LG OK75 - Hidden Key Mode Operations

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Only for training and service purposes.
HIDDEN MODE ENTRANCE KEY(Audio) EXIT KEY
Version Check
Front ‘Stop’ 
+ Remote Control Key ‘Play’ for 5s
Remote Control Key ‘Play’ for 1.5s
EEPROM INITIAL
Front ‘Stop’ 
+ Remote Control Key ‘ ‘ for 5s
Auto exit
1. HIDDEN KEY MODE TABLE
HIDDEN KEY MODE
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2. HIDDEN KEY MODE DESCRIPTION
2-1. Version Check
- Function : Version Check.
- Entrance Key : Front ‘Stop’ + Remote Control Key ‘Play’ for 5s.
- Exit Key : Remote Control Key ‘Play’ for 1.5s.
- Operation explanation : Remote Control Key OR .
VFD Display (Example) Result
MCS Version
MICOM Version
OPTION Version
DEMO Version
DJ PRO Version
EQ Version
EQ Check sum Version
2-2. EEPROM Initial
- Function : Initialize data stored in EEPROM and BACKUP RAM data.
- Entrance Key : Front ‘Stop’ + Remote Control Key ‘ ‘ for 5s.
- Exit Key : Auto exit.
- Explanation : ‘E2P CLR’ is displayed on the VPD and turn off the power automatically.