ELECTRICAL COMPONENT DESCRIPTION
B543 4
SM
1.4 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name
Function
Index
No.
Motors
M1
LCT
Drives all rollers.
3
M2
Lift
Drives the paper tray up or down.
12
Sensors
S1
Paper End
Informs the copier when the paper has run
out.
15
S2
Relay
Detects the copy paper coming to the relay
roller and checks for misfeeds.
14
S3
Lift
Detects when the paper is at the correct
paper feed height.
16
S4
Lower Limit
Detects when the tray is completely lowered,
to stop the LCT motor.
9
S5
Paper Height 1 Detects the paper height.
4
S6
Paper Height 2 Detects the paper height.
5
S7
Paper Height 3 Detects the paper height.
6
S8
LCT Set
Detects whether the LCT is correctly set or
not.
10
S9
Side Fence
Position
Detects when the side fence is set at the A4
size position.
8
Switches
SW1
Tray Cover
Stops the LCT lift motor when the tray cover
is opened.
11
SW2
Down
Lowers the LCT bottom plate if pressed by
the user.
13
Solenoids
SOL1
Pick-up
Controls up-down movement of the pick-up
roller.
17
Magnetic Clutches
MC1
Paper Feed
Drives the paper feed roller.
2
MC2
Relay
Drives the relay roller.
1
PCBs
PCB1
Main
Controls the LCT and communicates with the
copier.
7
Summary of Contents for B079
Page 1: ...B079 B082 SERVICE MANUAL 001634MIU RICOH GROUP COMPANIES ...
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Page 3: ...B079 B082 SERVICE MANUAL RICOH GROUP COMPANIES ...
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Page 5: ...B079 B082 SERVICE MANUAL 001634MIU ...
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Page 29: ...INSTALLATION ...
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Page 101: ...PREVENTIVE MAINTENANCE ...
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Page 107: ...REPLACEMENT AND ADJUSTMENT ...
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Page 196: ......
Page 197: ...TROUBLESHOOTING ...
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Page 221: ...Trouble shooting SERVICE CALL CONDITIONS SM 4 23 B079 B082 INTENTIONALLY LEFT BLANK ...
Page 225: ...SERVICE TABLES ...
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Page 331: ...DETAILED SECTION DESCRIPTIONS ...
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Page 436: ......
Page 437: ...SPECIFICATIONS ...
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Page 449: ...BOOKLET FINISHER B546 ...
Page 450: ......
Page 497: ...AUTO REVERSE DOCUMENT FEEDER B541 ...
Page 498: ......
Page 525: ...LARGE CAPACITY TRAY B543 ...
Page 526: ......
Page 528: ......
Page 543: ...PAPER TRAY UNIT B542 ...
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Page 546: ......
Page 565: ...1 BIN TRAY B544 ...
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Page 568: ......
Page 576: ......
Page 577: ...1000 SHEET FINISHER B408 ...
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Page 580: ......
Page 605: ...TWO TRAY FINISHER B545 ...
Page 606: ......
Page 643: ...BRIDGE UNIT B538 ...
Page 651: ...PRINTER OPTION B548 ...
Page 652: ......
Page 703: ...FAX OPTION B547 ...
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Page 851: ...TECHNICAL SERVICE BULLETINS ...
Page 853: ...BRIDGE UNIT B538 ...
Page 908: ...Trouble shooting SERVICE CALL CONDITIONS SM 4 23 B079 B082 INTENTIONALLY LEFT BLANK ...
Page 941: ...FIRMWARE HISTORY ...