Ricoh FT8880 User manual

RICOH FT8880
SERVICE MANUAL
This manual is an insert upgrade which covers only the
points where the FT8880 (A083) differs from the FT8780
(A084). Refer to the FT8780 service manual for any items
not covered here.

IMPORTANT SAFETY NOTICES
PREVENTION OF PHYSICAL INJURY
1. While the machine warms up, it will suddenly start turning to perform the
process control data initialization. Keep hands away from any mechanical
and electrical components during this period.
2. Before disassembling or assembling parts of the copier and peripherals,
make sure that the copier and the second sorter power cord is unplugged.
3. The wall outlet should be near the copier and easily accessible.
4. Note that some components of the copier, the paper tray unit, and the
peripherals are supplied with electrical voltage even if the main switch is
turned off.
5. If any adjustment or operation check has to be made with exterior covers
off or open while the main switch is turned on, keep hands away from
electrified or mechanically driven components.
6. The inside and the metal parts of the fusing unit become extremely hot
while the copier is operating. Be careful to avoid touching those
components with your bare hands.
HEALTH SAFETY CONDITIONS
1. Never operate the copier without the ozone filters installed.
2. Always replace the ozone filters with the specified ones at the specified
intervals.
3. Toner and developer are non-toxic, but if you get either of them in your
eyes by accident, it may cause temporary eye discomfort. Try to remove
with eye drops or flush with water as first aid. If unsuccessful, get medical
attention.

OBSERVANCE OF ELECTRICAL SAFETY STANDARDS
1. The copier and its peripherals must be installed and maintained by a
customer service representative who has completed the training course
on those models.
2. The RAM board on the main control boards on the copier and the RDH
has a lithium battery which can explode if replaced incorrectly. Replace
the battery only with an identical one. The manufacturer recommends
replacing the entire RAM board. Do not recharge or burn this battery.
Used batteries must be handled in accordance with local regulations.
SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL
1. Do not incinerate the toner cartridge or the used toner. Toner dust may
ignite suddenly when exposed to open flame.
2. Dispose of used toner, developer, and photoconductors according to
local regulations.
3. Dispose of replaced parts in accordance with local regulations.
4. When keeping used lithium batteries in order to dispose of them later, do
not put more than 100 batteries per sealed box. Storing larger numbers or
not sealing them apart may lead to chemical reactions and heat build-up.

SECTION 1
OVERALL MACHINE
INFORMATION

1. SPECIFICATIONS
Main Copier
Copier
Configuration: Console
Copy Process: Dry Electrostatic Transfer System
Originals: Sheet/Book
Original Size: Maximum: 11" x 17", A3
Copy Paper Size: Maximum: 1st and 2nd tray 81/2" x 14", A4
3rd tray 11" x 17", A3
Minimum: 1st and 3rd tray 51/2" x 81/2", A5
2nd tray 81/2" x 11", A4
Copy Paper Weight: Standard Copying: 14 ~ 42 lb, 52 ~ 157 g/m2
Duplex Copying: 17 ~ 28 lb, 64 ~ 105 g/m2
Warm Up Time: Within 8.0 minutes (room temp. 68°F, 20°C)
First Copy Time: 4.8 seconds (81/2" x 11", A4, feed from 2nd tray)
Copying Speed: 80 copies/minute (81/2" x 11", A4)
60 copies/minute (11" x 17", A3)
Optional Equipment: Menu Reader
Key Counter
Guidance ROM Kit
Reproduction Ratios: See the following table:
LT/DLT version A4/A3 version
Enlargement 200% 200%
155% 141%
129% 122%
121% 115%
Full Size 100% 100%
Reduction
93% 93%
77% 82%
74% 71%
65% 65%
50% 50%
Overall
Information
5 June 1992 SPECIFICATIONS
1-1

Zoom: 50 ~ 200%
Toner Replenishment: Cartridge exchange (1,500 g)
Paper Feed: 1st tray (550 sheets)
2nd tray (3,000 sheets)
3rd tray (1,500 Sheets)
Power Source: 120 V, more than 20 A (LT/DLT version)
220, 230, 240 V, more than 10 A (A4/A3 version)
Power Consumption:
Maximum during LT/DLT version A4/A3 version
Stand-by 2.01 kw 2.00 kw
Copying Cycle 1.85 kw 1.89 kw
Dimensions: Copier Only: 65.4" x 30.0" x 56.9"
(1660 x 760 x 1444.5 mm)
With Finisher: 83.1" x 30.0" x 56.9"
(2110 x 760 x 1444.5 mm)
Weight: Copier Only: 917 lb/422 kg
With Finisher: 1027 lb/472 kg
Noise Emission: With Finisher/RDH:
Maximum: less than 70 db
Copy-cycle: less than 69 db (average)
Warm-up: less than 42 db
SPECIFICATIONS 5 June 1992
1-2

Recycling Document Handler
Original Size:
Stack feed mode Single feed mode CFF mode
Maximum 11" x 17", A3 11" x 17", A3 11" x 91/2"
81/2" x 12"
11" x 147/8"
Minimum 8" x 101/2", A4 51/2" x 81/2", A5
Original Weight:
Stack feed mode Single feed mode CFF mode
Maximum 28 lb, 105 g/m243 lb, 165 g/m220 lb, 80 g/m2
Minimum 17 lb, 64 g/m214 lb, 52 g/m217 lb, 64 g/m2
Number of originals to be set:
Weight
Size 64~81 g/m2
17~21 lb 82~105 g/m2 22~28 lb
A3/11" x 17" 30 sheets 20 sheets
Others 50 sheets 30 sheets
Number of Recycles: Maximum: 60 times
CFF Original Stack Height:Maximum: 50 mm
Original Set: First sheet on top, stack face down
Overall
Information
5 June 1992 SPECIFICATIONS
1-3

3. MECHANICAL COMPONENT LAYOUT
3.2 RDH
1234567
15 8
14 13 12 10 9
11
1. Inverter Roller
2. Inverter Exit Roller
3. Air Knife Nozzle
4. Exit Roller
5. Original Guide
6. Feed-in Belt
7. Original Stopper
8. Right Turn Roller
9. Belt Drive Roller
10. Transport Belt
11. Transport Rollers
12. Original Feed Roller
13. Inverter Entrance Roller
14. Single Feed Exit Gate
15. Inverter Middle Roller
MECHANICAL COMPONENT LAYOUT 5 June 1992
1-4

4. ELECTRICAL COMPONENT DESCRIPTIONS
Refer to the electrical component layout on the reverse side of the Point to
Point (Water proof paper) index numbers.
4.2 RDH
Name Function Index No.
Motors
Feed Drives the feed and transport rollers. 3
Belt Drive Drives the transport belt. 7
Inverter Drives the inverter and exit rollers. 34
Blower Supplies air to the air knife and draws air from the
vacuum section. 5
Separator Drives the original separator. 21
Sensors
Original Set Detects if the original is set on the document handler. 31
Entrance Detects the original leading edge and de-energizes
the feed belt drive clutch. 33
1st Transport Detects jams in the transport section. 16
2nd Transport Detects the original leading edge and lowers the
original feed motor speed. 15
Registration Detects the original trailing edge for the original stop
position calculation. 12
Inverter Entrance Detects jams in the transport belt section. 24
1st Inverter Detects the original trailing edge and reverses the
inverter drive motor rotation. 29
2nd Inverter Detects the original leading edge and energizes exit
roller release solenoid. 30
Exit Detects the original leading edge and lowers the
inverter drive motor speed. 32
Single Feed Set Detects the leading edge of the original in the single
feed table and turns the original feed motor. 13
Single Feed Exit Detects jams in single feed mode. 25
Lift Detects if the RDH is open. 2
CFF Detects if the computer form is set in the CFF guide.
Counts the holes lined up to the computer form. 9
Original Length Detects if the original stopper is set for 81/2" position. 19
Original Height Detects the original height on the RDH. 20
Separator H.P. Detects if the original separator is in the home
position. 22
Separator Detects if the last original of the original stack is fed. 23
Inverter Unit Cover
(Switch) Detect if the inverter unit cover is opened. 27
Original Width
(Potentiometer) Detects the original width in the stack feed mode. 17
Overall
Information
5 June 1992 ELECTRICAL COMPONENT DESCRIPTIONS
1-5

Name Function Index No.
Single Feed Original
Width (Potentiometer) Detects the original width in the single feed mode. 14
Solenoids
Vacuum Shutter Closes the vacuum shutter. 4
Single Feed Gate Lowers the single feed gate. 8
Single Feed Exit Lifts the single feed exit gate. 26
Exit Roller Releases the exit driven rollers from the exit drive
rollers. 28
Clutches
Feed Belt Drive Transmits the original feed motor drive to the feed
belt rollers. 10
Feed Belt Brake Stops the feed belt rotation. 11
PCBs
Main Control Controls overall RDH operation. 6
Blower Motor Control Controls the vacuum motor operation. 1
Indicator Indicates the single feed mode indicators. 18
ELECTRICAL COMPONENT DESCRIPTIONS 5 June 1992
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