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Epson 680Pro Service Manual - Page 57

Table 3-16. Fatal Error indication, Table 3-17. Paper is not ejected completely without any error

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EPSON Stylus COLOR 680/777/777i Table 3-16. Fatal Error indication Step No. Detail phenomenon Check point Remedy 1. Check if the Top housing is secured with the fixing screw at the front side. Top housing 1. Secure the Housing fixing screw at the printer front side. Revision B Table 3-17. Paper is not ejected completely without any error indication Step No. Detail phenomenon Check point Remedy 1. Check if the Paper 1. Assemble the Spur gear eject roller rotate when 25.6 to the Combination the paper is ejected. gear 11.6, 36.8. Spur gear 25.6 2. Check if the Change 2. Turn back the Change lever is placed to the lever to the printer back printer front side. side with the tweezer or Change lever small screw driver. When the printer is turned on, it sounds 4 strange noise and the CR unit is stopped around the CR lock lever. 3. Check if the PF motor is operated. Check the CN7 connector and the coil resistance for PF motor. 3. Connect the PF motor cable to CN7 on the Main board. Replace the PF motor with new one. 4. If the CR lock lever is not released even if the PF motor rotate in the power on sequence, check if one of the gears has any damage in the PF motor torque transportation path. Refer to Figure 2-13. 4. Change the damaged gear with new one. 5. If the problem is not solved, replace the Main board with new one. Printing is normal. But, the paper is not ejected 1 completely and the bottom area stay 2. Check if the Paper 2. Secure the Paper eject eject frame is secured frame witt the two fixing around the Paper eject with the three fixing screws to the Main frame. screws to the Main frame. frame. Paper eject frame Troubleshooting Troubleshooting with LED Error Indications 57

Section	Page
PRODUCT DESCRIPTION	9
1.1 FEATURES	10
1.2 SPECIFICATIONS	11
1.2.1 Physical Specification	11
1.2.2 Printing Specification	11
1.2.3 Paper Feeding	12
1.2.4 Input Data Buffer	12
1.2.5 Electric Specification	12
1.2.6 Environmental Condition	13
1.2.7 Reliability	13
1.2.8 Safety Approvals	13
1.2.9 Acoustic Noise	13
1.2.10 CE Marking	13
1.3 INTERFACE	14
1.3.1 Parallel Interface (Forward Channel)	14
1.3.2 Parallel Interface (Reserve Channel)	17
1.3.3 USB Interface	18
1.3.4 Prevention of Data Transfer Time-out	19
1.3.5 Interface Selection	19
1.3.6 IEEE1284.4 Protocol	19
1.4 OPERATOR CONTROLS	20
1.4.1 Operating Switch	20
1.4.2 Control Panel	20
1.4.2.1 Switches	20
1.4.2.2 Indicators	20
1.4.3 Panel Functions	21
1.4.4 Printer Condition and Panel Status	22
1.4.5 Printer Initialization	22
1.4.6 Errors	23
1.5 PAPER	24
1.5.1 Paper Handling	24
1.5.2 Paper Specification	24
1.5.2.1 Cut Sheet	24
1.5.2.2 Transparency, Glossy Paper	24
1.5.2.3 Envelope	24
1.5.2.4 Index Card	25
1.5.3 Printing Area	26
1.5.3.1 Cut Sheet	26
1.5.3.2 Envelopes	27
1.6 INK CARTRIDGE	28
1.6.1 Black Ink Cartridge	28
1.6.2 Color Ink Cartridge	28
Operating Principles	29
2.1 Overview	30
2.1.1 Printer Mechanism	30
2.1.2 Printhead	31
2.1.2.1 Printing Process	32
2.1.2.2 Printing Method	32
2.1.3 Carriage Mechanism	33
2.1.4 Paper Feeding Mechanism	34
2.1.5 Paper Loading Mechanism (ASF Unit)	35
2.1.6 Ink System Mechanism	38
2.1.6.1 Pump Unit & Wiper mechanism	38
2.1.6.2 Capping Mechanism	39
2.2 Electrical Circuit Operating Principles	40
2.2.1 C383 PSB/PSE board	40
2.2.2 C383 MAIN Board	43
2.2.2.1 Main elements	44
2.2.2.2 Printhead Driver Circuit	45
2.2.2.3 PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit	46
2.2.2.4 CR Motor Driver Circuit	46
2.2.2.5 Reset Circuit	47
2.2.2.6 EEPROM Control Circuit	47
2.2.2.7 Sensor Circuit	48
Troubleshooting	49
3.1 Overview	50
3.2 Troubleshooting with LED Error Indications	51
Disassembly and Assembly	61
4.1 Overview	62
4.1.1 Precautions	62
4.1.2 Tools	63
4.1.3 Work Completion Check	64
4.2 Disassembly	65
4.2.1 Housing removal	66
4.2.2 Operation Panel removal	67
4.2.3 Printhead removal	68
4.2.4 CR motor removal	71
4.2.5 Waste drain ink pad unit removal	73
4.2.6 Circuit board removal	75
4.2.7 LD Roller removal	79
4.2.8 HP/PE Sensor removal	83
4.2.9 Ink system unit removal (Cap & Pump unit )	85
4.2.10 Paper Eject Roller removal	87
4.2.11 PF motor removal	89
4.2.12 CR unit removal	91
4.2.13 Paper feed roller removal	94
4.2.14 Disassembling ASF frame unit	97
Adjustment	100
5.1 Overview	101
5.1.1 Required Adjustment	101
5.1.2 Adjustment Program feature	102
5.1.3 Adjustment Program Installation Procedure	103
5.1.4 Adjustment Program Initial Setting menu	103
5.1.5 Head ID Input	103
5.1.6 Bi-D Adjustment	105
5.1.7 USB ID input	107
5.1.8 Head Cleaning Operation	109
5.1.9 Initial Ink Charge Operation	110
5.1.10 Refurbishment for DOA	111
5.1.11 Protection Counter Check/Reset	112
5.1.12 Check pattern printing	114
5.1.13 EEPROM check function	115
5.1.14 CSIC Information	116
Maintenance	117
6.1 Overview	118
6.1.1 Cleaning	118
6.1.2 Service Maintenance	119
6.1.3 Lubrication	119
Appendix	123
7.1 Connector Summary	124
7.1.1 Major Component Unit	124
7.1.2 EEPROM Address Map	127
7.2 Component Layout	131
7.3 Exploded Diagram	133
7.4 Parts List	138

Match case Limit results 1 per page

EPSON Stylus COLOR 680/777/777i

Revision B

Troubleshooting

Troubleshooting with LED Error Indications

Table 3-16. Fatal Error indication

Step

No.

Detail phenomenon

Check point

Remedy

When the printer is

turned on, it sounds

strange noise and the

CR unit is stopped

around the CR lock

lever.

1. Check if the Top

housing is secured

with the fixing screw

at the front side.

2. Check if the Change

lever is placed to the

printer front side.

3. Check if the PF motor

is operated. Check the

CN7 connector and the

coil resistance for PF

motor.

4. If the CR lock lever is

not released even if the

PF motor rotate in the

power on sequence,

check if one of the

gears has any damage

in the PF motor torque

transportation path.

Refer to Figure 2-13.

1. Secure the Housing

fixing screw at the

printer front side.

2. Turn back the Change

lever to the printer back

side with the tweezer or

small screw driver.

3. Connect the PF motor

cable to CN7 on the

Main board.

Replace the PF motor

with new one.

4. Change the damaged

gear with new one.

5. If the problem is not

solved, replace the Main

board with new one.

Top housing

Change lever

Table 3-17. Paper is not ejected completely without any error indication

Step

No.

Detail phenomenon

Check point

Remedy

Printing is normal. But,

the paper is not ejected

completely and the

bottom area stay

around the Paper eject

frame.

1. Check if the Paper

eject roller rotate when

the paper is ejected.

2. Check if the Paper

eject frame is secured

with the three fixing

screws to the Main

frame.

1. Assemble the Spur gear

25.6 to the Combination

gear 11.6, 36.8.

2. Secure the Paper eject

frame witt the two fixing

screws to the Main

frame.

Paper eject frame

Spur gear 25.6