Fault diagnosing and identification system for reproduction mach

Details Fault diagnosing and identification system for reproduction mach Fault diagnosing and identification system for reproduction mach

1990-01-26

1991-05-21

Smith, Jerry

Excavating

371 291, G06F 1100

Patent

active

050181432

ABSTRACT:
A fault diagnosing and identification system for reproduction machines in which LEDs are provided on the core PWBs, individual LEDs being activated in predetermined on/off sequences to identify both a faulty PWB and the specific fault itself.

REFERENCES:
patent: 3964018 (1976-06-01), Strait
patent: 4135662 (1979-01-01), Dlugos
patent: 4475196 (1984-10-01), La Zor
M. R. Wojtaszek, "Testing Digital Counting", IBM TDB, vol. 17, No. 5, 10/1974, p. 1439.
E. L. Allen et al., "Error Indicator for CRT Display", IBM TDB, vol. 10, No. 1, 6/1967, p. 16.

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