Perfection 4870 Photo
Revision A
TROUBLESHOOTING
Troubleshooting
32
Figure 3-1. The Main Unit does not perform initialization operation.
Figure 3-2. The Carriage Unit does not operate.
Are all connectors
normal?
Can the CR Motor
operate normally?
Do the lamps
light up?
Start
Reexamine the
connection.
Replace the Main
Board.
Has the fuse
of the power
supply blown
out?
Replace the Power
Supply Board.
Replace the CR
Motor.
Replace the Power
Supply Board.
Has the
Carriage Lock been
released?
Is the Carriage
Moving Mechanism
without problem?
Start
Release the
Carriage Lock.
Replace the CR
Motor.
Can the CR Motor
operate normally?
Is the Housing
Upper installed
correctly?
Install it normally.
Is the
Connector CN6
on the Main
Board
connected?
Connect the
Connector.
Replace the
corresponding part.
Re-disassemble and
re-assemble.
Replace the Main
Board.
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 ...
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