Ricoh B230 Service Manual
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Original Feed Drive SM 9 B789 B789 3. Pick-up solenoid [B] ( x 2, x 1) 1.4.3 INVERTER SOLENOID 1. Rear cover (see Rear Cover) 2. Harness guide (see Pick-up Solenoid) 3. Inverter solenoid [A] ( x 2, x 1, x 1, gear x 1, gear cover x 1)
Original Feed Drive B789 10 SM 1.4.4 FEED CLUTCH 1. Rear cover (see Rear Cover) 2. Harness guide (see Pick-up Solenoid) 3. Bracket [A] ( x 2, x 3, x 1, bushing x 1, spring x 1) 4. Slide the bracket. 5. Feed clutch [B] ( x 1)
Original Feed Drive SM 11 B789 B789 1.4.5 TRANSPORT MOTOR 1. Rear cover (see Rear Cover) 2. Harness guide (see Pick-up Solenoid) 3. Left cover sensor with bracket [A] ( x 1, x 1) 4. Transport motor with bracket [B] ( x 2, x 1, spring x 1) 5. Transport motor [C] ( x 2)
Component Layout B789 12 SM 2. DETAILED DESCRIPTIONS 2.1 COMPONENT LAYOUT 2.1.1 MECHANICAL COMPONENT LAYOUT 1. Separation Roller 2. Paper Feed Belt 3. Pick-up Roller 4. Original Trailing Edge Sensor 5. Original Tray 6. Original Length Sensor 1 7. Original Length Sensor 2 8. Original Length Sensor 3 9. Inverter Roller 10. Junction Gate 11. Exit Roller 12. Original Exit Sensor 13. Transport Roller 14. Registration Roller 15. Registration Sensor 16. Skew Correction Roller 17. Skew Correction Sensor
Component Layout SM 13 B789 B789 2.1.2 ELECTRICAL COMPONENT LAYOUT Sensors 1. Original Width Sensor 2. Skew Correction Sensor 3. Registration Sensor 4. Cover Sensor 5. Original Set Sensor 6. Exit Sensor 7. Original Sensor 8. Original Length Sensor 9. DF Position Sensor
Component Layout B789 14 SM Drive Components 1. Transport Motor 2. Feed Clutch 3. Pick-up Solenoid 4. Inverter Solenoid 5. Feed Motor 6. Main Board Electrical Component Descriptions Symbol Name Function Index No. Motors M1 Feed Drives the feed belt, separation, pick-up, and reverse table rollers. 5 M2 Transport Drives the transport and exit rollers 1 Sensors S9 DF Position Detects whether the DF is lifted or not. 9 S5 Skew Correction Detects the leading edge of the original to turn off the DF feed and transport motors. 2 S8 Registration Detects the original exposure timing, and checks for original misfeeds. 3 S10 Cover Sensor Detects whether the feed-in cover is opened or not. 4
Component Layout SM 15 B789 B789 S1 Original Width Sensor - S Detects the original width - S. 1 S2 Original Width Sensor - M Detects the original width - M. 1 S3 Original Width Sensor - L Detects the original width - L. 1 S4 Original Width Sensor - LL Detects the original width - LL. 1 S14 Original Length - S Detects the original length - S. 8 S13 Original Length - M Detects the original length - M. 8 S12 Original Length - L Detects the original length - L. 8 S7 Original Set Detects if an original is on the feed table. 5 S6 Original Exit Detects the leading edge of the original to turn on the junction gate solenoid and checks for original misfeeds. Detects the trailing edge of the original to turn off the transport and feed motor and junction gate solenoid. In single-sided mode, used to detect original misfeeds. 6 S11 Original Detects the trailing edge of the last original to stop copy paper feed and to turn off the transport motor, and checks for original misfeeds. 7 Solenoids SOL1 Pick-up Controls the up-down movement of the original table. 3 SOL2 Stamp Energizes the stamper to mark the original. SOL3 Junction Gate Opens and closes the junction gate. 4 Magnetic Clutches MC1 Feed Drives the feed belt, separation, pick-up, and skew correction rollers 5
Component Layout B789 16 SM PCBs PCB1 Main Interfaces the sensor signals with the copier, and transfers the magnetic clutch, solenoid and motor drive signals from the copier. 6 2.1.3 DRIVE LAYOUT 1. Feed Motor 2. Pick-up Roller 3. Separation Roller 4. Feed Belt 5. Skew Correction Roller 6. Feed Clutch 7. Transport Motor 8. Exit Roller 9. Registration Roller ƒ Feed Motor: Drives the feed belt, separation, pick-up, and skew correction rollers. ƒ Transport Motor: Drives the registration and exit rollers.
Basic Operation SM 17 B789 B789 2.2 BASIC OPERATION 2.2.1 ORIGINAL SET AND SIZE DETECTION The original set sensor [A] detects if the original is set or not. The original sensor [B] detects if the original is on the original tray or not (this lets the machine know as early as possible, whether there is another original on the tray). The original size detection mechanism consists of the four original width sensors ([F]: Width Sensor S, [G]: Width Sensor M, [H] Width Sensor L, [I]: Width Sensor LL) and three original length sensors ([C]: Length Sensor S, [D]: Length Sensor M, [E]: Length Sensor L). Based on the combined output of the length sensors and the width sensors, the machine can detect the size of the original. This integrated detection mechanism is detailed in the table below. Width Sensor Length Sensor Area Size S M L LL S M L LT A/B A3/SEF (297 x 420) ON ON ON ON ON ON ON O O B4/SEF (257 x 364) ON ON - - ON ON ON - O A4/SEF (210 x 297) ON - - - ON ON - O O A4/LEF (297 x 210) ON ON ON ON - - - O O B5/SEF (182 x 257) - - - - ON - - - O B5/LEF (257 x 182) ON ON - - - - - - O A5/SEF (148 x 210) - - - - - - - - O A5/LEF (210 x 148) ON - - - - - - - O 11 x 17/SEF (DLT) ON ON ON - ON ON ON O1 O5
Basic Operation B789 18 SM 11 x 15/SEF ON ON ON - ON ON ON 1 - 10 x 14/SEF ON ON - - ON ON ON O - 8.5 x 14/SEF (LG) ON - - - ON ON ON O2 - 8.5 x 13/SEF (F4) ON - - - ON ON ON 2 O 8.25 x 13/SEF ON ON ON ON - - 8 x 13/SEF (F) ON - - - ON ON ON - - 8.5 x 11/SEF (LT) ON - - - ON - - O3 O6 8.5 x 11/LEF (LT) ON ON ON - - - - O4 O7 7.25 x 10.5/SEF (US EXE) ON - - - ON - - O - 10.5 x 7.25/SEF (US EXE) ON ON ON - - - - 4 - 10 x 8/SEF ON - - - ON - - 3 - 5.5 x 8.5/SEF (HLT) - - - - - - - O - 5.5 x 8.5/LEF (HLT) ON - - - - - - O - 267 mm x 390 mm ON ON ON - ON ON ON - 5 195 mm x 267 mm ON - - - ON - - - 6 267 mm x 195 mm ON ON ON - - - - - 7 Symbol O: Yes (Default), : Yes (Can select this with SP mode), ON: Paper present, LT: North America, A/B: Europe, Asia ƒ For O/ mark, which has superscripted number, it is possible to change the original detection size with SP6-016. For example, instead of LT (O 3), the machine can be set up to detect 10” x 8” ( 3). ƒ The F size can be selected with SP5-126. The default is 8.5 x 13 ƒ The machine cannot detect more than one size of original in the same job. 2.2.2 MIXED ORIGINAL SIZE MODE This section explains what happens when the user selects mixed original size mode. Because this ARDF is a sheet-through document feeder, the method for original document width detection is the same as when the originals are the same size, but the document length detection method is different. Therefore, the scanning speed is slightly slower.