II-5
2.3
Main PCB
2.3.1 Data
Reception
IEEE1284 bi-directional nibble mode is supported. The data reception operation is
performed by the gate array. The CINT-N signal from the gate array indicates the
reception of data to the CPU and control data is processed by the CPU. The printing
data is transmitted directly to the memory without being transmitted to the CPU.
#4
#7
#8
P8
19
18
IPINT-N
SELECT IN-N
INPUTPRIME-N
CINT-N
CPU
G/A
SRAM
Parallel
I/F connector
Fig. 2.4
2.3.2
Control Panel
The control panel controls two switch signal inputs and four LEDs. Two out of four LEDs
correspond to each of the ink cartridges. The cover switch is contained in the switch
panel. When this switch is OFF, the cover is open and printing is disabled. However,
operations associated with cartridge replacement with the cover open are allowed.
SW 1 on the Main PCB functions as the (On/Off) button and stops all the operations
and turns off the LEDs, but does not turn the power off.
P2
MHP Sensor
Maintenance
unit
CPU
P7
5
9
8
11
10
COVER SW
LED ALARM
LED POWER
ONLINE / Power SW
LED INKBC
LED INKMY
Purge SW
Fig. 2.5
Содержание MP-21C
Страница 1: ......
Страница 2: ...SERVICE MANUAL MODEL MP 21C 21CDX ...
Страница 7: ...Chapter I FEATURES AND SPECIFICATIONS ...
Страница 11: ...I 3 3 CONFIGURATION 3 1 Mechanics Overview Fig 1 1 MP 21C MP 21CDX ...
Страница 29: ...Chapter II THEORY OF OPERATION ...
Страница 52: ...Chapter III DISASSEMBLY AND REASSEMBLY ...
Страница 95: ...III 42 Pick up roller ASSY EM2 EM2 Fig 3 64 ...
Страница 100: ...Chapter IV TROUBLESHOOTING ...
Страница 119: ...IV 18 LED INDICATING THE ERROR Example ROM error Power LED Alarm LED Ink BC LED Ink MY LED A lapse of time ON OFF ...
Страница 120: ...Appendix ...
Страница 122: ...Appendix 1 Head PCB Circuit Diagram CODE UJ7041000 MPHEAD SCH01 NAME A 1 ...
Страница 123: ...Appendix 2 Main PCB Circuit Diagram 1 3 CODE UJ7040000 MPMAIN SCH01P1 NAME A 2 ...
Страница 124: ...Appendix 3 Main PCB Circuit Diagram 2 3 CODE UJ7067000 MPMAIN SCH01P2 NAME A 3 ...
Страница 125: ...Appendix 4 Main PCB Circuit Diagram 3 3 CODE UJ7068000 MPMAIN SCH01P3 NAME A 4 ...
Страница 126: ...Appendix 5 Cartridge Sensor Circuit Diagram A 5 CODE UJ7061000 MPCTRG SCH01 NAME ...
Страница 134: ...R Mar 99 5H1002BE0 ...
Страница 136: ...UJ5394001 A Printed in Japan ...
Страница 157: ...UJ5351001 Printed in Japan ...
Страница 212: ...USER S GUIDE Index 2 T Transparencies 2 1 W Windows 5 6 ...
Страница 213: ...PARTS REFERENCE LIST MODEL MP 21C 21CDX R COLOR INKJET PRINTER ...
Страница 224: ... 9 8 ATTACHMENTS MODEL MP 21C CDX 5H1 001 002 910 4 3 5 6 1 2 7A 7B 7C 7D 7E ...
Страница 227: ...Mar 99 54H1002BE0 R ...