Panasonic KX-MB1520FX7 Service Manual page 130

KX-MB1520FX7/KX-MB1520FX8/KX-MB1520FXW/KX-MB1530FX7/KX-MB1530FXW
12.3.6.3. 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 300-D19.
* When Call Service 3 is occurred, the cause can be distinguished by service mode
• *Service mode *655 tells the detection number and 3 latest temperatures of the thermistor. The detection point of the Call Ser-
vice 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 detection points and BB, DD and FF show their temperature detection points.
00: CALL SERVICE 3 was not occurred.
01: means that the value of AD did not increased by 4 steps or more within 10 sec soon after the heater was turned ON. (ther-
mistor's open detection)
02: means that it did not reach the first stabilizing temperature (170C: 3Dh) within 50 seconds.
03: means that it did not reach the second stabilizing temperature (205C: 20h)* within 75 seconds after reaching the first stabi-
lizing temperature (170C: 3Dh).
04: means that it dropped to -40 deg or below by the temperature control after reaching the second stabilizing temperature
(205C: 20h)*.
05: means that it did not reach the first stabilizing temperature (170C: 3Dh) within 35 seconds from detection temperature 1
(70C: DAh).
06: means that it became 235C: 13h or over during printing.
07: means that during printing the short of the thermistor (AD: 00h) was detected.
08: means that the thermistor's short (AD: 00h) were detected.
09: means that it became 235C: 13h or over during sleep condition (heater OFF).
*: depend on its printing conditions (room temperature, number of printing, printing paper size etc.).
Note:
Refer to Heat Lamp Control Circuit (P.67) for technical description.
655.
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