Konica Minolta bizhub 250 Service Manual page 37

19.3.9 C2351: Toner Suction Fan Motor Failure .................................................. 241
19.3.10 C2557: ATDC Sensor Failure.................................................................... 242
19.3.11 C255C: ATDC Adjustment Failure ............................................................ 242
19.3.12 C2654: EEPROM Failure.......................................................................... 242
19.3.13 C2702: Abnormal Image Transfer Voltage ................................................ 242
19.3.14 C3451: Fusing Warm-Up Failure (Main) ................................................... 243
19.3.15 C3452: Fusing Warm-Up Failure (Sub) .................................................... 243
19.3.16 C3751: High Fuser Temperature Failure (Main) ....................................... 243
19.3.17 C3752: High Fuser Temperature Failure (Sub)......................................... 243
19.3.18 C3851: Low Fuser Temperature Failure (Main) ........................................ 244
19.3.19 C3852: Low Fuser Temperature Failure (Sub).......................................... 244
19.3.20 C4001: Main Unit Communication Failure ................................................ 245
19.3.21 C4002: HSYNC Detection Failure............................................................. 245
19.3.22 C4101: Polygon Motor Failure .................................................................. 246
19.3.23 C4721: Main Unit G/A Communication Failure ......................................... 246
19.3.24 C5102: Main Motor Failure ....................................................................... 246
19.3.25 C5351: Power Supply Cooling Fan Motor Failure ..................................... 247
19.3.26 C5352: Cooling Fan Motor Failure ............................................................ 247
19.3.27 C5353: IU Cooling Fan Motor Failure ....................................................... 247
19.3.28 CA052: MIO Device Failure ...................................................................... 248
19.3.29 CC153: Flash ROM Failure....................................................................... 248
20. Power supply trouble........................................................................................... 249
20.1 Machine is not Energized at All (PU1 Operation Check).................................. 249
20.2 Only the Power Supply Cooling Fan Motor turns.............................................. 249
20.3 The Start key (LED) on the control panel blinks green..................................... 250
21. Image quality problem......................................................................................... 251
21.1 How to identify problematic part ....................................................................... 251
21.2 Initial Check Items ............................................................................................ 251
21.2.1 Initial Check Items 1 ................................................................................. 251
21.2.2 Initial Check Items 2 ................................................................................. 252
21.3 Solution ............................................................................................................ 253
21.3.1 Scanner System: Blank copy or black copy .............................................. 253
21.3.2 Scanner System: Low image density or rough image .............................. 254
21.3.3 Scanner System: Foggy background ........................................................ 255
21.3.4 Scanner System: Black streaks or bands ................................................. 256
21.3.5 Scanner System: Black spots ................................................................... 257
21.3.6 Scanner System: White streaks or bands................................................. 258
21.3.7 Scanner System: Uneven pitch................................................................. 259
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EDNord - Istedgade 37A - 9000 Aalborg - telefon 96333500
Field Service Ver. 1.0 Aug. 2005