181
UF-5500 / 4500
11.2.17. High Voltage Section
1. Main
TRA (-) BIAS
Check the HVPS unit failure.
Check the voltage of
pin8 of HVPS unit.
Is +24V power
output?
Check the Main Board.
Check the SW1.
NO
YES
All of the outputs
are abnormal.
CHG BIAS ,
GRID
DEV BIAS
Replace the unit.
NO
Is it normal?
Replace the SW1.
Check the value of
the resistor F1.
YES
NO
Is the value of
the resistor 0
?
Replace the F1.
Make sure each output.
If any trouble is found, refer to
the manual for each part.
YES
TRA (+) BIAS
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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