Lexmark Optra E Service Manual - Page 44

Low Voltage Power Supply Service Check, Dead Printer

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

Page 44 highlights

4026-0XX Low Voltage Power Supply Service Check Note: The controller board, HVPS and printhead assembly receive power from the LVPS through the engine board. If the machine is dead, be sure the controller board is correctly seated in the engine board connector. Check and reseat all cables. Dead Printer FRU Action 1 Line Voltage Check the AC line voltage. The voltages should be within the following limits: 100 V ac (90 V ac - 110 V ac) Japan 120 V ac (108 V ac - 132 V ac) U.S. 220/230 V ac (207 V ac - 253 V ac) W.T. 2 LVPS The voltage measures approximately +5 V dc between CN7-4 and ground on the engine board. If incorrect, disconnect CN7 on the engine board and measure the voltage between CN7-4 (+5 V dc) and CN7-3 (+5 V ground). The reading should measure approximately +5 V dc. If +5 V dc is not present, unplug the printer line cord and check fuse F1. If the fuse is open, replace the fuse. If the fuse is not open, replace the LVPS. 3 Engine Board If +5 V dc is present when CN7 is disconnected then disconnect CN2, CN4, CN5, CN9 and CN10 from the engine board. Also disconnect the controller board and remove the ROM SIMM and any optional memory SIMMs. Reconnect CN7 and check for +5 V dc. If incorrect, replace the engine board. 4 Controller Reinstall the controller board. Check for +5 V dc Board at CN7-4. If incorrect, replace the controller board. 2-22

  • 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
4026-0XX
2-22
Low Voltage Power Supply Service Check
Note:
The controller board, HVPS and printhead assembly receive
power from the LVPS through the engine board.
If the machine is dead, be sure the controller board is correctly
seated in the engine board connector.
Check and reseat all cables.
Dead Printer
FRU
Action
1
Line Voltage
Check the AC line voltage. The voltages should
be within the following limits:
100 V ac (90 V ac - 110 V ac) Japan
120 V ac (108 V ac - 132 V ac) U.S.
220/230 V ac (207 V ac - 253 V ac) W.T.
2
LVPS
The voltage measures approximately +5 V dc
between CN7-4 and ground on the engine
board. If incorrect, disconnect CN7 on the
engine board and measure the voltage between
CN7-4 (+5 V dc) and CN7-3 (+5 V ground). The
reading should measure approximately +5 V dc.
If +5 V dc is not present, unplug the printer line
cord and check fuse F1. If the fuse is open,
replace the fuse. If the fuse is not open, replace
the LVPS.
3
Engine Board
If +5 V dc is present when CN7 is disconnected
then disconnect CN2, CN4, CN5, CN9 and
CN10 from the engine board. Also disconnect
the controller board and remove the ROM SIMM
and any optional memory SIMMs. Reconnect
CN7 and check for +5 V dc. If incorrect, replace
the engine board.
4
Controller
Board
Reinstall the controller board. Check for +5 V dc
at CN7-4. If incorrect, replace the controller
board.