Haier HLC22K1 Servise Manual page 40

Factory Scan: According to ANTENNA-ANALOG---〉ANTENNA-DIGITAL---〉CABLE-
ANALOG---〉CABLE- DIGITAL to search channels, used only in project debugging.
Tuner Diagnostic: Project debugging setting, used to inspect the audio function.
8-2-5Gamma
Gamma:
Bright：GAMMA0.8 Middle：default settings in the program Dark：GAMMA1.2
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