HP Color LaserJet 9500 Service Manual - Page 451

ENWW Table 77. Numerical error messages for the HP LaserJet 9500 Series printer (continued) Message Explanation Recommended action 54.XX PRINTER ERROR z The printer 54 errors indicate sensor z 54.01 procedure: abnormalities. Sensor abnormalities 1 are caused by failed or blocked sensors, or sensors reporting results outside an expected range. Check that all of the environmental requirements are met. 2 Turn the printer off, and then turn Note the printer on again. Some 54 errors do not stop the 3 printing process, and are only noted in the event log but not on the control panel. Check connector K3013 on the temperature/humidity sensor, intermediate connector J3085, and connector J807 on the XX description 00 = ITB misalignment (check the T driver PCA. 4 Replace the temperature/humidity event log for a 54.27 error and cycle power to recover) sensor. See "Temperature and humidity sensor" on page 280. 01 = environmental temperature 5 sensor output is abnormal (appears only in the event log) 05 = OHT sensor failure (appears only in the event log) 6 06 = density sensor failure Replace the T driver PCA. See "Tcrg (print cartridge) drive assembly" on page 296. Replace the DC controller PCA. See"DC controller" on page 300. Note z For errors 11 through 14, the density is set to the highest or lowest possible value. This usually occurs 1 because the calibration patches are not on the ITB correctly. These errors appear only in the event log. 2 11 = yellow density sensor (the engine detects abnormality in the yellow density control and the engine default is used) 3 12 = magenta density sensor (the engine detects abnormality in the magenta density control and the engine default is used) 13 = cyan density sensor (the engine detects abnormality in the cyan density control and the engine default is used) 14 = black density sensor (the engine detects abnormality in the black density control and the engine default is used) 4 Note Errors 15 through 18 only appear in the event log and printing continues. 54.06, 54.11, 54.12, 54.13, 54.14, and 54.30 procedure: Check the cleaning blade and ITB for evidence of a cleaning blade failure (which might cause the density calibration to fail). Check the right door actuated cleaning mechanism for correct functionality. Select CALIBRATE NOW and PRINT STOP TEST on the control panel to check correct formations of the calibration swatches on the ITB. If the swatches are light or missing a color, check the T1 components, image drum, and print cartridge for the missing or light color. Also, check for malformed or too light swatches, stray toner from cleaning failures, and ITB damage. Check connector J3014 at the density sensor, intermediate connector J3072 and J3080, and connector J808 on the T driver PCA. 15 = yellow CPR sensor (the engine 5 cannot detect the yellow CPR pattern on the ITB) 16 = magenta CPR sensor (the engine cannot detect the magenta 6 CPR pattern on the ITB) Replace the density/color registration sensor assembly. See "Density and registration sensor assembly" on page 262. Replace the T driver PCA. See "Tcrg (print cartridge) drive assembly" on page 296. 7 Replace the DC controller PCA. See "DC controller" on page 300. Chapter 7 Troubleshooting 449