Specifications

Appendix B
The LQ-570+/1070+
Differences between the LQ-570+/1070+ and the LQ-570/1070 . . B-1
Important Component Differences
.................
B-1
Faster Print Speeds. .........................
B-1
Faster Bit Image Print Speeds
....................
B-2
Faster Paper Feed Speeds.
.....................
B-2
Lower Noise.
..............................
B-2
Additional Scalable Fonts .......................
B-2
Character Table Differences
..................... B-3
Jumper Differences ..........................
B-4
Printer Weight Differences
...................... B-4
Printer Height Differences
...................... B-4
Weight Difference for Cut Sheet Carbonless
Duplicating Paper.
........................ B-4
Cl07 MAIN Board Component Layout.
................
B-5
LQ-570+/1070+ Control Circuit Operation.
..............
B-6
Reset Circuit.
..............................
B-9
Sensor Circuits.
............................
B-11
CR Motor Drive Circuit. .......................
B-12
PF Motor Drive Circuit.
.......................
B-13
Printhead Drive Circuit.
.......................
B-14
Disassembly Procedures Unique to the LQ-570+/1070+
......
B-15
Removing the Cl07 MAIN Board Assembly.
.......... B-15
Removing the C062 PSB Power Supply Board Assembly.
..
B-17
Removing the C062 PNL Board.
..................
B-18
Adjustments.
................................
B-19
Circuit Adjustment. ..........................
B-19
Troubleshooting. ..............................
B-20
Error Codes. .......................
B-21
Reference Materials ...................................
B-23
Figures
Figure B-1. C107 MAIN Board Component Layout.
........ B-5
Figure B-2. Control Circuit Block Diagram
..............
B-6
Figure B-3. Data Flow.
..........................
B-7
Figure B-4. Reset Circuit Block Diagram
...............
B-9
Figure B-5. Timing of Reset Signal
...................
B-10
Figure B-6. Sensor Circuit Block Diagram
..............
B-11
Figure B-7. CR Motor Drive Circuit.
.................
B-12
Figure B-8. PF Motor Drive Circuit.
.................
B-13
Figure B-9. Printhead Drive Circuit
..................
B-14
Figure B-10. Removing the Main Board Shield Plate
........
B-15
Figure B-11. Main Board Assembly.
.................
B-16
Figure B-12. Removing the Power Supply Board Assembly
....
B-17
Figure B-13. Removing the Panel Board Assembly
.........
B-18
Figure B-14. Printhead Connector Wire Assignments
.......
B-22
Figure B-15. LQ-570+/1070+ Connection Diagram
.........
B-23
Figure B-16. Cl07 MAIN Board Component Layout
........
B-29
Figure B-17. C107 MAIN Board Circuit Diagram
..........
B-31
Epson LQ-570+/1070+
B-i