Panasonic KX-FLM653RU Service Manual ▷ View online
6.6.6. CALL SERVICE TROUBLESHOOTING GUIDE
Call Service related error is most frequent.
Call Service 1 ----- Polygon doesn’t rotate......... Refer to LSU (Laser Scanning Unit) SECTION (P.189).
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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.
sound is heard, check XREADY signal.
Call Service 2 ----- Laser isn´t output.......... Refer to LSU (Laser Scanning Unit) SECTION (P.189)
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This can be judged only by referring to signal. Check 5V line, XHSYNC, SPC, VIDEO, LDON.
Call Service 3 ----- Detection of fixing temperature.......... Refer to HEAT LAMP CONTROL CIRCUIT (P.204)
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*Service mode *655 tells the detection number and 3 latest temperatures of the thermistor. The detection point of the Call
Service 3 and the thermistor temperature is displayed. Maximum 3 latest temperatures are displayed showing the newest
on the left. [AABB CCDD EEFF] AA, CC and EE show the cause distinction code and BB, DD and FF show their
temperature.
Service 3 and the thermistor temperature is displayed. Maximum 3 latest temperatures are displayed showing the newest
on the left. [AABB CCDD EEFF] AA, CC and EE show the cause distinction code and BB, DD and FF show their
temperature.
Cause distinction code
01: means that it did not reach 56°C within 22 seconds since the heater was turned ON.
03: means that it did not reach the secondary stabilizing temperature (160°C) within 35 seconds from 56°C.
04: means that it became T2-40deg (120°C or below) after T2; the secondary stabilizing temperature (160°C). (The heater has
burnt out.)
burnt out.)
05: means that it became over 220°C.
06: means that during printing the SHORT of the thermistor (AD: 01h or below) was detected.
07: means that the thermistor´s SHORT (AD:00h) and OPEN (AD: F9h or over) were detected.
Call Service 4 ----- Rotation of Fan.......... Refer to FAN MOTOR SECTION (P.186)
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Connector isn’t inserted firmly, dust is caught in and the fan is broken.
* As for Call Services 1, 2 and 4, turn the power OFF then ON to restart.
<Note>
Once “CALL SERVICE3” is displayed, the unit does not disappear until the Factory Setup or Service Function #529 is executed.
Therefore Service Function #529 should be executed before the confirmation, and #529 should be done after the countermeasure.
Therefore Service Function #529 should be executed before the confirmation, and #529 should be done after the countermeasure.
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6.6.6.1. CALL SERVICE 1
"CALL SERVICE 1" means that the polygon motor inside the LSU does not rotate.
The rotation of the polygon motor is detected by IC604-48pin (XREADY).
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6.6.6.2. CALL SERVICE 2
"CALL SERVICE 2" means that the synchronous signal out of the LSU cannot be detected.
The synchronous signal out of the LSU is detected by IC 604-59pin. (XHSYNC)
Note:
As for the "Pulse" waveform of the above flow chart, see the timing chart.
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6.6.6.3. CALL SERVICE 3
"CALL SERVICE 3" means that the temperature of the fuser does not rise up to or exceed a constant temperature.
The temperature is monitored with the thermistor inside the fuser and detected with the voltage input into IC 604-21pin.
*When Call Service 3 is occurred, the cause can be distinguished.
Refer to P.89 for details.
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