131
UF-5500 / 4500
11.2.3.2. INFO CODE=054
"INFO CODE=054" means that the synchronous signal out of the LSU cannot be detected.
The synchronous signal out of the LSU is detected by IC 300-G23pin (NHSYNC).
Note:
As for the "Pulse" waveform of the above flow chart, see the timing chart.
After the LCD indicates "INFO CODE=054 ", turn the power OFF/ON, then confirm
the waveform when the unit starts initial operation.
Replace IC300.
Is CN500-3pin 'L' ?
Is CN500-1pin
5V ?
INFO CODE=054
Yes
Yes
No
Yes
Check +5VD to
CN500-1 pin.
Check R501.
No
NG
Replace R501
Is the pulse
input into CN500-6,
and 4pins?
Yes
Replace the LSU.
Yes
No
Check R518.
If there is no problem, replace IC300.
No
Check R502, R511, L500 and C506.
If there is no problem, replace IC300.
Does CN500-5pin
turn 'L' ?
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 ...
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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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