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Epson 680Pro Service Manual - Page 124

Connector Summary, 7.1.1 Major Component Unit

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EPSON Stylus COLOR 680/777/777i 7.1 Connector Summary 7.1.1 Major Component Unit The Major component units of this printer are as follows. o Main Board (C383MAIN) o Power Supply Board (C383PSB/PSE) The figure below shows how these components connect. C383PSB/PSE CN2 CN1 AC Power CN10 C383MAIN CN8, CN9 CN7 CN12 CN3 CN1 CN11 CN4 USB Parallel I/F C383 PNL Printhead PF Motor CR Motor Printer Mechanism HP/PE Sensor Figure 7-1. Connection of the Major Components See the following tables for the connector summary for the C383MAIN board and each connector's pin alignment. Revision B Table 7-1. Connector Summary for C383MAIN/MAIN-B Connector Function Table to refer to CN1 For connection with the parallel interface Refer to "IEEE1284.4 Protocol" on page 19 CN3 For connection with the USB Refer to "USB" on page CN4 For connection with the HP/PE sensor Table 7-2 CN7 For connection with the PF motor Table 7-3 CN8, CN9 For connection with the printhead Table 7-5 CN10 For connection with the power supply board Table 7-6 CN11 For connection with the C383PNL board Table 7-x CN12 For connection with the CR motor Table 7-8 Table 7-2. CN4 - HP/PE Sensor Pin Signal Name I/O Function 1 HPPE In Sensor detect signal 2 GND --- Ground 3 HPPEV --- Sensor Power Supply Table 7-3. CN7 - PF Motor Pin Signal Name I/O Function 1 PFA Out Phase drive signal (A) 2 PFB Out Phase drive signal (-A) 3 PF-A Out Phase drive signal (B) 4 PF-B Out Phase drive signal (-B) Appendix Connector Summary 124

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

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EPSON Stylus COLOR 680/777/777i

Revision B

Appendix

Connector Summary

124

7.1 Connector Summary

7.1.1 Major Component Unit

The Major component units of this printer are as follows.

Main Board (C383MAIN)

Power Supply Board (C383PSB/PSE)

The figure below shows how these components connect.

Figure 7-1. Connection of the Major Components

See the following tables for the connector summary for the C383MAIN board and each

connector’s pin alignment.

CN8, CN9

CN12

CN4

Parallel I/F

CR Motor

Printhead

PF Motor

C383MAIN

CN7

CN1

CN10

HP/PE Sensor

C383PSB/PSE

CN2

CN1

AC Power

Printer Mechanism

USB

CN3

C383 PNL

CN11

Table 7-1. Connector Summary for C383MAIN/MAIN-B

Connector

Function

Table to refer to

CN1

For connection with the parallel interface

Refer to

“IEEE1284.4

Protocol” on page 19

CN3

For connection with the USB

Refer to “USB” on

page

CN4

For connection with the HP/PE sensor

Table 7-2

CN7

For connection with the PF motor

Table 7-3

CN8, CN9

For connection with the printhead

Table 7-5

CN10

For connection with the power supply board

Table 7-6

CN11

For connection with the C383PNL board

Table 7-x

CN12

For connection with the CR motor

Table 7-8

Table 7-2. CN4 - HP/PE Sensor

Signal Name

I/O

Function

HPPE

Sensor detect signal

GND

---

Ground

HPPEV

---

Sensor Power Supply

Table 7-3.

CN7 - PF Motor

Signal Name

I/O

Function

PFA

Out

Phase drive signal (A)

PFB

Out

Phase drive signal (-A)

PF-A

Out

Phase drive signal (B)

PF-B

Out

Phase drive signal (-B)