8170 N/B MAINTENANCE
8.11PIO Port Test ErrorWhen a print command is issued, printer prints nothing or garbage.+5VS
P18
U509
Supper I/O
PC87393
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| U501 P3 | D501 |
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| PAC128401Q |
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| P22 J6 | PJ2 P2 |
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| BAS32L |
| J1 |
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| 12 | 13 |
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Mother Board |
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| 25 | RP1 | 8 | 1 | 11 | 14 | STB# | 1 | P3 | |||
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| 23 |
| 7 | 2 | 10 | 15 | AFD# | 14 |
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| 43 | P_LPD0 |
| 6 | 3 | P_LPD0 | 9 | 16 | LPD0 | 2 |
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| RP500 |
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| 21 |
| 5 | 4 | 8 | 17 | ERR# | 15 |
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P_LPD [0:3] | 0*4 |
| DP_LPD [0:3] |
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| P_LPD1 | RP2 | 8 | 1 | PP_LPD1 | 7 | 18 | LPD1 | 3 |
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| RP502 |
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| 19 |
| 7 | 2 | 6 | 19 | INIT# | 16 |
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| P_LPD2 |
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| PP_LPD2 |
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P_LPD [4:7] | 0*4 |
| DP_LPD [4:7] | 39 |
| 6 | 3 | 5 | 20 | LPD2 | 4 |
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| 17 |
| 5 | 4 | 4 | 21 | SLIN# | 17 |
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P_SLCT, | RP503 |
| DP_SLCT, | 37 | P_LPD3 | R1 0 |
| PP_LPD3 | 3 | 22 | LPD3 | 5 |
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| 2 | 23 |
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0*4 |
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| 1 | 24 |
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| D/D Board |
| U502 P3 |
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RP504 |
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0*4 |
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| RP3 |
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| PAC128401Q | GND_IO2 |
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| 12 | 13 |
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| 120OHM/100MHZ |
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| R500 |
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| 35 | P_LPD4 |
| 8 | 1 | PP_LPD4 | 11 | 14 | LPD4 | 6 |
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P_PE | 0 |
| DP_PE |
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| PP_LPD5 |
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| LPD5 |
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| 33 | P_LPD5 |
| 7 | 2 | 10 | 15 | 7 |
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| 31 | P_LPD6 |
| 6 | 3 | PP_LPD6 | 9 | 16 | LPD6 | 8 |
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| CP502 |
| C504 | 29 | P_LPD7 |
| 5 | 4 | PP_LPD7 | 8 | 17 | LPD7 | 9 |
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| 100P*4 |
| 22P | 36 |
| 8 | 1 | 7 | 18 | ACK# | 10 |
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| 34 | P_BUSY |
| 7 | 2 | PP_BUSY | 6 | 19 | BUSY | 11 |
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| CP503 | CP504 | CP505 | 32 | P_PE |
| 6 | 3 | PP_PE | 5 | 20 | PE | 12 |
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| P_SLCT |
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| PP_SLCT |
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| SLCT |
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| 100P*4 | 100P*4 | 100P*4 | 27 |
| 5 | 4 | 4 | 21 | 13 |
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| RP4 |
| X3 | 22X |
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| 120OHM/100MHZ |
| 2 | 23 |
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| 1 | 24 |
| Parallel Port | |
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| Connector |
GND_IO2GND_IO2
167