4012-0XX
11
Power Service Check
The operator panel power key does not control line power. With the
machine turned off the power supply is still active and there is volt-
age to both the fax and printer boards. To remove power you must
unplug the machine.
FRU Action
1
Power Supply
Disconnect J2 from the fax board, J11
from the printer board and check the fol-
lowing voltages on both power supply
cables:
Pin-1 to GND = +5 V dc
Pin-3 to GND = +34 V dc
If you do not have correct voltage, replace
the power supply. Be sure to unplug the
machine before you reconnect the power
supply to the boards.
2
Printhead Cable
Parallel Cable
Unplug the machine. Disconnect one of
the listed components and plug in the
machine. Look for a symptom change.
Check the failing part for shorts and
replace as necessary. Repeat this proce-
dure for the remaining listed parts.
3
Printer Board
Disconnect the fax board from the printer
board. Run the Print Engine Test. If the
test does not run and there are no
mechanical problems, replace the printer
board.
4
Fax Board
Check for +5 V dc at the fax board J9-4,
and check for +34 V dc at J9-2. If the volt-
ages are incorrect replace the fax board.
Содержание Medley 4012-005
Страница 9: ...ix 4012 0XX Chinese Safety Information Korean Safety Information ...
Страница 59: ...Parts and Test Point Locations 50 4012 0XX Fax Board J4 J5 J6 J7 J8 J9 J10 J11 J12 J1 J2 J3 ...
Страница 66: ...4012 0XX 57 Assembly 1 Covers 9 19 1 20 21 3 6 4 10 5 15 8 2 11 22 7 ...
Страница 68: ...4012 0XX 59 Assembly 2 Frame 2 9 10 3 4 1 8 8 6 5 7 ...
Страница 70: ...4012 0XX 61 Assembly 3 Operator Panel 9 3 10 2 1 6 5 4 8 7 11 ...
Страница 72: ...4012 0XX 63 Assembly 4 Printer Paper Feed Assembly 4 6 7 9 8 1 2 3 5 ...
Страница 74: ...4012 0XX 65 Assembly 4 Printer Paper Feed Assembly cont 11 13 12 11 10 14 ...
Страница 76: ...4012 0XX 67 Assembly 5 Carrier 3 1 4 6 1 2 5 ...
Страница 78: ...4012 0XX 69 Assembly 6 Carrier Transport 1 2 4 5 3 6 7 ...
Страница 80: ...4012 0XX 71 Assembly 7 Maintenance Station 3 1 4 2 ...
Страница 82: ...4012 0XX 73 Assembly 8 Scanner 3 6 9 10 7 1 4 2 8 5 14 12 13 ...
Страница 84: ...4012 0XX 75 Assembly 9 Electronics ...
Страница 86: ...4012 0XX 77 Assembly 10 Automatic Sheet Feed ASF 10 4 2 7 6 11 1 8 7 9 3 5 ...