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Service Guide for PM4410
Chapter B RS-232C Serial Interface Board
2.3.1.2 Function
After the settings outlined in Section 3.3.1.1 are completed and power is turned on, the serial interface checks the
message buffer memory and interface driver/receiver circuit. It then prints characters.
To start and stop this test, push the SEL switch on the front of the printer. Details of this test are explained on the next
page.
(1) The program revision using two numerical characters is printed.
(2) "LOOP TEST" is printed.
(3) Memory is checked for the message buffer.
(4) Prints "OK" is printed if the memory check is OK and "BAD" is printed if the memory check fails.
(5) Output level to DTR, RTS, and SSD signals is dropped low. If DSR, CTS, or CD signals is High, "IF BAD" is printed.
If DSR, CTS, and CD signals are all Low, "IF OK" is printed.
(6) Output level to DTR, RTS, and SSD signals is raised high. If DSR, CTS, or CD signals is Low, "IF BAD" is printed. If
DSR, CTS, and CD signals are all High, "IF OK" is printed.
(7) Transmits characters codes from 20H to 7FH is transmitted by SD signal. At the same time, characters are received
by the RD signal and stored in the message buffer.
(8) The characters that were stored in the message buffer as indicated in (7) are printed.
(9) Steps (1) through (8) are repeated until test is interrupted.
Copyright 1998, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner
Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Summary of Contents for Pacemark 4410
Page 44: ...Exchange BPX for any updates to this material http bpx okidata com...
Page 51: ...3 AG detector detail drawing...
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Page 57: ...Rear tractor drive l Front tractor drive l...
Page 60: ...i Close position ii Open position iii Half open position...
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Page 130: ...4 LF Motor Belt Tension 7 Auto Gap Motor Assy 8 Bail Gear Assy Backlash...
Page 131: ...9 Installing printhead...
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Page 136: ...Right Side View...
Page 137: ...Left Side View...
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Page 143: ...Page 67 Service Guide for PM4410 Chapter 5 Maintenance 28 Option Interface...
Page 150: ...Page 71 Service Guide for PM4410 Chapter 6 Maintenance 6 4 Part Layout 1 Board 2 Other...
Page 180: ...Page 99 Service Guide for PM4410 Chapter 6 Maintenance 27 MUPIS Interface Option...