Basic Procedures
Before You Begin
This section describes the procedures that the service technician should know before servicing the
machine. Most of the parts of the machines in this series are identical and interchangeable. However,
please note that the main boards of these machines are not the same.
• Printer. Main board has no connectors for the flatbed scanner or ADF.
• 3in1. Man board has flat connectors for the flatbed scanner only (not ADF).
• 4in1. Main board has flat connectors for both the flatbed scanner and ADF.
• Before you service the machine, make sure that you know how to open the Service Mode screen of
the Smart Organizing Monitor. This procedure is not described in this service manual.
• For more details about how to open the Service Mode screen of the Smart Organizing Monitor,
refer to the service training material.
Printer Covers
AIO
1.
Raise the top cover [A].
2.
Grip the AIO [B] by its handle and pull it out of the machine.
3.
Place the AIO on a flat clean surface as shown above so the drum is not exposed to light.
Basic Procedures
45
Summary of Contents for M178-21
Page 2: ......
Page 24: ...22 ...
Page 71: ...6 Disconnect the thermistor harness 1 7 Disconnect the exit sensor 1 Basic Procedures 69 ...
Page 90: ...Friction Pad 1 Remove 3 screws 3 2 Release 2 tabs 2 4 Replacement and Adjustments 88 ...
Page 103: ...Solenoid 101 ...
Page 105: ...2 Remove the breaker switch screw A 1 3 Disconnect and remove the switch B 2 Switches 103 ...
Page 108: ...4 Replacement and Adjustments 106 ...
Page 190: ...5 System Maintenance Reference 188 ...
Page 221: ...MEMO 219 ...
Page 222: ...MEMO 220 EN ...
Page 224: ......
Page 226: ...2 ...
Page 250: ...MEMO 26 ...
Page 251: ...MEMO 27 ...
Page 252: ...MEMO 28 EN ...