Remedy: 1. Check the connections between the keyboard PCB and the main PCB, and then disconnect and connect the FFCs. 2. Replace the FFCs and the cables of the above routes. 3. Replace the keyboard PCB with a new one. 4. Replace the main PCB with a new one. 5. Replace the DC power supply (5V) with a new one.
Code: 122
Display: SYSTEM HALT (*) 122 : PRAM NONE
Description: No PRAM
Remedy: 1. Update F/W. 2. Replace the PRAM PCB with a new one. 3.Replace the main PCB with a new one.
Code: 122
Display: ERROR 122 CHECK:SDRAM
Description: PRAM size is not sufficient at FW upgrading (fw_updmsg). 1. Update F/W. 2. Replace the main PCB with a new one. 3. Replace the PRAM PCB with a new one.
Remedy: 1. Update F/W. 2. Replace the main PCB with a new one. 3. Replace the PRAM PCB with a new one.
Code: 123
Display: SYSTEM HALT (*) 123 : PRAM DATA
Description: PRAM data error
Remedy: 1. Update F/W. 2. Replace the PRAM PCB with a new one. 3.Replace the main PCB with a new one.
Code: 124
Display: SYSTEM HALT (*) 124 : PRAM ADDR
Description: PRAM address error
Remedy: 1. Update F/W. 2. Replace the PRAM PCB with a new one. 3.Replace the main PCB with a new one.
Remedy: 1. Update F/W. 2. Upload the parameter and initialize parameter with #PARAMETER. 3. Check the connection state between main PCB - central-IO PCB. 4. Replace the main PCB with a new one. 5. Replace the central-IO PCB with a new one.