Epson R260 Service Manual - Page 25

Electrical Circuit Operating Principles, 2.2.1 Main Features, Main Features - stylus photo printer driver

Get Epson R260 - Stylus Photo Color Inkjet Printer PDF manuals and user guides
UPC - 010343859043
View all Epson R260 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 25 highlights

EPSON Stylus Photo R260/R265/R270, R360/R380/R390 2.2 Electrical Circuit Operating Principles The electric circuits of the Stylus Photo R260/R265/R270 and R360/R380/R390 consist of the following boards. Table 2-4. Main Boards & Model Numbers Board Name Main Board Power Supply Board Panel Board Card Board USB Board R360/R380/R390 R/260/R265/R270 C658MAIN C653MAIN C653PSB C658PNL + C658PNL-B C653PNL C658STG Not equipped Not equipped C653IF 2.2.1 Main Features † Features common to R260/R265/R270 and R360/R380/R390 „ The circuits support multi-common printing method that achieves high-speed printing reducing the number of carriage movements. † Features of C658Main Board (R360/R380/R390) „ The CPU incorporates an ASIC for controlling memory cards. The ASIC achieves high-speed access to a card. „ Employs SOC06H that incorporates one main processor and six image processing processors enabling concurrent processing for printing. „ 16-bit DDR1-SDRAM (166 MHz) memory for image processing on the local side enables a wide range of memory access. „ 72 MHz SDRAM is on the CPU bus as a system memory enabling a wide range of memory access. „ By employing a self-powered motor driver, the cost for supplying power to the RTC (5V) and USB HostVCC (6V), and for motor drive circuit are reduced. „ UBEC (Ultra Block Encode) allows MW buffer size to be reduced to one third the conventional size. „ Equips a 3.5inch Color TFT LCD as standard. Revision B † Features of C653Main Board (R260/R265/R270) „ The newly employed SOC achieves throughput enhancement. The incorporated USB host function offers USB host High Speed compatibility. † Operations to reduce power consumption The printer carries out the following operations to go into sleep mode. „ Decreases the power voltage „ Shuts off photoelectric current of photo interrupter sensors. „ Stops the motor drive circuit. „ Stops the UDL clock in the ASIC. „ De-energizes the motors „ Stops the head drive circuit „ High-efficiency power supply circuit (R360/R380/R390 only) „ Goes into CPU core low-power consumption mode (R360/R380/R390 only) „ Cuts power for the preview monitor (R360/R380/R390 only) „ Goes into SDRAM self-refresh mode (R260/R265/R270 only) Operating Principles Electrical Circuit Operating Principles 26

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
EPSON Stylus Photo R260/R265/R270, R360/R380/R390
Revision B
Operating Principles
Electrical Circuit Operating Principles
26
2.2
Electrical Circuit Operating Principles
The electric circuits of the Stylus Photo R260/R265/R270 and R360/R380/R390
consist of the following boards.
2.2.1
Main Features
Features common to R260/R265/R270 and R360/R380/R390
The circuits support multi-common printing method that achieves high-speed
printing reducing the number of carriage movements.
Features of C658Main Board (R360/R380/R390)
The CPU incorporates an ASIC for controlling memory cards. The ASIC
achieves high-speed access to a card.
Employs SOC06H that incorporates one main processor and six image
processing processors enabling concurrent processing for printing.
16-bit DDR1-SDRAM (166 MHz) memory for image processing on the local
side enables a wide range of memory access.
72 MHz SDRAM is on the CPU bus as a system memory enabling a wide
range of memory access.
By employing a self-powered motor driver, the cost for supplying power to
the RTC (5V) and USB HostVCC (6V), and for motor drive circuit are
reduced.
UBEC (Ultra Block Encode) allows MW buffer size to be reduced to one third
the conventional size.
Equips a 3.5inch Color TFT LCD as standard.
Features of C653Main Board (R260/R265/R270)
The newly employed SOC achieves throughput enhancement. The
incorporated USB host function offers USB host High Speed compatibility.
Operations to reduce power consumption
The printer carries out the following operations to go into sleep mode.
Decreases the power voltage
Shuts off photoelectric current of photo interrupter sensors.
Stops the motor drive circuit.
Stops the UDL clock in the ASIC.
De-energizes the motors
Stops the head drive circuit
High-efficiency power supply circuit (R360/R380/R390 only)
Goes into CPU core low-power consumption mode (R360/R380/R390 only)
Cuts power for the preview monitor (R360/R380/R390 only)
Goes into SDRAM self-refresh mode (R260/R265/R270 only)
Table 2-4.
Main Boards & Model Numbers
Board Name
R360/R380/R390
R/260/R265/R270
Main Board
C658MAIN
C653MAIN
Power Supply Board
C653PSB
Panel Board
C658PNL + C658PNL-B
C653PNL
Card Board
C658STG
Not equipped
USB Board
Not equipped
C653IF