• Code: CF90
• Description: Laser optical unit shutter abnormality
• Causes: Shutter unit LGC board
• Remedy: 1 Shutter motor (M38) • Motor check (Perform the output check: 03-417) • Connector check (J606, J561) 2 Shutter • Check the installation • Check operation 3 Shutter sensor • Sensor check (Perform the input check: 03- [FAX]ON/[2]/[D]) • Connector check (J606) • Harness check 4 LGC board • Connector check (CN359) • Board check

• Code: F070
• Description: Communication error between System-CPU and Engine-CPU
• Causes: LGC board SYS board IMG board
• Remedy: Check ROM version • Check the version of the system ROM on the SYS board. • Check the version of the engine ROM on the LGC board. Board check • Check if the connector CN423 on the IMG board and the connector CN354 on the LGC board are completely inserted. • Check if the connector pin between the IMG board (connector CN423) and the LGC board (connector CN354) is disconnected. • Check if the connector CN422 on the IMG board and the connector CN135 on the SYS board are completely inserted. • Check if the connector pin between the IMG board (connector CN422) and the SYS board (connector CN135) is disconnected. • Check if the conductor patterns on the IMG board, LGC board and SYS board are short circuited or open circuited

• Code: F090
• Description: SRAM abnormality on the SYS board
• Causes: SRAM on the SYS board SYS board
• Remedy: SRAM Check the connection of SRAM 1. Turn the power OFF, and start up the Setting Mode (08). 2. When “SRAM REQUIRES INITIALIZATION” is displayed on the LCD, check the destination and then press the [START] button. If the destination is not correct, key in the correct one and then press the [START] button. (SRAM is initialized.) 3. After the confirmation message is displayed, press the [INTERRUPT] button. 4. Perform the panel calibration (08-9050). 5. Enter the serial number (08-9601). Match it with the serial number on the label attached to the rear cover of the equipment. Remarks: Although a 12-digit serial number is printed on the identification label, register only 9 digits (3rd digit to 11th digit) for the serial number. 6. Initialize the NIC information (08-9083). 7. Turn the power OFF and then start up with the Adjustment mode (05). 8. Perform “Data transfer of characteristic value of scanner” (05-3203). 9. Perform “Automatic gamma adjustment” <PPC> (05-7869). (using [4][FAX] test pattern) 10.Perform “Automatic gamma adjustment” <PRT> (05-8008). (using [70][FAX] test pattern) 11.Turn the power OFF and then back ON. SYS board Board check

• Code: F100_0
• Description: HDD format error (license data damaged). HDD format error: Operation of HDD key data fails.
• Causes:
• Remedy: Setting Reboot the equipment. If it cannot be recovered, reinstall the software in the following procedure. (1) Install the OS data.

• Code: F100_1
• Description: HDD format error (HDD encryption key data damaged - one board). HDD format error: Encryption key data of either the SYS board or the SRAM board for the SYS board are damaged.
• Causes:
• Remedy: Encryption key status Check the displayed message. ([3] + [C] + [POWER] → 5. Key Backup Restore)

• Code: F100_2
• Description: HDD format error (HDD encryption key data damaged - both boards). HDD format error: Encryption key data of both the SYS board and the SRAM board for the SYS board are damaged.
• Causes:
• Remedy: Encryption key status Check the displayed message. ([3] + [C] + [POWER] → 5. Key Backup Restore)

• Code: F101
• Description: HDD unmounted. HDD unmounted: Connection of HDD cannot be detected.
• Causes: HDD SYS board
• Remedy: HDD • Connector and harness check • Check if the connector pins of the HDD are bent. • Perform the bad sector check (08-9072). If the check result is OK, recover the data in the HDD. If the check result is failed, replace the HDD.

• Code: F102
• Description: HDD start error. HDD start error: HDD cannot become “Ready” state.
• Causes: HDD SYS board
• Remedy: HDD • Connector and harness check • Check if the connector pins of the HDD are bent. • Perform the bad sector check (08-9072). If the check result is OK, recover the data in the HDD. If the check result is failed, replace the HDD.