2-26 Mechanism Configuration and Operating Principles Rev. A
Switch PCB unit
❏ FEED buttons
❏ LEDs (power, paper status, and error)
❏ Cover open sensor
Main PCB
❏ Power supply circuit
❏ Reset circuit
❏ CPU
❏ Memory (ROM: 512 KB, RAM: 64 KB, EEPROM)
❏ Gate array
❏ Operation panel control circuit
❏ Host interface circuit
❏ Drawer kick-out circuit
❏ Print head drive circuit
❏ Solenoid drive circuits
❏ Paper feed motor drive circuit
❏ Auto-cutter control
❏ Carriage motor drive circuit
❏ Actuator irregular operation protection circuit
❏ Mechanism sensor circuits
❏ IM-403/405 connection circuit (not supported by the TM-U950P)
MICR board (on printers with an MICR reader) (not available on the TM-U950P)
❏ Power supply section (eliminates power supply noise)
❏ Input section (protects against excessive voltage)
❏ Amplifier section
❏ Signal limiting section
❏ Signal switching section
❏ Self-bias current supplier
CONFIDENTIAL
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