Brother International HL-720 Service Manual - Page 49

Ch3 Disassembly, 1. Safety Precautions, TAPTITE, BIND or CUP B

Get Brother International HL-720 - B/W Laser Printer PDF manuals and user guides View all Brother International HL-720 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 49 highlights

CHAPTERIII To prevent the creation of secondary problems by mishandling, be careful about the following precautions during maintenance work. (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. (2) Be careful not to lose screws, washers, or other parts removed. (3) Be sure to apply grease to the gears and applicable positions specified in this chapter. (4) When using soldering irons or other heat-generating tools, take care not to damage the resin parts such as wires, PCBs, and covers. (5) Before handing the PCBs, touch a metal portion of the equipment to discharge the static electricity charged in your body, or the electronic parts or components may be damaged. (6) When transporting PCBs, be sure to wrap them in conductive sheet such as aluminum foil. (7) Be sure to replace self-tapping screws correctly, if removed. Unless otherwise specified, tighten screws to the following torque values. TAPTITE, BIND or CUP B M3 : 6kgf • cm M4 : 9kgf • cm TAPTITE, BIND S M3 : 9kgf • cm SCREW M3 : 7kgf • cm M4 : 10kgf • cm (8) When connecting or disconnecting cable connectors, hold the connector bodies, but not the cables. If the connector has a lock, release the connector lock first to unlock it. (9) After a repair, check not only the repaired portion but also the connectors, or check if other related portions are functioning properly before doing operation checks.

  • 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
CHAPTERIII
±²³
±²³
±²³
±²³´³³µ
´³³µ
´³³µ
´³³µ¶·
¶·
¶·
¶·¸¹
¸¹
¸¹
¸¹º´»
´»
´»
´»±º
±º
±º
±º¼µ´³³µ
´³³µ
´³³µ
´³³µ¶·
¶·
¶·
¶·¸
±±²³
²³
²³
²³
´µ¶·¸¹±º»·¼µ½¸¾¿À
´µ¶·¸¹±º»·¼µ½¸¾¿À
´µ¶·¸¹±º»·¼µ½¸¾¿À
´µ¶·¸¹±º»·¼µ½¸¾¿À´
To prevent the creation of secondary problems by mishandling, be careful about the
following precautions during maintenance work.
(1)
Always turn off the power switch and unplug the power cord from the power outlet
before accessing any parts inside the printer.
(2)
Be careful not to lose screws, washers, or other parts removed.
(3)
Be sure to apply grease to the gears and applicable positions specified in this chapter.
(4)
When using soldering irons or other heat-generating tools, take care not to damage
the resin parts such as wires, PCBs, and covers.
(5)
Before handing the PCBs, touch a metal portion of the equipment to discharge the
static electricity charged in your body, or the electronic parts or components may be
damaged.
(6)
When transporting PCBs, be sure to wrap them in conductive sheet such as aluminum
foil.
(7)
Be sure to replace self-tapping
screws correctly, if removed. Unless otherwise
specified, tighten screws to the following torque values.
TAPTITE, BIND or CUP B
M3 : 6kgf • cm
M4 : 9kgf • cm
TAPTITE, BIND S
M3 : 9kgf • cm
SCREW
M3 : 7kgf • cm
M4 : 10kgf • cm
(8)
When connecting or disconnecting cable connectors, hold the connector bodies, but
not the cables. If the connector has a lock, release the connector lock first to unlock it.
(9)
After a repair, check not only the repaired portion but also the connectors, or check if
other related portions are functioning properly before doing operation checks.