Lexmark E330 Service Manual - Page 79

Cover interlock switch service check

Get Lexmark E330 PDF manuals and user guides View all Lexmark E330 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 79 highlights

4505 Cover interlock switch service check Note: Make sure a print cartridge assembly is installed and the cover closes all the way, engaging the cover open switch lever. FRU Cover interlock switch Action Disconnect the cover interlock cable from the controller card at J13. Verify continuity between cable pin 1 and pin 2 with the door closed but not open. Verify continuity between cable pin 1 and pin 3 with the door open but not closed. • If either fail continuity, replace the cover interlock switch. • If both pass continuity, turn the printer on and verify +5 V dc on pin 2 at J6 on the controller card. • Verify pins 1 and 3 are ground. • If voltage or ground is not present, see "Controller card service check" on page 2-49 for more information. Verify discontinuity between pins 2 and 3 whether the door is open or closed. Replace the cover interlock switch if faulty. Diagnostic information 2-51

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
  • 111
  • 112
  • 113
  • 114
  • 115
  • 116
  • 117
  • 118
  • 119
  • 120
  • 121
  • 122
  • 123
  • 124
  • 125
  • 126
  • 127
  • 128
  • 129
  • 130
  • 131
  • 132
  • 133
  • 134
  • 135
  • 136
  • 137
  • 138
  • 139
  • 140
  • 141
  • 142
  • 143
  • 144
  • 145
  • 146
  • 147
  • 148
  • 149
  • 150
  • 151
  • 152
  • 153
  • 154
  • 155
  • 156
  • 157
  • 158
  • 159
  • 160
  • 161
Diagnostic information
2-51
4505
Cover interlock switch service check
Note:
Make sure a print cartridge assembly is installed and the
cover closes all the way, engaging the cover open switch
lever.
FRU
Action
Cover interlock switch
Disconnect the cover interlock cable
from the controller card at J13.
Verify continuity between cable
pin 1 and pin 2 with the door closed
but not open.
Verify continuity between cable
pin 1 and pin 3 with the door open
but not closed.
•
If either fail continuity, replace the
cover interlock switch.
•
If both pass continuity, turn the
printer on and verify +5 V dc on
pin 2 at J6 on the controller card.
•
Verify pins 1 and 3 are ground.
•
If voltage or ground is not present,
see
“Controller card service
check” on page 2-49
for more
information.
Verify discontinuity between pins 2
and 3 whether the door is open or
closed.
Replace the cover interlock switch if
faulty.