Epson C117001-N Service Manual - Page 45

Tension Roller and PF Roller Operation, Tractor Select, Mechanisms - dfx tractor assy pull

Get Epson C117001-N - DFX 5000+ B/W Dot-matrix Printer PDF manuals and user guides
UPC - 010343816480
View all Epson C117001-N manuals
Add to My Manuals
Save this manual to your list of manuals

Page 45 highlights

Operating Principles DFX-5000+ Service Manual 2.1.4 Paper Feed Mechanism Figures 2-7, 2-8, and 2-9 show the paper feed mechanism. After you load paper, it is fed by the tension roller, PF roller, and front or rear tractor assembly. The PF motor rotates the tension roller and tractor select gear (Figure 2-7) and moves either the front or rear tractor assembly. The rotation of the paper feed transmission gear rotates the tractor select gear, which can engage either tractor train. The tractor select mechanism alternates the engagement of the rear tractor assembly gear train and front tractor assembly gear train. (Refer to Section 2.1.5, Ribbon Feed and Tractor Select Mechanisms, for more information.) The front and rear PE sensors are incorporated in the tractor sprocket. When paper is loaded, the paper pushes the leaf spring and blocks the photo interrupter. When no paper is loaded, the photo interrupter is not blocked. The top PE sensor is attached to the upper paper guide and is used with the reflection plate on the paper bail assembly. When paper is loaded, the paper surface reflects the beam; when there is no paper, the beam is absorbed (not reflected). The pull tractor sensor monitors whether the pull tractor is installed. SENSOR ASSY., TRACTOR SENSOR ASSY., PE, UPPER APER BAIL LEVER TIMING BELT, PF ") M- TRACTOR SELECT TRANSMISSION GEAR ~D \, , ol~l ( @ = - 4 / 'K -1'G . . 1 (' w PAPER FEED MOTOR Pinicon Gear Figure 2-7. Tension Roller and PF Roller Operation 24 Rev. A

  • 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
  • 170
  • 171
  • 172
  • 173
  • 174
  • 175
  • 176
  • 177
  • 178
  • 179
  • 180
  • 181
  • 182
  • 183
  • 184
  • 185
  • 186
Operating Principles
DFX-5000+
Service Manual
2.1.4
Paper Feed Mechanism
Figures 2-7, 2-8, and 2-9 show the paper feed mechanism. After you load paper, it is fed by the
tension roller, PF roller, and front or rear tractor assembly. The PF motor rotates the tension roller
and tractor select gear (Figure 2-7) and moves either the front or rear tractor assembly. The rotation
of the paper feed transmission gear rotates the tractor select gear, which can engage either tractor
train. The tractor select mechanism alternates the engagement of the rear tractor assembly gear
train and front tractor assembly gear train. (Refer to Section 2.1.5,
Ribbon
Feed
and
Tractor Select
Mechanisms,
for more information.)
The front and rear PE sensors are incorporated in the tractor sprocket. When paper is loaded, the
paper pushes the leaf spring and blocks the photo interrupter. When no paper is loaded, the photo
interrupter is not blocked. The top PE sensor is attached to the upper paper guide and is used with
the reflection plate on the paper bail assembly. When paper is loaded, the paper surface reflects the
beam; when there is no paper, the beam is absorbed (not reflected). The pull tractor sensor
monitors whether the pull tractor is installed.
SENSOR
ASSY.,
TRACTOR
SENSOR
ASSY.,
PE, UPPER
APER BAIL LEVER
TIMING BELT,
PF
M–
“)
TRACTOR SELECT
‘KG
\
TRANSMISSION GEAR
~D
,
,
ol~l
-1’
1
. .
(’
@=-4/
(
PAPER FEED MOTOR
w
Pinicon Gear
Figure 2-7. Tension Roller and PF Roller Operation
24
Rev.
A