Chapter 4: Troubleshooting
7156 Service Guide
September 1998
54
Check MICR head solenoid with an ohmmeter. Reading
should show about 30 ohms.
Note about the MICR check reader: The MICR feature has been factory adjusted for a
normal operating environment. However, additional devices, such as CRT monitors, or
large metal surfaces that are near the printer can affect the printer’s magnetic field,
causing intermittent reading errors when the MICR is in operation.
This condition can be easily diagnosed by checking the MICR adjustment which allows
you to reset the MICR if the factory setting has been altered by your operating
environment. If you have to adjust the MICR frequently, you may want to move the
printer away from metal surfaces or CRT monitors.
Summary of Contents for 7156
Page 16: ......
Page 20: ...Chapter 1 About the 7156 Printer 7156 Service Guide September 1998 6...
Page 34: ...Chapter 2 Setting Up the Printer 7156 Service Guide September 1998 20...
Page 72: ...Chapter 5 Adjustments 7156 Service Guide September 1998 58...
Page 79: ...7156 Service Guide Chapter 6 Removing the Thermal Receipt Mechanism September 1998 65...
Page 81: ...7156 Service Guide Chapter 6 Removing the Thermal Receipt Mechanism September 1998 67...
Page 99: ...7156 Service Guide Chapter 8 Replacing the Thermal Receipt Mechanism September 1998 85...
Page 101: ...7156 Service Guide Chapter 8 Replacing the Thermal Receipt Mechanism September 1998 87...
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Page 158: ...Chapter 15 Removing the Base Feed Mechanism 7156 Service Guide September 1998 144...
Page 164: ...Chapter 16 Forms Compensation Arm Assembly 7156 Service Guide September 1998 150...
Page 172: ...Chapter 18 Solenoid and Pivot Arm Assemblies 7156 Service Guide September 1998 158...
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Page 198: ...Appendix D Ordering Paper and Supplies 7156 Service Guide September 1998 184...
Page 204: ...Index 7156 Service Guide September 1998 190...
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