The table for repairing the CH83 Main board

Turn on the printer without connecting TPM board and SSD unit, and restore NVRAM data from the service program.
If you connect the TPM board and SSD before restoring the backup data from the PC to the new board, the SSD may be initialized means format.

Assumed case				User panel operation	NVRAM area	SSD in use	SSD status in use	Service support
Repairing the CH83 Main board	NVRAM Backup OK	SSD OK	TPM board OK	Use encryption function	Encrypted area	Customer data can be inherited	Continued use including customer data	Turn on the printer without connecting TPM board and SSD unit, and restore NVRAM data from the service program.
				Use encryption function	Unencrypted area	Customer data can be inherited
				No use encryption function	Encrypted area	Customer data can be inherited
				No use encryption function	Unencrypted area	Customer data can be inherited
			TPM board NG	Use encryption function	Encrypted area	Customer data cannot be inherited (Access to both of NVRAM encrypted area & SSD encrypted area cannot be inherited)	Customer data will be lost, but it can be used as storage (Data in SSD will be erased / Data registration (password related) needs to be re-registered)	Replace the TPM board. Turn on the printer without connecting TPM board and SSD unit, and restore NVRAM data from the service program. Some data cannot be inherited in NVRAM (encrypted area: adjustment values can be inherited, but can be inherited during NVRAM Backup, but the parts that can be set by the customer cannot be inherited from the LCD panel settings, so resetting is required) Password related is NG: Wireless connection password Administrator password Scan data on PC: Address book needs to be reset (model with scanner)
				Use encryption function	Unencrypted area	Customer data can be inherited (Accessible to the unencrypted area of NVRAM / Inaccessible to the encrypted area of SSD)
				No use encryption function	Encrypted area	Customer data cannot be inherited (Access to both of NVRAM encrypted area & SSD encrypted area cannot be inherited)
				No use encryption function	Unencrypted area	Customer data can be inherited (Accessible to the unencrypted area of NVRAM / Inaccessible to the encrypted area of SSD)
		SSD NG	TPM board OK	Use encryption function	Encrypted area	Customer data cannot be inherited	Function as storage NG → SSD needs to be replaced with a new one For NVRAM data, data can be backup in both encrypted and unencrypted areas. SSD: Data inheritance and storage function are NG.	Replace the SSD unit.
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited
				No use encryption function	Unencrypted area	Customer data cannot be inherited
			TPM board NG	Use encryption function	Encrypted area	Customer data cannot be inherited	Function as storage NG → SSD needs to be replaced with a new one For NVRAM data, encrypted area backup is NG / unencrypted area data can be backup. SSD: Data inheritance and storage function are NG.	Replace the SSD unit and TPM board. adjustment values can be inherited, but can be inherited during NVRAM Backup, but the parts that can be set by the customer cannot be inherited from the LCD panel settings, so resetting is required Password related is NG: Wireless connection password Administrator password Scan data on PC: Address book needs to be reset (model with scanner)
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited		Replace the SSD unit. (Since the encryption function is not used, there is no disadvantage to the user just by replacing the SSD: Turn on the printer without connection the TPM board and SSD unit, and there is no problem in NVRAM data restoration from the PC.)
				No use encryption function	Unencrypted area	Customer data cannot be inherited
			TPM board OK	Use encryption function	Encrypted area	Customer data cannot be inherited	Function as storage NG → SSD needs to be replaced with a new one For NVRAM data, data can be backup in both encrypted and unencrypted areas. SSD: Data inheritance and storage function are NG.	Replace the SSD unit.
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited
				No use encryption function	Unencrypted area	Customer data cannot be inherited
			TPM board NG	Use encryption function	Encrypted area	Customer data cannot be inherited	Function as storage NG → SSD needs to be replaced with a new one For NVRAM data, encrypted area backup is NG / unencrypted area data can be backup. SSD: Data inheritance and storage function are NG.	Replace the SSD unit and TPM board. adjustment values can be inherited, but can be inherited during NVRAM Backup, but the parts that can be set by the customer cannot be inherited from the LCD panel settings, so resetting is required Password related is NG: Wireless connection password Administrator password Scan data on PC: Address book needs to be reset (model with scanner)
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited		Replace the SSD unit and TPM board.
				No use encryption function	Unencrypted area	Customer data cannot be inherited		Replace the SSD unit and TPM board.
	NVRAM Backup NG	SSD OK	TPM board OK	Use encryption function	Encrypted area	Customer data cannot be inherited	Customer data will be lost, but it can be used as storage as an SSD. How to hold the data inside: SSD data → It is also managed in Flash Job information (authentication printing) → Data is in SSD, but there is management data Flash is NG, so data is also NG.	In the case of NVRAM Backup NG, information on options and TPM board cannot be backup → All information cannot be backup. Make initial settings with all attached the parts.　(Since the problem is that the data is not consistent when restored, it is necessary to reconfigure the SSD / PS3 unit / TPM board with it installed regardless of whether it is alive or broken.)
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited
				No use encryption function	Unencrypted area	Customer data cannot be inherited
			TPM board NG	Use encryption function	Encrypted area	Customer data cannot be inherited
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited
				No use encryption function	Unencrypted area	Customer data cannot be inherited
		SSD NG	TPM board OK	Use encryption function	Encrypted area	Customer data cannot be inherited	Function as storage NG → SSD needs to be replaced with a new one
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited
				No use encryption function	Unencrypted area	Customer data cannot be inherited
			TPM board NG	Use encryption function	Encrypted area	Customer data cannot be inherited
				Use encryption function	Unencrypted area	Customer data cannot be inherited
				No use encryption function	Encrypted area	Customer data cannot be inherited
				No use encryption function	Unencrypted area	Customer data cannot be inherited

# The table for repairing the CH83 Main board

The table for repairing the CH83 Main board