PN 9001024
Rev. B Jan. 2000
Page 8-4
SATO CL608 & CL612 SERVICE MANUAL
SECTION 8 – Troubleshooting
8-4 Troubleshooting the RS232C (Serial) Interface
1. Is the RS232C Serial cable connected securely to your serial port on the PC (DB-25S
Male and to the RS232C connector on the printer?
Warning: Never connect or disconnect interface cables (or use a switch box) with power
applied to either the printer or the host. This may cause damage to the interface circuitry
and is not covered by warranty.
2. Is the cable defective? At the very least, you should be using a "Null Modem Cable"
which crosses pins in a specific manner. This should enable your printer to print. We
recommend that you use a cable built to specifications described in Section 3, Interface
Specifications.
3. Check for obvious errors in the data stream. Remember that all print jobs for serial data
must be framed by an STX and ETX.
4. If after sending your job to the printer, it only "beeps" and the display indicates a "framing
error" message, you may have a configuration problem. There may be some
inconsistencies with the Baud Rate, Parity, Data Bits, or Stop Bits in relation to your host
computer. If you are unsure as to what the printer's current RS232 settings are, you may
choose the SATO defaults (all DIP switches in the OFF position) to achieve 9600 baud,
no parity, 8 databits, and 1 stop bit.
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