Ricoh AFICIO 200 Service Manual

PRINTER CONTROLLER

(Machine Code: A643)

August 29th, 1996 Final Version

29 August 1996 OVERALL INFORMATION

1. OVERALL INFORMATION

1.1 INTRODUCTION

1.1.1 Hardware

The controller adds printer functions to the machine. The controller has a PCL 5e command interpreter, and the optional printer

enhancement unit has a PostScript Level 2 command interpreter. A hard disk is also available as an optional device for the printer; it is used for

storing the PostScript fonts (downloaded from a PC or Macintosh) and the print data for sorting print outs.

The controller has 2 slots for SIMM modules. Up to 32 MB (16 MB x 2) of memory can be installed to improve the printer performance. This will allow for for faster image processing, and complex graphics printing without print over run errors.

1.1.2 Software

The following software (driver and utilities) are provided for controlling the printer.

Software Function

HostPanel for DOS

WinPanel for Win 3. 1, Win 95

PCL driver for Win 3.1, Win 95

PS2 Driver for Win 3.1, Wi n 95 PPD file for Macintosh PostScript Printer Description file.

Gives the user a way to change printer set tin gs, and a way to monitor the pri nt er stat us under DOS on a PC.

Allow s t he user to m onitor the print er statu s on a PC with Windows 3.1 or W indows 95 (two separate programs).

Printer driver for using the machine in PCL 5e emulation mod e (tw o separate drivers).

Printer driver for using th e m achine in PostScript Level 2 emulation mod e. (tw o separate drivers)

OVERALL INFORMATION 29 August 1996

1.2 CONTROLLER SPECIFICATIONS

Item Specifications

Resolution 300 x 300 dpi, 600 x 600 dpi (selectable) Smoothing Yes Toner Saving Mod e Yes

2 MB (Standard)

RAM Capacity

Emulation

Resident Fonts

Paper Size

Host Interface

Printer Controller Optional Units

4 MB (with optional pr i nt er enha ncement unit) 2 SIMM Slots for 1/2/4/8/16 MB

Printer Controller:

PCL 5e (LaserJet 4M+ )

Printer Enhancement Unit (option):

PostScript Level 2 (LaserJet 4M+) Printer Controller:

35 Intellifont fonts 10 True Type fonts 1 Bitmap font Printer Enhancemen t Unit (o pt ion) : 35 Type 1 fonts

Available from paper cas set t e:

11 x 17 (L), 8 1/2" x 14" (L), 8 1/2" x 11" (L/S), Executive (L/S), A3 (L), B4 (L), A4 (L/S), B5 (L/S), A5 (S), Folio (L), Foolscap (L), F (L), Free Size (W: 182 - 297 mm /7 .2 - 11.7" , L: 148 - 432 mm/5.8 - 17")

Available from bypas s tray :

11 x 17 (L) , 8 1/2" x 14" ( L), 8 1/2" x 11" (L), 5 1/2 x 8 1/2 (L ) , Executive (L), A3 (L), B4 (L), A4 (L), B5 (L), A5 (L), Folio (L), Foolscap (L), F (L), Postcard (L), Double Postcard (L), Com 10Env (L),Mo narchEnv (L), B5 Env (L), C5 Env (L), C6Env ( L), DLEnv (L), Free Size (W : 90 - 297 mm/ 3.5- 11.7") L: 148 - 432 mm/5.8 - 17")

Available from duplex t ra y:

11 x 17 (L), 8 1/2" x 14" (L), 8 1/2" x 11" (L/S), Executive (L/S), A3 (L), B4 (L ), A4 (L), B5 (L /S) , A5 (S) , Fo l io (L), Fo o lsc ap (L ), F (L) Note: Duplex printing is not availabl e if the bypass tray is se le cted.

Printer Controller: Bi-Centronics Parallel Interface x1 RS-232C Serial Inter fa ce x1 Printer Enhancemen t Unit (o pt ion) : Local Talk Interface x1

Printer Enhancemen t Unit Hard Disk Drive (540 MB 2. 5" IDE) Network Interface C ar d: Etnernet, Token Ring (IPX/SPX, TCP/IP)

29 August 1996 DETAILED SECTION DESCRIPTIONS

2. DETAILED SECTION DESCRIPTIONS

2.1 BLOCK DIAGRAM (OVERALL)

Printer Controller

Printer

Enhancement

Unit

LocalTalk

I/F

SIMM Slots

RS-232C Serial I/F

PC-AT CompatibleMacintosh

/VIDEO

HDD

Bi-directional

Parallel I/F

Mother

Board

BICU

/FGATE

/BD

LDDR

A643V501.wmf

The printer controller is located between the host PC and the machine, and performs the following functions.

Host Interface

•

Receives data (consisting of image data and device control codes such as tray selection, duplex print, and resolution selection)

•

Sends the machine status, such as error conditions and the paper size loaded in the trays, using the bi-directional parallel interface.

•

Handshakes with the PC

NOTE:

The printer status can be monitored only when the HostPanel or WinPanel utility is installed on the PC, and the controller and the PC are connected with a bi-centronics cable. If the utility is not installed, or the other interfaces (RS-232C or LocalTalk) are used for connection to the PC or Macintosh, this feature is not available.

DETAILED SECTION DESCRIPTIONS 29 August 1996

Internal Controller

•

Buffers data received from the PC

•

Processes the data sent from the PC and makes the video data using the PCL or PostScript interpreter accordingly (toner saving and edge enhancement functions affect the data when processing.)

•

Emulation switching (PS/PCL) if auto switching mode is selected while the printer enhancement unit is installed

•

Auto input tray switching

Machine Interface

The function of these signals are as follows.

•

Receives status data from the machine

•

Receives timing signals for horizontal and vertical image synchronization

•

Sends commands to the machine (e.g. tray selection, front panel display in printer mode)

•

Sends the video data. Note that the video data goes through the BICU, and directly drives the laser diode. That is, all of the data processing is done by the controller, and the BICU’s processing functions are not used.

29 August 1996 DETAILED SECTION DESCRIPTIONS

2.2 INTERFACE

2.2.1 Host Interface Bi-Directional Parallel Interface

A643D502.wmf

A 36 pin bi-directional parallel interface connector (female). The bi-directional parallel interface on the controller works in the 3 modes;

compatible, nibble, and ECP modes (these modes are standardized by IEEE

1284).

SIGNAL

1 /STROBE (I) /STROBE (I) HostClk (I)

2-9 DATA1-8 (I) NOT USED DATA1-8 (I/O)

10 /ACK (O) PtrClk (O) PeriphClk (O) 11 BUSY (O) PtrBusy (O) PeriphAck (O) 12 PE (O) AckDataReq (O) /AckReverse (O) 13 SELECT (0) Xf lag ( O ) Xflag (O) 14 /AUTOFEED (I) HostBusy (I) HostAcK (I) 15 NC <-- <-16 GND <-- <-17 CHASSIS GND <-- <-18 NC <-- <--

19-30 GND <-- <--

31 /INIT (I) /INIT (I) /ReverseReques t (I) 32 /ERROR (O) DataAvail (O) /PeriphRequest (O) 33 GND <-- <-34 NC <-- <-35 +5V <-- <-36 /SELECTIN (I) 1284Active (I) 1284Active (I)

STD (I/O) NIBBLE (I/O) ECP (I/O)

SIGNAL NAME

DETAILED SECTION DESCRIPTIONS 29 August 1996

RS-232C Interface

A 25 pin D-SUB female connector (ISO 2110)

PIN NO. SIGNAL NAME DESCRIPTION

2 STXD Serial transmit data 3 SRXD Serial receive data 4 +10V 6 SDSR Data set r eady

20 SDTR Data terminal ready

LocalTalk interface

1425

A643D501.wmf

An 8 pin D-SUB female connector (DIN-8).

PIN NO. SIGNAL NAME DESCRIPTION

1GND 2 HSK (I) Handshake 3 TXD- (O) Transmit data – 4 GND Signal ground 5 RXD- (I) Receive data – 6 TXD+ (O) Tra nsmi t data 7 N.C. No connection 8 RXD+ (I) Receive data +

A643D503.wmf

29 August 1996 DETAILED SECTION DESCRIPTIONS

2.2.2 Machine Interface

The pin assignment of the interface is as follows.

PIN NO. SIGNAL NAME DESCRIPTION

A1 /EBD (I) A2 EVDO (O) Binary video data. Goes through the BICU to LDDR. A3 /EVSYNC (I) A4 /ESTS (I) Status line from the machine.

A5 EC M D (O) Command line to the m ach i ne.

A6-10 VCC Power supply from the machine.

B1-3 N.C. No connection

B4 /ESBSY (O) Indicates that the controller can receive the status.

Beam detection sig nal sent from the machine. U sed for line synchroniz at i on.

Vertical gate signal m ade by the BICU according t o the selected paper si ze.

DETAILED SECTION DESCRIPTIONS 29 August 1996

2.3 BLOCK DIAGRAM (INTERNAL)

Printer Controller

Enhance

LocalTalk

I/F

Printer

Unit

ROM

RAM

D5001

Z85230

RS-232C Serial I/F

SIMM Slots

RAM

Bi-directional

D8905

NIC Connector

Parallel I/F

RAM

HDD

Connector

ROM

CPU

D9001MF

Machine Interface

A643V500.wmf

2.3.1 Printer Controller CPU

An Intel i960JF-25 RISC CPU is used. A 50Mhz oscillator is used as the clock source for both the i960JF-25 and D8905. However, the clock is used by the i960JF-25 after it is divided by 2 (25Mhz). The PST5920 is used to provide the system reset for the CPU and D8905.

+ 20 hidden pages