Table Of Contents - Epson Stylus Photo 720 Service Manual

EPSON Stylus Photo 720 / EPSON Stylus Photo EX3
Product Description
Overview ....................................................................................................... 9
Features ................................................................................................... 9
Basic Specification .................................................................................... 10
Printing Specification .............................................................................. 10
Paper Feed specification ........................................................................ 11
Input Data Buffer .................................................................................... 11
Electric Specification .............................................................................. 11
Environmental Conditions ...................................................................... 12
Reliability ................................................................................................ 12
Safety Approvals .................................................................................... 12
Acoustic Noise ........................................................................................ 12
CE Marking ............................................................................................. 12
Interface Specification .............................................................................. 13
IEEE-1284 Parallel I/F (Forward Channel) ............................................. 13
IEEE-1284 Parallel I/F (Reverse Channel) ............................................. 13
USB (Universal Serious Bus) ................................................................. 16
Miscellanea ............................................................................................ 16
Preventing Hosts from Data Transfer Time-out .................................. 16
Interface Selection .............................................................................. 16
IEEE 1284.4 protocol ......................................................................... 17
Control Specification ................................................................................ 18
Control Panel .......................................................................................... 18
Control Switches .................................................................................... 18
Code Page Selection/ Parallel I/F IEEE1284.4 Setting ...................... 19
Special Setting Mode ......................................................................... 20
LED Indications ...................................................................................... 20
Initialization ............................................................................................. 21
Errors ...................................................................................................... 21
Paper ........................................................................................................... 22
Paper handling ....................................................................................... 22
Paper Specification ................................................................................ 22
Contents
Printable Area ........................................................................................ 24
Ink Cartridge ........................................................................................... 26
Physical Specification .............................................................................. 27
Consumables and Options ....................................................................... 28
Operating Principles
Overview .................................................................................................... 30
Printer Mechanism ................................................................................. 30
Printhead ................................................................................................ 32
Printing Process ................................................................................. 33
Printing Method .................................................................................. 34
Carriage Mechanism .............................................................................. 35
Platen Gap (PG) Adjustment Mechanism .......................................... 35
Paper Feeding Mechanism .................................................................... 36
Paper Loading Mechanism (ASF Unit) ................................................... 37
Ink System Mechanism .......................................................................... 39
Pump Unit and CR Lock Mechanism ................................................. 39
Capping Mechanism .............................................................................. 40
Ink Sequence ......................................................................................... 41
Electrical Circuit Operating Principles .................................................... 42
C301PSB/PSE Board ............................................................................. 42
C301MAIN Board ................................................................................... 44
Main elements .................................................................................... 45
Printhead Driver Circuit ...................................................................... 45
PF Motor (PF/ PUMP/ ASF Motor) Driver Circuit ............................... 47
CR Motor Driver Circuit ...................................................................... 48
Reset Circuit ....................................................................................... 48
EEPROM Control Circuit .................................................................... 49
Sensor Circuit ..................................................................................... 50
Revision A
6