Ricoh ap305 Service Manual ap306c

FRESA WIN+

(Machine Code: G047/G048)

SERVICE MANUAL

[Controller]



IMPORTANT SAFETY NOTICES

PHYSICAL INJURY PREVENTION

1. Before disassembling or assembling parts of the printer and peripherals,
make sure that the power cord is unplugged.

2. The wall outlet should be near the printer and easily accessible.

3. Note that some printer components are supplied with electrical voltage even
if the main switch is turned off.

4. If an adjustment or operation check must be made requiring the removal or
opening of the exterior covers while the main switch is on, keep hands away
from electrified or mechanically driven components.

5. The printer drives some of its components when it completes the warm-up
period. Keep hands away from mechanical and electrical components when
the printer starts operation.

6. The interior and metal parts for the fusing unit become extremely hot while
the printer is operating. Do NOT touch these components with bare hands.

HEALTH SAFETY CONDITIONS

1. Never operate the printer without ozone filters installed.

2. Always replace the ozone filters with the specified replacement at the
specified maintenance intervals.

3. Toner is non-toxic, but if it gets in your eyes by accident, it may cause
temporary eye discomfort. Remove it with eye drops or flush eyes with
water. If this is unsuccessful, get medical attention immediately.

SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL

1. Do NOT incinerate toner cartridges, development toner magazine (DTM) or
used toner. Toner dust may ignite suddenly when exposed to an open flame.

2. Dispose of used toner bottle and photoconductor unit (PCU) in accordance
with local regulations. (These are non-toxic supplies.)

3. Dispose of replaced parts in accordance with local regulations.

Trademarks

Microsoft, Windows 98/95/3.1x, and Windows NT 4.0 are registered trademarks of
Microsoft Corporation.

Macintosh and AppleTalk are registered trademarks of Apple Computer, Inc.
NetWare is a registered trademark of Novell, Inc.
Ethernet is a registered trademark of Xerox Corporation.

General Notice:
Other product names used herein are for identification purposes only and may be
trademarks of their respective companies. We disclaim any and all rights in those
marks.

TABLE OF CONTENTS

1. OVERALL MACHINE INFORMATION....................................... 1-1

1.1 BASIC SPECIFICATIONS.........................................................................1-1

2. DETAILED DESCRIPTIONS....................................................... 2-1

2.1 DIFFERENT POINT FROM BASE MODEL (G024)...................................2-1

2.1.1 SYSTEM SOFTWARE......................................................................2-1

2.1.2 HARDWARE.....................................................................................2-1

2.2 FUNCTIONAL OVERVIEW.......................................................................2-2

2.2.1 SYSTEM LAYOUT............................................................................2-2

2.2.2 CONTROLLER BOARD LAYOUT....................................................2-3

2.2.3 FUNCTION OF EACH DEVICE........................................................2-4

2.3 PRINT DATA PROCESSING....................................................................2-5

2.3.1 GRADATION & PRINTABLE DATA..................................................2-5

2.3.2 IMAGE DATA PROCESSING FLOW ...............................................2-6

IPDL-C (Intelligent Page Description Language for Color)....................2-7

CMS (Color Management System).......................................................2-8

Color Correction by the Driver ..............................................................2-8

BG/UCR (Black Generation/Under Color Removal)..............................2-8

Gamma Correction ...............................................................................2-8

Dither Processing .................................................................................2-9

Maximum Amount Toner Control..........................................................2-9

4 Bit Expansion.....................................................................................2-9

3. INSTALLA T ION.......................................................................... 3-1

4. SERVICE TABLES...................................................................... 4-1

4.1 CONTROLLER SP MODE ........................................................................4-1

4.1.1 ENTERING AND EXITING CONTROLLER SP MODE....................4-1

4.1.2 MENUS AND DISPLAY.................................................................... 4-2

4.1.3 SP MODE MENU HIERARCHY........................................................4-2

4.1.4 SP MODE DETAILS.........................................................................4-6

S1. Maintenance Sheet.........................................................................4-6

S2. Color Chart.....................................................................................4-7

S3. Maintenance Clear.........................................................................4-7

S4. Clear All Memory............................................................................4-7

S5. Gamma (γ) Calibration....................................................................4-7

S6. Printer ID........................................................................................4-7

S7. Toner Limiter..................................................................................4-8

S8. Brand (Default Setting: RICOH.EXP) .............................................4-8

S9. Meter Click .....................................................................................4-8

IPDL-C Menu........................................................................................4-9

Media Menu ([Media] key) ....................................................................4-9

i

4.2 POWER-UP SELF-DIAGNOSTICS.........................................................4-10

4.3 POWER-UP SELF-DIAGNOSTICS FLOW CHART................................4-10

4.4 DETAILED SELF-DIAGNOSTICS MODE ...............................................4-11

4.5 DETAILED SELF-DIAGNOSTICS FLOW CHART...................................4-11

5. PERIODIC MAINTENANCE........................................................ 5-1

6. REPLACEMENT AND ADJUSTMENT........................................ 6-1

6.1 CONTROLLER BOARD REPLACEMENT ................................................6-1

6.2 IMAGE ADJUSTMENT..............................................................................6-1

6.3 SOFTWARE UPGRADE PROCEDURE....................................................6-1

7. TROUBLESHOOTING ................................................................ 7-1

7.1 TYPES OF PROBLEMS............................................................................7-1

7.2 TROUBLESHOOTING PROCEDURE.......................................................7-2

7.2.1 HARDWARE TESTS........................................................................7-2

7.2.2 OPERATION-RELATED TESTS......................................................7-2

7.2.3 SOFTWARE-RELATED TESTS.......................................................7-2

7.3 ERROR MESSAGES ................................................................................7-3

7.3.1 OVERVIEW......................................................................................7-3

7.3.2 CONTROLLER SELF-DIAGNOSTICS ERRORS.............................7-4

7.3.3 CONTROLLER USER ERRORS......................................................7-5

7.3.4 INTERNAL ERRORS........................................................................7-6

7.3.5 ENGINE USER ERRORS (CAUTIONARY)......................................7-7

7.3.6 ENGINE USER ERRORS.................................................................7-7

7.3.7 ENGINE SERVICE CODES .............................................................7-7

8. NETWORK INTERFACE BOARD (C4000 FERRET).................. 8-1

8.1 OVERVIEW...............................................................................................8-1

8.1.1 SPECIFICATIONS............................................................................8-1

8.1.2 BLOCK DIAGRAM............................................................................8-1

8.2 COMPONENT LAYOUT............................................................................8-2

8.2.1 NETWORK INTERFACE BOARD DIAGRAM...................................8-2

8.2.2 DEVICES..........................................................................................8-2

8.3 BASIC OPERATIONS...............................................................................8-3

8.3.1 OVERVIEW......................................................................................8-3

8.3.2 SWITCH FUNCTION........................................................................8-4

NVRAM Reset Procedure.....................................................................8-4

ii

30 June 2000 OVERALL MACHINE INFORMATION

1. OVERALL MACHINE INFORMATION

1.1 BASIC SPECIFICATIONS

Page Description
Language:

Printer Driver:

Resolution: 600 dpi

Color Mode: Color, B&W

Gradation Mode 1 or 2 bits/pixel

Toner Saving: On/Off (printer driver setting) Default Setting: Disabled

Color Correction: On/Off (printer driver setting) Default setting: Enabled

Interface:

Fonts Ricoh-Script 2: 39 Roman fonts

Memory Standard: 32 MB (simplex model), 64 MB (duplex model),

• IPDL-C (Intelligent Page Description Language for Color)

• Ricoh-Script 2

• IPDL-C: Windows 95/98/2000/NT 4.0

• Ricoh-Script 2: Windows 95/98/2000/NT 4.0, Macintosh

(PPD for LaserWriter 8)

• Standard: Parallel port (IEEE1284: Compatible/Nibble/

ECP mode supported)

• Option: Parallel port (IEEE1284: only Compatible mode

supported), Ethernet (100 BASE-TX, 10 BASE-T)

(It can be replaced with optional memory.)

Overall

Information

Up to 256 MB (Replace the standard memory with optional
128-MB memory SDRAMS.)

SDRAM DIMM Slot 2 (for optional memory)

Option Bus Interface 2 (for optional network I/F board and optional parallel I/F)

Options

• 32 MB Memory

• 64 MB Memory

• 128 MB Memory

• Network Interface Board

• IEEE1284 Parallel Interface

1-1

30 June 2000 DETAILED DESCRIPTIONS

2. DETAILED DESCRIPTIONS

2.1 DIFFERENT POINT FROM BASE MODEL (G024)

2.1.1 SYSTEM SOFTWARE

1. Automatic duplex printing is available for the duplex model.

2. Manual duplex printing (printing on the reverse side) is available for the simplex
model.

3. The appropriate electric counter can be selected depending on the type of
maintenance contract for meter click charge. A new User mode, “Show
Counter”, has been added to display the Color and B/W counter values.

4. If the printer driver has been installed, the printer keeps a record of the number
of pages printed out under each registered User Code (Up to 100).

5. This printer has a job log which shows the time, number of pages and current
status of each print job. Up to 64 User IDs (User Codes) can be set.

6. The bypass tray can be used as a manual tray. If it is set to “Manual”, the paper
size selected by the printer driver takes priority over the size selected on the
operation panel.

Detailed

Descriptions

7. The printer can be set so that it will either stop or continue printing when toner
has run out.

8. 300-dpi mode is not supported.

9. It is possible to enter SP mode without turning the machine off and on.

10. The optional network interface board (C4000 Ferret) supports PortNavi.

2.1.2 HARDWARE

1. CPU
NEC VR4310-177

2. ASIC
Rocky-R, which is compatible with SDRAM. FCI2.5C was removed because
300-dpi mode is not supported. Therefore, toner saving mode is controlled by
firmware.

3. SDRAM
The type of SDRAM used has been changed from SIMM to DIMM.

4. NVRAM
The capacity of the NVRAM has been expanded to 8 KB to store the Job and
Print Logs.

5. DIP Switches
Dip switches do not require resetting when upgrading firmware.

2-1

DETAILED DESCRIPTIONS 30 June 2000

2.2 FUNCTIONAL OVERVIEW

2.2.1 SYSTEM LAYOUT

Controller Board

SDRAM

IC Card

RPS2

IC Card I/F

Program ROM I/F

Video I/F

SDRAM I/F

SDRAM

SDRAM I/F

IEEE1284 I/F

Host

Network I/F

Board

Option Bus I/F

2-2

Host

G048O701.WMF

30 June 2000 DETAILED DESCRIPTIONS

2.2.2 CONTROLLER BOARD LAYOUT

NVRAM

DIP SW

Option RAM I/F

IC Card I/F

Option RAM I/F

Detailed

Descriptions

ROM

Flash

Program ROM I/F

ROM

Flash

Font

ROM

Option Bus I/F Option Bus I/F

Video I/F

CPU

R4310

ASIC

ROCKY R

IEEE1284 I/F

G048O702.WMF

2-3

DETAILED DESCRIPTIONS 30 June 2000

2.2.3 FUNCTION OF E ACH DEVICE

Device Function

CPU VR4310-177 (177 MHz)
ASIC ROCKY R This ASIC controls the following:

• Memory mapping

• Reset

• DRAM

• Data r eceived from the parallel

• Video DMA

• PvDMA

• Interrupt

• Serial communication with engine

• IEEE1284 interface

• Timer

•

I/O Port

FLASH ROM Stores program (2 MB) The flash ROM is programmable via an

IC card.

NVRAM
FONT ROM Stores internal printer fonts.
Program ROM Ricoh-Script 2 Emulation Module
DIP SW

Stores the initial settings and printer parameters.
(8 KB EEPROM)

(One 64-Mbit mask ROM)
The emulation module is programmable by IC card.

12345678

OFF

SW No. Setting Content

1OFF
2ON

3-8 OFF

Do not touch these switches in the field.

G048O708.WMF

Video I/F Interface the controller with the printer engine.
IEEE1284 I/F

Provides an interface that connects to a local host (IEEE1284
compliant).

Option Bus I/F Two slots; each can hold either an optional network interface or

a parallel interface board. You cannot install two boards of the

same type.
Option RAM I/F A slot for accommodating the memory.
IC Card Accommodates an IC card to upgrade firmware.

2-4

30 June 2000 DETAILED DESCRIPTIONS

2.3 PRINT DATA PROCESSING

2.3.1 GRADATION & PRINTABLE DATA

The image can be printed with 1 bit or 2 bits (Default) in 600 dpi. However, a page
cannot be printed and the job is automatically canceled if the memory for image
processing overflows while converting the image data to bitmap format. This may
happen depending on the mode selected or the image data size.

If the memory overflows, gradation settings in the driver require changing by
printing the error message.

The printable size (combination of resolution, gradation and page size) is as
follows:

Detailed

Descriptions

2-5

DETAILED DESCRIPTIONS 30 June 2000

2.3.2 IMAGE DATA PROCESSING FLOW

IPDL-C Driver

BG/UCR

CMYK 8bit

Gamma

Correction

CMYK 8bit

Maximum

Amount

Toner Control

Dithering

CMS

Controller

CMYK 8bit

Gamma

Correction

Table

Maximum

Amount Value

(for service)

PS Driver

RGB 8bit CMYK 8bitRGB 8bit

RPS2 Module

(including CMS)

BG/UCR

Manual Gamma

Correction

CMYK 1/2bit

4bit Expansion

CMYK 4bit

MCU

1/2bit

Text/Photo

Dither

Operation Panel

Printer Engine

G048O706.WMF

2-6

30 June 2000 DETAILED DESCRIPTIONS

IPDL-C (Intelligent Page Description Language for Color)

The image data received from an
application is separated into three
elements: text, graphics, and
images. Then, the data for each
element is converted to IPDL-C.
The data converted is not done for
the whole page at once. Each
band (area specified) is
independently processed (banding
processing) for the data
conversion as shown in the figure.

The IPDL-C conversion from each
element is stored in free memory
and converted to bitmap data.
Bitmap data is compressed and
stored into the band pool memory ,
DRAM.

After data processing is complete,
the controller sends the
decompressed data to the printer
engine and the engine starts
printing.

APPLICATION

What is IPDL-C....

GDI

TEXT

What is IPDL-C....

IPDL-C

IMAGE

IPDL-C

GRAPHICS

IPDL-C

Detailed

Descriptions

DRIVER

Banding processing

(Converted to IPDL-C)

Free Memory

Converted from
IPDL-C to bitmap
format

CONTROLLER

Band pool memory

Compression

Compressed bitmap data

G048O707.WMF

2-7