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Service Guide PM3410
Chapter 2 Principles of Operation
2.1.04 Interface Control
The printer is capable of serial or parallel operation. The desired interface method is selected by sliding
the interface cover to expose the desired connector. When this is done, the interface select switch is
turned ON or OFF to inform the Interface/Motor Control LSI (Q5: B562 13497) of the selected interface.
Parallel Interface
When the interface select switch is turned OFF, the parallel interface is selected and Q5 is in the parallel
interface mode.
The data from the interface is received through connector (CN-1) and Q5 latches this data in sync with the
STB signal.
The BUSY signal is turned ON as the data is processed. When processing is completed, the BUSY signal
is turned OFF and an ACK signal is sent to the host to request more data.
The BUSY signal is also turned ON when the printer is not able to receive data (the Print Buffer is full, the
printer is deselected or an error condition exists).
Содержание Pacemark 3410
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Страница 215: ...Description Section Printer B 2 01 Upper Cover Assembly B 2 02 Printer Unit B 2 03...
Страница 219: ...Item Okidata P N Oki J P N Description Comments Disassembly Procedure 1 50215701 1PA4049 5837G1 Cover Access RSPL 3 2 01...
Страница 222: ...Item Okidata P N Oki J P N Description Comments Disassembly Procedure 1 56609701 3YS4011 1315P1 Cord AC 120V RSPL 3 2 01...
Страница 243: ...Item Okidata P N Oki J P N Description Comments Disassembly Procedure 1 53532501 N A Foam Spacer N A...
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