Perfection 4870 Photo
Revision A
OPERATING PRINCIPLES
Engine Operation Outline
23
2.1.2.2 TPU Carriage Moving Mechanism operation
The TPU Carriage Unit slides along the guide rail in the sub scanning direction. To
perform this sliding operation, the TPU CR (Carriage) Motor transmits its drive power
to the TPU CR Timing Belt, which is fixed to the Carriage Unit, via the Drive Pulley
and the Deceleration Gear. The TPU CR Motor uses a stepping motor and is driven
under open loop control.
Figure 2-6. TPU Carriage Operation
Front
Rear
TPU Carriage Unit
Driven Pulley
TPU CR Timing Belt
TPU CR Motor
Deceleration Gear
Drive Pulley
Summary of Contents for Perfection 4870 Photo
Page 1: ...EPSON Perfection4870Photo Color Image Scanner Service Manual SESC03 008 ...
Page 5: ...Revision Status Revision Date of Issue Description A December 10 2003 First release ...
Page 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 19: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 29: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 37: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Page 63: ...C H A P T E R 5 ADJUSTMENT ...
Page 65: ...C H A P T E R 6 MAINTENANCE ...
Page 68: ...C H A P T E R 7 APPENDIX ...
Page 71: ......
Page 72: ......
Page 73: ......
Page 74: ......
Page 75: ......
Page 76: ......
Page 77: ......
Page 78: ......
Page 79: ......
Page 80: ......
Page 81: ......