Brother International HL-2600CN Service Manual - Page 322
Cooling Fan EX 2 HTFAN, Concerned Part
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Error Code Concerned Part F4 Cooling Fan (EX) 2 (HTFAN) Confirm the connection of a heater fan connector. NO Is DCN14 of IOD1 properly connected with a connector of the heater fan ? Is DCN1 of IOD1 properly connected with 11CN of MCTL PWB 2? NO Check the voltage (HTFANON-P). Is the voltage between DCN14-10 and 11 to be a rising edge ? YES NO Is the voltage between DCN1-35 and 44 to be a rising edge ? YES Connect them properly. Is F4 error cleared ? NO Replace the heater fan. Replace the IOD1 PWB 2. YES Job is complete. NO Is F4 error cleared ? YES Job is complete. NO Replace the MCTL PWB 2. MCTL IOD1 11CN DCN1 DCN14 44 PGND 44 35 HTFANON-P 35 10 HTFANON-P 11 PGND 12 HTFANERR DCN2 +24V-1 17 PGND 25 Cooling Fan (EX) 2 HTFAN
Error Code
Concerned Part
Cooling Fan (EX) 2 (HTFAN)
F4
Confirm the connection of a heater fan connector.
Is DCN14 of IOD1 properly connected with a connector of the heater fan ?
Is DCN1 of IOD1 properly connected with 11CN of MCTL PWB 2?
Check the voltage
(HTFANON-P).
Is the voltage between DCN14-10 and 11 to be a rising edge ?
Is the voltage between DCN1-35 and 44 to be a rising edge ?
Is F4 error cleared ?
Job is complete.
Is F4 error cleared ?
Connect them properly.
Replace the MCTL PWB 2.
Job is complete.
MCTL
11CN
44
35
PGND
HTFANON-P
IOD1
DCN1
DCN14
HTFAN
YES
NO
NO
NO
YES
NO
44
35
HTFANON-P
PGND
HTFANERR
NO
Replace the heater fan.
Replace the IOD1 PWB 2.
+24V-1
PGND
DCN2
17
25
YES
YES
NO
10
11
12
Cooling Fan (EX) 2