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?
Содержание UF-4500
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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 ...
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