175
UF-5500 / 4500
11.2.13.2. ADF Motor
Is Pin 22 of IC700
more than 0.4V ?
Are excitation voltage output
from Pin 4,6,7 and 9 of IC700 ?
Replace ADF MOTOR
Check winding resistance of
ADF MOTOR, Approx. 15
Ω
?
ADF MOTOR
No
Yes
Are the resistance between 24V
and Pin 4,6,7,and 9 of IC700
more than 1K
Ω
?
Replace IC700
No
Yes
Yes
Replace ADF MOTOR
No
Is voltage R711
(IC300 side) "H"?
Repair
Are phase signals input to Pin
1,12,13,14,23 and 24 of IC700 ?
No
Yes
No
Yes
Is pin 20 of IC700 "H"?
Yes
No
Check soldering of
Q521. OK?
Is Drain voltage of
Q521 0.6V or pulse ?
No
Is Gate voltage of Q521
0V or pulse ?
No
No
Replace IC300
No
Yes
Yes
Yes
Check soldering of
R711, R701, R702 and
Q700, OK ?
Yes
Yes
Replace Q521
Replace IC300
Replace IC300
Replace IC700
Repair
No
Check soldering of R533,
R534, R540 and C509.
Check soldering of
R538 and R539. OK?
Replace R711, R701,
R702 or Q700.
Yes
Repair
No
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...
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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...
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