| Note: this mode is usually accompanied by alternate flashing of the CC Auto Head and Depth LEDs. CC Power LED is lit. See Troubleshooting Aids for more information. |
| Failure #1 |
SPS is not supplying 360VDC. |
| Cause #1 |
GFI has been tripped due to an insulation failure in the SPS, Umbilical or LBV. The SPS Amber LED flashes 1 long pulse and two short pulses. All Motherboard LEDs are continuously unlit. |
| Fault Isolation |
Unplug Umbilical from LBV and energize system as normal. Check for 360VDC between pins 1 and 3 at LBV-end of Umbilical. If 360 VDC is present, the fault is in the LBV (See “LBV Power Failure Section"). If it is absent, and the SPS Amber LED is still flashing the ‘1 long, 2 short’ error code, unplug Umbilical from SPS and energize system as normal. If SPS Amber LED is still flashing the above error code, the fault is in the SPS (See ‘SPS Power Failure Section’). If Amber LED is in the proper operating condition, the fault is in the Umbilical (See ‘Umbilical Failure Section’). |
| Cause #2 |
SPS 360VDC turn-on circuit is not operating. DC Voltage readings at the LBV end of the Umbilical (between pins 1 & 3) are more than 0, but less than 300VDC. LBV Motherboard Power LEDs are continuously unlit. |
| Fault Isolation |
SPS Board (inside SPS) is faulty (See "SPS Power Failure Section"). |
| Cause #3 |
SPS is configured for 240VAC operation, but is plugged into a 120VAC supply. Reconfigure as per Procedures Manual. |
| Cause #4 |
SPS is configured for 120VAC operation, but is plugged into a 240VAC supply. SPS Board power input section is damaged, and must be returned to factory for replacement or repair. |
| Failure #2 |
LBV Vehicle Power Supply is shorted. Motherboard Power LEDs are flashing. |
| Cause |
Various (See “LBV Power Failure Section"). |
| Failure #3 |
Communications error inside LBV. Motherboard Power LEDs are normal, but either one or both Communication LEDs are unlit, or lit but not flashing. |
