174
UF-5500 / 4500
11.2.13. Motor Section
11.2.13.1. Engine Motor
NO
Check Mechanical Torque. OK?
Does MOTOR rotate to clockwise
manually ?
YES
Check Pin1 & 2 of CN1on Motor.
Is 24V supplied?
NO
Check Pin6 of CN1on Motor.
Is the signal Low ?
Engine MOTOR
Check Mechanical parts
such as Drum Unit and Fuser.
YES
YES
Check voltage of Pin1, 2 of CN502 . OK?
Check soldering of L507. OK?
NO
Check Power supply or Power supply Harness
YES
NO
Check the voltage of Pin6 of CN502 .
Is the signal "L" ?
NO
NO
YES
Replace IC300
Check Pin7 of CN1on Motor.
Is the pulse signal supplied ?
YES
Check soldering of Q525. OK?
YES
Check Pin7 of CN502.
Is the pulse signal generated ?
Check soldering of Q502. OK?
Repair
NO
Check Pin8 of CN1on Motor.
Is the signal Low ?
YES
YES
YES
Replace Motor
Check Pin5 of CN1on Motor.
Is the signal Low ?
NO
YES
Check soldering of Q526. OK?
NO
NO
Check the voltage of Pin8 of CN502.
Is the signal Low ?
Check soldering of R512,515, OK?
YES
NO
NO
Repair
NO
Repair
Repair
YES
Repair
YES
NO
Replace Harness
NO
NO
Replace Harness
or Motor
YES
Replace Motor
Is the level of Q502 base "H" ?
YES
Replace Q502
NO
Is the status of Q525 base "pulse" ?
YES
Replace Q525
Replace IC300
NO
Replace IC300
Is the level of Q526 base "H" ?
YES
Replace Q526
NO
YES
Replace Harness
or Motor
Replace Harness
or Motor
Replace Harness
or Motor
Summary of Contents for UF-4500
Page 180: ...180 UF 5500 4500 ...
Page 248: ...248 UF 5500 4500 13 5 Test Chart 13 5 1 ITU T No 1 Test Chart ...
Page 249: ...249 UF 5500 4500 13 5 2 ITU T No 2 Test Chart ...
Page 281: ...281 UF 5500 4500 10 10 11 15 12 17 18 19 20 21 22 23 24 28 29 30 27 25 26 21 13 14 16 30 ...
Page 287: ...287 UF 5500 4500 130 131 132 133 134 135 136 137 138 139 140 141 PCB2 A UF 5500 only CN1 ...
Page 297: ...297 UF 5500 4500 ...
Page 305: ...305 UF 5500 4500 ...
Page 311: ...311 UF 5500 4500 501 502 503 504 506 507 505 508 509 511 510 514 513 512 P51 P53 P54 A51 P52 ...
Page 362: ...362 UF 5500 4500 ...