Diagnostic Information
2-21
4079-00X
FRU
Action
1
• Printhead
• Carriage
Board
Use the codes in the
“Error Code Table” on page 2-2
to identify the printhead you think may be failing. Be
sure the printhead is seated properly and the head
cover is fully closed.
Check the voltage to the printhead as read by the
analog switch IC2 on the carriage board.Check the
resistance and voltage between each pin and frame
ground. Be sure to turn off the printer when you
check resistance.
Black Head - pin 12 should read 2k - 4k Ohms, and
1.02 - 5.03 V dc. Black head, pin 4 should read 1.74
- 4.46 V dc.
Cyan Head - pin 15 should read 2k - 4k Ohms, and
1.02 - 5.03 V dc. Cyan head, pin 2 should read 1.74
- 4.46 V dc.
Magenta Head - pin 14 should read 2k - 4k Ohms,
and 1.02 - 5.03 V dc. Magenta head, pin 1 should
read 1.74 - 4.46 V dc.
Yellow Head - pin 13 should read 2k - 4k Ohms, and
1.02 - 5.03 V dc. Yellow head, pin 5 should read 1.74
- 4.46 V dc.
If the signals are incorrect, replace the defective
printhead. If the signals are correct, replace the car-
riage board.
Содержание Jetprinter 4079-00 series
Страница 10: ...x Service Manual 4079 00X Chinese Safety Information Korean Safety Information...
Страница 71: ...Diagnostic Aids 3 6 4079 00X Follow this chart to choose the correct print mode...
Страница 99: ...Repair Information 4 22 4079 00X Carriage cable 19 pin Carriage cable 20 pin...
Страница 129: ...Connector Locations 5 2 4079 00X Right Connector Card Left Connector Card...
Страница 130: ...5 3 4079 00X Control Card 4079 001...
Страница 131: ...Connector Locations 5 4 4079 00X Control Card 4079 002 J8 1 1 1 1 J5 J3 J7 J1 J6...
Страница 132: ...5 5 4079 00X Logic Card...
Страница 138: ...7 2 4079 00X Assembly 1 Covers...
Страница 140: ...7 4 4079 00X Assembly 2 Covers Cont...
Страница 142: ...7 6 4079 00X Assembly 3 Inner Cover...
Страница 144: ...7 8 4079 00X Assembly 4 Printer Electronics...
Страница 146: ...7 10 4079 00X Assembly 5 Power Supply and Control Panel...
Страница 148: ...7 12 4079 00X Assembly 6 Carriage and Printhead...
Страница 150: ...7 14 4079 00X Assembly 7 Base...
Страница 152: ...7 16 4079 00X Assembly 8 Purge Unit...
Страница 154: ...7 18 4079 00X Assembly 9 Print Timing Encoder...
Страница 156: ...7 20 4079 00X Assembly 10 Carriage Ink Supply...
Страница 158: ...7 22 4079 00X Assembly 11 Carriage Drive...
Страница 160: ...7 24 4079 00X Assembly 12 Carriage Drive Frame...
Страница 162: ...7 26 4079 00X Assembly 13 Ink Supply Unit...
Страница 164: ...7 28 4079 00X Assembly 14 Ink Return Unit...
Страница 166: ...7 30 4079 00X Assembly 15 Ink Cartridge Interlock...
Страница 168: ...7 32 4079 00X Assembly 16 Sheetfeed Entry...
Страница 170: ...7 34 4079 00X Assembly 17 Sheetfeed Pinch Roller...
Страница 172: ...7 36 4079 00X Assembly 18 Paperfeed Ejector Roller...
Страница 174: ...7 38 4079 00X Assembly 19 Sheetfeed Separation...
Страница 176: ...7 40 4079 00X Assembly 20 Paperfeed Frame...
Страница 178: ...7 42 4079 00X Assembly 21 Tools...
Страница 180: ...7 44 4079 00X Assembly 22 Hard Disk and Options...