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-4500
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 ...