Saab Automobile Accessories G3 ユーザーズマニュアル

Contact fault between Work Station and I/O Box or between I/O Box and
Level Unit.

• Check cable and connectors.

Serial port Com 1 or Serial Interface Board in Work Station faulty.

• Check Service window “Communication I/O Box” on Work Station.

See chapter 3.30.

The RS 485 Interface Board in location Com 4 in I/O Box faulty.

• Check that LEDs in I/O Box are flashing, see chapter 4.

Interface Board (LCI) in Level Unit faulty.

• See chapter 5.7.

Power failure to LI.

• Check status of LIs in Service window Level Unit: LI Status. See

chapter 3.16

• Check fuses in the Power Block (LP), see chapters 5.11 and 10.

Contact fault on cable between Calculation Unit and Transmitter Interface
(LI).

• Check status of LIs in Service window Level Unit: LI Status. See

chapter 3.16.

• Check cables and connectors inside the Level Unit.
• Check if LCM is functioning, see chapter 9.1.7.
• Check setting of switch for addressing of the LI, see chapter 5.10.5.

Power failure to LI.

• See chapter 9.1.3 above.

LI faulty.

• Replace LI. If the system is equipped with more than one LI, try

exchanging the LIs. See chapter 5.10.8 “Replacing a Transmitter
Interface”. Check result.

Mains power supply to I/O Box failing.

• Check that I/O Box has power and is running. See chapter 4.

Communication cables faulty.

• Open the cover and watch the LEDs on the main board at the bottom

of the box. See chapter 4.1.

• Check communication cables.

Serial Interface Board in Work Station faulty.

• Restart the Work Station (if more than one Work Station – restart the

Master Work Station) by pressing the Reset-button. See chapter 3.1.

Ground Failure on one or more LIs.

• Read chapter 9.14 for information on how to find the cause of the

ground failure.