Call Service Troubleshooting Guide - Panasonic KX-MB2085CXW Service Manual

KX-MB2085CXW/KX-MB2090CXW

12.3.6. 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.44).
• 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.44)
• This can be judged only by referring to signal. Check 5V line, XHSYNC, XAPC, XVIDEO, XLDON.
Call Service 3 ----- Detection of fixing temperature.......... Refer to Heat Lamp Control Circuit (P.59)
• *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: 77h) within 50 seconds.
03: means that it did not reach the second stabilizing temperature (200°C: 4Fh)* within 75 seconds after reaching the first stabi-
lizing temperature (170°C: 77h).
04: means that it dropped to -40 deg or below by the temperature control after reaching the second stabilizing temperature
(200°C: 4Fh)*.
05: means that it did not reach the first stabilizing temperature (170°C: 77h) within 35 seconds from detection temperature 1
(70°C: F1h).
06: means that it became 235°C: 2Fh 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: 2Fh or over during sleep condition (heater OFF).
*: depend on its printing conditions (room temperature, number of printing, printing paper size etc.).
<Note>
Once "CALL SERVICE3" is displayed, it does not disappear until the Factory Setup or Service Function #529 is
Therefore Service Function #529 should not be executed before the confirmation, and #529 should be done after the countermea-
sure.
Call Service 4 ----- Rotation of Fan.......... Refer to FAN Motor Section (P.40)
• 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... Right Fan & Left Fan ON (High speed)
:3... Right Fan & Left Fan ON (Low speed)
:4... Both Fan OFF
Call service 5 ----- Rotation of Engine motor.......... Refer to Motor Drive Section (P.33)
• Engine 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 H.V.P.S. (High Voltage Power Supply) Section (P.57)
• 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.
* As for Call Service 1, 2, 4, 5 and 6, turn the power OFF then ON to restart.
100
executed.