Toshiba Bsx4t Manual
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10. MAJOR UNIT REPLACEMENT EO18-33012A 10.4 STEPPING MOTOR 10- 8 5) Remove the four SMW-4x8 screws to detach the stepping motor from the motor bracket. 6) Replace the stepping motor with a new one, then reassemble in the reverse order of removal. At this time, take care of the following points. · Place the stepping motor so that the harness faces the Main PC board. · When reassembling the stepping motor, place the two timing belts around the pulley so that the partition is positioned between two belts. · The screw holes to attach the stepping motor are shaped oval, which allows you to adjust the attaching position. Hold down the tension gauge onto the stepping motor at 3kg force and secure it with the two SMW-4x8 screws. Screw Hole Stepping Motor Pulley Timing Belt Partition SMW-4x8 Screw Tension Gauge Motor Bracket Stepping Motor SMW-4x8 Screw SMW-4x8 Screw
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.5 RIBBON MOTORS (TAKE-UP, FEED) 10-9 10.5 RIBBON MOTORS (TAKE-UP, FEED) 10.5.1 Ribbon Motor (Take-up) 1) Remove the side panel (L). (Refer to Section 3.2.) 2) Remove the ribbon motor (take-up) harness from CN13 on the Main PC board and the cable clamp. 3) Remove the two SMW-3x6 screws to detach the ribbon motor (take-up). CN13 Main PC Board Cable Clamp Ribbon Motor (Take-up) Harness SMW-3x6 Screw Ribbon Motor (Take-up)
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.5 RIBBON MOTORS (TAKE-UP, FEED) 10-10 4) Replace the ribbon motor (take-up) with a new one, then reassemble in the reverse order of removal. At this time, take care of the following points. · Tighten the two SMW-3x6 screws with 58.8 to 88.2N cm torque. · Fit the positioning tabs of the ribbon motor (take-up) into the positioning holes of the ribbon motor block. · Apply FLOIL G-488 to the pulley using a soft cloth. · Place the ribbon motor (take-up) so that the harness faces the Main PC board. 5) Refer to Section 5.5.6 to fine adjust the ribbon motor voltage. SMW-3x6 Screw Ribbon Motor (Take-up) Positioning Tab Pulley Ribbon Motor (Take-up) Positioning Hole Ribbon Motor Block
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.5 RIBBON MOTORS (TAKE-UP, FEED) 10-11 10.5.2 Ribbon Motor (Feed) 1) Remove the side panel (L). (Refer to Section 3.2.) 2) Remove the ribbon motor (feed) harness from CN12 on the Main PC board and the cable clamp. 3) Remove the two SMW-3x6 screws to detach the ribbon motor (feed). CN12 Main PC Board Cable Clamp Ribbon Motor (Feed) Harness SMW-3x6 Screw Ribbon Motor (Feed)
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.5 RIBBON MOTORS (TAKE-UP, FEED) 10-12 4) Replace the ribbon motor (feed) with a new one, then reassemble in the reverse order of removal. At this time, take care of the following points. · Tighten the two SMW-3x6 screws with 58.8 to 88.2N cm torque. · Fit the positioning tabs of the ribbon motor (feed) into the positioning holes of the ribbon motor block. · Apply FLOIL G-488 to the pulley using a soft cloth. · Place the ribbon motor (feed) so that the harness faces the Main PC board. 5) Refer to Section 5.5.6 to fine adjust the ribbon motor voltage. SMW-3x6 Screw Ribbon Motor (Feed) Positioning Tab Pulley Ribbon Motor (Feed) Positioning Hole Ribbon Motor Block
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 10-13 10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 10.6.1 Ribbon Motor Sensor (Take-up) 1) Remove the side panel (L). (Refer to Section 3.2.) 2) Disconnect the sensor harness from the ribbon motor sensor ass’y (take-up). NOTE: The other end of the sensor harness is connected to CN51 on the Main PC board. 3) Remove the SMW-3x6 screw to detach the ribbon motor sensor ass’y (take-up). 4) Detach the ribbon motor sensor (take-up) from the ribbon sensor plate (take-up) in the following steps. NOTE: The ribbon motor sensor (take-up) is attached to the plate with the four hooks. (1) Pull the ribbon motor sensor (take-up) in the direction indicated by the arrow to unhook the two hooks on the connector side. (2) Move the ribbon motor sensor (take-up) in the direction indicated by the arrow to unhook the other hooks. (3) Detach the ribbon motor sensor (take-up) from the plate. Sensor Harness SMW-3x6 Screw Ribbon Motor Sensor Ass’y (Take-up) Ribbon Sensor Plate (Take-up) Ribbon Motor Sensor (Take-up) Hook (1) (2) (3)
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 10-14 5) Replace the ribbon motor sensor (take-up) with a new one, then reassemble in the reverse order of removal. At this time, take care of the following points. · Attach the ribbon motor sensor (take-up) to the ribbon sensor plate (take-up) in the correct direction. · Fit the positioning tabs of the ribbon sensor plate (take-up) into the positioning holes of the ribbon motor block. · Make sure that the gear with slits passes between the sensor portions. NOTE: This photo was taken from the gear side for being visible. Positioning Tab Positioning Hole Ribbon Sensor Plate (Take-up) Ribbon Motor Block Gear with Slits Sensor Portion
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 10-15 10.6.2 Ribbon Motor Sensor (Feed) 1) Remove the side panel (L). (Refer to Section 3.2.) 2) Disconnect the sensor harness from the ribbon motor sensor ass’y (feed). NOTE: The other end of the sensor harness is connected to CN51 on the Main PC board. 3) Remove the SMW-3x6 screw to detach the ribbon motor sensor ass’y (feed). 4) Detach the ribbon motor sensor (feed) from the ribbon sensor plate (feed) in the following steps. NOTE: The ribbon motor sensor (feed) is attached to the plate with the four hooks. (1) Pull the ribbon motor sensor (feed) in the direction indicated by the arrow to unhook the two hooks on the connector side. (2) Move the ribbon motor sensor (feed) in the direction indicated by the arrow to unhook the other hooks. (3) Detach the ribbon motor sensor (feed) from the plate. Sensor Harness SMW-3x6 Screw Ribbon Motor Sensor Ass’y (Feed) (1) (2) (3) Ribbon Sensor Plate (Feed) Ribbon Motor Sensor (Feed) Hook
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.6 RIBBON MOTOR SENSORS (TAKE-UP, FEED) 10-16 5) Replace the ribbon motor sensor (feed) with a new one, then reassemble in the reverse order of removal. At this time, take care of the following points. · Attach the ribbon motor sensor (feed) to the ribbon sensor plate (feed) in the correct direction. · Fit the positioning tabs of the ribbon sensor plate (feed) into the positioning holes of the ribbon motor block. · Make sure that the gear with slits passes between the sensor portions. NOTE: This photo was taken from the gear side for being visible. Positioning Tab Positioning Hole Ribbon Sensor Plate (Feed) Ribbon Motor Block Gear with Slits Gear with Slits Sensor Portion
10. MAJOR UNIT REPLACEMENT EO18-33012A 10.7 PRINT HEAD 10-17 10.7 PRINT HEAD CAUTION! 1. Never touch the element when handling the print head. 2. Never touch the connector pins to avoid a breakdown of the print head by static electricity. 3. Never remove the screws which secure the print head to the bracket. Doing so may cause improper print quality. 4. Never disassemble the head block frame. Doing so may cause a print failure, such as ribbon wrinkle, blurred print, etc. 1) Open the top cover. (Refer to Section 3.1.) 2) Turn the head lever to the Free position to open the ribbon shaft holder plate. (Refer to Section 3.3.) WARNING! Never perform the replacement just after printing. Doing so may cause you to be injured by the print head being hot. Print Head Bracket Screw Head Block Frame