---------------------------------------------------------------------------Samsung SF-530 Laser Fax------------
Samsung SF-530 Fax Machine

Features

Push & Save Powerful Performance 33.6Kbps Super G3 Fax Modem 3 sec. Quick Scan Speed (SF-531P) 8ppm Printing Speed True 600dpi Printing Resolution 64 Levels Gray Scale Fax Forward Low Toner Notification Useful Telephone Feature Battery Back-up Image TCR

Specifications

Fax Modem speed Transmission Speed Compatibility Compression Code Scan Speed : : : : : 33.6Kbps Approx. 3sec ITU G3 MH, MR, MMR 6sec/page
Memory 1 Touch Dial Speed Dial : : 20EA 80EA
Battery Backup Speed (mono/colour) Zoom Range Multi Copy Scan Resolution Method Gray Scale Paper handling ASF Type : : : : : : : 8cpm 50% ~ 130% 1~99pages 200 x 200dpi CIS 64 Level BIN
Input Capacity ADF Capacity Consumables Type Yield : : : 20pages Single Cartridge 2500pages @ 5% coverage

Save Functions

Size (W x D x H) LCD
313 x 325 x 227mm 16 x 1 Characters

Please do the following before disassembling for a repair or replacement of parts.
1. Pull out paper cassette, printer cartridge installed. Especially careful not to be scratched by the surface of developer or not to expose them to light. 2. Turn the power switch off. 3. Take out the power plug, printer cable from the printer. 4. Use only the same type of part as original when replacing parts. 5. Do not force to open or fasten plastic material components. 6. Be careful that small parts such as screws should not get in the printer.
Releasing Plastic Latches
Many of parts are held in place with plastic latches. The latches break easily : release them carefully. To remove such parts, press the hook end of the latch away from the part to which it is latched.

Samsung Electronics

Precautions

1-3 ESD Precautions

Certain semiconductor devices can be easily damaged by static electricity. Such components are commonly called Electrostatically Sensitive (ES) Devices, or ESDs. Examples of typical ESDs are: integrated circuits, some field effect transistors, and semiconductor chip components. The techniques outlined below should be followed to help reduce the incidence of component damage caused by static electricity.
CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as anti-static can generate electrical charges sufficient to damage ESDs. 5. Do not use Freon-propelled chemicals. When sprayed, these can generate electrical charges sufficient to damage ESDs. 6. Do not remove a replacement ESD from its protective packaging until immediately before installing it. Most replacement ESDs are packaged with all leads shorted together by conductive foam, aluminum foil, or a comparable conductive material. 7. Immediately before removing the protective shorting material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed. 8. Maintain continuous electrical contact between the ESD and the assembly into which it will be installed, until completely plugged or soldered into the circuit. 9. Minimize bodily motions when handling unpackaged replacement ESDs. Normal motions, such as the brushing together of clothing fabric and lifting ones foot from a carpeted floor, can generate static electricity sufficient to damage an ESD.

3. Disassembly and Reassembly
3-1 General Precautions on Disassembly
When you disassemble and reassemble components, you must use extreme caution. The close proximity of cables to moving parts makes proper routing a must. If components are removed, any cables disturbed by the procedure must be restored as close as possible to their original positions. Before removing any component from the machine, note the cable routing that will be affected.
Many of the parts are held in place with plastic latches. The latches break easily; release them carefully. To remove such parts, press the hook end of the latch away from the part to which it is latched.
Whenever servicing the machine, you must perform as follows:
1. Check to verify that documents are not stored in memory. 2. Be sure to remove the toner cartridge before you disassemble parts. 3. Unplug the power cord. 4. Use a flat and clean surface. 5. Replace only with authorized components. 6. Do not force plastic-material components. 7. Make sure all components are in their proper position.
Disassembly and Reassembly

3-2 Cradle

1. Push the lever and remove the cradle as shown below.

3-3 White Roller

1. Open the OPE cover.
2. Push the bushing on the end of the Roller slightly inward, then rotate it until it reaches the slot. Then lift, the Roller out.

Bushing

Note : Check the Roller for any dirt. If dirty, wipe it off with soft cloth dampened with water. If the Roller is heavily worn, replace it with a new one.

White Roller

Control Panel

00 00000

3-4 OPE Cover
1. Pull the cover release button on both sides of the machine, and open the front cover. 4. Remove two screws securing bracket scan board, then take out the bracket scan board.
5. Unplug two connectors and one wire from the scan board.
2. Remove two stoppers holding the front cover unit and unplug one connector and one wire.

6. Lift the OPE cover.

3. Pull the bottom left end of the cover downward to unlatch the front cover unit and remove the cover from the main frame.
7. Remove the stopper holding the OPE cover.
8. Unlatch the bottom ends, then remove the OPE cover.

1. Before you remove the cap-pad, you should remove: All covers (see page 3-3, 3-5) LSU (see page 3-10) Plate upper (see page 3-12) Knock-up Assy (see above) 2. Take out the cap-pad from the main frame.

3-22 Holder-Pad

1. Before you remove the holder-pad, you should remove: All covers (see page 3-3, 3-9) LSU (see page 3-10) Plate upper (see page 3-12) Knock-up Assy (see 3-13) Cap-Pad (see 3-13)
2. Remove the holder-pad from the main frame.

3-23 Motor Assy

1. Before you remove the motor Assy, you should remove: All covers (see page 3-3, 3-9) Note : When you reassemble the motor Assy, make sure that the boss shown in the figure below fit into the corresponding screw holes on the motor Assy to allow the screws to be fastened properly.
2. Remove four screws securing the motor Assy and unplug one connector from the engine board, then remove the motor Assy.

3-24 Fan

1. Before you remove the fan, you should remove: All covers (see page 3-0) Motor Assy (see page 3-15)
2. Unplug one connector from the engine board and remove the fan.

3-25 Gear pick-up Assy

1. Before you remove the gear pick-up Assy, you should remove: All covers (see page 3-3, 3-9) 2. Release two snap-fits and remove the gear pick-up Assy from the main frame.
Note: When reassembling, make sure that the direction of the gear is correct.

3-26 Solenoid

1. Before you remove the solenoid, you should remove: All covers (see page 3-3, 3-9)
2. Unplug one connector from the engine board and remove one screw, then remove the solenoid.

3-27 HVPS Board

1. Before you remove the HVPS board, you should remove: All covers (see page 3-3, 3-9)
2. Remove three screws and one connector from the HVPS board, then remove the board.
Note : when reassembling, make sure that the terminal is five.

3-28 Hook Board

1. Before you remove the hook board, you should remove: All covers (see page 3-3, 3-9)
2. Unplug one connector from the main board and remove two screws, then remove the hook board from the main frame.

3-29 Fuser Assy

1. Before you remove the fuser Assy, you should remove: All covers (see page 3-3, 3-9) 3. Remove two screws and unlatch the fuser Assy using a proper tool.
2. Remove two wires after remove two screws from the main frame and one connector from the inter connector.

Caution: Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily.
RCV FAX LEVEL You can set the level of the receiving signal. The reception level may be too low due to the cable losses. If it is set to -43 dBm, the reception sensitivity will be between 0 and -43 dBm. If it is set to -48 dBm, the reception sensitivity will be between 0 and -48 dBm.
SILENCE TIME In ANS/FAX mode, after a call is picked up by the answering machine, the machine monitors the line. If a period of silence is detected on the line at any time, the call will be treated as a fax message and the machine begins receiving. Silence detection time is selectable between limited (about 12 seconds) and unlimited time. When '2 sec' is selected, the machine switches to receiving mode as soon as it detects a period of silence. When 'unlimited'is selected, the machine waits until the answering operation is concluded even though a period of silence is detected. After the answering operation is concluded, the machine switches to receiving mode. ERROR RATE When the error rate is about to be over the setting value, the Baud rate automatically lowers up to 2400 bps to make the error rate remain below the setting value. You can select the rate between 5% and 10%. IGNORE TONER EMP You can set this function ON if desiring to drive the engine continuously even though the life of toner is run out and it becomes Toner Empty status.
FLASH TIME Set the flash time to 80, 280, or 600 milliseconds.
4-2-3 Maintenance Options
In TECH mode, press SETUP, then press or until MAINTENANCE appears in the display. Press Start/Enter. The following technical options are available
CLEAN DRUM Use this feature to get rid of the toner remained in the development unit, so you can get a clean printout.Perform this feature if stains or specks appear on the printing materials and print quality falls. Perform this feature several times until a clean printing material appears. ADJUST SHADING Use this feature to correct the white reference of the scanner if you experience bad copy images. When using this feature, a white paper should be used to get clean copy images.
Use this adjustment feature to achieve best image (scan) quality depending on the characteristics of the CIS (Contact Image Sensor) parts. 1. Select [ADJUST SHADING] from the Service Mode. 2. Insert a clean white original [Letter Size] into the paper loading part. 3. Original is scanned if pressing the Setting button. 4. If the original scan is completed, message is displayed on the LCD window and CIS SHADING PROFILE is output. If the output image is different from the normal screen, the CIS is poor.
NOTIFY TONER LOW With this feature enabled, when the toner becomes low, the toner low information will be sent to ta specified contact point, for example, the service company. After you access this menu, select ON, and when the LCD prompts, enter the name and the number of the contact point, the customer's fax number, the model name, and the serial number. ROM TEST Use this feature to test the machine'S ROM. The result and the software version appear in the LCD display.

The Engine test mode is used to check the operation of the components related to the printer engine. The following test are available. To access the Engine Test Mode: 1. Press Setup, #, 1, 9, 3, 1 in sequence. 2. When ENGINE TEST? appears, press Start/Enter. 3. Scroll the options by pressing or repeatedly find the one you want. 4. Press Start/Enter to start the test. 5. Press Stop to exit the Engine test mode.
Caution : When you finish operating in Engine Test Mode, you must turn the power Off/On.
Engine Test Mode Options : 1. 2 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. MAIN MOTOR TEST PTL TEST FAN TEST FUSER TEST ( FUSER ON : 145C , FUSER OFF : 145C ) LSU MOTOR TEST LD(LASER DIODE) TEST HSYNC TEST (NG/OK) LSU OPERATION TEST (NG/OK) SENSOR TEST ( FEED , EXIT , PAPER EMPTY , COVER OPEN) SOLENOID TEST MHV TEST ( -1550 V ) DEV TEST ( - 430 V ) THV(+) TEST ( +1300 V ) THV(-) TEST THV TRIGGER TEST ALL FUNCTION TEST : This function is for a manufacturing press. You can test all function(1~15)
When you push the Start button, the Main Motor runs. If you push the Start button again , the current test stops, and the next test starts.

4-2-6 Maintenance List

A number of reports can be printed from the fax machine within the test mode. The protocol list all contain detailed information which may be required when contacting technical support. To printout the protocol list : 1. Get into the Tech mode by pressing Setup, #, 1, 9, 3, 4.
2. In Tech mode, press Report/Help. 3. Press or repeatedly until you find the Protocol List. When you find PROTOCOL LIST, press ENTER. SAMPLE OF A PROTOCOL DUMP LIST
Facsimile Information Field data described in hexdecmal code Sending/Receiving Name of signal (Facsimile Control Field) FIF data described in ASCII code

PROTOCOL DUMP LIST

OCT-20-1999 06:35
S/R S S S S S S R R S R R S R S S

FIF DATA

NSF 61005820003380140200001302090018010000 CSI 2020202020202020202020202O20202020202020 DIS NSF 61005020003380140200001302090018010000 CSI 202020202020202020202022O202020220202020 DIS TSI 2020202020202020202020202O20202020202020 DCS FTT TSI 2020202020202020202020202O20202020202020 DCS CFR MPS MCF DCN
< SAMPLE OF A PROTOCOL DUMP LIST >

4-3 Diagnostics

This section describes methods and procedures to isolate the cause of a malfunction in the machine. This machine displays diagnostic information on the LCD. In addition, it can perform a series of tests that allow the machine to observe individual machine functions.

POWER FAILURE

RECEIVE ERROR
A fax has not been received successfully.

RETRY REDIAL ?

The machine is waiting for a specified time interval to redial a previously busy station.

SEND ERROR

Your fax has not gone through successfully.
A problem with the facsmile communications has occurred. Try again.

TONER EMPTY

The toner cartridge has run out. The machine stops.
Replace with a new toner cartridge.

TONER LOW

The toner is almost empty.
Take out the toner cartridge and gently shake it. Using this way, you can temporarily re-establish the print quality. Wait until the printer is on-line.

WARMING UP

The printer is warming up and is off-line.

4-4 Print Quality

Roller

OPC Drum

Abnormal image period

75.4mm

Kind of abnormal image
White spot on black image Black spot
Charge Roller Supply Roller Develope Roller Transfer Roller Heat Roller Pressure Roller
37.7mm 26.8mm 31.6mm 47.1mm 50.1mm 50.2mm
Black spot Horizontal density band Horizontal density band Black side contamination/transfer fault Black spot, White spot Black side contamination
4-5 Note for replacing Main board
When you replace the main board to new one, the information on the toner state is cleared. Therefore, you should update the information to the new board by entering the exact value of total toner count and specifying the toner cartridge installed currently is shipped with the machine or new. If not, TONER LOW/EMPTY message may not appear when the toner is run out. 2. Replace Main board.
1. In Tech mode, print SYSTEM DATA LIST. The list includes the total toner count and CRU state information. TOTAL TONER COUNT: The total number of the dots used to print up to current time. CRU STATE: The page number which the toner cartridge can print. (The yield of a new toner cartridge is approximately 2,500 pages and that of the cartridge supplied with the machine is approximately 1.000 pages.)
3. In Tech mode, 3-1) Press Setup, and find MAINTENANCE by pressing repeatedly or , then press Start/Enter. 3-2) When TONER COUNT is displayed in LCD, press Start/Enter, and enter the value of the total toner count in the system data list. 3-3) When you are prompted to enter CRU STATE, press Start/Enter. 3-4) When you see [1.1000 2.2300] in LCD, select the value of the CRU state in the system data list.

Same problem occurs?

Transfer, charge and developing voltage are OK? YES
- Adjust voltage or replace HVPS NO - Repair or replace after checking the terminals contacts
Operating/ storage atmosphere is too high temperature /humidity? YES
Dirt or dust around the charge roller? YES
Solve the problem under the recommended condition (10-32 degree Centigrade)
Clean the charge roller or replace step-up device /terminal after check
Check Terminals or contacts and Guide-Deve Spring are misplaced -> Repair or replace transfer roller etc.

Work OK? YES

Internal blade or suppying part of the developer is defective -> Replace the toner cartridge
Clean transfer rollers holder and TR drive gearor replace TR holder assy
NO Is it regular interval of 75.4mm? NO Is it regular interval of 31.6mm? NO Is it regular interval of 47mm? (as transfer roller interval) NO YES Does the operation of TR work properly?
Is it regular interval of 50.4 mm?
Transfer voltage is set to standard? YES
Developing /suppying voltage normal? (-350V/ -550V) YES
Clean TR drive and OPC gear

NO YES

Clean heat roller or replace it
Does the same problem persist?
Check HVPS contacts and HVPSs self-output -> If failed, repair/ replace HVPS
Irregularity of NIP between rollers in developer -> Replace developer
- Repair or replace HVPS - Check and Repair or replace the terminal contacts
A specific part of the transfer roller has ruined or its resistance value is changed -> Replace transfer roller Transfer roller cannot force regularly due to the gears eccentricity of transfer roller -> Replace the defective component
Bias voltage is OK? (-350V)
Adjust the Bias voltage or replace HVPS
Operating/storage temperature is too low or not recommended paper used? YES
There may be a problem in toner layer control in toner cartridge -> Replace the developer
Use the machine with recommended paper and at condition

Black Spot

Is it regular interval of 37.7mm?
Is it regular YES interval of 75.4 mm?
Remove obstacles stuck on OPC drums surface
Perform the OPC cleaning using the control panel buttons.
When taking out the cartridge, toner leaks? YES
Bad image removes by scratching? YES
The problem randomly occured due to the toner fallen -> Clean the machine

5-4 Frame Lower Assembly

29-4 29-1 29-3 29-2

Transfer Roller

1 30-30-1 30-2

S-1 S-6

26 27-1

28-3 28-4 28-5 28-1 28-3 28

S-2 S-2

Frame Lower Assembly Parts List
No. 27 27-1 27-28-1 28-2 28-3 28-4 28-29-1 29-2 29-3 29-30-1 30-2 30-34 34-1 34-S6 S7 S11
Description ELA HOU-FRAME LOWER ELA HOU-FRAME LOWER ELA HOU-FRAME LOWER CBF HARNESS-OPE GND CBF HARNESS-FUSER SPRING-P/R (APOLLO) SPRING-GUIDE DEVE BEARING-PRESSURE R IPR-SAW_PLATE IPR-EARTH_TRANS IPR-GROUND_GUIDE IPR-GROUND_HVPS IPR-GROUND_FUSER IPR-GUIDE-TR IPR-PLATE-TERMINAL IPR-GROUND DRIVE PMO-BUSHING_TERMINAL PMO-ACTUATOR_EXIT PMO-GUIDE_INPUT PCT-FILM SAW PMO-HOLDER PR PMO-HOLDER EXIT PMO-FRAME LOWER PMO-COVER PTL PMO-CAP PLTE G/DEV R PMO-CAP PLTE G/DEV L PMO-STOPPER EXIT RMO-RUBBER_FOOT MEC-ROLLER FEED RPR-ROLLER FEED MEC-SHAFT FEED MEC-HOLDER FEED SPRING-ACT, FEED PMO-HOLDER_FEED PMO-BUSHING_FEED PMO-ACTUATOR_EMPTY PMO-ACTUATOR_FEED MEC-HOLDER TR L SPRING-TR(300) IPR-PLATE_TR PMO-HOLDER TR PMO-BUSHING_TR(L) MEC-HOLDER TR R SPRING-TR(300) PMO-HOLDER TR PMO-BUSHING_TR(R) MEC-ROLLER_PR 1210 PBA MAIN-SENSOR ELA HOU-MOTOR GND ELA HOU-OPEN SENSOR CBF HARNESS-COVER IPR-BRKT-SENSOR ELA HOU-PTL ASSY ELA HOU-FUSER 110V ELA HOU-FUSER 220V(531P) PMO-BUSHING SHAFT GEAR-FU_IN 47 PMO-HUB GEAR GEAR-FU_OUT 47 PMO-GEAR_83/35 IPR-BRACKET FUSER DRV FAN-DC SCREW-TAPTITE SCREW-TAPTITE SCREW-TAPTITE
SEC.Code JC96-02094B JC96-02094A JC96-02094C * JC39-00061A * * * * * * * * * * * * JC72-00130A * * JC72-00531A JC72-00532A JC72-00533A JC72-00534A JC72-41135A JC72-41173A * * JC75-00054A * * JC75-00055A * * * * JC72-00119A JC75-00106C * * JC72-00100C JC72-00102A JC75-00107C * JC72-00100C JC72-00101A JC75-00130A JC92-01197A JC96-01579A JC96-01584A JC39-00041A * JC96-02312A JC81-00439A JC81-00440A JG72-40849A JC66-00306A JC72-00676A * JC72-00154A * 3103-001085 6003-000152 6003-000196 6003-000119
SA O O O X O X X X X X X X X X X X X O X X O O O O O O X X O X X O X X X X O O X X O O O X O O O O O O O X O O O O O O X O X O O O O
Remark 110V 220V for China

110V 220V

5-5 Fuser Assembly

S 9 S 20

14-14-1 S 5 14

8 S 21

3 S 19 6
Fuser Assembly Parts List

No. 14 14-1 14-22 S S

Description ELA HOU-FUSER 110V ELA HOU-FUSER 220V(531P) THERMISTOR-NTC THERMOSTAT LAMP-HALOGEN LAMP-HALOGEN PMO-FUSER_UPPER PMO-BUSHING H/R L PMO-BUSHING H/R R PMO-COVER_THERMOSTAT NPR-ROLLER HEAT IPR-ELECTRODE_PLATE IPR-GROUND_FU IPR-PIN ROLLER EXIT IPR-ELECTRODE WIRE1 IPR-ELECTRODE WIRE,S MEA ETC-SHAFT EXIT PMO-SHAFT_EXIT(Z15) RMO-RUBBER_EXIT PMO-ROLLER_IDLE EXIT SPRING-EXIT PMO-GEAR_EXIT_DRV16 PMO-GEAR_EXIT_IDLE GEAR-FUSER 1210 LABEL(R)-CAU_HOT_FU SPRING-CLAW PMO-GUIDE CLAW SCREW-TAPTITE SCREW-TAPTITE
SEC.Code JC81-00439A JC81-00440A 1404-001188 4712-000001 4713-001120 4713-001121 * JC72-00530A JC72-00529A * JC71-00012B * * * * * * JC72-00150A * JC72-00567A JC61-00017A * * JC66-00037B * * * 6003-000119 6003-000196

MA IN S3Q46Q0X

EXIT SENSOR ARM7TDMI GEU P1284 ITU RXM O T O R I/O I/F

CENTRONICS CABLE

RESET (BACK-UP)

+5V -5V 24V +24VS

Audio Part ENGINE
O L EN OI D E FA N O PC _F U SE

USB CABLE

THERMISTOR

COVER OPEN SW

1. Block Diagram

PAPER SENSOR CACHE(4K)

DOC SENSOR board
PVC UART*2 MEMORY I/F USB Image Processor UART

FLASH MEMORY SDRAM

MHV O PC G N D SU PPL Y D EV

- LCD/LED Drive

- Key Scan

SCAN Board GPIO 74HC273

EXTERNAL

TX MOTOR DRIVER

33.6Kbps

AFE TRANSFORMER

600/ / 600 Tx : Rx EXTERNAL PHONE DETECTI ON PART

CIS INTERFACE PART

2. Connection Diagram

SCAN M OT OR

SCNMOT_ B SCNMOT_B SCNMOT_ A SCNMOT_A
+24V CIS_ L ED CIS_ CL CIS_ SI +5V GND CIS SIG
GND5 VC C VO LCD_RW LCD_RS

LCD_ E

LCD_D0 LCD_D1 LCD_D2 LCD_D3 LCD_D4 LCD_D5 LCD_D6 LCD_D7
GND VC C OPE_RXD OPE_RST OPE_TXD

CN1 OPE

5 CN 3

7 CN 4

SCAN BD

CIS_ CLK

CIS_ SI

CIS_ SIG

CIS_ L ED

DGND +5V

nOPE_ RESET

OPE_TXD

SMOT_NA SMOT_NB SMOT_B SMOT_A DGND +5V

OPE_RX

_STBIN
PPD(0) PPD(1) PPD(2) PPD(3) PPD(4) PPD(5) PPD(6) PPD(7) _ACK BUSY PE ROR R SE LECT _AUTOFD GND 5V2 GND GND GND _INIT _FAULT NC NC _SLCTIN

SPKOUT AGND

GND 24 PMOTOR _LREADY LSU_CLK _HSYNC +5V DGND _LD_ON VDO

3 POL YGO N 1

MO TOR

PCINTE RFACE

LD D IOD E 6

CLUTCH FAN

DEV_FUSE _NEW_DEVE

_EGMOT_A1 EGMOT_PHA

ENGINE
_EGMOT_B1 DGND +5V EGMOT_PHB +24VS +24VS GNDGND2 4

SE NSOR BD

_PEMPTY _FEED DGND

COVE R SWIT CH

TH ERMISTO R

THERM_A THERM_B

FUSE _ON R +5V _EXIT +5V DGND +5V DGND -5V DGND +24V GND24 +24V GND24 +24V GND24

CN14 CN21

CN 503
+24VS GNDTHV_PWM _THV_EA THV_READ MHV_PWM BIAS_PWM +5V DGND

CN8 CN13

MODEM_TXA1 _ nEXT PHONE MODEM_TXA2 AGND

DTE SERIAL INTERFACE

Receive Data Clock. The modem outputs a synchronous Receive Data Clock (/RDCLK) for USRT timing. The /RDCLK frequency is the data rate (0.01%) with a duty cycle of 50 1%. The /RDCLK low-to-high transitions coincide with the center of the received data bits. Received Line Signal Detector. For V.17, V.33, V.29, and V.27 ter; RLSD goes active at the end of the training sequence. If energy is above the turn-on threshold and training is not detected, the /RLSD off-to-on response time is 816 baud times for V.17/V.33, V.29, and V.27 ter long train; 492 baud times for V.17/V.33; and 486 baud times for V.27 ter short train. The /RLSD on-to-off time is ms for V.17/V.33, ms for V.29 or 11.ms for V.27 ter. The /RLSD on-to-off time ensures that all valid data bits have appeared on RXD. The /RLSD programmable threshold levels default to 43dBm for off-to-on and to 48dBm for onto-off. A minimum hysteresis of 2 dBm exists between the actual off-to-on and on-to-off transition levels. The threshold level and hysteresis are measured with an unmodulated 2100 Hz tone applied to the Receiver Analog (RXA) input. Note: Performance may be degraded when the received signal level is less than 43dBm. Data Clock. The modem outputs a synchronous Data Clock (DCLK) for USRT timing. The DCLK frequency is the data rate (0.01%) with a duty cycle of 50 1%. The DCLK low-to-high transitions coincide with the center of the data bits. Transmit Data (TXD) must be stable during the one microsecond period immediately preceding the rising edge of DCLK and following the rising edge of DCLK. Transmit Data. The modem obtains serial data to be transmitted from the local DTE on the Transmit Data (TXD) input in serial data mode (TPDM bit = 0), or from the interface memory Transmit Data Register (TBUFFER) in parallel data mode (TPDM bit = 1).

/CTS XTCLK

Signal Name/Description
Clear To Send. /CTS active indicates to the local DTE that the modem will transmit any data present on TXD. /CTS response times from an active condition of /RTS are shown in Tabl e 1-3. External Transmit Clock. In synchronous communication, an external transmit data clock can be connected to the modem XTCLK input. The clock supplied at XTCLK must exhibit the same characteristics as TDCLK. The XTCLK input is then reflected at the TDCLK output. Received Data. The modem presents received serial data to the local DTE on the Received Data (RXD) output and to the interface memory Receive Data Register (DBUFFER) in parallel data mode. Data Terminal Ready. In V.8 and V.34 configuration, activating /DTR initiates the handshake sequence. The DATA bit must be set to complete the handshake. In V.21 or V.23 configuration, activating /DTR causes the modem to enter the data state provided that the DATA bit is a 1. If in answer mode, the modem immediately sends answer tone. During the data mode, deactivating /DTR causes the transmitter and receiver to turn off and return to the idle state. The /DTR input and the /DTR control bit are logically ORed. Data Set Ready. DSR ON indicates that the modem is in the data transfer state. DSR OFF indicates that the DTE is to disregard all signals appearing on the interchange circuits except Ring Indicator (/RI). /DSR is OFF when the modem is in a test mode (local analog or remote digital loopback). The /DSR status bit reflects the state of the /DSR output. Request to Send. The active low /RTS input allows the modem to transmit data present at TXD in the serial data mode (TPDM bit = 0), or in DBUFFER in the parallel data mode (TPDM bit = 1), when /CTS becomes active. The /RTS hardware control input is logically ORed with the /RTSP bit by the modem to form the resultant control signal.

RS0-RS4

OVERHEAD SIGNALS
VDD1 VSS VGG MAVSS MAVDD VDD VSUB XCLK YCLK PWR DGND PWR AGND PWR PWR GND OA OA 3.3V Supply Voltage for DSP Digital Circuits. Digital ground. 5V Supply Voltage for DSP Digital Circuits. Analog ground. 5V Supply Voltage for IA Analog Circuits. 5V Supply Voltage for IA Digital Circuits. Connect to analog ground. XCLK Output. Output clock at 63.5045 MHz, which runs during normal operational mode and turned off during Sleep Mode. YCLK. Output clock at 28.224 MHz, which runs during normal operational mode and turned off during Sleep Mode.

XTALI/CLKIN

Crystal In/Clock In. Connect to an external 28.224 MHz crystal circuit or an external 28.224 MHz oscillator circuit. Label Crystal Oscillator

XTALO/NC

XTALI/CLKIN XTALI CLKIN Crystal Out/NC. Connect to the external crystal circuit return or leave open. Label Crystal Oscillator
PLL_VDD PLL_GND VCORE RESERVED

PWR DGND PWR -

XTALO/NC XTALO NC PLL Supply Voltage. PLL Supply Voltage return. 3.3V Supply Voltage. Connect to VDD1. Reserved pins are used for future development and should not be connected to any circuitry.

3-1-7 Scanner Part

CIS DRIVER, INPUT PROCESSOR
CIS contacl signal is consist of BLED, RLED, GLED, CIS_CLK CIS_SI. CIS driver power supply is +5v, LED driver power supply is +5v also. As CIS input signal, minc-Vref values O, MAXC+Vref Values is about 1.2V.

SPECIFICATION

Readable width Number of sensor elements Resolution Scanning speed Light source 216mm 2552 dots(21~2572 dots available) 75 ms/line 7.5 ms/line Color LEDs Red (640 mm) Green(525mm) Blue(470mm) 1 analogue 18.0 X 12.2 X 231.0 mm (attachment)
Data output Outward dimension(WXHXL)

PIN FUNCTION DESCRIPTION

No. Signature SIG GND VDD GND GND SI GND CLK LEDB LEDG LEDR VLED Name signal output Ground Supply voltage Ground Ground Start pulse Ground Clock LED Ground (blue) LED Ground (green) LED Ground (red) Supply voltage Description Video output signal 0V DC ; reference point +5V DC supply (ref. to GND) 0V DC ; reference point 0V DC ; reference point Start pulse 0V DC ; reference point CIS main clock LED POWER SUPPLY BLUE LED POWER SUPPLY GREEN LED POWER SUPPLY RED LED POWER SUPPLY
ELECTRICAL CHARACTERISTICS (TA=25C)
Item Power Supply Input Voltage Input Current LED Current SYMBOL VDD VLED VIH VIL IIH IIH ILEDr ILEDg ILEDb CLK tsu th tpd 1 tpd 2 ts MIN. 4.75 4.75 3.2 TYP. 5.0 5.0 MAX. 5.25 5.25 0.0.tw/2 tw/2 UNIT V V V V A. mA. mA. mA. mA. MHz % ns ns ns ns ns NOTE
SI & CLK SI & CLK REF. REF. REF. tw/to
Clock Frequency. Clock Pulse L Duty Setup Time Hold Time SIG Delay Time Sampling Reriod

CIS Driver Clock Timing

tsu tw

th tpd1 tpd2 ts 1st 2nd

CIS Block Diagram

VLED LEDR LEDG LEDB

VDD GND 21

ROD LENS ARRAY

SENSOR SHIFT REGISER & ANALOG SWITCH

S1 CLK

OP AMP SIG

2.5ms ST 1.2ms 1.2ms

ON 1.2ms ON

OFF 1.2ms

SIG O/P B O/P R O/P G O/P 7.5ms/line B O/P R O/P G O/P

3-1-8 HOST INTERFACE:

Parallel Port Interface
PARALLEL PORT INTERFACE PART KS32C61100 has the Parallel Port Interface Part that enables Parallel Interface with PC. This part is connected to PC through Centronics connector. It generates major control signals that are used to actuate parallel communication. It is comprised of/ERROR, PE, BUSY, /ACK, SLCT, /INIT, /SLCTIN, /AUTOFD and /STB. This part and the PC data transmission method support the method specified in IEEE P1283 Parallel Port Standard (http://www.fapo.com/ieee1284.html). In other words, it supports both compatibility mode (basic print data transmitting method), the nibble mode (4bit data; supports data uploading to PC) and ECP (enhanced capabilities port: 8bits data - high speed two-way data transmission with PC). Compatibility mode is generally referred to as the Centronics mode and this is the protocol used by most PC to transmit data to the printer. ECP mode is an improved protocol for the communication between PC and peripherals such as printer and scanner, and it provides high speed two-way data communication. ECP mode provides two cycles in the two-way data transmission; data cycle and command cycle. The command cycle has two formats; Run-Length Count and Channel Addressing. RLE (Run-Length Count) has high compression rate (64x) and it allows real-time data compression that it is useful for the printer and scanner that need to transmit large raster image that has a series of same data. Channel Addressing was designed to address multiple devices with single structure. For example, like this system, when the fax/printer/scanner have one structure, the parallel port can be used for other purposes while the printer image is being processed.This system uses RLE for high speed data transmission. PC control signals and data send/receive tasks such as PC data printing, high speed uploading of scanned data to PC, upload/download of the fax data to send or receive and monitoring the system control signal and overall system from PC are all processed through this part.
COMPATIBILITY HARDWARE HANDSHAKING TIMING

PPD( 7: 0)

ECP HARDWARE HANDSHAKING TIMING (FORWARD)

1 nSTROBE

nAUTOFD

DATA BYTE

COMMAND BYTE
1. The host places data on the data lines and indicates a data cycle by setting nAUTOFD 2. Host asserts nSTROBE low to indicate valid data 3. Peripheral acknowledges host by setting BUSY high 4. Host sets nSTROBE high. This is the edge that should be used to clock the data into the Peripheral 5. Peripheral sets BUSY low to indicate that it is ready for the next byte 6. The cycle repeats, but this time it is a command cycle because nAUTOFD is low

6 C207 3KV470pF

R207 2K

R216 SBR306

R218 MGR1/2W100KF

R217 SBR207

#17 #19

18V D301 1N4148 C18V

R3 1/2W560 ZD1 5.6V 6 U2 7407

R309 202K Q301 A708Y

R312 1W56

KAB-006 T6

TEV-EA

C307 3KW470pF

D304 4KV

R307 33K 18V

R313 1W56

C306 2KV68pF 5 7

D303 4KV

C308 3KV470pF

R315 SBR306
D-GND CR310 2.2K R308 33K R302 33K R303 100KF CD302 1N4148 CR304 389KF R306 26.1KF Q302 A708Y VR302 2K R311 100KF C305 333Z Q303 D526

TEV-READ

+ 10 U1 _ 9

4 R314 1.7K

R301 470K

R305 10KF C304 500V103Z

VR301 5K C301 222
3-4-2-11. Environment Recognition THV voltage recognizes changes in transfer roller environment and allows the voltage suitable for the environment in order to realize optimum image output. The analog input is converted to digital output by the comparator that recognizes the environmental changes of the transfer roller. It is to allow the right transfer voltage to perform appropriate environmental response considering the environment and the type of paper depending on this digital output by the programs that can be input to the engine controller ROM. For ML-5000 or ML-5200 series, this environment recognition setting is organized as follows: First, set the THV(+) standard voltage. Allow 200M load to transfer output, enable output and set the standard voltage 800V using VR201. Then set 78 (CPU's recognition index value) as the standard using VR302. This standard value with CPU makes sure that the current feedback is 4A when output voltage is 800V and load is 200M.If the load shows different resistance value when 800V is output, the current feedback will also be different and thus the index value will also be different. according to the index value read by CPU, the transfer voltage output will differ according to the preset transfer table. The changes in transfer output required by each load is controlled by PWM-DUTY.

SCHEMATIC DIAGRAMS

4.Schematic Diagrams
4-1 Main Circuit Diagram (1/6)

APOLLO2(MAIN)

4-2 Main Circuit Diagram (2/6)
4-3 Main Circuit Diagram (3/6)
4-4 Main Circuit Diagram (4/6)
4-5 Main Circuit Diagram (5/6)
4-6 Main Circuit Diagram (6/6)
4-7 LIU Circuit Diagram (1/2)

APOLLO2(LIU)

4-8 LIU Circuit Diagram (2/2)

4-9 OPE Circuit Diagram

U3 CD74HC14MX 11

CN1 GILS-5P-S2T2-EF

U3 CD74HC14MX

C14 100nF

C13 10uF

R11 200

R10 200