Ricoh ap305 Service Manual ap505c

FRESA PS (G024)

SERVICE MANUAL

[Controller]

IMPORTANT SAFETY NOTICES

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

Macintosh and EtherTalk are registered trademarks of Apple Computer, Inc.
PostScript is a registered trademark of Adobe System Inc.
PCL is a registered trademark of Hewlett-Packard Company.
NetWare is a registered trademark of Novell, Inc.
Ethernet is a registered trademark of Xerox Corporation.
Token Ring is a registered trademark of IBM 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 SPECIFICATIONS.................................................................................... 1-1

1.2 LAYOUT ................................................................................................... 1-2

2. FUNCTIONAL OVERVIEW .........................................................2-1

2.1 BLOCK DIAGRAM AND FUNCTIONS...................................................... 2-1

CPU ..................................................................................................... 2-1

Memory................................................................................................ 2-1

DRAM .................................................................................................. 2-2

SRAM................................................................................................... 2-2

NVRAM Functionality........................................................................... 2-2

Fiery Rip Chips (EFI ASICs)................................................................. 2-3

Real Time Clock................................................................................... 2-3

2.2 PRINT DATA PROCESSING.................................................................... 2-4

2.3 BUILT-IN COLOR MANAGEMENT .......................................................... 2-5

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

4. SERVICE TABLES AND PROCEDURES...................................4-1

4.1 DIAGNOSTICS MODE............................................................................. 4-1

4.1.1 OVERVIEW ..................................................................................... 4-1

Map of the Diagnostic Menu ................................................................ 4-1

4.1.2 RUNNING THE DIAGNOSTICS ...................................................... 4-2

Basic Procedure................................................................................... 4-2

Using the Custom Diagnostics Set....................................................... 4-3

Diagnostic Test Result Display............................................................. 4-4

Exit Custom Menu................................................................................ 4-4

4.1.3 CONTENTS OF INDIVIDUAL DIAGNOSTIC TESTS ...................... 4-5

IDE Diagnostic Test ............................................................................. 4-5

Ethernet Diagnostics............................................................................ 4-6

RAM Diagnostics.................................................................................. 4-7

Video Chip Diagnostics........................................................................ 4-8

Boot ROM Diagnostics......................................................................... 4-8

Firmware Diagnostics........................................................................... 4-8

I2CEEPROM diagnostics..................................................................... 4-8

4.2 BOOT ROM MENU................................................................................... 4-9

4.2.1 PURPOSE OF THE ROM MENU.................................................... 4-9

Entering the Boot ROM Menu.............................................................. 4-9

Contents of the Boot ROM Menu......................................................... 4-9

Exiting the Boot ROM Menu................................................................. 4-9

4.2.2 NAVIGATING THE MENU............................................................. 4-10

Boot ROM menu map ........................................................................ 4-10

Key Usage in the Main Menu............................................................. 4-11

Key Usage in each Menu Item........................................................... 4-11

1

4.2.3 DISPLAYING VERSION INFORMATION...................................... 4-11

4.2.4 INSTALLING SOFTWARE UPGRADES........................................ 4-12

Preparation ........................................................................................ 4-12

Procedure .......................................................................................... 4-12

Recovery Mechanism......................................................................... 4-12

4.2.5 FORMATTING THE HARD DISK................................................... 4-13

Procedure .......................................................................................... 4-13

4.2.6 CHANGING THE ETHERNET MAC ADDRESS............................ 4-13

Preparation ........................................................................................ 4-13

Procedure .......................................................................................... 4-13

4.2.7 BRAND NAME SELECTION.......................................................... 4-14

Preparation ........................................................................................ 4-14

Procedure .......................................................................................... 4-14

4.2.8 CLEARING THE NVRAM PARAMETERS..................................... 4-14

Procedure .......................................................................................... 4-14

4.3 SERVICE MODE.................................................................................... 4-15

4.3.1 OVERVIEW ................................................................................... 4-15

Password........................................................................................... 4-15

Service Menu Map............................................................................. 4-15

Entering the Service Menu................................................................. 4-15

4.3.2 PRINT SERVICE INFORMATION LIST......................................... 4-16

4.3.3 PRINT COLOR CHART................................................................. 4-17

4.3.4 CLEAR FUSER CTR ..................................................................... 4-17

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

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

6.1 CONTROLLER BOARD REPLACEMENT................................................ 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...................................................... 7-3

7.3 ERROR MESSAGES................................................................................ 7-4

7.3.1 OVERVIEW ..................................................................................... 7-4

7.3.2 CONTROLLER DIAGNOSTICS ERRORS ...................................... 7-5

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

7.3.4 ENGINE SERVICE CODES............................................................. 7-7

2

12 May, 1999 OVERALL MACHINE INFORMATION

1. OVERALL MACHINE INFORMATION

1.1 SPECIFICATIONS

Page Description Language: Adobe PostScript 3

PCL 5e/5c compatible
Printer Driver Platform: Macintosh, Windows 95/98, Windows NT4.0
Resolution: 600 dpi
Gradation Mode: 2 bits/pixel
Interface: IEEE1284 Compatible, Nibble or ECP mode

Ethernet 10BaseT/100BaseTX, 10Base 5
Network Protocol: NetWare 3.10, 3.11, 4.X, IPX/SPX

EtherTalk System 7 and later

TCP/IP, SNMP, ARP, UDP
Frame Types: 802.2, 802.3, SNMP, Ethernet-II, Ether net SNMP
Printing Services: LPD (Line Printer Daemon)

Pserver (Print Server)

PAP (Printer Access Protocol)

SMB (Server Message Block) over TCP/IP

Overall

Information

Font: 136 PostScript fonts

35 Intelli fonts, 10 TrueType fonts, and 1 bitmap

line printer font for PCL5c
Memory: Standard 32MB
DIMM Slots: 2 (for optional memory)
EIDE Interface: 1 (for optional HDD)
Options: 32/64MB DIMM

2.5-inch 1.6-GB hard disk drive

1-1

LAYOUT 12 May, 1999

1.2 LAYOUT

2

1

1. Controller

2. MCU

G024O011.WMF

1-2

12 May, 1999 FUNCTIONAL OVERVIEW

2. FUNCTIONAL OVERVIEW

2.1 BLOCK DIAGRAM AND FUNCTIONS

CPU

MIPS R4700

Memory
Controller
ASIC (DX)

Video Control

ASIC (VX)

IDE

Controller

I/F Control

ASIC (IX)

Power

Supervisor

On Board

Flash ROM

(Boot Code)

SDRAM

Flash ROM

4 DIMM Slots

PCI

Connector

Engine I/F

Connector

IDE HDD

Connector

IEEE 1284

Connector

System I2C

EEPROM

Detailed

Descriptions

Token Ring

Card (Option)

Ethernet RJ45

Ethernet

Controller

Connector

Ethernet AUI

Connector

G024C503.WMF

CPU

This is a MIPS R4700 (133 MHz).

Memory

There is a proprietary memory ASIC that supports up to 8 DIMMs, up to 32 MB of
boot PROM or flash memory. The ASIC can support burst accesses for 8 or 64 bit
wide PROMs.

However, this controller only supports 4 DIMMs. Three of these are for optional
memory, and one is for the flash/mask ROM that holds internal fonts.

2-1

BLOCK DIAGRAM AND FUNCTIONS 12 May, 1999

DRAM

The Memory ASIC supports industry standard synchronous DRAM DIMMs for
optional printer memory (see the previous page).

The R4700 bus is 64 bits wide. Architecturally, the system can support up to 256
bytes of DRAM and 8 DIMM slots (64 MB DIMMs will be supported when
commercially available).

SRAM

The SRAM is used for processing print data.

NVRAM Functionality

The NVRAM holds printer parameters that must be maintained across power
cycles. NVRAM space is in the order of 32KB.

The NVRAM consists of 1 MB of flash memory soldered to the motherboard.

2-2

12 May, 1999 FUNCTIONAL OVERVIEW

Fiery Rip Chips (EFI ASICs)

The three ASICs (designed by EFI) are responsible for the high-speed and
performance of the controller. They are as follows:

Memory ASIC (DX3)

This provides high speed interfaces between the CPU, memory, and PCI bus. The
DX3 supports 64-MB DRAM DIMMs.

IO ASIC (IX)

This supports the internal and external I/O interfaces including:

•

PCI direct memory access

•

User interface (front panel)

•

IEEE 1284 compliant parallel port (Centronics, Nibble, ECP)

•

Generic synchronous serial interface

Video ASIC (VX)

The video ASIC is responsible for:

•

PCI direct memory access

•

Decompression

•

Video interface to the engine

All three ASICs interface to a high speed PCI bus (64 bits wide) and comply Rev

2.1 of the PCI specification.

Real Time Clock

The controller does not have a real time clock.

Detailed

Descriptions

2-3

PRINT DATA PROCESSING 12 May, 1999

2.2 PRINT DATA PROCESSING

Drivers Connectivity

PostScript
generation

PCL

generation

Ethernet

Parallel

IO/Print/

Device Mgr

Spooling, PDL

switching

PDLs Compression Page Mgr

DSC

parsing

PostScript

PJL parsing

PCL 5e/5c

Page

Compression

Page

Compression

Engine loading

The key roles of each part of the print system are outlined below.

•

The

drivers

are responsible for generating the page description on the host

system and for transmitting data to the printer.

•

I/O manager

The

mediates the connection between the parallel port or

network interface and establishes a device or print manager connection.

•

print manager

The

is responsible for spooling the job (if appropriate) and for

feeding jobs to the correct PDL interpreter.

•

PDL interpreters

The

are responsible for turning page descriptions into

rendered pages and for parsing job management comments.

•

•

compression

The

page manager

The

subsystem manages compressed pages in memory.

coordinates pages for sending to the engine for the most

efficient printing, finishing, and accessory handling.

•

The

video

subsystem is responsible for decompressing pages and feeding
the engine with appropriate engine signals. The video subsystem also
handles certain print quality processing functions.

Finishing,

Video

Mgr

Decomp,

Video

G024C504.WMF

2-4

12 May, 1999 FUNCTIONAL OVERVIEW

2.3 BUILT-IN COLOR MANAGEMENT

This controller has a full complement of built-in color management technologies.

Component Description Location/Platforms

PostScript color

rendering

dictionaries

(CRDs)

Press simulation

control

Device profiles

CRDs optimized for photos, graphics,
presentation objects;
plain paper/transparency media types

Lookup tables to simulate density
characteristics of offset printing processes

ColorSync 2/ICM profiles compatible with
Macintosh and Windows color
management systems

In controller
ROM/Flash memory

Controller SRAM
Macintosh/Windows

95 and 98

Detailed

Descriptions

2-5