Ricoh FT6645 Installation guide

FT6645/6655/6665
SERVICE TRAINING
MANUAL

SECTION 1
OVERALL MACHINE
INFORMATION

1. SPECIFICATION
Configuration: Console
Copy Process: Dry electrostatic transfer system
Toner Supply Control: Fuzzy Control
Photoconductor: OPC drum
Originals: Sheet/Book
Original Size: Maximum A3/11" x 17"
Original Alignment: Left rear corner
Copy Paper Size: Maximum A3/11" x 17"
Minimum A5/51/2" x 81/2" (Tray)
B5/81/2" x 11" (1.5K LCT)
A6/51/2" x 81/2" (By-pass)
Duplex Copying: Maximum A3/11" x 17"
Minimum A5/51/2" x 81/2" (sideways)
Copy Paper Weight: Paper tray: 52 ~ 128 g/m2, 14 ~ 34 lb
Bypass feed table: 52 ~ 157 g/m2, 14 ~ 42 lb
Duplex copying: 64 ~ 104 g/m2, 17 ~ 24 lb
Reproduction Ratios: 4 Enlargement and 6 Reduction
A4/A3 Version LT/LDG Version
Enlargement 200%
141%
122%
115%
200%
155%
129%
121%
Full Size 100% 100%
Reduction 93%
82%
75%
71%
65%
50%
93%
85%
77%
74%
65%
50%
STM 1-1 FT6645/6655/6665

Power Source: 115V, 60Hz, more than 20A (for N.A)
220 ∼240V, 50Hz/60Hz, more than 10A (for EU
and AA)
Power Consumption: FT6645(A095) and FT6655(A096) copiers
Copier only Full system*
Warm-up 0.90 kVA 0.90 kVA
Stand-by 0.25 kVA 0.25 kVA
Copying 1.20 kVA 1.30 kVA
Maximum 1.45 kVA 1.50 kVA
FT6665 (A097) copier
Copier only Full system*
120 V
machine 230 V machine 120 V machine 230 V machine
Warm-up 1.20 kVA 1.20 kVA 1.25 kVA 1.25 kVA
Stand-by 0.25 kVA 0.22 kVA 0.25 kVA 0.24 kVA
Copying 1.80 kVA 1.70 kVA 1.80 kVA 1.75 kVA
Maximum 1.80 kVA 1.70 kVA 1.80 kVA 1.75 kVA
*Full System:
•Mainframe with dual job feeder, compact
sorter stapler and 3,500-sheet large capacity
tray
•Mainframe with dual job feeder, floor type
sorter stapler and 3,500-sheet large capacity
tray
•Mainframe with recirculating document
handler, finisher and 3,500-sheet large
capacity tray
Rev. 7/94
FT6645/6655/6665 1-2 STM

Noise Emission:
Copier only Full system*
Copying (FT6645/6655 copiers) 55 dB (A) 62 dB (A)
Copying (FT6665 copier) 60 dB (A) 64 dB (A)
Full System:
•Mainframe with dual job feeder, compact
sorter stapler and 3,500-sheet large capacity
tray
•Mainframe with dual job feeder, floor type
sorter stapler and 3,500-sheet large capacity
tray
•Mainframe with recirculating document
handler, finisher and 3,500-sheet large
capacity tray
Dimensions: 690 x 690 x 980 (W x D x H Mainframe only)
1280 x 690 x 1020 (W x D x H Mainframe with
copy tray, platen cover)
Weight: Copier only: (Without the optional platen cover
= Approximately 2 kg)
FT6645 (A095) copier: Approximately (333 lbs)
FT6655 (A096) copier: Approximately (360 lbs)
FT6665 (A097) copier: Approximately (360 lbs)
Zoom: From 50% to 200% in 1% steps
Copying Speed: A4/LT (sideways) A3/DLT B4/LG
FT6645 copier 45 23 27
FT6655 copier 55 28 35
FT6665 copier 65 33 41
Warm-up Time: Less than 5 minutes (20°C)
First Copy Time:
(A4/81/2" x 11" sideways
from the 1st feed station)
3.1 seconds FT6645/6655 (A095/A096 copiers)
2.7 seconds FT6665 (A097 copier)
Copy Number Input: Number keys, 1 to 999 (count up or count down)
Manual Image Density 7 steps
Selection:
Rev. 7/94
Sound Pressure Level:
The measurements are
made according to
ISO7779
STM 1-3 FT6645/6655/6665

Automatic Reset: 1 minute standard setting; can also be set from 1
second to 999 seconds or no auto reset.
Copy Paper Capacity: •By-pass feed table: approximately 50 sheets
•Paper tray: approximately 550 sheets
•Tandem tray: approximately 500 sheets/side,
1000 total
•Large capacity tray: approximately 1,500
sheets
•Duplex: 50 sheets
Toner Replenishment: Black Only: Cartridge exchange
1,100 g/cartridge, Yield 38,000 copies
(6% originals)
Developer
Replenishment: Black Only: 1Kg/Bag, 120,000 copies (6% originals)
Optional Equipment: •Type 610, Platen cover
•DF60, Dual job feeder
•DH400, Recirculating document handler
•ST25, 20 bin sorter stapler (Floor type)
•ST24, 20 bin compact sorter stapler
•SR400, Finisher
•RT31, 3,500-sheet Large capacity tray
•Type B, Receiving Tray
Toner Collection
Bottle Capacity: 7,500cc, 120,000 copies (6% originals)
Rev. 7/94
FT6645/6655/6665 1-4 STM

2. MACHINE CONFIGURATION
2.1 COPIER OVERVIEW
There are two types of mainframe.
FT6645 (A095) copier
FT6655 (A096) FT6665 (A097) copiers
550
550
550
(3,500)
50
Rev. 7/94
(3,500)
500 x 2 or 500
550
1,500
50
Three 550-sheet paper trays Optional
3,500-sheet large capacity tray
Tandem paper tray
(including two 500-sheet paper tray)
One 550-sheet paper tray
1,500-sheet built-in large capacity tray
Optional 3,500-sheet large capacity tray
STM 1-5 FT6645/6655/6665

2.2 SYSTEM OVERVIEW
System A
The mainframe FT6645 (A095) with dual job feeder and compact sorter
stapler.
System B
Mainframe type FT6645/6655/6665(A095/A096/A097) with dual job feeder
and floor type sorter stapler. The mainframe in the illustration below is the
FT6655 (A096).
Rev. 7/94
Compact
sorter stapler
ST24 (A374)
Dual job feeder DF60 (A376)
3,500-sheets
large capacity
tray
RT31 (A380)
Dual job feeder DF60 (A376)
3,500-sheets
large capacity tray
RT31(A380)
Floor type
sorter stapler
ST25 (A377)
FT6645/6655/6665 1-6 STM

System C
The mainframe FT6665/6665 (A096/A097) with recirculating document
handler and finisher.
NOTE: All references to (A096 copier only) now refers to (A096 and
A097 copiers).
3,500-sheets
large capacity tray
RT31 (A380)
Recirculating document handler DH400 (A378)
Finisher
SR400 (A379)
Rev. 10/94
STM 1-7 FT6645/6655/6665

3. COPY PROCESS AROUND THE DRUM
1. OPC DRUM
The organic photo conductive (OPC) drum (100 mm diameter) has high
resistance in the dark and low resistance under light.
2. DRUM CHARGE
In the dark, the charge corona unit gives a uniform negative charge to the
OPC drum. The charge remains on the surface of the drum. The amount of
negative charge on the drum is proportional to the negative grid bias voltage
applied to the grid plate on the charge corona unit.
3. EXPOSURE
An image of the original is reflected to the OPC drum surface via the optics
section. The charge on the drum surface is dissipated in direct proportion to
the intensity of the reflected light, thus producing an electrical latent image on
the drum surface.
The amount of charge remaining as a latent image on the drum depends on
the exposure lamp intensity controlled by the exposure lamp voltage.
4. ERASE
The erase lamp illuminates the areas of the charged drum surface that will
not be used for the copy image. The resistance of drum in the illuminated
areas drops and the charge on those areas dissipates.
10
9
8
7
6
5
4
3
12
11
FT6645/6655/6665 1-8 STM