LG LRDN22734SB Service Manual page 36

8-2-9 Key Button Input & Display Light-On Circuit
➧ The circuit shown above determines whether a function control key on the operation display is pushed. It also turns on the
corresponding function indication LED (LED Module) SEVEN SEGMENT DISPLAY (SEVEN SEGMENT DISPLAY
MODULE). The drive type is the scan type
8-2-10 Power Failure Compensation Circuit (DISPENSER MODEL)
R25
220 1 2W
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