5.7.2 MainBoard
ASP
ASIC
ASIC
CPU
78e516
J1
J2
J11
Host
J13
J4
RAM
MOTOR
DRIVER
Figure 5-11 Main Board of Film Scanner
Connector J1 on Scanner 2740S MainBoard
J1 is connected to the line motor to drive the stepping motor.
Pin # Signal name Description
1 LM1A Line motor pulse phase 1 of coil A
2 LM1B Line motor pulse phase 1 of coil B
3 LM2A Line motor pulse phase 2 of coil A
4 LM2B Line motor pulse phase 2 of coil B
5-12 API Confidential Electrical Systems
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