1. Before disassembling or assembling parts of the printer and peripherals,
make sure that the printer power cord is unplugged.
2. The wall outlet should be near the printer and easily accessible.
3. 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.
4. If a print job has started (the Data In LED has started blinking) before the
printer completes the warm-up or initializing period, keep hands away from
the mechanical and electrical components because the printer starts making
prints as soon as the warm-up period is completed.
5. The inside and the metal parts of the fusing unit become extremely hot while
the printer is operating. Avoid touching those components with your bare
hands.
HEALTH SAFETY CONDITIONS
Toner is non-toxic, but if you get it 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.
SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL
1. Do not incinerate the toner cassettes. Toner dust may ignite suddenly when
exposed to an open flame.
2. Dispose of toner cassettes in accordance with local regulations. (This is a
non-toxic unit.)
3. Dispose of replaced parts in accordance with local regulations.
LASER SAFETY
The Center for Devices and Radiological Health (CDRH) prohibits the repair of
laser-based optical units in the field. The optical housing unit can only be repaired
in a factory or at a location with the requisite equipment. The laser subsystem is
replaceable in the field by a qualified Customer Engineer. The laser chassis is not
repairable in the field. Customer engineers are therefore directed to return all
chassis and laser subsystems to the factory or service depot when replacement of
the optical subsystem is required.
WARNING
I
Use of controls, or adjustment, or performance of procedures other than
those specified in this manual may result in hazardous radiation exposure.
WARNING FOR LASER UNIT
I
WARNING: Turn off the main switch before attempting any of the
procedures in the Laser Unit section. Laser beams can
seriously damage your eyes.
CAUTION MARKING:
TABLE OF CONTENTS
1. OVERALL MACH INE INFORMATION........................................1-1
Refer to the electrical component layout and the point-to-point diagram on the
waterproof paper in the pocket for the locations of these components.
SymbolDescriptionNote
Printed Circuit Boards
High Voltage Supply
PCB1
PCB2
PCB3LD Drive BoardControls the laser diode.518
PCB4
PCB5
PCB6
Motors
M1MainDrives the main body components.65
M2Polygonal MirrorTurns the polygonal mirror.242 0
M3Exhaust FanRemoves heat from the printer.32
Board
Power Supply Unit
(PSU)
Control PanelControls the display panel, LED, and
Engine Control Board
(ECB)
Printer Control Board
Supplies high voltage to the drum
charge roller, development roller, and
transfer roller.
Provides dc power to the system and
ac power to the fusing lamp.
the touch key pad.
Controls all base engine functions
either directly or through other control
boards.
Controls the PC interface, print image
processing, operation panel, and
other controller options.
Index No.
P3P4
44
223
1714
21
2521
Sensors
S1Fusing ExitDetects misfeeds.1812
S2
S3
S4
S5
S6Toner Near-endDetects when toner is low.138
Switches
SW1MainSupplies power to the machine.2319
SW2
SW3
Tray Paper EndInforms the CPU when the paper tray
runs out of paper.
Tray Paper Near-end
(Stinger - P3)
By-pass Tray Paper
RegistrationDetects the leading edge of the paper
Front Cover SafetyCuts the +5VLD and +24 V dc power
Tray Paper Size
(Stinger - P3)
Informs the CPU when the amount of
paper in the tray becomes low (50±30
sheets).
Informs the CPU when there is paper
on the by-pass tray.
to determine when to stop the paper
feed clutch, and detects misfeeds.
lines and detects whether the front
cover is open or not.
Determines the size of paper in the
paper tray, based on the dial setting.
1411
16—
1110
109
2117
9—
1-10
12 March 1999ELECTRICAL COMPONENT DESCRIPTIONS
SymbolDescriptionNote
Index No.
P3P4
Magnetic Clutches
MC1
MC2
Tray Paper Feed
(Stinger - P3)
Registration
(Stinger - P3)
Starts paper feed from the paper tray.
Drives the registration rollers.
7—
12—
Solenoids
SOL1
SOL2
By-pass FeedStarts paper feed from the by-pass
tray.
Tray Paper Feed
Starts paper feed from the paper tray.
(Stinger - P4)
87
—6
Lamps
L1FusingHeats the hot roller.1915
Thermistors
TH1
FusingMonitors the temperature of the hot
roller.
1513
Thermofuses
TF1
Fusing
Provides back-up overheat protection
in the fusing unit.
2016
Overall
Information
Others
LSD1
Laser Synchronization
Detector
(Stinger - P3)
Detects the laser beam at the start of
the main scan.
1—
1-11
PRINTING PROCESS12 March 1999
1.7 PRINTING PROCESS
6
1
OPC
–600 V
5
2
–100 V
4
3
–400 V
G031V507.WMF
Stinger - P3/4 use an all-in-one type of toner cartridge that includes the drum,
toner, development roller, charge roller and other components.
1. DRUM CHARGE
In the dark, the charge roller gives a negative charge of –600 volts to the organic
photo-conductive (OPC) drum. The charge remains on the surface of the drum
because the OPC layer has a high electrical resistance in the dark.
2. LASER EXPOSURE
The processed print image data from the engine control board (ECB) is transferred
to the drum by a laser beam, which forms an electrical latent image on the drum
surface. The areas exposed by the laser beam drop to about –100 volts.
3. DEVELOPMENT
The magnetic development brush on the development roller approaches the latent
image on the drum. The development roller gives a negative bias of –400 volts to
the toner. Toner particles jump and electrostatically attach to the areas of the drum
surface where the laser reduced the negative charge on the drum.
1-12
12 March 1999PRINTING PROCESS
4. IMAGE TRANSFER
Paper is fed to the area between the drum surface and the transfer roller at the
proper time for aligning the print paper and the developed image on the drum
surface. Then, the transfer roller applies a positive current to the reverse side of the
paper (the size of the current depends on the resolution and the paper size). This
pulls the toner particles from the drum surface to the paper. At the same time, the
paper is attracted to the transfer roller.
5. PAPER SEPARATION
Paper separates from the drum as a result of the electrostatic attraction between
the paper and the transfer roller. The discharge plate helps separate the paper
from the drum.
6. CLEANING
The cleaning blade removes any toner remaining on the drum surface after the
image is transferred to the paper.
7. QUENCHING
There is no quenching mechanism.
Overall
Information
1-13
BOARD STRUCTURE12 March 1999
g
1.8 BOARD STRUCTURE
1.8.1 OVERVIEW
Motors &
Clutches
Laser
Diode
Sensors
High Voltage
Supply Board
Paper Feed
Unit
LD Drive
Board
Engine
Control
Board
(ECB)
Video I/F
+5 V/+24 V
Printer
Control
Board
Power
Supply
Unit
(PSU)
Control
Panel
Board
Fusin
Unit
G031V508.WMF
The engine control firmware controls the components connected to the engine
control board (ECB). The printer control board controls the control panel board.
The printer control board is also connected to the personal computer.
1-14
12 March 1999BOARD STRUCTURE
1.8.2 MAJOR COMPONENTS
1. Engine Control Board (ECB)
This is the printer engine control board. It controls the following functions:
·
Engine sequence
·
Machine control, printer engine control
·
Timing control for peripherals
·
Video control
·
Drive control for the sensors, motors, solenoids, and high voltage supply
board
·
PWM control for edge smoothing (PWM is done on the printer control board)
2. Printer Control Board
This is the machine’s main control board. It controls the following functions:
·
IEEE 1284 parallel port
·
Edge smoothing and toner saving
·
Engine control board
·
Control panel board
·
Interfacing with the HDD and NIB
3. LD Drive Board
Overall
Information
This is the laser diode drive circuit board.
4. Power Supply Unit (PSU)
Provides dc power to the system and ac power to the fusing lamp.
5. High Voltage Supply Board
Supplies high voltage to the drum charge roller, development roller, and transfer
roller.
6. Fusing Unit
Fuses toner to the paper. The fusing lamp is controlled by the ECB.
7. Control Panel Board
Controls the display panel, the LED, and the touch keypad.
1-15
COMPARISON12 March 1999
1.9 COMPARISON
Stinger - P3Stinger - P4V20
Standard Paper Tray
Standard Bypass Tray
Optional Paper Tray
Envelope Feeder10 envelopes5 envelopes100 envelopes
Output Paper
Capacity
Input Paper Size
(Std./Opt. Tray)
Input Paper Size
(By-pass Tray)
First Print Speed
Duplex PrintingN/AOption
Memory
(Std./Max. with Opt.)
HDD (Option)1.6 GB
Fonts
InterfaceBi-directional parallel x 1
Warm-up Time
UtilitiesAficio Manager
Dimensions
(mm: W x D x H)
WeightLess than 15 kg (33 lb.)Less than 12 kg (27 lb.)Less than 44.5 kg (99 lb.)
Consumable YieldToner Cartridge: 14 KToner Cartridge: 8 K
PM KitMaintenance Kit: 80 KMaintenance Kit: 60 K
Technology
ResolutionTrue 1,200 x 1,200 dpi (PCL6/PS)
Continuous Print
Speed
Power ConsumptionMax. 795 WMax. 600 WMax. 950 W
DriversPCL6/5e version : Windows 3.1x, 95(98), Windows NT 4.0
Halftoning
Electrical Sorting
Diagnostic Test Mode
Test Print
Hex Dump List
Smoothing
Rotated SortingN/AN/AN/A
Toner Saving Mode
PDL Auto Change
Overlays (PCL)
Auto Cassette Change
Energy Saver
250 sheets
100 sheets
500 sheets x 2
250 sheets
A3/11" x 17" ~ A5 (LEF)A4 ~ A5 (LEF)A3/11" x 17" ~ A5/5.5" x 8.5" (LEF)
A3/11" x 17" ~ B6 (SEF) free:
11.69" x 17" ~ 3.88" x 5.83"
5.5 s or less
(A4/LT ~ LEF, Standard Tray)
8 MB/40 MB8 MB/ 40 MB8 MB/68 MB
PCL6 (35 Intellifonts, 10 True Type fonts and 1 bitmap font)
PS2 (35 Adobe type 1 fonts)
Ethernet (100 Base-Tx/10 Base-T for TCP/IP, IPX/SPX, Ether
Talk)
RS232C (Optional)
Less than 39 seconds: 23°C (73°F)Less than 60 seconds: 23°C (73°F)
450 x 420 x 270 mm
(with Std. Tray adjusted for A4)
450 x 555 x 270 mm
(with Std. Tray adjusted for A3)
Laser beam scanning & electrophotographic printing
Monocomponent development
600 x 600 dpi (PCL6/PCL5e/PS)
300 x 300 dpi (PCL5e/PS)
20 ppm (A4 SEF)14 ppm (A4 LEF)25 ppm (A4/LT LEF)
PS PPD: Windows 95 (98), Windows NT 4.0, Macintosh OS 7.5
or later
mmmmmmmmmmmmmmmmm
mmmmmmmmmmmmmm
A4/LG ~ B6 (SEF) free:
8.5" x 14" ~ 3.88" x 5.83"
(A4/LT ~ SEF, Standard Tray)
360 x 420 x 270 mm
(with Std. Tray adjusted for A4)
250 sheets
100 sheets
500 sheets
6.5 s or less
500 sheets x 2 + 1,500 sheets
Standard Output Tray: 400 sheets
A3/11"x17" ~ A5/5.5" x 8.5" (SEF)
PCL5e (35 Intellifont, 10 True Type
font and 1 bitmap font)
PS2 (35 Adobe type 1 fonts)
Bi-directional parallel (Standard)
Ethernet (10 Base 2/T for
IPX/SPX, TCP/IP, Apple Talk)
Token Ring (4 Mbps, 16 Mbps for
IPS/SPX, TCP/IP, Apple Talk)
530 x 625 x 472 mm
(with by-pass tray closed, without
the optional paper tray unit, without
options)
Laser beam scanning &
electrophotographic printing
Dualcomponent development
600 dpi, 400 dpi (available when
the PostScript option is installed),
300 dpi (simulated by doubling
pixel width and height at 600 dpi
resolution)
PCL version : Windows 3.1xx, 95,
Windows NT 3.51/4.0 (PCL & PS
version: Macintosh)
250 sheets
100 sheets
External Tray: 100 sheets
m
(N/A from Driver)
N/A
1-16
12 March 1999PRINTING
2. DETAILED SECTION DESCRIPTIONS
2.1 PRINTING
2.1.1 IMAGE DATA PATH
Drum
LD Unit
LD Drive
Board
ECB
PC AT
Compatible
Parallel
Gate
Array
Printer Control Board
Macintosh
Ethernet
NIB
Optional Bus I/F
CN.
ROCKY W
G031D502.WMF
The printer control board receives the print data from the host computer (AT
compatible Windows PC or Macintosh).
·
For the Stinger - P3, the printer control board has two OBI (Optional Bus
Interface) connectors to connect a network interface board (NIB), RS232C
interface, or HDD unit.
·
For the Stinger - P4, the printer control board has one OBI connector.
Detailed
Descriptions
The printer control board generates the print image data and sends it with
commands to the ECB (Engine Control Board).
The printer control board contains the image processing ASIC (ROCKY W). The
ROCKY W ASIC controls the image processing, IEEE1284 interface, DRAM, edge
smoothing, and toner saving. (ASIC: Application Specific Integrated Circuit)
The ECB contains a gate array. The gate array controls LD print timing control and
the serial interface to the printer control board.
Finally, the ECB sends the video data to the LD drive board.
2-1
PRINTING12 March 1999
2.1.2 PRINTER CONTROL BOARD
CPU
Printer
Control Board
Parallel I/F
ROCKY W
Resident
DRAM
32-bit Data
Address/Command
ECBLD Unit
(ASIC)
Option Board
NIB
HDD
RS232C
Code
ROM
DIMM
SIMM
G031D503.WMF
The printer control board receives the print data from the computer through the
parallel cable or network interface board.
The printer control board contains the CPU (which is a 64-bit RISC processor), the
ROCKY W ASIC, 8 MB of resident DRAM for main memory, and a 8 MB code
ROM.
A SIMM card can be installed for extra DRAM memory and a DIMM card can be
connected for service purposes (firmware upgrade).
The control board controls the following to produce the print image data.
1) IEEE1284 parallel port interface
2) Control panel
3) Edge smoothing and toner saving
4) Engine control board
5) Interfacing with the HDD, NIB, and RS232C board.
2-2
12 March 1999PRINTING
2.1.3 IMAGE DATA PROCESSIING
Edge smoothing and toner saving are performed by an ASIC (ROCKY W). The
edge smoothing and toner saving modes can be switched on/off with the machine’s
control panel or the printer driver.
Edge Smoothing
Fig. A
Fig. B
Fig. C
Sub Scan
Direction
Main Scan Direction
4/43/42/41/40
G031D504.WMF
Detailed
Descriptions
Jagged edges on characters as shown in the above illustration are reduced using
edge smoothing. Edge smoothing changes the laser pulse duration and position for
certain pixels.
Fig. A shows the four possible pulse durations, and Fig. B shows how the laser
pulse can be in one of three positions within the pixel. Fig. C shows an example of
how edge smoothing is used.
Edge smoothing is not done for 1,200-dpi printing.
Toner Saving Mode
Toner saving is done by reducing the number of black dots in the printed image. An
8 x 8 matrix filter is used.
As a result, less toner is used to create the latent image on the drum and black
areas print as gray.
The printer driver prevents edge smoothing and toner saving mode from being
used at the same time.
2-3
PRINTING12 March 1999
2.1.4 HOST INTERFACE
Bi-directional Parallel Interface
G031D505.WMF
A 36-pin bi-directional parallel interface connector (female) is used.
The bi-directional parallel interface on the controller works in three modes;
Compatible, Nibble and ECP modes. These modes are standardized by IEEE
1284.
2-4
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