Samsung SF 4700 Troubleshootin

7-1

7. Troubleshooting

7-1 SCANNER

PROBLEM ITEMS TO BE CHECKED HOW TO SOLVE

• Check shading profile.

• Check white Ref. value and black Ref. value.

• Check CIS signal input level.

• Check shading profile.

• Check if CIS LED is on/off.

• Check white ref.value and black Ref.value.

• Check CIS signal input level.

• Check shading profile.

• Check printing quality.

• Remake shading profile in the tech mode.

• Replace U27 if it is defective. (white Ref. =1.3V. black Ref=0V)

• Check if it is 1.3V when operating and 0V when idle. If defective, replace CIS.

• Remake shading profile in the tech mode.

• Check if CIS harness is pluged.

• If defective, replace U27. (white Ref.=1.3V. black Ref=0V)

• Check if it is 1.3V when operating and 0V when idle. If defective, replace CIS.

• Remake shading profile.

• Refer to ‘printing quality.

7-1-1 COPY

PROBLEM ITEMS TO BE CHECKED HOW TO SOLVE

Scanning error

Defective image quality

White Copy

Black Copy

Defective image quality

• Check if Printer cable is installed.

• Check if Printer cable is appropriate.

• Check how TWAIN driver is installed.

• Check parallel port I/P part

Check the early state of J2 print signals : #1,10-14,31,32,36.

Check U4 input/output signals

Check clock signals of U16-43~51,

U16-43~51 U16-53~61

Refer to ‘1,COPY’

• Check if Printer cable is correctly installed.

• Check if Printer cable is proper for

IEEE1284.

• Reboot the system after TWAIN driver is installed again.

• Replace the main PBA.

Refer to ‘1.COPY’.

7-1-2 PC-SCAN

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7-2

• Refer to User ’s Guide

Troubleshooting

7-1-4 Setting-up Systemm in User Mode

7-1-3 Service Mode

7-1-3-1 HOW TO ENTER SERVICE MODE

In service mode (tech) mode, the technician can check the machine and perform various test to isolate the cause of a malfunction.

To enter the service mode, press MENU, #, 1, 9, 3, 4 in sequence, and the LCD briefly displays ‘T’, the machine has entered service (tech) mode. While in service mode, the machine still performs all nor

mal operations. To return to normal user mode, press MENU, #, 1, 9, 3, 4 in sequence again, or turn the power off, then on by unplugging and plugging the power cord.

Options changed while in service mode do not remain changed unless you clear the machine’s memeory.

SETUP Item Default Status

DATE JAN/01/98 MONTH-DAY- YEAR JAN/01/98 TIME 12:00:00P HOUR-MINUTE- AM/PM 12:00 PM

CARTRIDGE CHANGE

MAINTENANCE CARTRIDGE CLEAN

CARTRIDGE ALIGN SCANNER INIT

FAX CONFIRM TRANSMIT LOG

PRINT REPORT RECEIVE LOG

SPEED DIAL LIST SELF TEST

PAPER SIZE LETTER / A4/LEGAL LETTER

FAX PRINT

LETTER QUALITY/ LETTER QUALITY DRAFT QUALITY

RINGER VOLUME OFF / LOW/ MEDIUM/ HIGH MEDIUM

SILENT OPERATION NO / YES NO FAX RECEIVE MODE FAX/TEL/ ANS/FAX/ DRPD FAX SETUP DRPD LEARN FAX MEMORY XMIT ON / OFF ON

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Troubleshooting

7-1-5 Setting-up Systemm in Service Mode

SETUP Item Default Status

CIS TEST AGING TEST SCANNER AGING/

PRINTER AGING FAX CONFIRM

TRANSMIT LOG RECEIVE LOG SPEED DIAL LIST

PRINT REPORT SELF TEST

PROTOCOL DUMP ASF TEST SYSTEM DATA

NVRAM DUMP MAINTENANCE CIS PATTERN PROGRAM DOWNLOAD MESSAGE CONFIRM ON/ OFF/ ERR ON-ERROR AUTO JOURNAL ON/ OFF ON REMOTE RCV CODE [0-9] 9 DIAL MODE TONE/ PULSE TONE ECM MODE ON/ OFF ON AUTO REDUCTION OFF / ON - WITH VERTICAL / ON ON DISCARD SIZE [00-30] 11 RETRY INTERVAL [1-7] 3 RETRY COUNT [0-2] 2 ANSWER ON RINGS [1-7] 1 RPINT RTI. ON/OFF ON

MODEM TEST?

FSK/ 2400/ 4800/ 7200/ 9600/ 12000/

1400 bps/ 1100/ 1650/ 1850/ 2100 Hz DTMF TEST? ROM TEST? MODEM SPEED ITEM[1-6] 14.4/ 12.96/ 72/ 48/ 24 14.4 SET TX LEVEL [01-15] 12 SET RX LEVEL [40-50] 43 PAUSE TIME [1-9] 3

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Troubleshooting

CIS TEST It is used to adjust the light of CIS. It is already set at

CIS TEST to get optimum quality.

1. Load All white Document in scanner Unit.

2. Press SETUP.

3. LCD will display ‘CIS TEST PRESS START’.

4. Press START then LCD will display ‘SHADING...’.

5. After scanning, shading waveform is printed out.

6. After shading waveform was printed out, press STOP.

7. Turn OFF system and Turn ON. <note: COLOR CIS AUTO PEAK TESK>

AGING TEST SCANNER AGING - Scanner part aging

PRINTER AGING - Printer part aging

PRINT REPORT

1. Press SETUP.

2. Press the MENU button until ‘PRINT REPORT’ displays in the top line of the LCD panel.

3. Press the OPTIONS button to select the log you want to print.

4. Press the START or SETUP button to print the report.

PROGRAM DOWNLOAD

1. Press SETUP.

2. Press MENU 3 times until LCD will display ‘PROGRAM DOWNLOAD PRESS START’.

3. Press START.

4. Download ROM file from a PC that can be connected with USB cable.

MESSAGE CONFIRM A message confirmation report shows whether the

transmission was successful or not, how many pages were sent, etc.

1. Press SETUP.

2. Press MENU 4 times until LCD will display ‘MESSAGE CONFIRM. 1. ON 2. OFF 3. ERR’.

3. Press 1 to print a confirmation report automatically each time you send a fax(ON). Press 2 to turn this feature off(OFF). Press 3 to print only when an error occurs and the transmission was not successful(ERR).

AUTO JOURNAL A journal shows specific information concerning trans-

mission or reception activities, the time and dates of up to 40 of the most recent transmissions or receptions.

1. Press SETUP.

2. Press MENU button until ‘AUTO JOURNAL’ displays in the top line of the LCD panel.

3. Press 1 to print journal automatically after every 40 transmissions or receptions (ON). Press 2 to print journal manually (OFF).

REMOTE RCV CODE The remote receive code allows you to initiate fax

receive from an extension phone plugged into the EXT jack. If you pick up the extension phone and hear fax tones, enter the remote receive code and the fax will start receiving. The password is preset to 9 at factory.

1. Press SETUP.

2. Press the MENU button until ‘REMOTE RCV CODE’ displays in the top line of the LCD panel.

3. Enter the desired code 0 to 9 on the number keypad.

DIAL

MODE

Select the type of dial system your fax machine is connected to.

1. Press SETUP.

2. Press the MENU button until ‘DIAL MODE’ displays in the top line of the LCD panel.

WARNNING!

Shading profile MUST be made after Downloading a new Firmware. If not, system will not work properly.

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