Brother P-touch PT-3600, Service Manual

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2.2 OUTLINE OF CONTROL ELECTRONICS
2.2.1 Configuration
Fig. 2.2-1 shows a block diagram of the control electronics of the PT-9600/3600.
Main PCB
This manages all the PT-9600/3600 components including thermal print head, motors, sensors,
memorys, I/Fs.
LCD PCB
The LCD PCB consists of the circuit controlling the LCD display. The LCD consists of 119 dots
x 24 dots and guidance.
Key PCB
This is a flexible PCB of the sheet type.
Tape Feed Motor
The tape feed motor is the drive to feed both the ribbon and the tape. This Ø25 stepping motor
runs at a drive voltage of VH (24V).
Tape Control Motor
The tape control motor presses the tape when the tape is cut. It also controls to switch between
full cutter and half cutter.
Carriage Motor
The carriage motor moves the cutter carriage. It also switches that the cutter carriage goes up
and down by its rotating and reversing.
Eject Motor
The eject motor ejects the cut tape.
Thermal Head
The thermal head has 384 dots x 1dots (360dpi), thin-film configuration and incorporates a
drive circuit. The drive voltage is VH (24V).
Cutter Sensor PCB 1&2
The cutter sensor PCBs 1 & 2 detect the position of the cutter carriage.
Cassette & Cover Open Sensor PCB
The cassette sensor PCB is equipped with the sensor which detects the cassette tape width and
ink ribbon type, and the sensor (mechanical switch) which detects the open cassette cover.
Tape end sensor PCB
The tape end sensor PCB uses a photo-interrupter to detect the tape end (zebra) pattern.
AV Sensor PCB (PT-9600/PT-3600 U.S.A.)
The reflex photo-interrupter which detects the print starting position on the Avery cassette tape
is mounted on the AV sensor PCB.
AV Cassette Sensor (PT-9600/PT-3600 U.S.A.)
The AV cassette sensor detects that the Avery cassette tape is installed or not.