8170 N/B MAINTENANCE
8.11PIO Port Test Error
When a print command is issued, printer prints nothing or garbage.
PIO Test Error
1.Check if PIO device is installed properly. (J1)
2.Check CMOS LPT port setting properly.
Replace
Troubleshooting
One of the following parts or signals on the motherboard may be defective, use an oscilloscope to check the signals or replace the parts one at a time and test after each replacement.
Test | Yes |
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OK? |
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Correct it
Motherboard
PARTS:
SIGNALS:
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| No |
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| Yes |
Try another known good |
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PIO device. |
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| No |
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Re - Test | Yes | |||
OK? |
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| ||
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| No |
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Replace the faulty parts.
End
U509 | RP500 |
R500 | C504 |
J6 | PJ2 |
RP1 | RP2 |
R1 | RP3 |
RP4 | U501 |
U502 | J1 |
RP[502:504] |
|
CP[503:505] |
|
P_SLCT, | SLIN# | |
LPD3 | ||
LPD2 | ||
LPD4 | ||
P_LPD [0:7] | ||
LPD5 | ||
LPD6 | ||
LPD7 | ||
ACK# | ||
P_BUSY | ||
BUSY | ||
P_PE | ||
PE | ||
AFD# | ||
SLCT | ||
LPD0 | ||
| ||
ERR# |
| |
LPD1 |
| |
INIT# |
|
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