Epson LX-300+ Service Manual

LX-300+/1170 Revision C
Operating Principles Printer Mechanism 53
2.2.5 Paper Feed Mechanism
This mechanism consists of paper feed motor (PF motor), paper feed gears, platen, rear
paper end detector, bottom paper end detector and push tractor unit. (Refer to Refer to
Figure 2-2.)
o Paper Feed Method
n Friction feed
n Push tractor feed
Uses standard push tractor
n Push-pull tractor feed
Uses standard push tractor + Option tractor
n Pull tractor feed
Replace the standard push tractor with option tractor
o Feeder
n Simple CSF (option)
n Tractor (standard)
Push / Pull
n Pull tractor (option)
n Roll paper holder
o Paper path
n Manual loading
Rear paper load, top paper load
n CSF
Rear paper load, top paper load
n Push tractor
Rear paper load, top paper load
n Pull tractor
Rear / Bottom paper load, top paper load
o Auto loading
When loading paper manually, push paper between the platen and the driven paper
load roller. Paper will be loaded automatically.
PF MOTOR
LX-300+/1170 uses a stepping motor for PF motor. Open loop control switches the phases
according to the setting period and this mechanism loads and carries paper to the appointed
position and eject paper.
The table below is the PF motor specifications.
Table 2-10. PF Motor Specifications
Item Specification
Motor type 2-phase/96-pole Hybrid stepping motor
Coil resistance 16.0Ω ±10% (25°C, per 1 phase)
Control method bi-polar rated current drive
Phase drive 1-2 phase, W1-2 phase
Drive voltage
36.75 ± 1.75 VDC
(This voltage is added to driver.)
Drive current 0.1to0.9A
Paper feed pitch
Minimum Resolution:
0.059 mm (1/432”) (1-2 phase, 2 pass)

Epson LX-300+ Specifications

General

Emulation	Epson ESC/P, IBM PPDS
Print Method	9-pin, impact dot matrix
Interface	Parallel
Paper Handling	Friction feed
Dimensions	366 x 275 x 159 mm
Paper Width	4 - 10 inches