Dell 1135N Service Manual - Page 105

Black/White Spot

Get Dell 1135N PDF manuals and user guides View all Dell 1135N manuals
Add to My Manuals
Save this manual to your list of manuals

Page 105 highlights

Alignment and Troubleshooting 4) Black/White Spot Description : 1. Dark or blurry spots occur periodically in the printing 2. White spots occur periodically in the printing 1. If dark or blurry black spots occur periodically, the rollers in the Developer may be contaminated with foreign material or paper particles. (Charge roller : 26.7mm interval OPC drum : 75.5mm interval) Print several OPC cleaning Mode Prints and then run the Self-test 2 or 3 times. 2. If faded areas or voids occur in a black image at intervals of 75.5 mm, or black spots occur elsewhere, the OPC drum surface is damaged. 3. If a black image is partially broken, the transfer voltage is abnormal or the transfer roller's life has expired. In case of 75.5 mm interval unremovable in 1, Clean foreign substances stuck on the OPC location equivalent to black spots and white spots with a dry cotton cloth. 1. The transfer roller has expired [50.000 sheets]. Replace it. 2. In case of 47 mm interval unremovable in 1, take measures as to replace the developer cartridge and try to print out. 3. Clean the inside of the set against the paper particles and foreign matter in order not to cause the trouble. Service Manual 4-32

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
  • 162
  • 163
  • 164
  • 165
  • 166
  • 167
  • 168
  • 169
Alignment and Troubleshooting
4-32
Service Manual
4) Black/White Spot
Description :
1. Dark or blurry spots occur periodically in the printing
2. White spots occur periodically in the printing
3. If a black image is
partially broken, the transfer voltage is
abnormal or the transfer roller's
life has expired.
2. If faded areas or voids
occur in a black image at intervals
of 75.5 mm, or black spots occur elsewhere,
the OPC drum surface is
damaged.
In case of 75.5 mm interval
unremovable in 1, Clean foreign
substances stuck on the OPC location
equivalent to black spots and white
spots with a dry cotton cloth.
1. The transfer roller has expired
[50.000 sheets]. Replace it.
2. In case of
47 mm interval
unremovable in 1, take measures
as to replace the developer
cartridge and try to print out.
3. Clean the inside of the set against
the paper particles and foreign
matter in order not to cause the
trouble.
Print several OPC cleaning Mode
Prints and then run the Self-test
2 or 3 times.
1. If dark or blurry
black spots occur periodically,
the rollers in the Developer may be conta-
minated with foreign material or paper particles.
(Charge roller : 26.7mm interval
OPC drum : 75.5mm interval)