Technical Brief (Impact Printers)
Page 4
... printing on the control panel. Bundled Microsoft Windows® 3.1x, Windows NT 3.51/4.0, Windows 95 and Windows 98 drivers guarantees ease of use right out of -form position. Versatility-Built-in fonts Each EPSON impact printer includes a variety of built-in fonts: LL Bitmap fonts-available on all of the built-in favor of...
... printing on the control panel. Bundled Microsoft Windows® 3.1x, Windows NT 3.51/4.0, Windows 95 and Windows 98 drivers guarantees ease of use right out of -form position. Versatility-Built-in fonts Each EPSON impact printer includes a variety of built-in fonts: LL Bitmap fonts-available on all of the built-in favor of...
Service Manual
Page 38
... (0 0ml0 ,PS RAM E I MASK ROM 0: n: ~~ 0' CN2 for OPTION IF TRANSISTOR . . HEAD DRIVE GATE ARRAY TRANSISTOR E05A66YA c80-column model> Figure 1-12. PF MOTOR DRIVER LPAI 476H CPU TM P90C041F CENTRONICS l/F CR MOTOR o ~~~f~4M ~ ~> E2PROM 7 \ n \ Ill \' " q " *PS RAM 1 Cl"lp E ~ o0 Q ~-... BOARD ASSEMBLY, C094 MAIN (Main Control Circuit B-d 1-29 o r ~ r '- ~0 "- It consists of the printer. I +7 "MASK I BOARD ASSEMBLY, C094 MAIN (Main Control Circuit Board) REV.-A Basically, the same board layout is used in both the 136-column ...
... (0 0ml0 ,PS RAM E I MASK ROM 0: n: ~~ 0' CN2 for OPTION IF TRANSISTOR . . HEAD DRIVE GATE ARRAY TRANSISTOR E05A66YA c80-column model> Figure 1-12. PF MOTOR DRIVER LPAI 476H CPU TM P90C041F CENTRONICS l/F CR MOTOR o ~~~f~4M ~ ~> E2PROM 7 \ n \ Ill \' " q " *PS RAM 1 Cl"lp E ~ o0 Q ~-... BOARD ASSEMBLY, C094 MAIN (Main Control Circuit B-d 1-29 o r ~ r '- ~0 "- It consists of the printer. I +7 "MASK I BOARD ASSEMBLY, C094 MAIN (Main Control Circuit Board) REV.-A Basically, the same board layout is used in both the 136-column ...
Service Manual
Page 110
coil resistance correct (5 ohms +/- 7 '%. REV.-A Flowchart (2) carriage operation abnormal START CN3, 4, 5, 6, 7, 8, 9, and 13 connecting the BOARD ASSY., C094 MAI and the printer mechanism Yes Secure the connectors. problem corrected? problem corrected? v Refer to Section 5.5, Repairing the Printer Mechanism. END * END * Note: If any coils in the CR motor are shorted, also test the motor drivers on the BOARD ASSY., C094 MAIN. 5-6 at room v Replace the BOARD ASSY,, C094 MAIN.
coil resistance correct (5 ohms +/- 7 '%. REV.-A Flowchart (2) carriage operation abnormal START CN3, 4, 5, 6, 7, 8, 9, and 13 connecting the BOARD ASSY., C094 MAI and the printer mechanism Yes Secure the connectors. problem corrected? problem corrected? v Refer to Section 5.5, Repairing the Printer Mechanism. END * END * Note: If any coils in the CR motor are shorted, also test the motor drivers on the BOARD ASSY., C094 MAIN. 5-6 at room v Replace the BOARD ASSY,, C094 MAIN.
Service Manual
Page 112
coil resistance correct (63 ohms +/- 3 at room smoothly when the printer No [ I Yes vEND vEND Note: If any coils in the PF motor are shorted, also test the motor drivers on the BOARD ASSY., C094 MAIN. 5-8 END * Replace the PF motor. I Refer to Section 5.5, Repairing the Printer Mechanism. Insert connector CN6 correctly. REV.-A Flowchart (4) paper feeding abnormal c" (==) Load the paper correctly. Repair the BOARD ASSY., C094 MAIN.
coil resistance correct (63 ohms +/- 3 at room smoothly when the printer No [ I Yes vEND vEND Note: If any coils in the PF motor are shorted, also test the motor drivers on the BOARD ASSY., C094 MAIN. 5-8 END * Replace the PF motor. I Refer to Section 5.5, Repairing the Printer Mechanism. Insert connector CN6 correctly. REV.-A Flowchart (4) paper feeding abnormal c" (==) Load the paper correctly. Repair the BOARD ASSY., C094 MAIN.
Service Manual
Page 123
...The platen gap is defective. Check if the tip of the dot wire is shorted, also check the drivers on the main board. 5-19 Set the LEVER, G. Repairing the Printer Mechanism (Continued) symptom Cause Checkpoint Solution The carriage The common wires Check the common moves, but does not...check the gap between the the printhead and the platen. Replace the printhead. (If any coil is shorted, also check the drivers on the main board. Replace the printhead. The printer does not print a particular dot. Paper feeding abnormal. in the printhead FFC wires in the t e s t printing is ...
...The platen gap is defective. Check if the tip of the dot wire is shorted, also check the drivers on the main board. 5-19 Set the LEVER, G. Repairing the Printer Mechanism (Continued) symptom Cause Checkpoint Solution The carriage The common wires Check the common moves, but does not...check the gap between the the printhead and the platen. Replace the printhead. (If any coil is shorted, also check the drivers on the main board. Replace the printhead. The printer does not print a particular dot. Paper feeding abnormal. in the printhead FFC wires in the t e s t printing is ...