APPENDIX 4 SYSTEM MODE |
A4.8 Additional Information
A4.8.1 Self-Diagnostic Test Result Sample and Descriptions (Cont.)
Print Head Resistance Rank Table
Rank | Average resistance (ohm) | Rank | Average resistance (ohm) |
0 | 1409 to 1454 | 4 | 1219 to 1265 |
1 | 1361 to 1408 | 5 | 1171 to 1218 |
2 | 1314 to 1360 | 6 | 1124 to 1170 |
3 | 1266 to 1313 | 7 | 1076 to 1123 |
(8) | DIP Switch Status |
|
| DIP SW | 1: ON 2: OFF 3: OFF |
(9) | Expansion I/O Interface Check |
|
| EXP.I/O | OK |
Loopback test
OK: The circuit has no problem.
NG: The circuit has a problem or loopback jig is not attached.
Expansion I/O PC board
300Ω×5
∙ | ∙ | ∙ | ∙ | ∙ |
1 | 2 | 3 | 4 | 5 |
| 12 |
|
| 15 |
| ∙ |
|
| ∙ |
∙ | ∙ | ∙ ∙ | ∙ | Connector: |
7 8 | 9 | 10 11 |
| |
|
| 21 ∙ |
|
|
GND
300Ω Vcc
(10) DIN Connector for the Keyboard
KEY BRD OK
OK: The connector has no problem.
NG: The connector has a problem or loopback jig is not attached.
DIN Connector for the
3
1
4 2
5
6
7
8
DIN Connector: