3.2.Main CPU PC Board (FFPWB0665 for DP-150FX/FP) .......................................................... 66
Main CPU PC Board (FFPWB06651 for DP-150A)
Main CPU PC Board (FFPWB06652 for DP-130P/150P)
Main CPU PC Board (FFPWB06653 for DP-150PA)
3.3.Main CPU PC Board (FFPWB06641 for DP-150/130) ........................................................... 87
3.4.Control Panel PC Board (FFPWB0667 for DP-150/130) ........................................................ 96
Control Panel PC Board (FFPWB06671 for DP-150A/150P/150PA/130P)
3.5.Control Panel PC Board (FFPWB0668 for DP-150FP/FX)................................................... 100
3.6.CCD PC Board (FFPWB0666) ............................................................................................. 104
3.7.LCE PC Board (DZEP000441) ............................................................................................. 107
3.8.Main LVPS PC Board (FFPWB06691 for North America)..................................................... 109
3.9.Main LVPS PC Board (FFPWB06692, DP-150 except North America).................................114
3.10. Main LVPS PC Board (FFPWB06694, DP-150A/P/FP except North America)......................119
3.11. Main LVPS PC Board (FFPWB06695 for Taiwan) ................................................................ 124
3.12. G3B PC Board (FFPWB06711) ............................................................................................ 129
Note:
V model: DP-130/150P model: DP-130P/150PA model: DP-150A
PA model : DP-150PAFP model : DP-150FPFX model : DP-150FX
65
3
1System Description
1.1.Electrical Circuit Explanation
1.1.1. Block Diagram
Scanner
Lamp
Inverter
LM
DRAM8MBDRAM8MB
5V2
3.3V
DRAM BOARD
1284
IF
CCD
CCD PC Board
HPSN
GA1
GA2
DRAM16MB
PCSN
3.3V
3.3V
Sort
Amp
12V
5V2
ADC
3.3V
IEEE1284
5V1
RST
-12V5V2
5V1
GA3
12V
SRAM
128KB
Printer
5V2
CODEC
PM2
5V2
Program
2MB FROM
5V2
Program
2MB FROM
5V2
SRAM
32KB
5V2
SRAM
32KB
5V2
CPU
SH2
SH7041
Processor
28 MHz
Control Panel
5V25V1
Control Panel
5V2
RST
Energy Saving SW
24V12V
5V2
D/A
Print
5V1
CPU
TMP86CH06U
LCD
5V2
ADF
(for DP-150A/PA/FP/FX)
AFOSN
SOL
Laser Safety
SW
HVPS
MM
Paper Feed Unit
PFOSN
FUOSN
TH
Fuser Lamp
ADF
PESNRRSNPFSNPFOSN
APC
TESN
NDSN
FM
TS
SOL
5VLD
LSU
LD
PESNRRSN PFSN
HPESN
DOSN
LVPS&ACD
• +5V1
• +5V2
• 3.3V
• +12V
• -12V
• +24V (SVP)
• +24V(PVP)
PM
SM
Drum
Discharge
Lamp
SOL
SOL
SOL
SP
5V2
FAX
2MB FROM
Program
512KB FROM
MODEM
TR88017
Analog
Transformer
(for DP-150FP/FX)
DP Signal
NCU
DSP
MN195004
SRAM
32KB
PC
FAX
16Hz Detected
5V1
FAX MEMORY IF
5V2
CODEC
MN86064
Telephone Line
5V2
FAX Memory
2 or 4 FROM
4
ADU (for DP-150FX)
SOL
SOL
DXISN
2nd Paper Feed Module
SOL
PESNPFSN
SOL
DXOSN
PFOSN
1.1.2. Image Data Circuit
The Image Data Circuit is independent of System circuit from Page Memory / Sort Memory circuit due
to high speed scanning and printing. As a result of this, all image data is managed by the Image Data
circuit and only coded data is transferred to the System Data BUS.
CCD
Amp
ADC
(IC20 ,21)
Page Memory
SDRAM
8MB
(IC27)
DRAM BORD
(CN27)
8MB
GA1
(IC7)
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
BUF
(IC11)
Control &
SYSTEM DMA BUS
CODEC
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
LSU
BUF
(IC35)
IEEE1284 I/F
CONECTER
(CN26)
F-ROM
2 or 4 MB
5
1.Memory Control Gate Array
GA2 (IC30) is a Memory Controlling Gate Array.
•DMA Control
It is used to transfer data between the following devices.
Scanning Control LSI (GA1)
Page Memory (S-DRAM)
CODEC (PM22)
Page Memory (S-DRAM)
System Memory (S-DRAM)
•Rotation Management
The rotation is carried out by the hardware when transferring the route.
•S-DRAM Control
It generates S-DRAM Control Signal for Page memory and Refresh Control when the power is ON.
It does not backup the Page Memory.
•Picture Quality Correction Circuit (Smoothing)
When the receiving data (8 dot/mm x 3.85, 7.7, 15.4 line/mm) is converted to 600 dpi x 600 dpi
resolution, the current printed data and 15 surrounding printed data are sent to the Smoothing ROM
through 16 bit line and the ROM sends smoothed dot data. As a result of this operation, the distorted
curved lines are smoothed.
•Gray-Level Enhancement
This control function allows expressing higher-level scales than using a recorded signal, by reducing
line density into 1/2 or 1/3 on the original after binary-to-multiple value conversion. This capability
increases reproduction of grayscale images such as photographs.
•Reduction / Enlargement Control Circuit
This circuit is used to process the received data so that it fits on the recording paper, according to
the Fax Parameter Settings.
•Synchronization Control Circuit
This circuit is used to synchronize the output of the recorded data with the horizontal synchronizing
output signal from the printer for each line. It controls the resolution of the printer as follows.
16 dot/mm x 15.4 line/mm :Report data
600 dpi x 600 dpi:Copy & Printer Interface
6
•FIFO/S-RAM Control
Picture Edit Coding Gate Array uses FIFO for Smoothing & Laser pulse width control, and S-RAM
for Smoothing Data and interface controls.
•S-DRAM Control
It generates S-DRAM Control Signal for SORT Memory and Refresh Control when the power is ON.
It does not backup the Page Memory.
2.Optional Memory for Image Side
The Optional Memories are:
•Memory PC Board (SODIMM) → DRAM Card (16 MB) for Sort memory
Install the DRAM Card for Sort memory to CN11 (FX/FP Model)/CN27 (A/PA Model) on the SORT
PCB.
7
1.1.3. Fax System Control Circuit
The System Control Block consists of the following IC that control the general Fax functions.
1.System CPU
The System CPU (SH7041) is a 32-bit RISC (Reduced Instruction Set Computer) type of CPU and
DMA Control, Serial Communication Port, Timer Control, Interrupt Control, DRAM Control, and I/O
Port are integrated into 1 chip. Mask ROM (64k byte) is already installed and it controls the Monitor ,
High Speed managing Task and Boot Programming.
•DMA Control
It has a 4ch DMA Control and is used to transfer data between the following devices.
Communication CODEC (PM22) ←→ Image Data Memory (DRAM)
•Serial Communication Port
It has a 2ch Serial Communication Port and is used to interface the following devices.
CPU ←→ Sub-CPU (Energy Saving Microprocessor)
•Timer Control
It is used to program the standard timer.
•Interrupt Control
It controls receipt & transfer to CPU the interrupt from Modem, LSI, Option, etc.
•DRAM Control
It generates DRAM Control Signal and Refresh Control when the power is ON.
•I/O Port
It is used to control lines and reset control around LSI.
2.System Memory
This system consists of the following memory.
•F-ROM (IC) → F-ROM (2MB) for programming
•F-ROM (IC) → F-ROM (2MB) for programming
The program is booted from F-ROM Card.
•F-ROM (IC) → Image Data Memory (2MB)
During a blackout, the image data is backed up.
•DRAM (IC) → Work RAM, buffer (8MB) for transfer and reception
3.Optional Memory for System Side
The Option Memories are:
•F-ROM Card (2/4MB) → Image Data Memory for expansion
During a blackout, the image data is backed up.
It is possible to rewrite the program by rebooting the main program from this card.
8
1.1.4. Scanning Circuit
1.Scanning LSI
GA1 (IC7) is a Scanning LSI and generates Shading Correction, MTF Correction, Reduction/
Enlargement, and Gray Scale Error Diffusion. The Image Signal is converted to binary signal and
transported.
2.TX Motor Drive Circuit
TX Motor Drive Circuit is controlled by SLA7032M and SCN PCB IC19, ADF PCB IC15.
1.1.5. Coding
Coding and decoding (MH/MR/MMR/JBIG conversion) is carried out by the hardware codec device.
There are 2 codecs, Image Codec and Communication Codec.
•PM-22 (IC32) : for Image Codec
It codes or decodes the data transferred from Sort memory. When copying, this codec codes from
the Image data to JBIG data. When communicating, this codec codes from Image data to MMR
data.
1.1.6. Sleep Mode
This function reduces the power consumption in standby mode. During Sleep Mode, power is supplied
only to the Energy Saver Lamp to keep it at a steady ON condition, to the circuit that monitors incoming
Ringing signals and to circuits that maintain Deferred communications. The power is recovered only
when an incoming Ringing signal is detected, the time to perform a Deferred communication has
lapsed or the Energy Saver key is pressed.
Recovers from Sleep Mode
No.ItemRecovers fromRemark
Sleep Mode
1When Energy Saver key is pressedYes
2Deferred Communication time is lapsedYes
3Time for Deferred CommunicationYes
4Original Sensor is actuatedYes
5Ringing signal detectedYesNot 1300Hz detection
6Off-Hook (External telephone or Handset)Yes
7When printing from a PCYes
Not Document Sensor with Flatbed
9
1.1.7. Signal Routing
1.Copy
Amp
CCD
(IC20,21)
ADC
GA1
(IC7)
BUF
(IC11)
LSU
Control &
SYSTEM DMA BUS
CODEC
Page Memory
SDRAM
8MB
(IC27)
2.Scan into Memory (FAX)
Amp
CCD
DRAM BORD
8MB
(CN27)
ADC
(IC20 ,21)
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
GA1
(IC7)
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC11)
Control &
SYSTEM DMA BUS
BUF
(IC35)
IEEE1284 I/F
LSU
CONECTER
(CN26)
Page Memory
SDRAM
8MB
(IC27)
DRAM BORD
8MB
(CN27)
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
F-ROM
2 or 4 MB
10
CODEC
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC35)
IEEE1284 I/F
CONECTER
(CN26)
3.File Print from Memory (FAX)
ADC
Amp
CCD
(IC20,21)
GA1
(IC7)
BUF
(IC11)
LSU
Control &
SYSTEM DMA BUS
CODEC
Page Memory
SDRAM
4.Memory Transmission
Amp
CCD
8MB
(IC27)
DRAM BORD
8MB
(CN27)
ADC
(IC20,21)
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
F-ROM
2 or 4 MB
GA1
(IC7)
BUF
(IC11)
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC35)
IEEE1284 I/F
LSU
CONECTER
(CN26)
Page Memory
SDRAM
8MB
(IC27)
DRAM BORD
(CN27)
8MB
NCU
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
MODEM
F-ROM
2 or 4 MB
Control &
SYSTEM DMA BUS
CODEC
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC35)
IEEE1284 I/F
CONECTER
(CN26)
11
5.Memory Preception
Amp
CCD
ADC
(IC20 ,21)
GA1
(IC7)
BUF
(IC11)
LSU
Control &
SYSTEM DMA BUS
CODEC
6.Printing out
CCD
Amp
Page Memory
SDRAM
8MB
(IC27)
DRAM BORD
(CN27)
ADC
(IC20 ,21)
8MB
NCU
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
MODEM
GA1
(IC7)
BUF
(IC11)
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC35)
IEEE1284 I/F
LSU
CONECTER
(CN26)
Page Memory
SDRAM
8MB
(IC27)
DRAM BORD
(CN27)
8MB
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
12
Control &
SYSTEM DMA BUS
CODEC
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC35)
IEEE1284 I/F
CONECTER
(CN26)
7.Scaner Input
CCD
Amp
ADC
(IC20,21)
GA1
(IC7)
BUF
(IC11)
LSU
Control &
SYSTEM DMA BUS
CODEC
Page Memory
SDRAM
8MB
(IC27)
DRAM BORD
(CN27)
8MB
GA2
(IC30)
SDRAM
8MB
(IC28)
Work Memory
F-ROM
2 or 4 MB
PM22/33
(IC32)
CPU
SH-2
(IC1)
GA3
(IC34)
BUF
(IC35)
IEEE1284 I/F
CONECTER
(CN26)
13
1.1.8. Modem and Peripheral Circuit (Optional FXB PCB)
This circuit consists of DSP, ROM, S-RAM, Analog Front End, Analog Master and peripheral circuitry.
This modem conforms to ITU-T, V.34, V.33, V.17, V.29, V.27ter, V.21 channel 2 (FSK), T.4, and T.30.
Macro order of DSP is sent from ROM to S-RAM and is outputted. DSP transfers/receives data from
Analog Front End and serial communication. Analog Front End communicates with the line through
Analog Master.
IC904
S-RAM
To Line
To Speaker
IC905
Analog
Master
IC906
Analog
Front
End
IC901
Modem
CPU
DSP
IC902
ROM
Modem
Program
System BUS
Modem Circuit Block Diagram
1.Receive Signal Control Circuit
This circuit consists of Operational Amplifier , Analog Master , and its peripheral circuit. On the received
signal from a line transformer (HYBSR), diffraction of signal transmission is attenuated using the
hybrid circuit, and the frequency of signal is limited to a certain band using a second LPF.
The signal is input to the analog front end via the analog SW for switching over between HYSIG and
the gain switching amplifier . 1300-Hz signal and remote signal are detected from HYSIG by switching
SW1.
2.Transmission Signal Control Circuit
This circuit consists of Operational Amplifier, Analog Master, and its peripheral circuit. On the signal
transmission from the analog front end, frequency of the signal is limited to a certain band using a
second LPF, and diffraction of the signal to a reception circuit is attenuated using the hybrid circuit.
The signal is sent out from the line transformer.
14
3.Line Monitor Circuit
The Line Monitor Circuit consists of an operational amplifier, analog master and its peripheral circuits.
Its function is to monitor the dial tone, DTMF tone, response signals, etc. over the speaker. It also
sounds the output of the key touch tones, alarm tones, etc. from the panel CPU over the speaker. The
received signal from the Ain (M) passes through an AGC circuit and is conditioned by the Analog FrontEnd DSP and is then input to the Analog SW2 for volume control. The signal is then input to the
Speaker Amplifier, where it is amplified to a level sufficient to drive the speaker. The key touch tones
and Buzzer Signals from the panel are input to the Analog SW2 for volume control and then input to the
Speaker Amplifier. The monitor tone from the phone line and the buzzer tone from the panel can be
adjusted from the Control Panel.
HYSIG
Analog Front-End DSP
Ain(M)
IC906
HYBSR
RX signal
Analog Master
Analog SW1
Speaker
TX signal
Hybrid Circuit
Amplifier
LPF Fc:7.8KHz
LPF Fc:4.5KHz
Electronic Volume
Analog SW2
Buzzer Signal from Panel
Gain Switch
Amplifier
Aout(M)
Aout(V)
AGC
15
1.1.9. Line Control Board
The following shows a block diagram of the Line Control Board.
Line
Telephone
PC1
Off-Hook
Detector
CML
CML
PC2
Ring
Detector
for Auto Receive
+24V
CML
PLS
PLS
C5
T2
L : Off-Hook
H : On-Hook
nHKOFF 9
PC1
nCTON
PC2
L : Ring In 10
CMLD 5
Q1
PLSD 6
Q2
[DZYNA1435*]
HYBSR
GND
+5V
+5V
H : FAX Side
L : Telephone
H : Make
L : Break
CN7
HYBSR
CML
DC
RL4
HOLD
C5
L : Off-Hook
H : On-Hook
+24V
CML
RL4
nHKOFF 9
nCTON
L : Ring In 10
H : FAX Side
L : Telephone
pCMLD 5
H : Make
L : Break
pPLSD 6
AGND
MODEM
+5V
IC
< MDM >< LCE >
CML
IC1
Line
MODEM
PC1
Ring
Detector
IC
< MDM >< LCU >
[DZEP000441]
The Ring Detector consists of a photocoupler, PC2 (PC1 for LCE), and its peripheral circuits. The
ringing signal is a half-wave rectifier in the Ring Detector, and transferred through the nCTON signal
line to the IC on the SC PC Board. The IC observes the signal to distinguish from signals caused by
chattering.
The Off-Hook Detector (External Telephone) circuit consists of the photocoupler , PC1 (IC1 for LCE),
and its peripheral circuits. When PC1 detects loop current flow, it emits a Low active output signal
(nHKOF) to the IC which monitors it for a specified time. If the IC detects no change in the Low signal
level, it determines that the External Telephone is Off-Hook.
16
Dial Pulse Generator
The circuit consists of the CML relay, PLS relay and their peripheral circuits. This circuit generates
dial pulses. The CPU PC Board controls all dial pulse generation sequences. It turns relay CML and
PLS ON and OFF through the DZZSP58025. The status of the relays during dialing is shown below.
When the absence of the terminating message is confirmed by the Off-Hook detector , the CPU turns
CML relay ON to develop loop status (DC loop). After a few seconds, the CPU turns the PLS relay
On and Off to generate dial pulses, making and breaking the loop.
Dial Pulse
CML Relay
break
make
break
PLS Relay
make
Speech
condition
First
digit
Speech
condition
Second
digit
Speech
condition
Line release
break
Prepause
Line status
make
Inter-digit
pause
DTMF Tone Generator
The circuit is incorporated in the MODEM PC Board. The DTMF tone is conveyed to the telephone
line using the same route as the facsimile signal. The DTMF tone selection is controlled by the CPU.
The relay status during dialing is shown below.
PLS Relay
CML Relay
Line release
Line status
DTMF Tone
break
make
break
make
break
make
Speech
condition
Prepause
First
digit
Speech
condition
Inter-digit
pause
17
Second
digit
Speech
condition
DTMF signal
1.1.10. Laser Printer Motor Drive Circuit
1.System Description
It consists of 16 bit CPU TMP86CH06U, FROM for programming, peripheral I/O. The CPU controls
mechanism of Laser Printer, Fuser Lamp temperature, and Laser Unit.
IC1
CPU
SH2
SH7041
Processor
IC24
CPU
TMP86CH06U
FROM
IC2,42
GA3
IEEE1284
IC34IC35
1284
IF
GA1
IC7
LDSW
TH
5VLD
LSU
PM
LD
APC
MM
Motor
Fuser Lamp
TS
LVPS
Drum
2.Printer Motor Drive Circuit
This Printer Motor is a Brushless DC Motor.
nMMCNT: When the signal level goes Low, the Printer Motor starts rotating.
nMMLCK: Rotation status signal for Printer Motor. When the Printer Motor reaches a constant
speed, nMMRDY signal level goes Low.
The Printer Motor is powered by +24 VDC supply. When the interlocks are open, the +24 VDC
supply is cut off and the Printer Motor stops rotating.
IC1
CPU
SH2
SH7041
Processor
GA1
IC7
111
144
DT6
nMMCNT
5V
CN7
2
1
nMMLCK
18
3.Fuser Lamp Drive Circuit
It consists of 1 Fuser Lamps and Fuser Lamp is controlled by two HTC PC Boards.
The Fuser Lamp is powered by 100 VAC. When the CN7, Pin 4 (HTCNT) on the LVPS PCB goes
LOW, the Fuser Lamp turns ON. This lights up the PC5 LED and activates the TR1 photo-triac, and
100 VAC is sent to the Fuser Lamp.
CN3
to CPU
Board
CN7
4
5V
AC1
L4
PC5
TR1
1
to Fuser Lamp
2
AC2
4.Interlock Safety Circuit
This safety circuit turns OFF the +24 VDC and +5 VDC supply voltages when the Printer Cover is
opened. When the Printer Cover is opened, the microswitch(es) on the LVPS Board are de-actuated, turning OFF +24 VDC to the Printer Motor Drive Circuit, the HVPS, the Paper Feed Solenoid
Circuits, the Clutch Drive Circuit, and the Laser Driver Circuit on the Laser Unit.
LVPS
SW3
SW2
SW4
24V
5V
CN5
1
to CPU PC board
CN6
1
to CPU PC board
19
5.LSU Control Circuit
The laser control signals are described below.
Actual data is sent from CPU PCB to LSU.
nVIDEO: Actual data is outputted by these 2 signals.
ADJUST : Laser Power Sample/Hold Timing Signal.
nHSYNC : This horizontal synchronization signal transmitted from the Beam Detection Sensor
sets the horizontal position of the laser beam as it crosses the OPC Drum.
ENABLE : The LSU is activated when this output signal is LOW. If an error occurs, the nLDON
output signal level goes High and the LSU is deactivated.
PMCLK: This is the Polygon Motor Drive Clock.
nPMLCK : When the Polygon Motor speed is constant, the nPMRDY is at a Low output signal
level.
nPMCNT : This is the Polygon Motor Control Signal. The Polygon Motor rotates when the nPMON
output signal level is LOW.
IC1
CPU
SH2
SH7041
Processor
GA1
IC7
143
90
113
DT5
DT22
IC11
5V
nPMCNT
PMCLK
nPMLCK
ENABLE
nVIDEO
ADJUST
CN4
11
13
12
5
6
7
IC13
20
nHSYNC
4
1.2.Power On Initial Flow Chart
1.2.1. Fax
0
Boot Program in CPU Start
Initial Flow
Power ON
Hardware Reset
* Check outside view of SC PCB before checking signal.
Especially check whether CN903 (FROM Card) pins
short or not.