Epson TM-U950 - Page 10

vi Rev. A
Chapter 3 Handling and Maintenance
Handling .....................................................................................................................................................................................3-1
Handling Precautions .......................................................................................................................................................3-1
Loading the Paper Rolls ...................................................................................................................................................3-2
Removing the Paper Rolls ................................................................................................................................................3-4
Inserting Slip Paper and Printing on Slip Paper ...........................................................................................................3-5
Printing on Personal Checks (only on printers with a MICR reader) (not available for the TM-U950P) ............3-6
Installing and Removing the Ribbon Cassette ..............................................................................................................3-8
Inserting the Stamp Set .....................................................................................................................................................3-9
Mounting the Power Switch Cover ................................................................................................................................3-10
Journal Lock Key Handling .............................................................................................................................................3-10
Removing the Jammed Paper ..........................................................................................................................................3-10
Maintenance ...............................................................................................................................................................................3-13
Periodic Checks .................................................................................................................................................................3-13
Cleaning ..............................................................................................................................................................................3-13
Lubrication .........................................................................................................................................................................3-14
Tool List ..............................................................................................................................................................................3-17
Measuring Equipment List ..............................................................................................................................................3-18
Lubricant List .....................................................................................................................................................................3-18
Chapter 4 Troubleshooting
Troubleshooting ........................................................................................................................................................................4-1
Self-test ................................................................................................................................................................................4-1
Troubleshooting Flowchart ..............................................................................................................................................4-4
Troubleshooting Tables ....................................................................................................................................................4-12
Major Part Replacements .........................................................................................................................................................4-23
Fuse replacement ...............................................................................................................................................................4-23
Print Head Unit Replacement .........................................................................................................................................4-23
Cutter Blade Replacement ................................................................................................................................................4-23
Error Types And Countermeasures ........................................................................................................................................4-24
Chapter 5 Disassembly, Assembly, and Adjustment
Small Part Specifications ..........................................................................................................................................................5-1
Actual Size E-type Retaining Rings ................................................................................................................................5-1
Disassembly ...............................................................................................................................................................................5-2
Replacing the Print Head Unit ........................................................................................................................................5-3
Replacing the Cutter Blade ..............................................................................................................................................5-5
Printer Mechanism Unit Assembly .........................................................................................................................................5-6
Sub-assembly A: Detector-Paper Assembly...................................................................................................................5-7
Sub-assembly B: Paper Guide-Upper Unit Assembly .................................................................................................5-8
Sub-assembly C: Paper Guide-Lower Unit Assembly..................................................................................................5-10
Sub-assembly D: Cutter Motor Mount Plate Assembly ...............................................................................................5-12
Sub-assembly E: Roller-Paper Hold Assembly..............................................................................................................5-12
Sub-assembly F: Cutter Frame Assembly.......................................................................................................................5-13
Sub-assembly G: Detector-Slip Ejection Assembly .......................................................................................................5-13
Sub-assembly H: Auto-cutter Unit Assembly ...............................................................................................................5-14
Sub-assembly I: Pulley Base-Carriage Transmission Assembly .................................................................................5-17
Sub-assembly J: Carriage-Head Assembly ....................................................................................................................5-17
Sub-assembly K: Assembling the MICR Head Holder Assembly (for printers with a MICR reader) .................5-18
Sub-assembly L-(1): Frame-Carriage Unit Assembly (for printers without a MICR reader) .................................5-22
Sub-assembly L-(2): Frame Carriage Unit Assembly (for printers with a MICR reader)........................................5-27
Sub-assembly M: Frame-Inner Assembly.......................................................................................................................5-35
Sub-assembly N: Detector-Slip Insertion Assembly .....................................................................................................5-36
Sub-assembly O: Solenoid J/S Changeover Assembly.................................................................................................5-36
Sub-assembly P: Paper Guide-Slip-Lower Assembly...................................................................................................5-37
CONFIDENTIAL