User's Manual

Troubleshooting and Diagnostics
Chapter
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7
124
6820 Series 80-Column Printer User’s Manual
(continued)
“Error Log” information appears on lines 38–43. This information is cleared after every self-test. This information is
very helpful in determining problems.
“PE” # of paper jams while feeding paper
“HJ” #ofheadjamswhileprintheadismoving
“12Vu” # 12-volt under voltage
“12Vo” # 12-volt over voltage
“24Vu” # 24-volt under voltage (Head/motor voltage)
“24Vo” # 24-volt over voltage
“Home” # Home detect errors (typically caused by paper scraps or circuit failures)
“Temp” Unused
“OverC” # Head over current errors (typically caused by a bad print head)
“HeadS” # Head driver short errors (typically caused by circuit failures)
“Fault” # Paper feed motor over current errors (Excess current in paper feed motor could indicate circuit failure)
“ADErr” # A2D conversion failures
“EEErr” # EEPROM write failures to diagnostic block
“Dlink” # Software memory errors (Corruption in internal memory)
“Llink” # Software memory errors
All other values are informational only. Remember that these values are
cleared after the self-test.
Sample First Page of Self-Test
Note: Lines 15–18 are factory-default printer settings. Take note of these
lines when reading the self-test report.
yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy
1 NP6820
2 Copyright 1997, 1998, Intermec Technologies Corporation. All Rights
Reserved.
3 Serial# MFG Date Hardware Check Repairs Svc Date
4 12345678 yy/mm/dd ddd-ddd-ddd/dddd (TOP) GO/NG 00 yy/mm/dd
5 ddd-ddd-ddd/dddd (MLB)
6 ddd-ddd-ddd/dddd (PS)
7 ddd-ddd-ddd/dddd (IOB)
8 Revisions:..........0000000000303100
9 Bootblock: NPBB6820.MOD - Version XX.XX XXXX XXXX GO/NG
10 Control Program: npfl6820.mod - Version XX.XX XXXX XXXX GO/NG
11 Font Module: nftxxxxx.mod - Version XX.XX XXXX XXXX GO/NG
12 Font Module: nftxxxxx.mod - Version XX.XX XXXX XXXX GO/NG
13 Battery Voltage: 012.34 Low...../....High
14 Total Pages: 123456
15 Zero Font Style: 
16 Auto Feed: CR
17 Interface mode: NPCP
18 Bit Rate: 19200
19 Cold Starts: 00024
20 Warm Starts: 00050