User's Manual

Troubleshooting and Diagnostics
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Chapter
7
129
6820 Series 80-Column Printer User’s Manual
Accessing Diagnostic Information
The amount of Flash memory reserved for nonvolatile diagnostic memory
is 2K bytes. Printer self-test prints most of the information contained in
the D iagnostic Memory for remote and end-user diagnostic access.
Diagnostic Information
Field
ID
Length Description Stored as
Total
Length
01 4 Serial # 7 digit BCD set at MFG 39 bytes
3 Date of Manufacture. yy/mm/dd 6 digit BCD set at MFG
7
7
7
7
Hardware Configuration:
ddd-ddd-ddd/dddd (top level part #)
ddd-ddd-ddd/dddd (control board)
ddd-ddd-ddd/dddd (power supply)
ddd-ddd-ddd/dddd (i/o board)
52digitBCDsetatMFG
2 CRC of preceding fields. 2 byte binary set at MFG
08 8 Hardware Revisions: ECNs applied. 64 ECNs can record
separately by number 1-64.
8 byte bit field 11 bytes
1 Service Repairs: a two-digit field indication of number of
timesunitisserviced.
2 BCD Digits
3 Date of last Repair. yy/mm/dd 6 B CD digits
09 2 Cold Starts since MFG or last repair. binary digits 8 bytes
2 Warm Starts since last cold start. binary digits
2 Pages printed over life. binary digits
10 2 Last high & low voltage extremes on 24-volt input over last
50 reports. Extremes stored as 8-bit A2D conversions.
2 bytes 11 bytes
2 Voltage extreme history stores max. & min. 24-volt A2D
conversions over printer life.
2 bytes
1 24-volt voltage error. Voltages greater than 10% consid-
ered errors. A2D value recorded.
1 byte
2 Form number at last voltage error. 2 bytes
2 24 -volt error count. 2 bytes
20 2 Last high and low voltage extremes on 12-volt input over
last 50 reports. Extremes stored as 8-bit A2D conversions.
2 bytes 11 bytes
2 Voltage extreme history stores min. & max. 12-volt A2D
conversions over printer life.
2 bytes
1 12V voltage error. Voltages less than 10.5 volts and greater
than 14.5 volts considered errors. A2D value is recorded.
1 byte
2 Page number at last 12-volt error. 2 bytes
2 12-volt error count. 2 bytes