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

Service Manual

Third edition, June 1997

9.9.2

Indicated inert gas pressure always the same

IG pressure sensor’s opening to the tank may be clogged.

• Clean the sensor’s opening to the tank. See chapter 6.4.

IG pressure sensor faulty.

• Replace sensor, see chapter 6.4.

9.10

Tank Display Unit

9.10.1 Display on TDU not working.

No voltage supply

• Check fuses in TDU-Power Supply. See chapter 8.2.
• Check power cables and DC distribution to TDUs.

Communication failure

• Check communication cables
• Check I/O Box. See chapter 4 and 9.4.

9.11

Portable Readout System:

9.11.1 Indication of communication error (CERR) on PRU.

Low walkie-talkie battery voltage

• Charge battery. This may be necessary even if voice communication

works.

Bad radio conditions.

• Move PRU (walkie-talkie) to another position. This may be necessary

even if voice communication works.

• Check base radio antenna.

Low volume control on either radio.

• Increase volume control.

Incorrectly adjusted squelch control on either radio.

• Adjust squelch (if any) to low level without noise between

transmissions.

9.11.2 No voice communication between walkie-talkie and base radio (PRS).

No power supply.

• Check batteries in walkie-talkie and power supply to base radio.

Unit faulty.

• Replace units one by one: base radio, walkie-talkie, PRU, PRS

Interface Board in I/O Box.

Cable faulty.

• Check the cabling between base radio and I/O Box.

9.11.3 No display on PRU.

Low walkie-talkie battery voltage

• Walkie talkie battery needs to be recharged

PRU cable faulty.

• Replace cable.

PRU faulty.

• Replace.