• Code: 7002
• Description: Cyan toner feed motor lock
  • The revolution of the cyan toner feed motor does not reach the predetermined revolution within the predetermined period when ASIC (U8) on the engine controller PWB (KP-992) activates the cyan toner feed motor.
• Causes: Defective engine controller PWB (KP-992). Defective cyan developer (Cyan developer PWB [KP-1003]). Defective harness (2CK2702, 2CK2705) between engine controller PWB (KP-992) and cyan developer, or poor contact of the connector terminals.ls.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the cyan developer. See page 1- 6-16. Check the continuity of the harness (2CK2702, 2CK2705). Check the insertion of connectors.

• Code: 7003
• Description: Magenta toner feed motor lock
  • The revolution of the magenta toner feed motor does not reach the predetermined revolution within the predetermined period when ASIC (U8) on the engine controller PWB (KP-992) activates the magenta toner feed motor..
• Causes: Defective engine controller PWB (KP-992). Defective magenta developer (Magenta developer PWB [KP-1003]). Defective harness (2BM2854, 2CK2704) between engine controller PWB (KP-992) and magenta developer, or poor contact of the connector terminals.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the magenta developer. Check the continuity of the harness (2BM2854, 2CK2704). Check the insertion of connectors.

• Code: 7004
• Description: Yellow toner feed motor lock
  • The revolution of the yellow toner feed motor does not reach the predetermined revolution within the predetermined period when ASIC (U8) on the engine controller PWB (KP-992) activates the yellow toner feed motor.
• Causes: Defective engine controller PWB (KP-992). Defective yellow developer (Yellow developer PWB [KP-1001]). Defective harness (2BM2854, 2CK2703) between engine controller PWB (KP-992) and yellow developer, or poor contact of the connector terminals.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the yellow developer. Check the continuity of the harness (2BM2854, 2CK2703). Check the insertion of connectors.

• Code: 7101
• Description: Black T/C sensor toner density detection error
  • A normal toner density signal is not entered in the A/D port of CPU (U2) on the engine controller PWB (KP- 992).
• Causes: Defective engine controller PWB (KP-992). Defective black developer (black developer PWB [KP-1003] or black T/C sensor). Defective black developer. (Black toner feed motor does not rotate in the correct revolution.) Defective harness (2CK2708, 2CK2714) between engine controller PWB (KP-992) and black developer, or poor contact of the connector terminals.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the black developer. See page 1- 6-16. Replace the black developer. See page 1- 6-16. Check the continuity of the harness (2CK2708, 2CK2714). Check the insertion of connectors.

• Code: 7102
• Description: Cyan T/C sensor toner density detection error
  • A normal toner density signal is not entered in the A/D port of CPU (U2) on the engine controller PWB (KP- 992).
• Causes: Defective engine controller PWB (KP-992). Defective cyan developer (cyan developer PWB [KP-1003] or cyan T/C sensor). Defective cyan developer. (Cyan toner feed motor does not rotate in the correct revolution.) Defective harness (2CK2702, 2CK2705) between engine controller PWB (KP-992) and cyan developer, or poor contact of the connector terminals.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the cyan developer. See page 1- 6-16. Replace the cyan developer. See page 1- 6-16. Check the continuity of the harness (2CK2702, 2CK2705). Check the insertion of connectors.

• Code: 7103
• Description: Magenta T/C sensor toner density detection error
  • A normal toner density signal is not entered in the A/D port of CPU (U2) on the engine controller PWB (KP- 992).
• Causes: Defective engine controller PWB (KP-992). Defective magenta developer (magenta developer PWB [KP-1003] or magenta T/C sensor). Defective magenta developer. (Magenta toner feed motor does not rotate in the correct revolution.) Defective harness (2BM2854, 2CK2704) between engine controller PWB (KP-992) and magenta developer, or poor contact of the connector terminals
• Remedy: Replace the engine controller PWB (KP- 992). Replace the magenta developer. Replace the magenta developer. Check the continuity of the harness (2BM2854, 2CK2704). Check the insertion of connectors.

• Code: 7104
• Description: Yellow T/C sensor toner density detection error
  • A normal toner density signal is not entered in the A/D port of CPU (U2) on the engine controller PWB (KP- 801).
• Causes: Defective engine controller PWB (KP-992). Defective yellow developer (yellow developer PWB [KP-1001] or yellow T/C sensor). Defective yellow developer. (Yellow toner feed motor does not rotate in the correct revolution.) Defective harness (2BM2854, 2CK2703) between engine controller PWB (KP-992) and yellow developer, or poor contact of the connector terminals.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the yellow developer. See page 1- 6-16. Replace the yellow developer. See page 1- 6-16. Check the continuity of the harness (2BM2854, 2CK2703). Check the insertion of connectors.

• Code: 7301
• Description: Intermediate toner hopper toner feed error
  • Black toner is not fed in the intermediate toner hopper in the black toner developer from the black toner container within the predetermined period.
• Causes: Defective engine controller PWB (KP-992). Defective black toner empty sensor PWB (KP- 895, KP-896). Defective black toner feed clutch. Poor contact of the black toner feed clutch. Defective feed drive PWB (KP- 1011). Defective harness (2CK2702, 2CK2706) between engine controller PWB (KP-992) and black developer, or poor contact of the connector terminals. Defective harness (2CK2707) between engine controller PWB (KP-992) and feed drive PWB (KP- 1011), or poor contact of the connector terminals.
• Remedy: Replace the engine controller PWB (KP- 992). Replace the black toner empty sensor PWB (KP-895, KP-896). Replace the black toner feed clutch. Check the insertion of connectors. Replace the feed drive PWB (KP-1011). Check the continuity of the harness (2CK2702, 2CK2706). Check the insertion of connectors. Check the continuity of the harness (2CK2707). Check the insertion of connectors.