Panasonic UF-5500, Service Manual

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130
UF-5500 / 4500
11.2.3. Safety Error Information Troubleshooting Guide
INFO CODE=054 ----- Polygon doesn’t rotate......... Refer to LSU (Laser Scanning Unit) Section (P.51).
• First, listen to the sound. If rotation sound isn't heard, check 24V line, POLON signal and POLCLK signal. If even a little of sound
is heard, check XREADY signal.
INFO CODE=054 ----- Laser isn't output.......... Refer to LSU (Laser Scanning Unit) Section (P.51)
• This can be judged only by referring to signal. Check 5V line, XHSYNC, XAPC, XVIDEO, XLDON.
INFO CODE=021 ----- Detection of fixing temperature.......... Refer to Heat Lamp Control Circuit (P.66)
• You can get error details by check and call function.
INFO CODE=021 ----- Rotation of Fan.......... Refer to FAN Motor Section (P.47)
• Connector isn’t inserted firmly, dust is caught in and the fan is broken.
INFO CODE=051 ----- Rotation of Engine motor.......... Refer to Motor Drive Section (P.39)
• Engine motor’s rotation detection signal LD did not become Low within rated speed ±6.25%.
INFO CODE=090 ----- Detection of Charger error.......... Refer to the HVPS (High Voltage Power Supply) Section (P.64)
• Breaking of charger’s wire of drum cartridge and/or loose connection of High voltage terminals (CHRG, GRID).
• First, replace the drum cartridge even so, it doesn’t function check the high voltage power supply.
11.2.3.1. INFO CODE=054
"INFO CODE=054" means that the polygon motor inside the LSU does not rotate or synchronous signal out of the LSU cannot
be detected.
The rotation of the polygon motor is detected by IC300-F23pin (NREADY).
After the LCD indicates "INFO CODE=054 ", turn the power OFF/ON.
Then, when the unit starts initial operation, confirm that the rotating sound of the polygon
motor is heard before the engine motor starts to run.
Replace
the LSU.
Is CN501-2pin 'L' ?
Is the clock
input into CN501-1pin?
Is CN501-3pin 'L'?
INFO CODE=054
No
Yes Yes
No
Check Q503, Q505.
Yes
No
Replace IC300.
No
Yes
Replace the IC300.
Is the sound
of the polygon
motor heard?
Is the clock
output out to Q503-
Base pin? Is Q505-
Base pin 'H'?