Figure 6-39. Removing and replacing the drum drive assemblies (1 of 4) .......................215
Figure 6-40. Removing and replacing the drum drive assemblies (2 of 4) .......................215
Figure 6-41. Removing and replacing the drum drive assemblies (3 of 4) .......................216
Figure 6-42. Removing and replacing the drum drive assemblies (4 of 4) .......................216
Figure 6-43. Reinstalling the developing disengaging rod (1 of 2) ....................................217
Figure 6-44. Reinstalling the developing disengaging rod (2 of 2) ....................................217
Figure 6-45. Removing and replacing the e-label memory controller PCB .......................218
Figure 6-46. Removing and replacing the DC controller PCB ...........................................219
Figure 6-47. Removing and replacing the cassette paper size detection switch ..............220
Figure 6-48. Removing and replacing the power supply fan (1 of 2) ................................221
Figure 6-49. Removing and replacing the power supply fan (2 of 2) ................................221
Figure 6-50. Removing and replacing the formatter (HP Color LaserJet 5550) ...............223
Figure 6-51. Removing and replacing the formatter (HP Color LaserJet 5500) ...............223
Figure 6-52. Removing and replacing the low-voltage power supply, left side of
printer (1 of 4) ................................................................................................224
Figure 6-53. Removing and replacing the low-voltage power supply, rear of printer
(2 of 4) ...........................................................................................................224
Figure 6-54. Removing and replacing the low-voltage power supply, right side of
printer (3 of 4) ................................................................................................225
Figure 6-55. Removing and replacing the low-voltage power supply (4 of 4) ...................225
Figure 6-56. Removing and replacing the formatter case (1 of 2) ....................................226
Figure 6-57. Removing and replacing the formatter case (2 of 2) ....................................227
Figure 6-58. Removing and replacing the laser/scanner units (1 of 8) .............................228
Figure 6-59. Removing and replacing the laser/scanner units (2 of 8) .............................228
Figure 6-60. Removing and replacing the laser/scanner units (3 of 8) .............................229
Figure 6-61. Removing and replacing the laser/scanner units (4 of 8) .............................229
Figure 6-62. Removing and replacing the laser/scanner units (5 of 8) .............................230
Figure 6-63. Removing and replacing the laser/scanner units (6 of 8) .............................230
Figure 6-64. Removing and replacing the laser/scanner units (7 of 8) .............................231
Figure 6-65. Removing and replacing the laser/scanner units (8 of 8) .............................232
Figure 6-66. Removing and replacing the high-voltage power supply PCB .....................233
Figure 6-67. Aligning the high-voltage power supply PCB ................................................234
Figure 6-68. Removing and replacing the toner level detection PCB ...............................235
Figure 6-69. Removing and replacing the high-voltage contact blocks (cyan
indicated) .......................................................................................................236
Figure 6-70. Removing and replacing the door switch ......................................................237
Figure 6-71. Removing the screw in the discharging PCB.................................................238
Figure 6-72. Removing and replacing the discharging PCB .............................................239
Figure 6-73. Removing and replacing the fuser power supply PCB (1 of 2) .....................240
Figure 6-74. Removing and replacing the fuser power supply PCB (2 of 2) .....................240
Figure 6-75. Removing and replacing the fuser drive unit (1 of 4) ....................................241
Figure 6-76. Removing and replacing the fuser drive unit (2 of 3) ....................................242
Figure 6-77. Removing and replacing the fuser drive unit (3 of 4) ....................................243
Figure 6-78. Removing and replacing the fuser drive unit (4 of 4) ....................................243
Figure 6-79. Removing and replacing the fuser paper sensor ..........................................244
Figure 6-80. Removing and replacing the fuser delivery sensor and output bin full
sensor (1 of 2) ...............................................................................................245
Figure 6-81. Removing and replacing the fuser delivery sensor and output bin full
sensor (2 of 2)................................................................................................245
Figure 6-82. Removing and replacing the static discharge comb .....................................246
Figure 6-83. Removing and replacing the static discharge eliminator unit (HP
Color LaserJet 5550 models only) ................................................................246
Figure 6-84. Removing and replacing the formatter fan ....................................................247
Figure 6-85. Removing and replacing the cartridge fan ....................................................248
Figure 6-86. Removing and replacing the 500-sheet paper feeder left cover (1 of 2) ......249
Figure 6-87. Removing and replacing the 500-sheet paper feeder left cover (2 of 2) ......250
ENWW xvii
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