T-21
(5)
Foggy background
<Typical Faulty Image>
<Troubleshooting Procedures>
(6)
White lines, white bands
<Typical Faulty Images>
<Troubleshooting Procedures>
Step
Check
Result
Action
1
Is PC Drum scratchy?
YES
Replace Drum Cartridge.
2
Is developing bias contact terminal in good
contact with the mating part?
NO
Clean contact terminal or
check terminal position.
3
Is PH window dirty?
YES
Clean.
4
Is the problem eliminated after checks have
been made up to step 3?
NO
Replace High Voltage Unit
(HV1).
Replace Controller/Mechani-
cal Control Board (PWB-P).
Step
Check
Result
Action
1
Is Image Transfer Roller dented, scratchy, or
dirty?
YES
Replace Image Transfer
Roller.
2
Is PC Drum scratchy or dirty?
YES
Replace Drum Cartridge.
3
Is Fusing Roller scratchy or dirty?
YES
Replace Fusing Unit (Fusing
Roller).
4
Is PH window dirty?
YES
Clean.
5
Is the problem eliminated after checks have
been made up to step 4?
NO
Replace Controller/Mechani-
cal Control Board (PWB-P).
4011T004AA
4011T015AA
4011T020AA
Summary of Contents for MF Series
Page 1: ...XEROX TECHNICAL DOCUMENT 252 787 467 A...
Page 73: ...4 NI IPL 252 787 467 A PLANCHE 1 FIGURE 1 3 2 1 4 7 6 5...
Page 75: ...6 NI IPL 252 787 467 A PLANCHE 2 FIGURE 2 1 3 5 6 2 4...
Page 77: ...8 NI IPL 252 787 467 A 2 1 PLANCHE 3 FIGURE 3...
Page 79: ...10 NI IPL 252 787 467 A PLANCHE 4 FIGURE 4 1 5 6 7 4 3 2 8...
Page 81: ...12 NI IPL 252 787 467 A 1 4 2 3 7 8 5 6 PLANCHE 5 FIGURE 5...
Page 83: ...14 NI IPL 252 787 467 A 1 2 3 4 5 6 7 8 PLANCHE 6 FIGURE 6...
Page 85: ...16 NI IPL 252 787 467 A 1 2 PLANCHE 7 FIGURE 7...
Page 87: ...18 NI IPL 252 787 467 A PLANCHE 8 FIGURE 8 1 2 4 5 3...
Page 89: ...20 NI IPL 252 787 467 A PLANCHE 9 FIGURE 9...
Page 91: ...22 NI IPL 252 787 467 A 2 1 PLANCHE 10 FIGURE 10...
Page 93: ...24 NI IPL 252 787 467 A 3 HV1 2 1 PLANCHE 11 FIGURE 11...
Page 95: ...26 NI IPL 252 787 467 A 1 22 21 3 4 2 8 9 7 6 PLANCHE 12 FIGURE 12...
Page 98: ...PRINTER 20 PPM SERVICE MANUAL TECHNICAL DOCUMENT 251 475 943 A...
Page 113: ...INDEX MECHANICAL ELECTRICAL GENERAL TROUBLESHOOTING DIS REASSEMBLY ADJUSTMENT MAINTENANCE...
Page 117: ...GENERAL...
Page 123: ...MECHANICAL ELECTRICAL...
Page 146: ...MAINTENANCE...
Page 156: ...DIS REASSEMBLY ADJUSTMENT...
Page 168: ...TROUBLESHOOTING...