Ricoh FT4215 User manual

A128 COPIER
SERVICE MANUAL
Only the differrences from the A110/A111 copier are described in
the following pages. Refer to the A110/A111 copier service manual
regarding the other information.

1. SPECIFICATIONS
Configuration: Desk top
Copy Process: Dry electrostatic transfer system
Originals: Sheet/Book, object
Original Size: Maximum: A3, 11" x 17"
Copy Paper Size: Maximum: A3, 11" x 17"
Minimum: A6, 51/2" x 81/2" (lengthwise)
Copy Paper Weight: 52 to 157 g/m2(14 to 42 lb)
Reproduction Ratios: 2 Enlargement and 3 Reduction
A4/A3 version LT/LDG version
Enlargement 141%
122% 155% 129%
Full size 100% 100%
Reduction 93%
82%
71%
93%
74%
65%
Zoom: From 50% to 200% in 1% steps
Copying Speed: 15 copies/minute (A4, 11" x 81/2" sideways)
10 copies/minute (A3, 11" x 17")
Warm-Up Time: Less than 60 seconds (at 20°C)
First Copy Time: 5.9 seconds (A4, 11" x 81/2" sideways for cassette
feed)
Copy Number Input: Ten keys, 1 to 99 (count up)
Manual Image Density
Selection: 7 steps
Automatic Reset: All input modes are reset 1 minute after the copier
is not in use; can also be set to 3 minutes or no
auto reset.
31 March 1994 SPECIFICATIONS
1

Energy Saver Function: Reduces electricity consumption
(Manual or manual/auto)
Paper Capacity: Cassettes: 500 sheets (A4, 81/2" x 11")
250 sheets (A3, 11" x 17")
Manual feed table: 50 sheets
Toner Replenishment: Black: Cartridge exchange (370g/cartridge)
Color (red, blue, & green):
Cartridge exchange (310 g/cartridge)
Copy Tray Capacity: 250 sheets (B4, 81/2" x 14" and smaller)
100 sheets (A3, 11" x 17")
Power Source: 110 V/ 60 Hz/ 15 A (for Taiwan)
115 V/ 60 Hz/ 15 A (for North America)
220/230/240 V/ 50 Hz/ 8 A (for Europe)
220 V/ 60 Hz/ 8 A (for Middle East)
(Refer to the serial number plate (rating plate) to
determine the power source required by the
machine.)
Power Consumption:
Copier Only Full System
Maximum 1.2 KVA 1.5 KVA
Warm-up 800 VA (average) 800 VA (average)
Copy cycle 900 VA (average) 800 VA (average)
Stand-by
(without energy
saver function)
180 VA (average) 180 VA (average)
Main switch off 20 VA (average) 40 VA (average)*
* : With the optional optics anti-condensation heater
SPECIFICATIONS 31 March 1994
2

Dimensions:
Width Depth Height
Copier only 672 mm (1130 mm)*
(1255 mm)**
26.5" (44.5")*
(49.4")**
600 mm
23.7" 363 mm (417 mm)* 14.1" (16.4")*
Full system 1274 mm
49.1" 600 mm 23.7" 466 mm 18.3"
( )* : When the A4 cassette and platen cover are installed and the copy tray is
extended.
( )** : When the A3, 11" X 17" cassette and platen cover are installed and the copy
tray is extended.
Full system: When the A3, 11" x 17" cassette and the sorter and the document feeder are
installed.
Noise Emissions:
Maximum Copy cycle Stand-by
Copier only less than 58 dB less than 55 dB less than 40 dB
Full system less than 60 dB less than 58 dB less than 40 dB
Weight:
Copier only 50 kg (110.2 lb)
Full system 67 kg (147.7 lb)
Optional Equipment and Machine Configuration: ( ) Machine Code
Configuration Optional dc power supply unit (A525)
Optional equipment Required Not required
10 bin sorter (A490) O
Document feeder (A318) O
Color development unit (A313) O
Other Optional Equipment:• Key counter
• Universal cassette
• Optics anti-condensation heater
•Specifications are subject to change without notice.
31 March 1994 SPECIFICATIONS
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2. COPY PROCESSES AROUND THE DRUM
CLEANING
The cleaning blade removes any toner remaining on the drum. (A cleaning
brush is not used in the A128 copier).
4. DEVELOPMENT
5. PRE-TRANSFER LAMP
6. IMAGE TRANSFER
7. PAPER
3. ERASE
2. EXPOSURE
1. DRUM CHARGE
9. QUENCHING
8. CLEANING
SEPARATION
(PTL)
COPY PROCESSES AROUND THE DRUM 31 March 1994
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3. MECHANICAL COMPONENT LAYOUT
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15
16
17
18
1924
2526
27
28
2023 2122
29
1. Third Mirror
2. Second Mirror
3. First Mirror
4. Exposure Lamp
5. Ozone Filter
6. Cleaning Unit
7. Lens
8. Quenching Lamp (QL)
9. Charge Corona Unit
10. Sixth Mirror
11. Erase Lamp
12. OPC Drum
13. Development Unit
14. Toner Supply Unit
15. Optics Cooling Fan
16. 1st Feed Roller
17. Manual Feed Table
18. Pick-up Roller
19. Separation Roller
20. Registration Rollers
21. Pre-transfer Lamp (PTL)
22. Transfer and Separation Corona Unit
23. Pick-off Pawls
24. Cleaning Blade
25. Pressure Roller
26. Hot Roller
27. Exit Rollers
28. Hot Roller Strippers
29. Exhaust Blower
31 March 1994 MECHANICAL COMPONENT LAYOUT
5

4. DRIVE LAYOUT
G17 BP2 G16 TB1 G19 G18 G22 G23 G24
G26
G27
G28
G29
G25
G21
G20G1
G2
G5
G6
G7
G9
G8
G10
G4 BP3 G3
BP1
G11
G1: Main Motor Gear G20: Relay Gear
TB1: Timing Belt G24: Relay Gear
G23: Relay Gear
Development
Section
Drum Fusing and Exit Section
BP1: Timing Belt Pulley
G2: Relay Gear G18: Relay Gear G21: Cleaning Drive
Cleaning
Toner Supply CL Toner Supply Unit
G17: Toner Supply CL Gear
Development UnitDevelopment CL Solenoid
G28: Exit Roller Gear
G16: Development
CLGear G27: Relay Gear
G26: Relay Gear
BP2: Timing Belt Pulley G25: Hot Roller Gear
A
G22: Relay GearG19: Drum Drive GearG3: Timing Belt Drive
Gear
DRIVE LAYOUT 31 March 1994
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Paper Feed Section
BP3: Timing Belt Pulley
G11: Registration CL
Gear G4: Relay Gear
Registration CL G5: Relay Gear
Registration Roller
Paper Feed CL G6: 1st Paper Feed CL Gear
Paper Feed Gear G7: Relay Gear
Paper Feed Rollers G8: Paper Lift CL Gear
Paper Lift CL
G9: Paper Lift Gear
G10: Sector Gear
A
31 March 1994 DRIVE LAYOUT
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5. ELECTRICAL COMPONENT LAYOUT
1
2
3
4
5678
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27 28 29 30 31
1. Scanner H.P. Sensor
2. Lens H.P. Sensor
3. Scanner Motor
4. Main Motor
5. Development Clutch Solenoid
6. Toner Supply Clutch
7. 4th/5th Mirror H.P. Sensor
8. Color Toner End Sensor
9. 4th/5th Mirror Motor
10. Pick-up Roller Release Solenoid
11. Manual Feed Table Switch
12. Color Switch
13. Paper Lift Clutch
14. Paper Feed Clutch Solenoid
15. Registration Clutch
16. Paper Size Switch
17. Paper End Sensor
18. Paper Lift Sensor
19. Registration Sensor
20. Total Counter
21. Pre-transfer Lamp (PTL)
22. ID Sensor Board
23. Erase Lamp
24. Fusing Lamp
25. Quenching Lamp (QL)
26. Auto Image Density Sensor
27. Fusing Thermistor
28. Toner Overflow Sensor
29. Fusing Thermofuse
30. Exit Sensor
31. Lens Motor
ELECTRICAL COMPONENT LAYOUT 31 March 1994
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36
37
38
39
40
41
42
43
44
45
46
47 48
35
34
33
32
32. Operation Panel Board
33. Optics Thermoswitch
34. Exposure Lamp
35. Cover Safety Switch
36. Main Switch
37. Exhaust Blower Motor
38. Drum Anti-condensation Heater
39. Main DC Power Supply Board
40. Option DC Power Supply Board
41. Option Transformer
42. Main Transformer
43. AC Drive Board
44. Main Motor Capacitor
45. Main Board
46. TC/SC Power Pack
47. CC/Grid/Bias Power Pack
48. Optics Cooling Fan Motor
31 March 1994 ELECTRICAL COMPONENT LAYOUT
9