What to do if my Citizen CT-S651 Printer is not printing?
If your Citizen printer isn't printing, the control PCB might be faulty, requiring replacement of the “SA, MAIN PCB.” Another potential cause is a bad contact or connection with the thermal head connector; try re-inserting it or replacing it. If these steps don't resolve the issue, the thermal head itself may be faulty and need replacement.
How to fix Citizen CT-S651 Printer when power cannot be turned on?
If your Citizen printer won't power on, first ensure the power cable is securely connected. If the issue persists, the fuse might be blown and needs replacement with the specified fuse. If the fuse blows again immediately after replacement, or if the circuit drive power is abnormal, replace the “SA, MAIN PCB”.
Why is my Citizen Printer paper not feeding straight?
If your Citizen printer isn't feeding paper correctly, check the following: * Ensure the motor connector is correctly connected. * The motor might be faulty, consider replacing “UNIT, MOTOR.” * Verify the supply voltage is within the specified range. * The control PCB could be faulty, needing replacement of “SA, MAIN PCB.” * Make sure the platen roller is correctly mounted. * Remove any unnecessary paper and ensure it's set correctly. * Check for foreign substances in the gear or broken gears; remove any obstructions or replace broken gears.
What to do if my Citizen Printer print is pale?
If your Citizen printer's output is pale, uneven, or faint, several factors could be responsible. First, ensure that the supply voltage is within the specified range. If that's not the issue, the thermal head may be faulty and require replacement. Additionally, check the thermal head for fouling and remove it with an ethyl alcohol-soaked cotton swab or soft cloth. Using paper other than what's recommended can also cause this issue, so replace it with the specified paper. Finally, make sure the platen roller is correctly mounted and the paper thickness setting lever is in the correct position.
How to fix Citizen Printer when part of printing is not done?
If your Citizen printer is only partially printing, the thermal head connector may have a bad contact, connection, or faulty mounting. Try re-inserting the thermal head connector or replacing the “HEAD SA.” Another possibility is a faulty thermal head, which would require replacement.
What causes the auto cutter to not operate on a Citizen CT-S651 Printer?
If the auto cutter on your Citizen printer isn't working, start by checking the connector for a bad connection and ensure it is correctly connected. If the connection is good, the auto cutter itself may be faulty. If the supply voltage is normal, replace the auto cutter. Also, check for paper jams; remove any unnecessary paper and set the paper correctly.
Why is my Citizen CT-S651 Printer paper sensor not working?
If your Citizen printer isn't detecting paper presence, paper near end, or the open/close state of the cover, the issue might stem from several sensor-related problems. The paper sensor or the paper near end sensor could be faulty, requiring replacement of “UNIT, PE” or “UNIT, PNE” respectively. A broken sensor spring can also cause this; replace “UNIT, PE” or “UNIT, PNE.” Check the connector for a bad connection and ensure it's correctly connected. Lastly, the sensor lever spring might be broken, needing replacement of “SPRING INTERLOCK.”
What to do if the operation panel LED does not illuminate on Citizen CT-S651?
If the operation panel LED on your Citizen printer isn't illuminating, first check the connector for a bad connection or cable disconnection. Connect the connector correctly or replace “SA, OP-PANEL CABLE.” If the problem persists, the “OP-PANEL PCB” may be faulty, requiring replacement of “UNIT, OP-PANEL PCB.”
Overview of the service manual's purpose and content for CT-S651 Series printers.
Lists the necessary tools for performing printer disassembly and reassembly procedures.
Step-by-step instructions for disassembling the printer and its mechanism unit.
Guidance on reassembling printer components and performing essential lubrication.
Explanation of LED error patterns and detailed descriptions of printer error conditions.
Methodology for fault diagnosis and guides for common printer failures.
Catalog of mechanical parts with numbers, quantities, and visual exploded diagrams.
Layout diagrams illustrating the placement of various PCBs like MAIN, SERIAL, USB, and ETHERNET.
Detailed schematics for the Main PCB sections: CPU, ROM, RAM, SENSORS, and POWER.
Circuit diagrams for Serial, Parallel, USB, USB HUB, Powered USB, and Ethernet Interface PCBs.
Circuit diagrams for CPU2, SD RAM, PHY, and I/F sections of the Ethernet Interface PCB.
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