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UF-5500 / 4500
11.2.3.4. INFO CODE=021
"INFO CODE=021" means that the FAN does not run or the running of the FAN cannot be detected normally.
The running of the FAN is detected by IC300-AC20 and W24pin.
After repairing, copy. If “INFO CODE=021“ is displayed, check again.
After the LCD indicates "INFO CODE=021" , turn the power OFF/ON.
Replace the FAN.
Check IC300,
R530.
Does the Right
FAN run in the
FAN TEST: 4?
Check of the right FAN.
Is 22V output
from the
CN508-5pin?
Is 3.3V
supplied to the
IC504-3pin?
Check R508, R513, IC504,
Q512,R532, R529, Q510,
R525, R568, R505, R507
Is the pulse
output from the
CN508-6pin?
Check R569,
R570, C559, IC300.
INFO CODE=021
No
No
Yes
No
Yes
Yes
Yes
Replace the
Right FAN.
No
Replace the FAN.
Does the Left
FAN run in the
FAN TEST: 2?
Check of left FAN.
Is 22V output
from the
CN506-3pin?
Is the pulse
output from the
CN506-2pin?
INFO CODE=021
No
No
Yes
Yes
Yes
Replace the
Left FAN.
No
Check R521,
R531, C517,
IC300.
Check IC300,
R530.
Is 3.3V
supplied to the
IC504-3pin?
Check R508, R513, IC504,
Q512,R532, R529, Q510,
R525, R568, R505, R507
No
Yes
Содержание UF-5500
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