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LASER EXPOSURE
B039/B040/B043
6-32
SM
6.6.3 LD SAFETY SWITCH
To ensure technician and user safety and to prevent the laser beam from
inadvertently switching on during servicing, there are safety switches at the front
and right covers.
When the front cover or the right cover is opened, the power supply to the laser
diode is interrupted.
The switches are installed on the +24V line coming from the power supply unit,
then the +5VLD is generated from the +24V supply after it goes through the
interlock switches.
LDD:
L D D D r i v e B o a r d
Front/Right Cover
Safety Switches
IOB
P S U
BiCU
+ 5 V L D
+ 2 4 V
Optical Path
P D
L D
LD Driver IC
V C C
O P C
D r u m
Laser
B e a m
R E G
B039D906.WMF
Содержание LD013
Страница 1: ...001129MIU SERVICE MANUAL B039 B040 B043 B120 RICOH GROUP COMPANIES...
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Страница 3: ...SERVICE MANUAL B039 B040 B043 B120 RICOH GROUP COMPANIES...
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Страница 5: ...B039 B040 B043 B120 SERVICE MANUAL 001129MIU...
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Страница 31: ...INSTALLATION...
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Страница 61: ...PREVENTIVE MAINTENANCE...
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Страница 67: ...REPLACEMENT AND ADJUSTMENT...
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Страница 125: ...TROUBLESHOOTING...
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Страница 140: ...SERVICE TABLES...
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Страница 192: ...DETAILED SECTION DESCRIPTIONS...
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Страница 270: ...AUTO REVERSE DOCUMENT FEEDER B379...
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Страница 300: ...DOCUMENT FEEDER B387...
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Страница 324: ...PAPER TRAY UNIT B384...
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Страница 344: ...PAPER TRAY UNIT B385...
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Страница 348: ...Paper Tray Unit B385 DRIVE LAYOUT SM 10 3 B385 1 3 DRIVE LAYOUT 1 Paper Feed Motor 2 Paper Feed Roller B385V103 WMF 1 2...
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Страница 362: ...SPECIFICATIONS...
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Страница 373: ...B120 RLA only...
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Страница 379: ...FAX UNIT B404...
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Страница 383: ...INSTALLATION...
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Страница 393: ...PREVENTIVE MAINTENANCE...
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Страница 397: ...REMOVAL AND REPLACEMENT...
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Страница 401: ...Fax Unit B404 SPEAKER SM 3 3 B404 3 4 SPEAKER A Fax unit 2 2 B Speaker 2 1 B404R500 WMF B404R501 WMF A B...
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Страница 403: ...TROUBLESHOOTING...
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Страница 416: ...SERVICE TABLES...
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Страница 490: ...DETAILED SECTION DESCRIPTIONS...
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Страница 498: ...SPECIFICATIONS...
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Страница 510: ...FIRMWARE HISTORY...
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