Description: Circuit related service call. Toner IC chip access circuit board error
Causes: Toner cartridge MAIN board HRNS-MAIN-PU-240 CTIF board
Remedy: 1 Does the recommended toner cartridge display appear when the toner supply cover is opened and closed? Yes Use the recommended TOSHIBA toner cartridge. 2 No 2 Toner cartridge • Check the phenomenon by removing the toner cartridges and reinserting them. • Check that the CTRG board of the cartridge is installed properly. 3 Contact point on the equipment side Check that the spring of the contact point is not deformed. 4 Is the spring of the contact point returned when it is pushed lightly? Yes No • Check that the CTIF board is installed properly. • Board check 7 5 MAIN board • Connector check (CN15) • Board check 6 HRNS-MAIN-PU-240 • Connector check (Main board: CN15, CTIF board: CN150) • Harness check 7 CTIF board • Check that the board is installed properly. • Board check
Code: C940
Description: Circuit related service call. Engine-CPU abnormality
Causes: MAIN board
Remedy: Main power switch Turn OFF the main power switch, then back ON. Engine-CPU and FROM Check if the conductor pattern between the Engine-CPU and FROM is short circuited or open circuited. MAIN board Board check
Code: C950
Description: Circuit related service call. Error for distinction between engine firmware and MAIN board
Causes: MAIN board
Remedy: MAIN board Check that the wrong board is not installed, if it is wrong, replace it. Engine firmware Check that the model of the machine is correct, if it is wrong, download the data again.
Code: C970
Description: Process related service call High-voltage transformer abnormality: Leakage of the main charger is detected.
Causes:
Remedy: 1. Is the main charger installed securely? 2. Check if the spring of high-voltage supply contact point is deformed. 3. Check if the needle electrode is broken or the main charger grid is deformed. 4. Check if any foreign matters is on the needle electrode or the main charger grid. 5. Check if the transfer roller and the separation needle are installed securely. 6. Check if the transfer roller or the separation needle is removed. 7. Check if there is any foreign matter attached on the transfer roller or the separation needle.
Code: CA10
Description: Laser optical unit related service call. Polygonal motor abnormality: The polygonal motor is not rotating normally.
Causes: MAIN board Laser optical unit
Remedy: 1 Is the polygonal motor rotating? Yes 1. Check if the conductor pattern on the MAIN board is short circuited or open circuited. 2. Replace the MAIN board. 3. Replace the laser optical unit. No 1. Check if the connector of the harness is disconnected between MAIN board (CN32) and the laser optical unit. Reconnect it securely if so. Even if the connector is not apparently disconnected, it may be connected loosely. Therefore check carefully that it is secure. 2. Check if the harness is open circuited and the connector pin is disconnected. 3. Check if the conductor pattern on the MAIN board is short circuited or open circuited. 4. Replace the laser optical unit. 5. Replace the MAIN board.
Code: CA20
Description: Laser optical unit related service call. H-Sync detection error: H-Sync detection PC board cannot detect laser beams.
Causes: MAIN board Laser optical unit
Remedy: 1 Are the harness open circuited and the connectors disconnected between the MAIN board (CN33) and the laser optical unit? Yes 1. Even if the connector is not apparently disconnected, it may be connected loosely. Therefore check carefully that it is secure. No 1. Replace the MAIN board. 2. Replace the laser optical unit