values.
3. Each numerical value is described below. Confirm standard values for 
B~E.
„A: Shows results of light received from either PW1 or PW2 light 
receiver when PG=1.2.„B: Automatically switches to 1 or 0 according to amount of 
reflected light acquired. LED light quantity control is switched 
according to the numerical value.„C: Shows the LED light emission level. The standard value differs 
according to the light quantity control set at B.
zAt I/O: 1 = 80 or higherzAt I/O: 0 = 104 or lower
„D: Shows level of reflected light received from the paper. Value is 
within range of 230~236.„E: Shows level of reflected light received from the platen. Value is 
within range of 0~3.
4. Click the [Finish] button.Figure 5-22. Multi Sensor Level Adjustment
Figure 5-23. Multi Sensor Level Adjustment Values
[PW1 (PG=1.2)]  I/O: 1,
[PW2 (PG=1.2)]  I/O: 1,D/A: 119, A/D: 233, A/D (2): 1,
A/D: 233,
D/A:   93,ABCDE 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CAdjustment Basic Adjustment 3905.3.4  T&B&S (Roll Paper)This adjusts the printing position that includes the cut position on the surface of 
the paper and corrects a bend of emission axis of the main scanning direction 
in the multi sensor.†
Paper Used„
Size: 17
„
Type:  Enhanced Matte Roll Paper
†
Specifications„
Top margin: 10 ± 1 mm
„
Bottom margin: 114 ± 1 mm
„
Side margin: 10 ± 0.3 mm
†
Procedure
1. Start adjustment program and select [T&B&S (Roll Paper)].
2. Click the [Print] button to print the adjustment pattern.
3. Refer to Figure 5-25, and measure the distance of the following three 
positions;
†
Top margin, bottom margin
Check the arrow direction of T&B Position printed on the pattern. 
Then measure the distances of margins indicated with arrows in 
Figure 5-25 for top and bottom.
†
Side margin
Measure the distance as shown in Figure 5-25.
4. Input each of the following value into its corresponding edit boxes.
†
The values measured in Procedure 3„
Top margin
„
Bottom margin
„
Side margin
†
The values printed in the pattern lower part„
Multi sensor left
„
Multi sensor right
5. Click the [Write] button and then click the [Print] button again to print 
the adjustment pattern.
6. Repeat Procedure 3 and Procedure 4, and click [Write].
7. If the specification values are satisfied, click [Finish]. If not satisfied, 
repeat Procedure 3 through Procedure 5 until they meet the standards.
 .
Figure 5-24. T&B&S (Roll Paper)
Figure 5-25. Adjustment Pattern

„
When measuring colors, place the adjustment pattern on 
a flat surface.
„
Make sure to perform the adjustment twice regardless 
whether the value obtained from the first measurement 
meets the specified value.T&B Position : ) Top Margin
() Bottom Margin
(