• Code: EF27
• Description: Hole Punch Unit paper edge detection order abnormality-1
• Causes: Skew sensor (S7-1/S7-2) Punch controller board
• Remedy: Finisher • Is there any paper remaining in the paper transport path in the equipment or the Finisher? Skew sensor (S7-1/S7-2) • Sensor check • Connector check • Harness check Punch controller board • Connector check • Board check

• Code: EF28
• Description: Hole Punch Unit paper edge detection order abnormality-2
• Causes: Skew sensor (S7-1/S7-2) Punch controller board
• Remedy: Finisher • Is there any paper remaining in the paper transport path in the equipment or the Finisher? Skew sensor (S7-1/S7-2) • Sensor check • Connector check • Harness check Punch controller board • Connector check • Board check

• Code: F070
• Description: Communication error between System-CPU and Engine-CPU
• Causes: Switching regulator • Replace the fuse (F210). • Replace the switching regulator. LGC board SYS board If the problem is not corrected with the replacement of the LGC board, reinstall the removed LGC board and replace the SYS board. IMG board If the problem is still not corrected with the replacement of the SYS board, reinstall the removed SYS board and replace the IMG board.
• Remedy: Switching regulator • Check the fuse (F210). • Connector check (CN404, CN405) • Board check SYS board • Check the version of the system ROM. • Connector check (CN135) LGC board • Check the version of the engine ROM. • Connector check (CN319, CN320) IMG board • Connector check (CN422, CN423, CN424) • Board check

• Code: F090
• Description: SRAM abnormality on the SYS board
• Causes: SRAM (SYS board)
• Remedy: 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. 3. After the confirmation message is displayed on the LCD, press the [INTERRUPT] button (to initialize the SRAM). 4. Perform the panel calibration (08-9050). 5. Enter the serial number (08-9601). Be sure that the serial number is the same as that on the identification label attached on the rear cover of the equipment. 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” <PRC> (05- 7869) (using [4] [FAX] test pattern). 10.Perform “Automatic gamma adjustment” <PRT (600dpi)> (05-8008) (using [70] [FAX] test pattern). 11.Perform “Automatic gamma adjustment” <PRT (1200dpi)> (05-8009) (using [230] [FAX] test pattern). 12.Turn the power OFF and then back ON. If the error is not recovered, replace the SRAM on the SYS board.

• Code: F100_0
• Description: 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: 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: 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_0 ... F101_3
• Description: [F101_0] HDD connection error (HDD connection cannot be detected.) [F101_1] Root partition mount error (HDD formatting fails.) [F101_2][F101_3] Partition mount error (The HDD cannot be connected (mounted) caused by damage to areas other than those described in the F101_1 and F101_4 to F101_9 errors.)
• Causes: HDD SATA harness SYS board
• Remedy: 1. Turn the power of the equipment OFF and check the connection of the HDD. - Connector and harness check - Check if the connector pins of the HDD are bent. - Check if HDD for other equipment is not installed. - Check if SRAM for other equipment is not installed. 2. If the error still occurs after step 1, perform the following. - Perform [3C] - [5] (Key Backup Restore) and check that each Key Status is “OK”. - If not, recover the key (copy “SRAM Key Status” to “FROM Key Status” or vice versa). 3. If the error still persists after step 2, perform the following. - Perform [3C] - [3] (Format HDD), and then install “System Software (HD data)” with [49] - [4]. Notes: The following items will be deleted by performing [3C] - [3] (Format HDD). • Message Log • Job Log • Spool Data (Print, Email reception) • Template If F101_1 occurs with ADI-HDD or the error persists after performing step 3, perform step 3 after performing [4]+[C]+[POWER]→1. Revert factory initial status HDD. 4. If the error persists even after step 3, replace the HDD. 5. If the error persists even after step 4, replace the SATA harness. 6. If the error persists even after step 5, replace the SYS board.