SAMSUNG SF-515
Service Manual

Troubleshooting

4-2-2 Tech Mode Options
In TECH mode, press SETUP, then press or until �TECH MODE� appears in the display. Press Start/Enter. The following technical options are available.

PAUSE TIME
� Pause time mean delay time (unit: second) inserted between dial number signal and the next number of signal in the automatic dial (One touch, Speed dial, Redial) and the manual dial. � Caution: The Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily.

Note : If necessary, print System Data List in TECH mode. The list shows all current system data settings including the TECH MODE options. To print the system data list, press Report/Help, then press or until �SYSTEM DATA� appears in the display, and press Start/Enter.

REDIAL INTERVAL Modem Speed
� You can set the maximum modem speed. � Communication is done with modem speed automatically set at lower speed when communicating with the modem with lower speed since communication is done on the standard of the side where modem speed is low for transmission/reception. It is better set 26.4KBPS as default setting. � If the remote machine is busy when the machine sends a fax using automatic dialing, the machine automatically redials the number. Select the time interval between automatic redial attempts. Enter the desired redial interval using the number keypad: 1 - 15 minutes.

REDIAL COUNT
� You can set times that redial automatically attempts when automatic transmission is done or when the remote machine is busy or when the machine send a fax. If there is no response after redialing by the times already set, redial is no longer attempted. No redial is attempted if the settings is 0. Enter the desired times from 1 through 5.

DIALING MODE
� Select the dialing mode according to the user's line status. � TONE: Electrical type of dial � PULSE: Mechanical type of dial

DP Make/Break SEND FAX LEVEL
� You can set the level of the transmission signal. Typically, the Tx level should be under -12 dBm. The level within the range of 1 to -15 dBm is acceptable. � Caution: The Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily. � Select the dial pulse make and break time: 40-60 or 33-67 � Caution: Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily.

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.

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. � Caution: The Send Fax Level is set at the best condition in the shipment from factory. Never change settings arbitrarily.

ERROR RATE FLASH TIME
� Set the flash time to 80, 280, or 600 milliseconds. � 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.

Samsung Electronics

4-3