JPS5578259A - Failure diagnosis method for unit of which operation is controlled with microcomputer - Google Patents

Failure diagnosis method for unit of which operation is controlled with microcomputer

Info

Publication number
JPS5578259A
JPS5578259A JP15295678A JP15295678A JPS5578259A JP S5578259 A JPS5578259 A JP S5578259A JP 15295678 A JP15295678 A JP 15295678A JP 15295678 A JP15295678 A JP 15295678A JP S5578259 A JPS5578259 A JP S5578259A
Authority
JP
Japan
Prior art keywords
rom
failure diagnosis
unit
pins
microcomputer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15295678A
Other languages
Japanese (ja)
Inventor
Masaaki Ogura
Mitsuhiro Nonaka
Nachio Seko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP15295678A priority Critical patent/JPS5578259A/en
Publication of JPS5578259A publication Critical patent/JPS5578259A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To enable to diagnose the various operations of unit and operation of MC, by operating failure diagnosis ROM in place of ROM in the microcomputer MC for operation control of unit such as copy machines.
CONSTITUTION: As the failure diagnosis ROM' in which failure diagnosis program is stored, that given by the first potential to the pin corresponding to the chip selection pin predetermined for ROM provided in the microcomputer MC is prepared. If the pins other than the chip selection pins predetermined in ROM are connected to the pins other than the chip selection pins predetermined in ROM', the second potential required for disabling ROM to the pins of ROM of MC is automatically given to make operative the ROM' for failure diagnosis and the failures of unit can be diagnosed.
COPYRIGHT: (C)1980,JPO&Japio
JP15295678A 1978-12-10 1978-12-10 Failure diagnosis method for unit of which operation is controlled with microcomputer Pending JPS5578259A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15295678A JPS5578259A (en) 1978-12-10 1978-12-10 Failure diagnosis method for unit of which operation is controlled with microcomputer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15295678A JPS5578259A (en) 1978-12-10 1978-12-10 Failure diagnosis method for unit of which operation is controlled with microcomputer

Publications (1)

Publication Number Publication Date
JPS5578259A true JPS5578259A (en) 1980-06-12

Family

ID=15551829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15295678A Pending JPS5578259A (en) 1978-12-10 1978-12-10 Failure diagnosis method for unit of which operation is controlled with microcomputer

Country Status (1)

Country Link
JP (1) JPS5578259A (en)

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MANN Optimal outlier tests for a Weibull model- to identify process changes or to predict failure times[Technical Paper, 1 Jul. 1980- 1 Jun. 1981]