Quatech DSCLP-300, SSCLP-300, SSCLP-200, DSCLP-200 Troubleshooting, Computer will not boot up

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10 Troubleshooting

Listed here are some common problems and frequent causes of those problems. If the information here does not provide a solution, contact Quatech technical support.

Any unauthorized repairs or modifications will void the DSCLP-200/300's warranty.

Computer will not boot up.

1.Is the DSCLP-200/300 properly inserted? Remove the card and try again. Perhaps try a different expansion slot.

2.Ensure that an ISA-bus card is not using the same IRQ that the PCI BIOS tries to assign to the DSCLP-200/300. Most computers have BIOS setup options to reserve IRQs for either ISA or PCI use. Try reserving the IRQ for the ISA card. The BIOS will automatically choose a different IRQ for the DSCLP-200/300. An address conflict is unlikely because most PCI-based computers will assign I/O addresses in such a way that they cannot conflict with ISA-bus devices.

3.The DSCLP-200/300 may be defective. Contact technical support for instructions.

Cannot communicate with other equipment.

1.Are the cable connections correct? Are the cables securely attached?

2.Is the software configured with the correct base address and IRQ information for the DSCLP-200/300? (This is mainly a DOS issue.)

3.Is the device driver installed?

4.If you are trying to communicate with another DTE, a null-modem cable will be required.

5.If possible, use a loopback connector to test the port. Loop-back TxD+ and RxD+ (pins 2 and 4) Loop-back TxD- and RxD- (pins 7 and 8) Loop-back AuxOut+ and AuxIn+ (pins 1 and 5) Loop-back AuxOut- and AuxIn- (pins 6 and 9)

DSCLP/SSCLP-200/300 User's Manual

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Contents DSCLP/SSCLP-200/300 Warranty Information Iii Standards to which Conformity is Declared Manufacturers NameManufacturers Address Application of Council DirectiveBase Address and Interrupt Level IRQ Hardware ConfigurationHardware Installation Address Map and Special Registers RS-422 or RS-485 Signal Line TerminationHalf-Duplex/Full-Duplex/Auto-Toggle Selection Page General Information Jumpers J6-J9 Full-duplex/Half-duplex Operation Signal ConnectionsRight Card Edge Jumpers Jumpers J10-J23 define the options for this card1 CTS0SEL, CTS1SEL J10 Force High-Speed Uart Clock X2, X4, or X8 J3, 4 Enable Scratchpad Register SPAD, J2Clock Rate and Optional Registers Clock multiplier jumper options Jumper/connector locations Hardware InstallationChannel Address Range Bit Description Enabling the Special RegistersInterrupt Status Register Dlab Bit Spad Jumper Register selected forQuatech Modem Control Register Quatech Modem Control RegisterWrite Read Options RegisterBit Name Description Clock Rate Uart Clock Maximum Data Multiplier Frequency Clock Rate MultiplierWindows Millennium Windows ConfigurationsWindows Windows Page Windows Windows NT Viewing Resources with Device Manager Two-Port RS-422/RS485 Serial Adapter Page DSCLP-200/300 Two-Port RS-422/485 Serial Adapter Page Page Page Page DOS and other operating systems Other Operating SystemsOS/2 QTPCI.EXE QTPCI.EXE Expert Mode display Jumper/Channel correspondence External ConnectionsRclk RTS/CTS HandshakeAUXIN/AUXOUT Loopback TclkHalf-Duplex/Full-Duplex/Auto-Toggle Selection Half/full-duplex and Auto-Toggle selection RS-422/485 Line termination resistance values Termination ResistorsRS-422/485 Peripheral Connection DSCLP-200/300 connector definitionsINTA# PCI Resource MapWith 64-byte FIFOs optional SpecificationsCannot communicate with other equipment TroubleshootingComputer will not boot up DSCLP/SSCLP-200/300