195
UF-5500 / 4500
MAC through the MII. TXD[3..0] has no effect when TXEN is de-asserted.
• RMII Tx Mode: The TXD[1:0] bits are synchronous with REF_CLK. For each clock period in which TX_EN is asserted, two bits of
data are received by the PHY from the MAC.
11.2.20. Main Board Section
3.3V / 1.2V Troubleshooting Guide (1)
OK
OK
NG
NG
Is the input voltage
24V pin8 of CN504 on the
MAIN Board correct?
Are the resistance
value of 24V more
than50
ǡ
?
Check C807, C808, C501, C503,
C505, C524, C525, IC502, IC700,
Q509, Q523 on the main board and
replace the parts having the problem.
OK
Is the problem
still occurred?
Check PSU and Harness between
CN504 and PSU and replace the
parts having the problem.
Replace the
MAIN Board.
END
NG
OK
OK
OK
Is the problem
still occurred?
Replace the
MAIN Board.
Replace IC800 on
the MAIN Board.
END
END
3.3V / 1.2V Troubleshooting(2)
NG
OK
(1.2V NG)
(3.3V NG)
(1.2V & 3.3V NG)
OK
NG
NG
NG
Is the 3.3V output
voltage correct?
Is the problem
still occurred?
Is the 1.2V output
voltage correct?
3.3 V / 1.2 V Troubleshooting(1)
Содержание UF-4500
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Страница 248: ...248 UF 5500 4500 13 5 Test Chart 13 5 1 ITU T No 1 Test Chart ...
Страница 249: ...249 UF 5500 4500 13 5 2 ITU T No 2 Test Chart ...
Страница 281: ...281 UF 5500 4500 10 10 11 15 12 17 18 19 20 21 22 23 24 28 29 30 27 25 26 21 13 14 16 30 ...
Страница 287: ...287 UF 5500 4500 130 131 132 133 134 135 136 137 138 139 140 141 PCB2 A UF 5500 only CN1 ...
Страница 289: ...289 UF 5500 4500 PCB8 PCB4 160 161 163 162 164 167 168 171 177 178 172 173 174 173 176 169 170 162 164 A A 165 ...
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Страница 309: ...309 UF 5500 4500 A1 A3 A4 A6 A7 A8 A9 A10 P1 P2 P3 P4 P5 P6 P7 P8 P7 Drum Cartridge Toner Cartridge P9 A11 ...
Страница 311: ...311 UF 5500 4500 501 502 503 504 506 507 505 508 509 511 510 514 513 512 P51 P53 P54 A51 P52 ...
Страница 362: ...362 UF 5500 4500 ...
Страница 365: ...365 UF 5500 4500 Published in Japan ...