Ricoh FW 810 User manual

SECTION 1
OVERALL MACHINE INFORMATION

1. SPECIFICATIONS
Configuration: Table top
Copy Process: Electrostatic transfer system
Original Feed: Sheet feed
Original Size: Maximum: 914 x 3,600 mm
Minimum: 182 x 257 mm (B5 lengthwise)
Copy Size: Same as "Original Size"
Copying Speed: Manual feed: 5 cpm (A1/D sideways)
Tray feed: 6 cpm (A1/D sideways)
First Copy: 22 seconds (A1 sideways)
Warm-up Time: Within 7 minutes (Room temperature 20oC)
Copy Counter: 1 to 9
Automatic Reset: 2 minutes after copying is finished (can be set
to 1, 3, 4, or 5 minutes or to no auto reset)
Photoconductor: Organic photoconductor drum
Drum Charge: Single-wire with grid plate (Negative Charge)
Reproduction Ratio: 1 : 1 (±0.5%)
Exposure System: Slit exposure via fiber optic array
Exposure Lamp: Fluorescent lamp (65 W)
Development: Dual-component dry toner system
Toner Replenishment: Cartridge system (750 g toner/cartridge)
Toner Consumption: 1,600 A1 or D copies per cartridge (7% original)
Development Bias: Negative
Toner Density Control: Pattern density detection by photosensor and
direct toner density detection by induction
sensor
Image Density Adjustment: Development bias control + exposure control +
grid voltage control
Auto Image Density
Control: Development bias control and exposure control
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Image Transfer: Single wire dc corona (negative charge) with
pre-transfer lamp
Paper Separation: Dual wire ac corona and pick-off pawls
Cleaning: Cleaning blade
Quenching: Photo quenching by LEDs
Paper Feeding: Manual feed (auto sheet feeder optional)
Image Fusing: Heat and pressure type, teflon (upper) and
silicone rubber (lower) rollers
Fusing Lamp: Halogen lamp (115 V: 1,100 W, 220/240 V:
1,100 W)
Self-diagnostic Codes: 14 codes, displayed in copy counter
Power Source: 115 V/60 Hz....12 A
220 V/50 Hz....7 A
240 V/50 Hz....7 A
Power Consumption: Maximum: 1.4 kW
Warm-up: 1.2 kW
Ready: 0.1 to 1.2 kW
Copy cycle: 1.4 kW
Ozone Output: Less than 0.1 ppm (1000 ft3room, air turnover
at least 3 times per hour)
Dimensions (W x D x H): 1,410 x 800 x 600 mm
55.51 x 31.50 x 23.62 in
Weight: 180 kg, 397 lb
Optional Equipment: ---- Automatic sheet feeder
---- Roll cutter
---- Paper spool
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2. OPERATOR CONTROLS
2.1 OPERATION PANEL
1
3
4
5
6
78910 11 12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
2
1. Manual Image Density
Indicators
Show the image density level
selected by the Lighter and Darker
keys.
2. Lighter Copy Indicator
There are 14 manual ID levels but
only 7 manual ID LEDs. The Lighter
Copy indicator lights when manual
ID levels from 8 to 14 are selected.
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3. Wait Indicator
Indicates that the machine is not ready
to copy.
4. Select Paper Key
Press to select manual feed or the auto
sheet feeder.
5. Ready Indicator
Lights when the machine is ready to
make copies.
6. Auto Sheet Feed Indicator
Lights when the auto sheet feeder is
selected.
7. Manual Feed Indicator
Lights when the manual paper feed
mode is selected.
8. Add Paper Indicator
Lights when the auto sheet feeder runs
out of paper.
9. Add Toner Indicator
Lights when it is time to install a new
toner cartridge.
10. Original Misfeed Indicator
Lights if an original misfeeds within the
copier.
11. Misfeed Indicator
Lights if paper misfeeds within the
copier.
12. Close Unit Indicator
Indicates that one of the copier’s units
is open. The copier will not operate until
it is completely closed.
13. Toner Collection Bottle Indicator
Lights when it is time to empty the toner
collection bottle.
14. Call Service Indicator
Indicates that there are functional
problems within the copier.
15. Copy Counter
Displays the number of copies entered,
the number of copies made, and
service codes.
16. Copy Exit Way Key
Selects either upper or lower copy exit.
17. Lead Edge Erase Indicators
Shows the width of the leading edge
erase margin.
18. Lead Edge Erase Key
Selects the amount of leading edge
erase.
19. Clear Modes Key
Press to clear the copier of previously
entered settings.
20. Clear/Stop Key
Press to cancel the copy number
entered. While copying, press to stop
copy operation.
21. Plus Key
Press to increase the number of copies
to be made. (The maximum repeat
copies is 9.)
22. Minus Key
Press to decrease the number of
copies to be made.
23. Auto Image Density Indicator
Lights when the copier is automatically
controlling the image density.
24. Auto Image Density Key
Press to enter and exit the auto image
density mode.
25. Darker Key
Press to make copies darker
26. Lighter Key
Press to make copies lighter.
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2.2 INDICATOR PANEL
1. Insert Original Indicator
Lights when the machine is ready for an original to be inserted. Turns off
when an original is inserted.
2. Stop Key
Press to stop the copier during a copy cycle (emergency stop).
3. Insert Copy Paper Indicator
Lights when the machine is ready for a sheet of copy paper to be inserted.
Turns off when a sheet of copy paper is inserted.
1
2
3
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3. DRUM PROCESSES
1. Charge
In the dark the charge corona unit applies a negative charge to the drum.
The grid plate ensures the charge is applied uniformly. The charge remains
on the surface of the drum because the photoconductive drum has a high
electrical resistance in the dark.
2. Exposure
High intensity light from a fluorescent lamp is reflected from the moving
original through the fiber optic array. The charge on the drum surface is
dissipated in direct proportion to the intensity of the reflected light, thus
producing an electric latent image on the drum surface.
12
3
4
56
7
8
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3. Development
The magnetic developer brush on the development roller comes in contact
with the latent image on the drum surface. Toner particles are
electrostatically attracted to the negatively charged latent image areas.
4. Pre-Transfer Lamp
The pre-transfer lamp illuminates the drum prior to image transfer. This
reduces the attraction between the toner and the drum, thus making image
transfer easier.
5. Image Transfer
Copy paper is fed to the drum surface at the proper time to align the copy
paper and the developed image on the drum surface. Then a strong negative
charge is applied to the back side of the paper. The negative charge pulls
the toner particles from the drum surface onto the paper.
6. Paper Separation
A strong ac corona discharge is applied to the back side of the copy paper,
reducing the charge on the paper and breaking the electrostatic attraction
between the paper and the drum. Then, the stiffness of the copy paper
causes it to separate from the drum. The pick-off pawls help to separate
paper which has low stiffness.
7. Cleaning
The cleaning blade removes any toner remaining on the drum surface.
8. Quenching
The light from the quenching lamp electrically neutralizes the surface of the
drum.
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4. MECHANICAL COMPONENT LAYOUT
1. 1st Feed Detector
2. 2nd Feed Detector
3. Toner Cartridge
4. 5th Press Roller
5. Original Recycle Gate
6. Original Set Detector
7. Front Original Feed Roller
8. 1st Press Rollers
9. Original Exit Detector
10. 1st Original Transport
Detector
11. Exposure Lamp
12. Platen Roller
13. Fiber Optic Array
14. Charge Corona Unit
15. 2nd Original Transport
Detector
16. Original Registration
Rollers
17. 4th Press Rollers
18. 2nd Press Rollers
19. Rear Original Feed Roller
20. 3rd Press Rollers
21. Quenching Lamp
22. Upper Exit Rollers
23. Upper Exit Sensor
24. Exit Rollers
25. Exit Gate
26. Exit Detector
27. Lower Exit Sensor
28. Hot Roller
29. Pressure Roller
30. Transport Belt
31. Transport Sensor
32. Cleaning Unit
33. Pick-off Pawls
34. OPC Drum
35. T/S Corona Unit
36. Paper Registration Roll-
ers
37. Pre-Transfer Lamp
38. Registration Sensor
39. Development Unit
40. Manual Feed Rollers
1
2
3
4
5678
911
10 12 13 14 15 16
17 18
19
20
21
22
23
29
24
27
25
28
30
31
32
33
34
35
36
37
38
3940
26
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5. DRIVE LAYOUT
1. Original Drive Belt 2
2. Rear Original Feed Rollers
3. Original Drive Clutch
4. Main Drive Motor
5. Original Registration Roll-
ers
6. Original Drive Belt 3
7. Platen Roller
8. Front Original Feed Rollers
9. Development Roller Gear
10. Auger Gear
11. Toner Supply Clutch
12. Development Motor
13. Paper Feed Clutch
14. Paper Feed Drive Chain
15. Development Drive Belt
16. Paddle Roller Gear
17. Registration Roller Clutch
18. Drum Drive Gear
19. Toner Collection Coil Gear
20. Feed/Fusing Drive Belt 2
21. Fusing Drive Chain
22. Drum Drive Belt
23. Feed/Fusing Drive Belt 1
24. Transport Roller Sprocket
25. Hot Roller Sprocket
26. Lower Exit Roller Sprocket
27. Exit Roller Drive Chain
28. Upper Exit Roller Sprocket
29. Original Drive Belt 1
28
910
11
12
13
14
15
16
17
1820
21
22
23
24
25
26
27
8
7
6
5
4
3
2
1
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29
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6. ELECTRICAL COMPONENT LAYOUT
6.1 MIDDLE AND UPPER SECTIONS
6
2
1
34
578
9
10 12
11
13
14
15 16
17
19
20
18
22
21
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
40
41
42
43
39
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6.2 LOWER AND FUSING SECTIONS
44
45
46 47 48 49
50 51
52 53
54 55
56
57
58
60
61
62
63
64
65
59
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1. Development Motor
2. Development Motor
Capacitor
3. Charge/Bias PP
4. Lamp Regulator
5. Main Motor Capacitor
6. Light Sensor
7. Cooling Fan
8. Original Feed Clutch
9. Main Motor
10. Indicator Panel
11. 1st Original Transport
Detector
12. Original Registration
Sensor
13. 2nd Original
Transport Detector
14. Auto Density Sensor
15. Upper Exit Sensor
16. Exit Sensor
17. Lower Exit Sensor
18. Pattern Shutter SOL
19. Upper Safety Switch
20. Rear Safety Switch
21. Exit Gate SOL
22. Pulse Generator
23. Exhaust Fan
24. Toner Overflow
Sensor
25. Recycle Gate SOL
26. Main Board
27. Exposure Lamp
28. Recycle Gate
Detector
29. Operation Panel
30. Pre-Transfer Lamp
31. ID Sensor
32. Pick-off Pawl SOL
33. Registration Sensor
34. 2nd Feed Detector
35. 1st Feed Detector
36. Toner Density Sensor
37. Paper Stopper SOL
38. Original Exit Detector
39. Original Set Detector
40. Original Stopper SOL
41. Quenching Lamp
42. Toner Cover SW
43. Toner Supply SOL
44. Manual Feed SOL
45. Registration SOL
46. Fusing Lamp
47. Transfer/Separation
PP
48. DC Power Supply
49. Hot Roller Thermistor
50. AC Controller 2
51. AC Controller 1
52. Fusing Thermofuse
(x2)
53. Pressure Roller
Thermistor
54. Triac
55. Vacuum Fan
56. Circuit Breaker
57. Noise Filter
58. AC Terminal Block
59. Auto Feeder Safety
Switch
60. Main Switch
61. Total Counter
62. Lower Safety Switch
63. Vacuum Fan Motor
Capacitor
64. Transport Sensor
65. Anticondensation
Heater
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7. ELECTRICAL COMPONENT DESCRIPTIONS
SYMBOL NAME FUNCTION LOCATION
Motors
M1 Main Motor Drives all mechanical components
except the development unit and the
fans. (100 Vac)
9
M2 Development
Motor Drives the development unit. (100 Vac) 1
M3 Exhaust Fan
Motor Removes heat from around the fusing unit. (100 Vac) 23
M4 Cooling Fan Mo-
tor Provides air flow to the optics cavity. (100 Vac) 7
M5 Vacuum Fan Provides suction so that paper is held
firmly on the transport belts and
rollers. (100 Vac)
55
Magnetic Clutches
MC1 Original Feed
Clutch Drives the original feed mechanism. 8
MC2 Registration
Clutch Drives the registration rollers. 45
Solenoids
SOL1 Toner Supply
Solenoid Turns on to supply toner to the development unit. 43
SOL2 Pattern Shutter
Solenoid On ID check cycles, this solenoid turns on to move the pattern plate into
the light path.
18
SOL3 Exit Gate Sole-
noid Controls the position of the exit gate. (When ON, the paper exits downward;
when OFF, the paper exits upward.)
21
SOL4 Pick-off Pawl
Solenoid Moves the pick-off pawls against the drum. 32
SOL6 Paper Stopper
Solenoid Moves the paper stopper down to prevent paper from being inserted. 37
SOL7 Manual Feed
Solenoid Turns ON to engage the manual feed clutch. 44
SOL8 Recycle Gate
Solenoid Controls the position of the recycle gate. (ON = recycle gate in down
position,
OFF = recycle gate in up position.)
19
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SYMBOL NAME FUNCTION LOCATION
SOL9 Original Stopper
Solenoid Moves the original stopper down to prevent an original from being inserted. 40
SOL10 Auto Feeder So-
lenoid 1 Turns the paper feed roller of the auto sheet feeder. ----
SOL11 Auto Feeder So-
lenoid 2 turns the relay rollers of the auto sheet feeder. ----
Switches
SW1 Main Switch Supplies power to the copier. 60
SW2 Upper Safety
Switch Cuts ac 100 volt power when the upper unit is opened. 25
SW3 Lower Safety
Switch Cuts ac 100 volt power when the middle unit is opened. 62
SW4 Rear Safety
Switch Cuts ac 100 volt power when the paper exit unit is opened. 20
SW5 Toner Cover
Switch Cuts power to the toner supply solenoid and the main motor when the
toner cartridge cover is opened.
42
SW6 Auto Feeder
Safety Switch Prevents main motor operation when the auto feeder is not set. 59
Sensors and Detectors
S1 Image Density
Sensor Detects the image density of the test pattern on the drum. 31
S2 Toner Density
Sensor Detects the density of toner in the developer. 36
S3 Toner Overflow
Sensor Detects when the used toner tank is full. 24
S4 Pulse Generator Supplies timing pulses to the main
board (photointerrupter). 22
S5 Original Set De-
tector Detects when an original is inserted. 39
S6 1st Original
Transport
Detector
Monitors movement of the original. 11
S7 2nd Original
Transport
Detector
Monitors movement of the original. 13
S8 Original Regis-
tration Sensor Detects when the original lead edge passes the original registration rollers. 12
SYMBOL NAME FUNCTION LOCATION
S9
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Original Exit De-
tector Monitors movement of the original. 38
S10 Recycle Gate
Detector Detects whether the recycle gate is in the up or down position. 28
S11 1st Feed
Detector Detects when copy paper is inserted. 35
S12 2nd Feed
Detector Monitors copy paper movement between the manual feed rollers and
the registration rollers.
34
S13 Registration
Sensor Detects when copy paper arrives at the registration rollers. 33
S14 Transport
Sensor Monitors paper movement between the transfer/separation section and the
fusing unit.
64
S15 Exit Detector Monitors copy paper movement
through the exit unit. 16
S16 Upper Exit
Sensor Monitors copy paper movement through the upper exit guides. 15
S17 Lower Exit
Sensor Monitors copy paper movement through the lower exit guides. 17
S18 Auto Sheet
Feeder Sensor Detects misfeeds in the auto sheet feeder. ----
S19 Paper End De-
tector Detects when the auto sheet feeder runs out of paper. ----
Printed Circuit Boards
PCB1 Main Board Controls all copier functions both
directly and through other PCBs. 26
PCB2 DC Power
Supply Provides dc power for all components of the machine. 48
PCB3 AC Controller 1 Provides ac power to the fusing lamp
and triac. 51
PCB4 Lamp Regulator Provides power to the exposure lamp. 4
PCB5 AC Controller 2 Provides ac power to the main motor
and development motor. 50
PCB6 Indicator Panel Contains the paper and original
insertion indicators and the original
feed stop key.
10
PCB7 Operation Panel Contains the operator controls and
indicators. 29
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SYMBOL NAME FUNCTION LOCATION
Lamps
L1 Exposure Lamp Provides light to reflect the original’s
image onto the drum. 27
L2 Quenching
Lamp Neutralizes any charge remaining on the drum surface after cleaning. 41
L3 Fusing Lamp Provides heat to the fusing unit. 46
L4 Pre-Transfer
Lamp (PTL) Reduces the charge on the drum surface prior to image transfer. 30
Power Packs
P1 Charge/Bias
Power Pack Provides high voltage power for the charge corona, charge grid, and
development bias.
3
P2 Transfer/Sepa-
ration Power
Pack
Provides high voltage power for the
transfer corona and separation
coronas.
47
Thermistors
TH1 Hot Roller
Thermistor Monitors the hot roller’s surface temperature. 49
TH2 Pressure Roller
Thermistor Monitors the pressure roller’s surface temperature. 53
TH3 Exposure Lamp
Thermistor Monitors the fluorescent lamp’s temperature. ----
Thermofuses
TF1 Fusing
Thermofuse Protects against fusing overheat. (Two thermofuses in parallel.) 52
TF2 Exposure Lamp
Thermofuse Protects against exposure lamp overheat. 27
Heaters
H1 Lamp Heater Warms the scanning lamp. ----
H2 Anticondensa-
tion Heater Keeps moisture from forming inside the copier. 65
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SYMBOL NAME FUNCTION LOCATION
Others
CO1 Total Counter Keeps track of the total length of
copies made. 61
NF Noise Filter Filters electrical noise on the ac power
input lines. 57
TR Transformer Steps down the line voltage to 100
Vac. ----
TR Triac Provides ac power to the fusing lamp. 54
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8. AC POWER DISTRIBUTION
Hot
Neutral
N. F
C.B SW3 SW4 SW2
Interlock Switches
Trans-
fomer
Main Switch
(SW1)
Exhaust
Fan
M3
Cooling
Fan
M4
Vacuum
Fan
M5
Lamp
Regulator
(PCB4)
Exposure Lamp(L1)
CN1
-1
-2
CN3
-1
-2
CN3
-4
-5
Triac
T309 T1
T310 G
T308
Fusing Lamp(L3)
Thermofuse(x2)
AC
Controller 1
(PCB3)
T307
T305
T306
T304
CN401-1
CN401-2
M1
M2
CN402
-1
-2
CN404
-1
-2
Main
Motor
Develop-
ment
Motor
AC Controller 2(PCB5)
T2
Anticonden-
sation Heater
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The preceding schematic shows how ac power is distributed in this machine.
The ac power from the wall outlet passes through the noise filter, circuit
breaker, and three interlock switches to the transformer and to ac controller
1.
AC controller 1 powers the fusing lamp with direct wall outlet ac power.
The main board controls the fusing lamp through the triac.
The transformer steps the ac power down to 100 volts and then provides it to
the main switch. If the main switch is off, power is applied only to the
anticondensation heater. If it is on, at 100 volts goes to the fan motors, ac
controller 2, and the lamp regulator.
AC controller 2 provides ac 100 volts power to the main motor and
development motor. RA401/402 turn the motors on and off.
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