Epson Stylus Color 400 Service Manual Page 24
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EPSON Stylus Color 400 Service Manual
Rev. A
1-1
7
Following lists “Notes” when using Parallel Interface.
Note1) “
Return GND pin” in the table means twist pair return and is used for all control signals
except for Logic H,+5V, Chassis, GND and NC. In this twist pair return, returning side
is connected to GND (16,33, 19-30 pin) for twist pair return. Also, these cables are shielded
wires and it is effective to connect to each chassis GND in the PC and printer for electrostatic
noise.
Note2)
Conditions for Interface are based on TTL level. Rise and fall time should be within 0.2µs.
Note3)
Refer to the figure 1-8 for transmission timing of each signals.
Note4)
Do not perform data transmission ignoring /ACK or BUSY signal. (Perform the data transmission
after confirming that /ACK and BUSY signals are Low.)
Note5)
It is possible to perform the printing test including interface circuit without using equipment
from outside when 8-bit data signal(20-27 pin) is set to appropriate word code and connect
them forcefully to /ACK and /STRB.
[Data Transmission Timing for Forward Channel]
Parameter Minimum Maximum
tsetup 500ns ---
thold 500ns ---
tstb 500ns ---
tready 0 ---
tbusy --- 500ns
tt-out* --- 120ns
tt-in** --- 200ns
treply 0 ---
tack 500ns 10us
tnbusy 0 ---
tnext 0 ---
* Rise and fall time of every output signals.
** Rise and fall time of every input signals.
Typical time of tack is shown below.
Parallel I/F mode Typical time of tack
High speed 2us
Normal speed 4us
Byte Data n Byte Data n+1
Thold
Tsetup
Tstrb
Tnext
Tready Tbusy
Treply
Tack Tnbusy
Data
/STROBE
BUSY
/ACKNLG
Figure 1-8. Parallel Interface Timing Chart(Forward Channel)
Table 1-12. Maximum and Minimum Timing for Data Transmission
Table 1-13. Typical Time of Tack
- SERVICE MANUAL 1
- Copyright 2
- Nagano, Japan 2
- PRECAUTIONS 3
- REVISION SHEET 5
- TABLE OF CONTENTS 6
- Chapter 1 7
- Product Descriptions 7
- 1.1 Features 8
- 1.2 Specifications 9
- 1.2.2 Paper Specification 11
- 1.2.4 Printing Area 13
- Printable area 14
- 1.2.5 Environmental Condition 15
- Chapter1 Product Description 17
- Note 3) 17
- 1.2.7 Physical Specification 18
- 1.2.8 Input Data Buffer 18
- 1.2.9 Electric Specification 19
- 1.2.10 Reliability 19
- 1.2.11 Safety Approvals 19
- 1.2.12 Acoustic Noise 20
- 1.2.13 CE Marking 20
- 1.3 Interface 22
- Tready Tbusy 24
- Tack Tnbusy 24
- Virtual Busy Status 25
- 1.4 Control Panel 26
- 1.4.2 Panel Functions 27
- 1.5 Error Status 30
- 1.5.4 No Ink-Cartridge 31
- 1.5.5 Maintenance Request 31
- 1.5.6 Fatal Errors 31
- 1.6 Printer Initialization 32
- 1.7 Initialization Settings 32
- 1.8 Main Components 33
- 1.8.4 C206PNL(Panel) Board 34
- Chapter 2 35
- Operating Principles 35
- 2.1 OVERVIEW 36
- 2.1.1.1 Printing Mechanism 37
- Nozzle Plate 38
- Ink Course 38
- 2.1.1.1.2 Printing Method 39
- Nozzle No.#9 40
- Nozzle No.#4 40
- Full-Overlap Micro-Weave: 41
- 2.1.1.2 Carriage Mechanism 42
- Parallelism 44
- Adjust Lever 44
- Eject Notched Roller 48
- Eject Roller 48
- PF Roller 48
- Support Roller 48
- 2.1.1.4 Ink System 49
- 2.1.1.4.1 Pump Mechanism 50
- CW Rotation 51
- CCW Rotation 51
- Tube pressured 51
- Tube released 51
- 2.1.1.4.2 Cap Mechanism 52
- +42 V DC 53
- Filter Circuit 55
- Prevention of 55
- Rectifier circuit 55
- Full Wave 55
- 2.2.2 C206 MAIN Board 56
- 2.2.2.1 Reset Circuits 58
- 2.2.2.2 Sensor Circuits 59
- 2.2.2.4 Timer Circuit 61
- 2.2.2.5 DRAM Control 61
- Gate Array 63
- E05B43(IC2) 63
- E05B44(IC2) 66
- LB1845(IC15) 66
- Chapter 3 67
- Disassembly and Assembly 67
- 3.1 OVERVIEW 68
- 3.1.2 Tools 69
- 3.2 Disassembly Procedures 71
- 3.2.1 Removing the Housing 72
- WORK POINT 73
- Fastener Head 77
- Print Head Unit 77
- Head Cleaner 80
- Order of assembling 80
- PF Roller Assembly 91
- HP Detector 93
- Chapter 4 94
- Adjustment 94
- 4.1 Overview 95
- 4.2 Adjustment 96
- Print Head Side 97
- Cleaner Head 97
- Overlap amount 97
- = More than 0.5mm 97
- Print Head 102
- 4.2.2.5 Bi-D Adjustment 103
- Chapter 5 105
- Troubleshooting 105
- 5.1 Troubleshooting 106
- Rev.A5-2 107
- Rev.A5-4 109
- 5.2.2 Error is detected 110
- Rev.A5-6 111
- Rev.A5-8 113
- Rev.A5-10 115
- Rev.A5-12 117
- Rev.A5-14 119
- Chapter 6 121
- Maintenance 121
- 6.1 OVERVIEW 122
- 6.1.3 Lubrication 123
- Chapter 6 Maintenance 124
- (Oil pad) 125
- Carriage Assembly 125
- (bottom view) 125
- "SHAFT, CR, GUIDE" 125
- "GEAR, 23.2" 127
- "GEAR, 16, 40.8" 127
- "GEAR, 67.2" 127
- "COMBINATION GEAR 127
- 8, 14.4" 127
- "HOPPER, ASSEMBLY" 128
- "FRAME, ASF" 128
- Appendix 129
- A.1 Connector Summary 130
- A.2 Connector Summary 131
- A.3 EEPROM Address Map 133
- A.5 Exploded Diagrams 141
- As of September, 1996 144
- SEIKO EPSON CORPORATION 145
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