MAINTENANCE
[ 1 - 3 ]
Wiring bundle bands
(bar lock ties)
COM
N.C.
N.O.
N.C.
N.O.
COM
Electrical system work
• After removing wire bundles, fasten them with
wire bundle bands (bar lock ties) so that they will
not sag.
• When installing parts, be careful to avoid
pinching or damaging the wire bundles.
• If a fuse blows, always replace it with one with
the specified capacity.
• Using a fuse with a larger capacity can not only
damage parts, but may cause fires.
• Be careful not to drop image scanners, thermal
print heads, and other sensors as they can be
easily damaged.
Interrupt types
Reflective types
Transmittive types
Actuator types
Receiver
Sensor types
• Photo-electric sensors may be broadly divided
into the following four types: interrupt types (U-
shaped), actuator types, reflective types, and
transmittive types.
• Magnetic sensors use Hall ICs, which react to
the magnetic force in magnets.
• Always turn off the power before plugging or
unplugging sensor connectors.
Switch types
• Microswitches may be divided between normally
open (N.O.) types and normally closed (N.C.)
types.
With an N.O. connection, an internal contact is
connected when the switch actuator is pressed.
With an N.C. connection, an internal contact is
disconnected when the switch actuator is
pressed.
Note
The RN25 Series and RN20/21 Series are comprised of many gears. When inspecting or replacing
parts, apply grease to the gears. If they are not properly greased, the gears may make abnormal
sounds, and malfunctions or mechanical problems may occur.
Sender
Receiver
Sender
Sender
Sender
Receiver
Receiver
0102
0103
0104
Summary of Contents for RP-255
Page 22: ...MAINTENANCE 1 9 NOTE...
Page 27: ...MAINTENANCE 1 14 MEMO...
Page 45: ...MACHINE SUMMARY 2 8 Memo...
Page 50: ...MAIN DRIVE SECTION 3 5 Memo...
Page 83: ...FIRST PAPER FEED SECTION 4 26 Memo...
Page 108: ...PRESS SECTION 6 9 Memo...
Page 111: ...PRESS SECTION 6 12 Memo...
Page 169: ...PRINT DRUM SECTION 8 30 Memo...
Page 197: ...FB ORIGINAL SCANNING SECTION 11 2 Memo...
Page 213: ...FB ORIGINAL SCANNING SECTION 12 2 Memo...
Page 222: ...FB ORIGINAL SCANNING SECTION 12 11 Memo...
Page 271: ...AF SCANNING SECTION RN20 21 Series 14 18 Memo...
Page 295: ...MASTER MAKING SECTION 15 24...
Page 303: ...TIMING CHARTS 16 8 Memo...
Page 399: ...TEST MODE 18 32 Memo...
Page 405: ...MISCELLANEOUS PRECAUTIONS 19 6 Memo...
Page 423: ...ELECTRICAL DIAGRAMS RN25 Series 20 18 Memo...
Page 439: ...RISO Inc Technical Services Support US RISO COM ELECTRICAL DIAGRAMS RN20 21 Series 21 16 Memo...
Page 441: ...ELECTRICAL COMPONENTS 22 2 O A B C D E F G H I J K L M N 2201 2202 1 Motors...
Page 443: ...ELECTRICAL COMPONENTS 22 4 A B C D E 2203 2204 2 Fans Solenoids Electromagnetic Clutch...