Epson ActionLaser 1600 Service Manual page 74

Principles of Operation
Gear
No.
Teeth
1 18 Main Motor (Ml)
2 23/38/126
3 29
4 14/32
5 43 P/C Drum
P/C Drum
6 30
7 47
29/41
8
26
9
10 23 Sleeve Roller
11 16/40
12 46/69 Paper Take-Up Roller
13 23 Transport Roller
14 16/75
*Optional lower paper cassette
Figure 2-17 shows the main motor drive circuit. The main motor (Ml) is a
four-phase stepping motor. This motor is controlled by the CPU (IC1A) on the
engine controller board (PWB-A). The power supply board (PWB-E) has a stepping
motor driver IC. This IC drives the main motor (M1)
The main motor (Ml) is stopped when the CPU (IC1A)
board (PWB-A) outputs TdA and TdB signals.
2-16
Table 2-1. Gears and Rollers
Roller Name
Figure 2-17. Main Motor Drive Circuit
Gear
No.
Teeth
15 36
16 54
17 15
18 39/48
19 15
20 24/32
21* 14/24
22* 18
18
23*
24* 18
16
25*
26* 16
27* 28
28 14
with a constant current.
on the engine controller
EPSON ActionLaser 1600 Service Manual
Roller Name
Upper Fusing Roller
Face-Down Exit Roller
Face-Up Exit Roller
Paper Take-up Roller
Transport Roller
Image Transfer Roller