Display System By Micro-Computer - Brother BL6200 Service Manual

3. DISPLAY SYSTEM BY MICRO-COMPUTER (B341 ⋅ B351)
An 8 bit micro-computer in models installed with an LCD (liquid crystal display) regulates the LCD controller
driver which controls the information shown on the display.
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1 LINE DISPLAY SYSTEM BLOCK CHART
Power supply
circuit and
motor control
circuit
Motor control
P.C. board
Pattern
LCD panel
LCD controller
driver
(SED1278)
8-bit MCU
(M38004M8)
BH Iever
sensor SW
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LCD unit
Contrast
volume
Message key
Bobbin winder
SW