Outline Of Control Electronics; Main Pcb; Media Position Detect Sensor Pcb (Tape Sensor - Brother P-touch QL-1050 Service Manual

2.2

OUTLINE OF CONTROL ELECTRONICS

Fig. 2.2-1 shows the block diagram of the control electronics. The control electronics consist
of the following components.
Cutter home
position sensor
CN9
Key, LED PCB
(SB PCB)
DC8V Power PCB ASSY
2.2.1

Main PCB

This manages all the components. This PCB consists of CPU, EEPROM, USB chip and
motor drivers etc.
2.2.2

Media Position Detect Sensor PCB (Tape Sensor)

This sensor PCB detects the printing start position for the die cut label, and checks existence
of the zebra pattern for the free length label, using reflection type photo sensor.
PC
USB
CN8
CN10
CN15
Media feed motor
Power supply PCB
Fig. 2.2-1 Block Diagram of the Control Electronics
Fan motor unit
Serial
CN5
CN7
CN11
CN14
Media position
detect sensor
II- 6
Cutter motor
CN6
CN13
Cover open sensor
Thermal head