Repair Information 4-20
4227-100
Main Logic Board Removal
1. Remove the top cover.
See
“Top Cover Removal” on page 4-37
2. Disconnect all cables connected to the main logic board.
3. Remove the three screws at the rear edge of the board and
remove the board.
4. Remove the EPROM from the old board and install it on the new
one.
Reinstallation: After replacing the main logic board, recheck the
“Bidirectional Print Adjustment” on page 4-4
Platen Gap Adjustment” on page 4-2
.
Memory Module Removal
The Memory Module is an option.
1. Turn the printer Off and disconnect the power cord at the
printer.
2. Remove the rear cover.
3. Remove the paper support.
4. Insert a small flat screwdriver under each end of the module
and lift up gently. Do not insert the screwdriver too deep, or the
main logic board may be damaged.
Note: Be careful not to bend the pins when you re-install the
module.
Summary of Contents for 4227-100
Page 10: ...x 4227 100 Korean Safety Information...
Page 101: ...Connector Locations 5 1 4227 100 5 Connector Locations...
Page 105: ...Connector Locations 5 5 4227 100 Component Location Illustrations...
Page 106: ...5 6 4227 100 Component Location Illustrations Continued...
Page 114: ...5 14 4227 100 Connector Block Diagram...
Page 119: ...Parts Catalog 7 2 Assembly 1 Covers and Operator Panel...
Page 121: ...Parts Catalog 7 4 Assembly 2 Paper Feed...
Page 123: ...Parts Catalog 7 6 Assembly 3 Carrier...
Page 125: ...Parts Catalog 7 8 Assembly 4 Base and Electronics...
Page 127: ...Parts Catalog 7 10 Assembly 5 ASF Side Frame Covers...
Page 129: ...Parts Catalog 7 12 Assembly 6 ASF Roller Support...
Page 131: ...Parts Catalog 7 14 Assembly 7 Tractor 2 Option...