177
UF-5500 / 4500
11.2.15. CIS Control Section
Are there any
stain and/or dust on the glass
surface and/or inside the
white sheet?
Clean the stain and/or dust.
NG
Insert document and copy.
OK
Is the voltage of
CN510 pin9 about 7V?
NO
Is LED lighted?
YES
NO
YES
Is the solder at R548 OK?
NO
Check that CN504 pin2 and
the power supply unit is 7V.
YES
NO
YES
Replace the IC300.
NO
YES
Replace the Q514, Q516 and Q517.
YES
Replace the CIS.
NO
Replace the lead or
solder the pin 3 of CN510 again.
Solder them again.
A
Are the solders at
R541,R542,R543,Q514(GREEN),
R544,R546,R549,Q516(RED),
R550,R554,R556,Q517(BLUE)
OK?
YES
NO
Are the signals output to
the Base of Q514 (Q514-R541;GREEN)
the Base of Q516 (Q516-R544;RED)
the Base of Q517 (Q517-R550;BLUE)?
Is the voltage of R543-GND,
R549-GND, R556-GND
0.7 ~0.9V?
Is the lead (9pin~12pin)
connected to pin 3 of CN510
properly? or are the solders
at pin 3 of CN510, OK?
Summary of Contents for UF-5500
Page 180: ...180 UF 5500 4500...
Page 248: ...248 UF 5500 4500 13 5 Test Chart 13 5 1 ITU T No 1 Test Chart...
Page 249: ...249 UF 5500 4500 13 5 2 ITU T No 2 Test Chart...
Page 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...
Page 287: ...287 UF 5500 4500 130 131 132 133 134 135 136 137 138 139 140 141 PCB2 A UF 5500 only CN1...
Page 297: ...297 UF 5500 4500...
Page 305: ...305 UF 5500 4500...
Page 311: ...311 UF 5500 4500 501 502 503 504 506 507 505 508 509 511 510 514 513 512 P51 P53 P54 A51 P52...
Page 362: ...362 UF 5500 4500...