Ricoh FT3013 S able of Contents

Table of Contents

1. OVERALL MACHINE INFORMATION

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 1-1

2. COPY PROCES SE S AROUND THE DRUM . . . . . . . . . 1-4

3. COPY PROCESS CONTROL . . . . . . . . . . . . . . . 1-6

4. MECHANICAL COMPONENT LAYOUT . . . . . . . . . . 1-7

5. ELECTRICAL COMPONENT LAYOUT . . . . . . . . . . . 1-8

6. ELECTRICAL COMPONENT DE SCRI PTI ONS . . . . . . . . 1-9

7. DRIVE LAYOUT . . . . . . . . . . . . . . . . . . . . 1-12

8. POWER DISTRIBUTION . . . . . . . . . . . . . . . . 1-14

2. DETAILED SECITON DES CRI PTIONS

1. DRUM . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.1 DRUM CHARACTERISTICS . . . . . . . . . . . . . 2-1

1.2 DRUM UNIT . . . . . . . . . . . . . . . . . . . . 2-2

2. DRUM CHARGE . . . . . . . . . . . . . . . . . . . . 2-3

2.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-3

2.2 CHARGE CORONA WIRE CLEANER MECHANISM . . . . 2-4

2.3 CHARGE CORONA CIRCUIT . . . . . . . . . . . . . 2-5

2.4 GRID VOLTAGE CORRECTION . . . . . . . . . . . . 2-6

2.4.1 Drum Residual Voltage Correction (V r correction) . . . . 2-6

2.4.2 Drum Wear Correction . . . . . . . . . . . . . . 2-7

2.5 GRID VOLTAGE FOR IMAGE DENSITY CONTROL . . . . 2-7

2.5.1 Standard Imag e Den sity Grid Voltage . . . . . . . . 2-7

2.5.2 Drum Residual Voltage (Vr) Correction Factor . . . . . 2-8

2.5.3 Auto Image Density Level Fa ctor (SP34) . . . . . . . 2-8

2.6 GRID VOLTAGE FOR TONER DENSITY DETECTION AND

RESIDUAL VOL TAGE (Vr) DETECTION . . . . . . . . . 2-9

3. OPTICS . . . . . . . . . . . . . . . . . . . . . . . 2-10

3.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-10

3.2 SCANNER DRIVE . . . . . . . . . . . . . . . . . . 2-12

3.2.1 1st and 2nd Scann er Drive Mech an ism . . . . . . . . 2-12

3.3 LENS DRIVE (A152 copier on ly) . . . . . . . . . . . . 2-13

3.3.1 Lens Drive . . . . . . . . . . . . . . . . . . . 2-13

3.3.2 Lens Posit ion ing . . . . . . . . . . . . . . . . . 2-14

3.4 4TH/5TH MIRROR DRIVE (A152 copie r o nly) . . . . . . . 2-15

3.4.1 Drive . . . . . . . . . . . . . . . . . . . . . 2-15

3.4.2 Position ing . . . . . . . . . . . . . . . . . . . 2-15

3.5 AUTOMATIC IMAGE DE NSI TY SENSING . . . . . . . . 2-16

3.6 EXPOSURE LAMP VO LTAGE CONTROL . . . . . . . . 2-17

3.6.1 Base Lamp Voltage In Manual Image Density Mo de . . . 2-17

3.6.2 Base Lamp Voltage In Auto Image Density Mode . . . . 2-17

3.6.3 VL Correction Factor . . . . . . . . . . . . . . . 2-18

3.6.4 Reproduction Rat io Corre ction Factor (A152 copier only) . 2-18

3.7 EXPOSURE LAMP CONTRO L CIRCUIT . . . . . . . . . 2-19

4. ERASE . . . . . . . . . . . . . . . . . . . . . . . 2-20

4.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-20

4.1.1 Lead Edge Erase . . . . . . . . . . . . . . . . 2-21

4.1.2 Side Erase . . . . . . . . . . . . . . . . . . . 2-21

4.1.3 T railing Edge Erase . . . . . . . . . . . . . . . 2-23

5. DEVELOPMENT . . . . . . . . . . . . . . . . . . . . 2-24

5.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-24

5.2 DRIVE MECHANISM . . . . . . . . . . . . . . . . 2-25

5.3 CROSS-MIXING . . . . . . . . . . . . . . . . . . 2-26

5.4 DEVELOPMENT BIAS FOR IMA GE DENSITY CONTROL . . 2-27

5.4.1 Base Bias Voltage Factor In Manual Image Density Mode 2-28

5.4.2 Base Bias Voltage Factor In Automatic Image Density Mode 2-28

5.4.3 Image Bias Voltage Adjustment Factor . . . . . . . . 2-29

5.4.4 Drum Residual Voltage (Vr) Correction Factor . . . . . 2-30

5.5 DEVELOPMENT BIAS CIRCUIT . . . . . . . . . . . . 2-31

6. TONER DENSITY DETECTION AND TONER SUPPLY . . . . 2-32

6.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-32

6.2 ID SENSOR FUNCTION . . . . . . . . . . . . . . . 2-33

6.2.1 Detect Supply Mode . . . . . . . . . . . . . . . 2-33

6.2.2 Fixed Supply Mode . . . . . . . . . . . . . . . 2-34

6.3 ABNORMAL CONDITI ON IN T ONE R DENSITY DETECTION 2-34

6.4 DEVELOPMENT BIAS VO LTAGE FOR TONER DENSITY

DETECTION . . . . . . . . . . . . . . . . . . . . 2-35

6.5 TONER SUPPLY AND AGITATOR DRIVE ME CHANI SM . . . 2-36

6.6 TONER SUPPLY AMOUNT . . . . . . . . . . . . . . 2-37

6.6.1 Detect Supply Mode (SP30 = 0) . . . . . . . . . . 2-37

6.6.2 Fixed Supply Mode (S P3 0 = 1) . . . . . . . . . . . 2-39

6.7 TONER END CONDI TION . . . . . . . . . . . . . . 2-40

6.7.1 Near Toner En d Co nd ition . . . . . . . . . . . . . 2-40

6.7.2 Toner End Condition . . . . . . . . . . . . . . . 2-40

6.7.3 Toner End Reco very . . . . . . . . . . . . . . . 2-41

7. IMAGE TRANSFER AND PAPER SEPARATION . . . . . . . 2-42

7.1 IMAGE TRANSFER . . . . . . . . . . . . . . . . . 2-42

7.2 PAPER SEPARATION . . . . . . . . . . . . . . . . 2-42

7.3 TRANSFER/SEPARATION CORONA CIRCUIT . . . . . . 2-43

8. DRUM CLEANING . . . . . . . . . . . . . . . . . . . 2-44

8.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-44

8.2 DRIVE MECHANISM . . . . . . . . . . . . . . . . 2-45

8.3 USED TONE R OV ERFLOW DETECTION . . . . . . . . 2-46

9. PAPER FEED AND REGISTRATION . . . . . . . . . . . . 2-47

9.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-47

9.2 PAPER LIFT MECHANISM . . . . . . . . . . . . . . 2-48

9.3 PAPER LENGTH DETECTION (Paper Feed Station) . . . . 2-49

9.4 PAPER FEED DRIVE MECHANISM . . . . . . . . . . 2-50

9.5 BY-PASS FEED TABLE (By-pass Auto Feed Mechanism) . . 2-51

9.6 PAPER REGISTRATION . . . . . . . . . . . . . . . 2-52

9.7 PAPER FEED AND MISFEED DETE CTION TIMING . . . . 2-53

10. IMAGE FUSING . . . . . . . . . . . . . . . . . . . 2-54

10.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-54

10.2 FUSING DRIVE MECHANIS M A ND CO VE R S AFE TY SWITCH 2-55

10.3 FUSING LAMP CONTRO L CIRCUIT . . . . . . . . . . 2-56

10.3.1 Phase Control Mod e . . . . . . . . . . . . . . 2-57

10.3.2 Overheat Protection . . . . . . . . . . . . . . . 2-57

10.4 FUSING LAMP CONTRO L . . . . . . . . . . . . . . 2-58

10.5 ENERGY SAVER FUNCTION . . . . . . . . . . . . . 2-59

3. INSTALLA TION

1. INSTALLA TION REQUIREMENTS . . . . . . . . . . . . . 3-1

1.1 ENVIRONMENT . . . . . . . . . . . . . . . . . . 3-1

1.2 MACHINE LEVEL . . . . . . . . . . . . . . . . . . 3-1

1.3 MINIMUM SPACE REQUIREMENTS . . . . . . . . . . 3-2

1.4 POWER REQUIREMENTS . . . . . . . . . . . . . . 3-2

2. INSTALLA TION PROCEDURE . . . . . . . . . . . . . . 3-3

2.1 ACCES SO RY CHECK . . . . . . . . . . . . . . . . 3-3

2.2 COPIER INSTALLATION PROCEDURE . . . . . . . . 3-4

2.3 KEY COUNTER HOLDER INSTALLATION (OPTION) . . . . 3-10

4. SERVICE TABLES

1. SERVICE REMARKS . . . . . . . . . . . . . . . . . . 4-1

1.1 GENERAL CAUTION . . . . . . . . . . . . . . . . 4-1

1.2 DRUM . . . . . . . . . . . . . . . . . . . . . . 4-1

1.3 CHARGE CORONA . . . . . . . . . . . . . . . . . 4-2

1.4 OPTICS . . . . . . . . . . . . . . . . . . . . . . 4-3

1.5 DEVELOPMENT . . . . . . . . . . . . . . . . . . 4-4

1.6 TONER SUPPLY . . . . . . . . . . . . . . . . . . 4-4

1.7 TRANSFER AND SEPARATIO N . . . . . . . . . . . . 4-5

1.8 CLEANING UNIT . . . . . . . . . . . . . . . . . . 4-5

1.9 FUSING UNIT . . . . . . . . . . . . . . . . . . . 4-5

1.10 PAPER FEED . . . . . . . . . . . . . . . . . . . 4-6

1.11 DOCUMENT FEEDER . . . . . . . . . . . . . . . 4-6

1.12 OTHERS . . . . . . . . . . . . . . . . . . . . . 4-6

2. SERVICE PROGRAM MODE . . . . . . . . . . . . . . . 4-8

2.1 SERVICE PROGRAM MODE OPERATION . . . . . . . . 4-8

2.1.1 Service Program Access Procedure . . . . . . . . . 4-8

2.1.2 Change A djustment Values or Modes . . . . . . . . 4-9

2.1.3 Memory Clear Procedu re . . . . . . . . . . . . . 4-10

2.2 SERVICE P ROGRAM MODE TABLE . . . . . . . . . . 4-13

2.3 SP MODE 8–INPUT CHECK . . . . . . . . . . . . . 4-21

2.4 SP MODE 9–OUTPUT CHECK . . . . . . . . . . . . 4-22

2.5 SERVICE CA LL AND USER CODE TABLE . . . . . . . . 4-23

3. SERVICE TABLES . . . . . . . . . . . . . . . . . . . 4-25

3.1 TEST PO INTS . . . . . . . . . . . . . . . . . . . 4-25

3.2 DIP SWITCHES A ND JUMPER SWITCHES . . . . . . . 4-26

3.3 VARIABLE RESISTORS . . . . . . . . . . . . . . . 4-27

4. SPECIAL TOOLS AND LUBRICANTS . . . . . . . . . . . 4-28

5. PREVENTIVE MAINTENANCE SCHE DULE . . . . . . . . . 4-29

5.1 PM TABLE . . . . . . . . . . . . . . . . . . . . . 4-29

5.2 EXPLANATION OF REGULAR PM . . . . . . . . . . . 4-32

5.3 REGULAR PM PROCEDURE . . . . . . . . . . . . . 4-34

5. REPLACEMENT AND ADJUSTMENT

1. EXTERIOR AND INNER COVERS . . . . . . . . . . . . 5-1

1.1 EXTERIOR COVER REMOVAL . . . . . . . . . . . . 5-1

1.1.1 Front Cover . . . . . . . . . . . . . . . . . . 5-1

1.1.2 Right Cover . . . . . . . . . . . . . . . . . . 5-1

1.1.3 Upper Lef t Cove r . . . . . . . . . . . . . . . . 5-2

1.1.4 Lower Lef t Cove r . . . . . . . . . . . . . . . . 5-2

1.1.5 Upper Rear Cover . . . . . . . . . . . . . . . . 5-2

1.1.6 Lower Rear Cover . . . . . . . . . . . . . . . . 5-2

1.1.7 Upper Cover . . . . . . . . . . . . . . . . . . 5-3

1.2 INNER COVER REMOVAL . . . . . . . . . . . . . . 5-4

2. OPTICS . . . . . . . . . . . . . . . . . . . . . . . 5-5

2.1 EXPOSURE GLASS REMO VAL . . . . . . . . . . . . 5-5

2.2 1ST MIRROR REMOVAL . . . . . . . . . . . . . . . 5-6

2.3 2ND AND 3RD MIRROR REMO VAL . . . . . . . . . . 5-8

2.4 4TH AND 5TH MIRROR REPLA CEME NT . . . . . . . . 5-10

2.5 EXPOSURE LAMP REP LA CEME NT . . . . . . . . . . 5-11

2.6 THERMOFUSE REPLA CEME NT . . . . . . . . . . . . 5-13

2.7 SCANNER DRIVE WIRE REPLACEME NT . . . . . . . . 5-14

2.7.1 Wire Removal . . . . . . . . . . . . . . . . . 5-14

2.7.2 Wire Installation . . . . . . . . . . . . . . . . . 5-15

2.8 SCANNER MOTOR REPLA CEME NT . . . . . . . . . . 5-21

2.9 LENS DRIVE MOTOR REPLACEMENT (A152 only) . . . . 5-22

2.10 4TH/5TH MIRROR MOTOR REP LACEMENT (A152 Only) . 5-24

3. DEVELOPMENT AND TONER SUPPLY . . . . . . . . . . 5-25

3.1 DEVELOPMENT UNIT REMOVAL . . . . . . . . . . . 5-25

3.2 TONER SUP PLY UNIT REMOVAL . . . . . . . . . . . 5-26

3.3 DEVELOPER REPLACE MENT . . . . . . . . . . . . 5-27

3.4 INLET SEAL REMOVAL . . . . . . . . . . . . . . . 5-28

3.5 TONER SUPPLY CLUTCH REPL ACE MENT . . . . . . . 5-29

3.6 DEVELOPMENT B IA S VOLTAGE ADJUSTMENT (SP9-38) . 5-30

4. CLEANING . . . . . . . . . . . . . . . . . . . . . . 5-31

4.1 CLEANING UNIT REMOVAL . . . . . . . . . . . . . 5-31

4.2 CLEANING BLADE REPLACEME NT . . . . . . . . . . 5-32

4.3 USED TONER COL LE CTIO N . . . . . . . . . . . . 5-33

4.4 ENTRANCE SEAL REP LA CEME NT . . . . . . . . . . 5-34

5. PAPER FEED . . . . . . . . . . . . . . . . . . . . . 5-35

5.1 FEED ROLLER REPLACEMENT . . . . . . . . . . . . 5-35

5.2 PAPER TRA Y SWITCH REPLACEMENT . . . . . . . . 5-37

5.3 RELAY SENSOR AND REGIS TRATION SENSOR

REPLACEMENT . . . . . . . . . . . . . . . . . . 5-38

5.4 RELAY ROLLER CLUTCH, PAPER FEED CLUTCH

AND REGISTRATION CLUTCH REPLACEMENT . . . . . 5-40

6. AROUND THE DRUM . . . . . . . . . . . . . . . . . 5-42

6.1 DRUM REPLACEMENT . . . . . . . . . . . . . . . 5-42

6.2 QUENCHING LAMP REPLA CEMENT . . . . . . . . . . 5-44

6.3 ERASE LAMP REP LA CEMENT . . . . . . . . . . . . 5-45

6.4 CHARGE CORONA WIRE REPLACEMENT . . . . . . . 5-46

6.5 CHARGE CORONA GRID PLATE REP LA CEME NT . . . . 5-47

6.6 TRANSFER/SEPARATION CORONA WIRE REPLACEMENT 5-48

6.7 ID SENSOR REPLACEME NT . . . . . . . . . . . . . 5-51

6.8 PICK-OFF PAWL REPLACEMENT . . . . . . . . . . . 5-52

6.9 TRANSFER/SEPARATION POWER PACK REPLACEMENT . 5-53

6.10 CORONA CURRENT ADJUSTMENT . . . . . . . . . . 5-55

6.10.1 Charge Co rona Current Adjustmen t (SP9-2) . . . . . 5-57

6.10.2 Grid Voltage Adjustme nt (SP9-48) . . . . . . . . . 5-59

6.10.3 Transfer Corona Current A djustment (SP9-5) . . . . . 5-60

6.10.4 Separation Corona Current Adjust ment (SP9-6) . . . . 5-61

7. FUSING . . . . . . . . . . . . . . . . . . . . . . . 5-62

7.1 EXIT UNIT REMOVAL . . . . . . . . . . . . . . . . 5-62

7.2 FUSING UNIT REMOVAL . . . . . . . . . . . . . . . 5-63

7.3 HOT ROLLER REP LA CEME NT . . . . . . . . . . . . 5-66

7.4 PRESSURE ROLLER REP LA CEMENT . . . . . . . . . 5-68

7.5 FUSING LAMP RE PL ACE MENT . . . . . . . . . . . . 5-69

7.6 FUSING THERMOSWITCH RE PL ACE MENT . . . . . . . 5-70

7.7 FUSING THERMISTOR REPLACEMENT . . . . . . . . 5-71

7.8 FUSING P RESSURE ADJUSTMENT . . . . . . . . . . 5-72

8. COPY Q UALITY ADJUSTMENT . . . . . . . . . . . . . 5-73

8.1 LIGHT I NTENSITY ADJUSTME NT . . . . . . . . . . . 5-74

8.2 SIDE-T O-S IDE E XP OS URE ADJUSTMENT . . . . . . . 5-75

8.3 IMAGE BI AS VOLTAGE ADJUSTMENT . . . . . . . . . 5-76

8.4 T ONER DENSITY ADJUSTMENT . . . . . . . . . . . 5-77

8.5 FIXED TONER SUP PLY MODE SE LE CTIO N . . . . . . . 5-77

8.6 TONER SUP PLY RATIO SELECTION . . . . . . . . . . 5-77

8.7 ID SENSOR (Vsg) ADJUSTMENT . . . . . . . . . . . 5-78

8.8 ADS (Auto Image Density Sensor) ADJUSTMENT . . . . . 5-79

8.9 HORIZONTAL MAG NIFI CATION ADJUSTME NT . . . . . . 5-80

8.10 VER TICAL MAGNIFICATION ADJUSTMENT . . . . . . 5-81

8.11 FOCUS ADJUSTMENT . . . . . . . . . . . . . . . 5-82

8.12 LEADING EDGE ERA SE MARG IN ADJUSTMENT . . . . 5-83

8.13 REGIS TRATION A DJUSTME NT . . . . . . . . . . . 5-83

8.14 SIDE-T O -SI DE REGISTRA TION ADJUSTMENT . . . . . 5-84

8.15 4TH/5TH MIRRO R HEIGHT ADJUSTME NT . . . . . . . 5-87

9. OTHERS . . . . . . . . . . . . . . . . . . . . . . . 5-88

9.1 OZONE FILTER REPLACEMENT . . . . . . . . . . . 5-88

9.2 220∼230/240V CONVERSION . . . . . . . . . . . . . 5-89

9.3 OPTIONAL EQUIPMENT INSTALLATION . . . . . . . . 5-90

9.3.1 Optics A nti-condensation Heater Installation . . . . . . 5-90

9.3.2 Drum Ant i-con de nsa tion Heater In stallation . . . . . . 5-91

9.3.3 Pre-transfe r Lamp (PTL) Installation . . . . . . . . . 5-92

9.3.4 Optics Cooling Fan Inst alla tion (A151 Copier Only) . . . 5-93

6. TROUBLESHOOTING

1. COPY QUALITY . . . . . . . . . . . . . . . . . . . . 6-1

1.1 BLANK COPY (WHITE COPY ) . . . . . . . . . . . . . 6-1

1.2 DIRTY BACKGROUND . . . . . . . . . . . . . . . . 6-4

1.3 UNEVEN IMAGE DENS ITY . . . . . . . . . . . . . . 6-7

1.4 VERTICAL BLACK BANDS . . . . . . . . . . . . . . 6-8

1.5 VERTICAL BLACK LINES . . . . . . . . . . . . . . 6-9

1.6 VERTICAL WHITE LINES OR BANDS—1 (DULL OR BLURRED) 6-10

1.7 VERTICAL WHITE LINES OR BANDS—2 (THIN, DISTINCT) . 6-1 1

1.8 HORIZONTAL BLACK/WHITE LI NES . . . . . . . . . . 6-12

1.9 JITTER . . . . . . . . . . . . . . . . . . . . . . 6-13

1.10 BLACK SPOTS ON THE CO PY IMAGE . . . . . . . . . 6-14

1.11 SKEWED (OPTICAL) COPY IMAGE . . . . . . . . . . 6-15

1.12 TONER DENSITY TOO HIGH . . . . . . . . . . . . . 6-16

1.13 TONER DENSITY TOO LOW . . . . . . . . . . . . . 6-18

1.14 TONER S CATTERING . . . . . . . . . . . . . . . 6-20

1.15 UNFUSED COPY IMAG E . . . . . . . . . . . . . . 6-21

1.16 PAPER MISFEED . . . . . . . . . . . . . . . . . 6-22

1.17 TRANSFER FAILURE . . . . . . . . . . . . . . . . 6-23

1.18 DF ORIGINAL MISFEED OR SKEW . . . . . . . . . . 6-24

2. SERVICE CALL CONDITIONS . . . . . . . . . . . . . . 6-25

2.1 CODE #11 — EXPOSURE LAMP ERROR . . . . . . . . 6-25

2.2 CODE #12 — EXPOSURE LAMP ERRO R . . . . . . . . 6-27

2.3 CODE #13 — ZERO CROSS SIGNAL ERROR . . . . . . 6-28

2.4 CODE #21 — SCANNER HOME POSITIO N ERROR . . . . 6-29

2.5 CODE #22 — SCANNER HOME POSITIO N ERROR . . . . 6-31

2.6 CODE #28 — LENS HOME POSITIO N ERROR (A1 52 ONLY) 6-33

2.7 CODE #29 — LENS HOME POSITIO N ERROR (A1 52 ONLY) 6-35

2.8 CODE #2A — 4TH/5TH MIRROR HOME POSITION ERROR

(A152 COPIER ONLY) . . . . . . . . . . . . . . . . 6-37

2.9 CODE #2B — 4TH/5TH MIRROR HOME POSITION ERRO R

(A152 COPIER ONLY) . . . . . . . . . . . . . . . . 6-39

2.10 CODE #40 – OPTICS THERMISTOR ERROR . . . . . . 6-41

2.11 CODE #52 — FUSING WARM-UP ERRO R . . . . . . . 6-42

2.12 CODE #53 — FUSING OVERHE AT . . . . . . . . . . 6-44

2.13 CODE #55 — FUSING THERMIS TOR OPEN . . . . . . 6-45

2.14 CODE #96 — DF TIMING PULSE ERROR . . . . . . . 6-47

2.15 DF COMMUNICATION ERROR . . . . . . . . . . . . 6-49

2.16 ABNORMAL CONDITIO N IN T ONER DE NSI TY DETECTI ON 6-50

2.17 OPTICS OVER HEAT PROTECTION (A151 Copier Only) . . 6-52

3. ELECTRICAL COMPONENT DE FECTS . . . . . . . . . . 6-53

3.1 SENSORS . . . . . . . . . . . . . . . . . . . . . 6-53

3.2 SWITCHES OR OTHER ELECTRICAL COMPONENTS . . . 6-54

3.3 FUSES & CIRCUIT BRE AK ERS . . . . . . . . . . . . 6-55

DOCUMENT FEEDER

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 1

2. COMPONENT LAYOUT . . . . . . . . . . . . . . . . . 2

2.1 MECHANICAL COMPONENTS . . . . . . . . . . . . 2

2.2 ELECTRICAL COMPONENTS . . . . . . . . . . . . . 2

3. ELECTRICAL COMPONENT DE SCRI PTI ONS . . . . . . . . 3

4. POWER DISTRIBUTION . . . . . . . . . . . . . . . . 4

5. BASIC OPERATION . . . . . . . . . . . . . . . . . . 5

6. INTERFACE CIRCUIT . . . . . . . . . . . . . . . . . . 6

7. ORIGINAL FEED . . . . . . . . . . . . . . . . . . . . 7

7.1 ORIGINAL PICK-UP MECHANISM . . . . . . . . . . . 7

7.2 ORIGINAL SEPARA TION MECHANISM . . . . . . . . . 8

7.3 ORIGINAL FEED-IN MECHANISM . . . . . . . . . . . 9

7.4 ORIGINAL FEED-OUT MECHANIS M . . . . . . . . . . 10

7.5 DF MOTOR CIRCUIT . . . . . . . . . . . . . . . . 11

7.6 ORIGINAL FEED AND MISFEED DETECTION TIMING . . . 12

8. INSTALLA TION PROCEDURE . . . . . . . . . . . . . . 13

9. REPLACEMENT AND ADJUSTMENT . . . . . . . . . . . 17

9.1 TRANSPOR T BELT REPLACEMENT . . . . . . . . . . 17

9.2 FEED-IN UNIT REMOVAL . . . . . . . . . . . . . . 19

9.3 PICK-UP ROLLER RE PL ACE MENT . . . . . . . . . . 20

9.4 FEED ROLLER REPLACEMENT . . . . . . . . . . . . 21

9.5 FRICTION BELT REPLACEMENT . . . . . . . . . . . 22

9.6 PICK-UP SOLENOID ADJUSTME NT . . . . . . . . . . 23