JPS57114982A - Electronic device - Google Patents

Electronic device

Info

Publication number
JPS57114982A
JPS57114982A JP56000850A JP85081A JPS57114982A JP S57114982 A JPS57114982 A JP S57114982A JP 56000850 A JP56000850 A JP 56000850A JP 85081 A JP85081 A JP 85081A JP S57114982 A JPS57114982 A JP S57114982A
Authority
JP
Japan
Prior art keywords
error
cpu11
ram13
result
check
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
JP56000850A
Other languages
Japanese (ja)
Inventor
Shigemi Kawamura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP56000850A priority Critical patent/JPS57114982A/en
Publication of JPS57114982A publication Critical patent/JPS57114982A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
    • G06F11/26—Functional testing
    • G06F11/273—Tester hardware, i.e. output processing circuits
    • G06F11/277—Tester hardware, i.e. output processing circuits with comparison between actual response and known fault-free response

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To enable repair of failed part easily, by checking various function devices according to check programs at the application of power supply and disolaying a defective function device according to the result of check, in a printer making print according to the printed data from an electronic computer. CONSTITUTION:A check program of a ROM12 is applied to a CPU11 through the application of power supply. The CPU11 writes in data to all the storage area of a RAM13 at first and checks after the readout of written data if they are identical. If an error takes place as the result, the CPU11 displays a code corresponding to the error of the RAM13 on a display 18. If the RAM13 has an error, for exmple, the CPU11 checks an I/O port 14, and as the result, if there is an error, the code of the port 14 to the error is displayed 13. Thus, failures can be found out without special tools for easy repair.
JP56000850A 1981-01-07 1981-01-07 Electronic device Pending JPS57114982A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56000850A JPS57114982A (en) 1981-01-07 1981-01-07 Electronic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56000850A JPS57114982A (en) 1981-01-07 1981-01-07 Electronic device

Publications (1)

Publication Number Publication Date
JPS57114982A true JPS57114982A (en) 1982-07-17

Family

ID=11485113

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56000850A Pending JPS57114982A (en) 1981-01-07 1981-01-07 Electronic device

Country Status (1)

Country Link
JP (1) JPS57114982A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190881A (en) * 1983-04-14 1984-10-29 Tokyo Electric Co Ltd Printer
JPS60103667A (en) * 1983-11-10 1985-06-07 Fujitsu Ltd Image pickup device
JPS60205467A (en) * 1984-03-30 1985-10-17 Canon Inc Recording device
JPS60229040A (en) * 1984-04-27 1985-11-14 Canon Inc Recording device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190881A (en) * 1983-04-14 1984-10-29 Tokyo Electric Co Ltd Printer
JPS60103667A (en) * 1983-11-10 1985-06-07 Fujitsu Ltd Image pickup device
JPS60205467A (en) * 1984-03-30 1985-10-17 Canon Inc Recording device
JPH0585356B2 (en) * 1984-03-30 1993-12-07 Canon Kk
JPS60229040A (en) * 1984-04-27 1985-11-14 Canon Inc Recording device
JPH0586358B2 (en) * 1984-04-27 1993-12-10 Canon Kk

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