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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' ?
Содержание UF-4500
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