Epson TM-L90 Developer's Manual page 83
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Also See for TM-L90:
- Technical reference manual (212 pages) ,
- Service manual (148 pages) ,
- User manual (112 pages)
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Q: Print data dropout occurs.
A: Check the handshake process.
Data dropout can occur when the handshake between the host computer and the printer is not
performed correctly. This can result in errors related to print buffer capacity.
Confirmation procedure
Use the following steps to check the handshake process.
1. Select a comparatively large volume of data for printing and send it to the printer.
2. Enabled the on-line state by opening the printer cover while the printer is printing.
3. Check the data send operation.
•
If data send terminates: Handshake process is normal
•
If data send continues: Handshake process is abnormal
4. In cases where the handshake process is found to be abnormal, follow the steps listed in
Corrective Procedure shown below and re-enter host unit and printer settings so that they
match.
Corrective procedure
1. Confirm the serial communication cable.
Confirm the specification of cable connection. Refer to " Connection Form and Cables" on
page 2-2.
2. Confirm serial communication condition.
Confirm serial communication condition of printer and host.
serial communication conditions
•
Baud rate
•
Parity
•
Flow control
•
Data length
Confirmation and setting of printer are as follows.
1. Confirm serial communication condition of the printer by self-test (see page 3-11).
2. Confirm the DIP SW 1-2.
Printer serial communication condition can be set by DIP SW and memory switch. When
power on the printer, DIP SW 1-2 select DIP SW setting or memory switch setting as initial
communication condition. Selected setting is printed by self-test.
DIP SW1-2 OFF: Used communication condition set by memory switch.
4-16 Application Development Information
ON: Used communication condition set by DIP SW.
Rev. A
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