Samsung SCX-6320F, Service Manual

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Summary of Product
Service Manual
4-21
Samsung Electronics
4.4.5 Modem Speed
The SCX-6320F can transmit code at a maximum speed of 33600 bits per second. The SCX-6320F will
compensate for fluctuating phone line quality by stepping-down in modem speeds (33600 to 28800 to 26400-to
21600 to 19200 to 14400 to 12000 to 9600 to 7200 to 4800 to 2400) to improve the probability that a fax
transmission will be completed on the first attempt. Normally, 33.6KBPS can transmit one page in 3 seconds
and 14.4KBPS at 7 seconds, but at 9.6KBPS the modem takes 10~12 seconds.
(ITU-T No.1 chart at standard resolution using memory transmission)
4.4.6 Error Correction Mode
ECM is a communications mode which compensates for poor line quality and ensures accurate, error-free
transmissions to any other ECM-equipped fax. However the transmission speed is slower than when using
standard mode.
4.4.7 Compression/Decompression
The SCX-6320F can compress the scanned image data to transmit fax data or decompress to print out received
fax data using MH/MR/MMR/JBIG/JPEG (transmission) (ITU-T T4/T6) compression/decompression algorithms.
4.4.8 256 Level Half-toning
This feature is used when transmitting photographs or documents with halftones. The enhanced image feature
gives documents the appearance of more grayscale levels using the Error-Diffusion method.
4.4.9 Telephone Answering Device (TAD) Interface
A TAD device is attached to the EXT line jack. The SCX-6320F supports ANS/FAX mode to receive fax message
during TAD device operation.
4.4.10 Memory Capacity
Memory capacity for Fax reception is 16 Mbytes which is used to receive fax data successfully when there is no
paper there is a paper jam or when using memory transmission / broadcasting / delay or secure receive functions.
The memory can be backed up for about minimum 72 hours when Power is off. (This can vary if additional memory
is fitted in the expansion socket.) Sometimes if the image data is bigger than the memory capacity, for example,
full image with Superfine Photo resolution, the image cannot be received. Even when Auto reduction is Off, the
received image for one page may be bigger than the memory capacity. The SCX6320 also retains, in memory, the
last page printed so that, in the event of a paper jam, the page can be reprinted if necessary. Each page is only
deleted when the set is certain that the page print is successful. For this reason there may be times when less
memory is available than is required to receive a complex page image.