
6-17
6.2 TROUBLESHOOTING
6.2.1 Introduction
This section gives the service personnel some of the troubleshooting procedures to be followed if
an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible
problems which may occur in future and determine the troubleshooting procedures, so this section
covers some sample problems. However, those samples will help service personnel pinpoint and
repair other defective elements if he/she analyzes and examines them well.
6.2.2 Precautions
Be sure to observe the following to prevent the secondary troubles from happening:
(1) Always unplug the AC power cord from the outlet when removing the covers and PCBs,
adjusting the mechanisms, or conducting continuity testing with a circuit tester.
(2) When disconnecting the connectors, do not pull the lead wires but hold the connector
housings.
(3)
Before handling the PCBs, touch a metal portion of the machine to discharge static
electricity charged in your body.
When repairing the PCBs, handle them with extra care.
After repairing the defective section, be sure to check again if the repaired section works correctly.
Also record the troubleshooting procedure so that it would be of use for future trouble occurrence.
6.2.3 Checking prior to Troubleshooting
Prior to proceeding to the troubleshooting procedures given in Subsection 6.2.4, make the
following initial checks:
Environmental conditions
Check that:
(1) The machine is placed on a flat, firm surface.
(2) The machine is used in a clean environment at or near normal room temperature (10
°
C to
32.5
°
C) with normal relative humidity (20 to 80%).
(3) The machine is not subjected to rapid change of the ambient temperature. (Moving the
machine from a cold place to warm place will cause condensation inside the machine. If it
takes place, leave the machine in the warm place for approx. two hours before turning on the
power.) Powering on the machine with dew condensation will result in damaged electronic
devices.
(4) The machine is not exposed to direct sunlight or harmful gases.
Summary of Contents for DCP-1000
Page 1: ...Multi Function Machine SERVICE MANUAL MODEL MFC6800 DCP1000 MFC9180 MFC9160 ...
Page 5: ...CHAPTER 1 GENERAL DESCRIPTION ...
Page 12: ...CHAPTER 2 INSTALLATION ...
Page 17: ...CHAPTER 3 THEORY OF OPERATION ...
Page 19: ...3 1 3 1 OVERVIEW Provided on models supporting facsimile function ...
Page 21: ...3 3 ...
Page 29: ...3 11 Location of Sensors and Actuators ...
Page 31: ...CHAPTER 4 DISASSEMBLY REASSEMBLY AND LUBRICATION ...
Page 38: ...4 5 n Disassembly Order Flow ...
Page 70: ...4 37 6 Turn the ASF upside down then remove the registration sensor actuator ...
Page 78: ...4 45 Setting up the main PCB after replacement ...
Page 104: ...CHAPTER 5 MAINTENANCE MODE ...
Page 111: ...5 6 Scanning Compensation Data List ...
Page 119: ...5 13 For machines w fax For machines w o fax Key Button Entry Order ...
Page 126: ...CHAPTER 6 ERROR INDICATION AND TROUBLESHOOTING ...
Page 156: ...MFC6800 DCP1000 MFC9180 MFC9160 Appendix 1 EEPROM Customizing Codes ...
Page 159: ...MFC6800 DCP1000 MFC9180 MFC9160 Appendix 2 Firmware Switches WSW ...
Page 206: ...A Main PCB 1 5 ...
Page 207: ...A Main PCB 2 5 ...
Page 208: ...A Main PCB 3 5 ...
Page 209: ...A Main PCB 4 5 ...
Page 210: ...A Main PCB 5 5 ...
Page 211: ...B NCU PCB U S A Canada ...
Page 212: ...B NCU PCB U K Norway Netherlands Finland Denmark Sweden ...
Page 213: ...B NCU PCB Germany France Belgium Switzerland Ireland Austria Spain Italy South Africa ...
Page 214: ...B NCU PCB Asia Oceania 1 2 ...
Page 216: ...C Control Panel PCB ...
Page 217: ...D Power Supply PCB 100 120V Low voltage power supply ...
Page 218: ...D Power Supply PCB 200 240V Low voltage power supply Europe ...
Page 219: ...D Power Supply PCB 200 240V Low voltage power supply Asia Oceania ...
Page 220: ...D Power Supply PCB High voltage power supply ...
Page 221: ...E Relay PCB ...