Panasonic KX-FLB852CX Service Manual page 111

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.235).
• • • • 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.
Call Service 2 ----- Laser isn´t output.......... Refer to LSU (Laser Scanning Unit) SECTION (P.235)
• • • • 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.256)
• • • • *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 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 6 steps or more within 10 sec soon after the heater was turned ON.
(thermistor's open detection)
02: means that it did not reach the first stabilizing temperature (170°C: 5Bh) within 50 seconds.
03: means that it did not reach the second stabilizing temperature (205°C: 3Ch) within 70 seconds after reaching the first
stabilizing temperature (170°C: 5Bh).
04: means that it dropped to 165°C: 61h (-40 deg) or below by the temperature control after reaching the second stabilizing
temperature (205°C: 3Ch).
05: means that it did not reach the first stabilizing temperature (170°C: 5Bh) within 30 seconds from detection temperature
1 (70°C: D8h).
06: means that it became 235°C: 2Ah 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) and open (AD: FFh or over) were detected.
<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.
Call Service 4 ----- Rotation of Fan.......... Refer to FAN MOTOR SECTION (P.231)
• • • • Connector isn't inserted firmly, dust is caught in and the fan is broken.
• • • • Rotation of the Fan can be confirmed by following Test Mode.
Service mode *677
:1... Normal operation (default)
:2... Rear Fan ON (High speed)
:3... Rear Fan ON (Low speed)
:4... Front Fan ON (High speed)
:5... Front Fan ON (Low speed)
Call service 5 ----- Rotation of Main DC motor.......... Refer to MOTOR DRIVE SECTION (P.218)
• • • • DC motor's rotation detection signal LD did not become Low within rated speed ±6.25%.
• • • • Service mode *556: the operation of Main Motor can be checked by pressing 0 and SET buttons.
Call service 6 ----- Detection of Charger error.......... Refer to the HVPS (High Voltage Power Supply) SECTION (P.254)
• • • • Breaking of charger's wire of developing machine and/or loose connection of High voltage terminals (CHRG, GRID).
• • • • First, replace the Drum unit even so, it doesn't function check the high voltage power supply.
* As for Call Service 1, 2, 4, 5 and 6, turn the power OFF then ON to restart.
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KX-FLB852CX / KX-FLB852CXS