LQ-670 Service Manual
Rev. A
3-2
3.1.3 Service Check After Repair
After completing repair of the product, use the check list shown below, to verify status of
repaired product and all the repair work performed before returning the product to the users.
This list can be used as a record of all service work performed with the product.
Table 3-2. Repair Status Check List
Category
Component
Item to Check
Status
Printer
Mechanism
Printhead
Are all wires print properly?
Checked, OK
Not necessary
Carriage
Mechanism
Does the carriage move smoothly?
z
Noisy?
z
Any dirt or excessive oil?
Checked, OK
Not necessary
Is the Carriage motor at the normal
temperature? (Not too hot?)
Checked, OK
Not necessary
Paper Feed
Mechanism
Is paper advance smoothly?
z
Noisy?
z
Paper is jamming?
Checked, OK
Not necessary
Is the paper-feed motor at the normal
temperature? (Not too hot?)
Checked, OK
Not necessary
Paper Path
Are all types of paper advance
smoothly?
Checked, OK
Not necessary
Is the tractor feeding paper smoothly?
Checked, OK
Not necessary
Are all paper paths clear of an
obstructions?
Checked, OK
Not necessary
Is the platen free of damage?
Checked, OK
Not necessary
Ribbon Mask
Is the ribbon mask free of damage?
Checked, OK
Not necessary
Operation
Self-Test
Was the self-test printing successful?
Checked, OK
Not necessary
On-line Test
Was the on-line printing successful?
Checked, OK
Not necessary
Adjustment
Platen-Gap
Is the gap adjusted correctly?
(PG =
Checked, OK
Not necessary
Bi-D
Alignment
Is the bi-directional alignment made
properly?
Checked, OK
Not necessary
ROM
Version
Latest version = ( )
Checked, OK
Not necessary
Packing
Ribbon
Cartridge
Has the ribbon cartridge been removed
from the printer?
Checked, OK
Not necessary
Attachments
Have all relevant attachments been
packed together with the printer?
Checked, OK
Not necessary
Summary of Contents for LQ 670 - B/W Dot-matrix Printer
Page 1: ...EPSON IMPACT DOT MATRIX PRINTER EPSON LQ 670 SERVICE MANUAL SEIKO EPSON CORPORATION 4007875 ...
Page 5: ...v REVISION SHEET Revision Issued Data Contents Rev A May 28 1997 First issue ...
Page 114: ...Chapter 6 Maintenance 6 1 Preventive Maintenance 6 1 ...
Page 116: ...LQ 670 Service Manual Rev A 6 2 Figure 6 1 Lubrication Points ...
Page 122: ...LQ 670 Service Manual Rev A A 5 A 2 Circuit Diagram Figure A 2 C214Main Board Circuit Diagram ...
Page 123: ...Appendix Rev A A 6 Heat Sink Q1 D51 Figure A 3 C214PSB Board Circuit Diagram ...
Page 124: ...LQ 670 Service Manual Rev A A 7 Heat Sink Q1 D51 Figure A 4 C214PSE Board Circuit Diagram ...
Page 125: ...Appendix Rev A A 8 A 3 Component Layout Figure A 5 C214 Main Board Component Layout ...
Page 127: ...Appendix Rev A A 10 A 4 Exploded Diagram Figure A 8 Exploded Diagram ...
Page 128: ...LQ 670 Service Manual Rev A A 11 Figure A 9 Exploded Diagram ...
Page 129: ...Appendix Rev A A 12 Figure A 10 Exploded Diagram ...
Page 135: ...EPSON SEIKO EPSON CORPORATION ...