• Code: 942.xx
• Description: Service Yellow TMC Sensor The yellow cartridge toner meter cycle (TMC) switch error. .01—Recoverable .02—Non-recoverable
• Remedy: 1 Remove the toner cartridge, and inspect the lenses on the toner meter cycle (TMC) card. Are the lenses blocked, damaged, or dirty? Repair or replace the TMC card. See “Toner meter cycle (TMC) card removal”. Go to step 2. 2 Turn off the printer, and remove the rear shield. See “Rear shield removal”. Disconnect the cable at the JSP1 connector on the RIP board. Turn the printer on, and measure the voltages below: 1 Ground 2 +3.3 V dc 3 +3.3 V dc 4 +3.3 V dc 5 +3.3 V dc 6 +0.0 V dc Are any of the voltage values incorrect? Replace the RIP board. See “RIP board removal”. Replace the TMC card. See “Toner meter cycle (TMC) card removal”.

• Code: 943.xx
• Description: Service Black TMC Sensor The black cartridge toner meter cycle (TMC) switch error. .01—Recoverable .02—Non-recoverable
• Remedy: 1 Remove the toner cartridge, and inspect the lenses on the toner meter cycle (TMC) card. Are the lenses blocked, damaged, or dirty? Repair or replace the TMC card. See “Toner meter cycle (TMC) card removal”. Go to step 2. 2 Turn off the printer, and remove the rear shield. See “Rear shield removal”. Disconnect the cable at the JSP1 connector on the RIP board. Turn the printer on, and measure the voltages below: 1 Ground 2 +3.3 V dc 3 +3.3 V dc 4 +3.3 V dc 5 +3.3 V dc 6 +0.0 V dc Are any of the voltage values incorrect? Replace the RIP board. See “RIP board removal”. Replace the TMC card. See “Toner meter cycle (TMC) card removal”.

• Code: 948.xx
• Description: Service Engine Card The pel clock check failed.
• Remedy: If this error message persists, replace the RIP board

• Code: 949.xx
• Description: Service Engine Card Delay line calibration failure
• Remedy: If this error message persists, replace the RIP board.

• Code: 950.xx
• Description: Service NVRAM Failure There is a mismatch between controller EEPROM and mirror. • 950.00 through 950.29 codes— Mismatch between controller and mirror. • 950.30 through 950.60 codes— Mismatch between secure and controller.
• Remedy: 1 Have any updates been made to the firmware? Reload the firmware and try again. Go to step 2. Replace the RIP board with a new, and not previously installed RIP board. See “RIP board removal”. 2 Does reloading the firmware correct the problem? Problem resolved. Replace the RIP board with a new, and not previously installed RIP board. See “RIP board removal”.

• Code: 951.xx
• Description: Service NVRAM Failure
• Remedy: Mismatch between controller EEPROM and mirror. • 951.00 through 951.29 codes— Mismatch between controller and mirror. • 951.30 through 951.60—Mismatch between secure and controller.

• Code: 952.xx
• Description: Service NVRAM Failure A recoverable MVRAM Cyclic Redundancy Check (CRC) error occurred. “n” is the offset at which the error occurred.
• Remedy: Performing a POR will clear this error.

• Code: 953.xx
• Description: Service NVRAM Failure
• Remedy: NVRAM chip failure with mirror.