Troubleshooting Procedures for Supercom Data Acquisition Systems are Now Available for Certain Off-Highway Trucks {7600, 7601, 7606, 7620}
- Off-Highway Truck/Tractor
- 793F (S/N: SND1-UP; SSP1-UP; SXP1-UP; D3T1-UP; RBT1-UP)
- 794 AC (S/N: MN51-UP; MT51-UP)
- 795F AC (S/N: ERM1-UP)
- 795FAC XQ (S/N: SNT1-UP)
- 797F (S/N: LAJ1-UP; WSP1-UP)
- 794 AC (S/N: MN51-UP; MT51-UP)
Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.
This Special Instruction describes the procedure for troubleshooting Supercom Data Acquisition Systems.
Safety Section
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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility. |
Best Practices
Before troubleshooting issues, make sure that these best practices have been followed.
- For longevity of the kit and components within the kit, avoid long-term exposure at or below
−20° C (−4° F) and above60° C (140° F) . - Do not swap kits between machines or engines without notifying Caterpillar.
- Do not swap hardware between kits.
Troubleshooting Procedures
The tables below should be used to troubleshoot the Supercom Data Acquisition Systems.
Power Troubleshooting
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| Illustration 1 | g06312427 |
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(A) Power supply for booster
(B) Modem (C) Ethernet cable (D) SuperComm2 (E) Booster | |
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| Illustration 2 | g06312437 |
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Illustration 2 shows the nine-pin service connector which supplies power to the kit. | |
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| Illustration 3 | g06312443 |
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Illustration 3 shows the front of the SuperComm 2. | |
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| Illustration 4 | g06312460 |
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Illustration 4 shows the booster and the booster connection lights. | |
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| Troubleshooting Test Step | Value | Result |
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1.) Check Internal Devices for Power A. Inspect the modem, booster (if installed), and the SuperComm 2 unit display to ensure that the components have active lights. Note: All components require a minimum of 12 volts. |
12V to 24V |
Result: All devices have active lights and power.(1) Proceed to Modem Troubleshooting section. Result: All or some devices indicate no power being supplied. Repair: Power is typically supplied to the kit via the 9-pin communication port. Depending on kit installation location, power could be hard-wired to other locations on the machine or engine. Check for power being supplied to the bulkhead connector on the side of the kit. Typically an 8 or 12-pin connection. Power should be equivalent to battery voltage for the application.(2) If specific components indicate lack of power, trace power wires from bulkhead connector through splices to each component and check power at the individual component. If individual components have power supplied, but are not showing active lights indicating functionality, contact Caterpillar for replacement of component. |
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| (1) | Refer to Illustration 1 |
| (2) | Refer to Illustrations 2, 3, 4. |
Modem Troubleshooting
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| Illustration 5 | g06312447 |
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Illustration 6 shows the Sierra Wireless GX400/450 modem connection lights. (L) Network (M) Signal (N) Activity (P) Power (Q) Reset | |
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| Illustration 6 | g06312462 |
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Illustration 7 shows the Sierra Wireless Pinpoint modem. | |
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| Troubleshooting Test Steps | Value | Result |
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1. Check the Power LED Status Solid Green - Power is ok and GPS is not locked on Flashing Green/Yellow - Power is ok and GPS is locked in |
Power Status |
Result: LED status is solid green. Proceed to Test Step 2. Result: LED status light is flashing green/yellow. Proceed to Booster Troubleshooting section. |
2. Check the Activity LED Status Flashing Green - Data is being transmitted No Light - Not currently transmitting data |
Activity Status |
Result: LED status is flashing green. Proceed to Test Step 3. Result: LED status light is off. Proceed to Booster Troubleshooting section. |
3. Check the Signal LED Status Solid Green - Strong signal (acceptable) Solid Yellow - Weaker signal (Marginal acceptability) Solid Red - Weak signal (Not acceptable) Flashing Red - No signal |
Signal Status |
Result: LED status is solid green. Proceed to Test Step 4. Result: LED status light is solid yellow/red or flashing red. Proceed to Booster Troubleshooting section. |
4. Check the Network LED Status Solid Green - Cellular connectivity is on Flashing Green - Cellular connectivity is on and roaming Yellow - Found service and attempting to connect, normal for 30 seconds after power-up Red - No cellular connection is made |
Network Status |
Result: The LED status light is solid green or flashing green. Proceed to Test Step 5. Result: The LED status light is yellow or red for over 30 seconds after power-up. Repair: Contact Caterpillar to replace the kit. |
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| Illustration 7 | g06327361 |
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(B) Modem
(F) Cell (G) GPS | |
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| Troubleshooting Test Step | Value | Result |
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5. Check the Wiring and Cables for the Modem A. Correct ports on the modem. Pull lightly on all coax cables and connectors to make sure that they are making connection and not broken. |
Wires and Cables |
Result: The wiring and cables are ok. Proceed to Proceed to the Booster Troubleshooting section. Result: The wiring and/or cables are damaged. Repair: Make any repairs necessary. |
Booster Troubleshooting
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| Illustration 8 | g06312427 |
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(A) Power supply for booster
(B) Modem (C) Ethernet cable (D) SuperComm2 (E) Booster | |
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| Illustration 9 | g06312460 |
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Illustration 4 shows the booster and the booster connection lights. | |
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| Troubleshooting Test Steps | Value | Result |
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1. Check the Power Supply from the Booster A. Check the power supply to the kit and booster. |
Modem Signal |
Result: The booster will not power up. Repair:1. Bypass the booster by plugging the antenna straight into the modem. 2. Monitor the LED on the modem using the statuses listed in the Modem Troubleshooting section. Result: If the modem signal is still weak, proceed to the Antenna Troubleshooting section. Result: The Signal LED Status is green, but the Network LED Status is yellow. Repair: Verify that there is good cell reception in the area by checking cellular reception with a standard cell phone. |
Antenna Troubleshooting
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| Illustration 10 | g06327384 |
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Example of the Supercom Data Acquisition Systems antenna. | |
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| Troubleshooting Test Steps | Value | Result |
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1. Check the Antenna Functionality |
Modem Signal |
Result: There is a weak modem signal. Repair: Inspect all of the antenna connections from the modem throughout the case and to the antenna. If any loose connections are found, tighten the connections and check the modem signal. Result: A weak modem signal is still present. Repair: Replace the antenna with a known good component. If the problem is not resolved, proceed to the SC2 Troubleshooting section. |
SC2 Troubleshooting
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| Illustration 11 | g06327400 |
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Example of host Ethernet. | |
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| Troubleshooting Test Steps | Value | Result |
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1. Check the Light/Status of the Host Ethernet Next to the SC2 Display Screen |
Ethernet Status |
Result: No light is active on the display screen. Repair: Check to see if the Ethernet cable is securely plugged in on both ends. The cable should be plugged into the host Ethernet port on the SC2 not the machine Ethernet port. The opposite end of the cable should be plugged into the modem. If cable is securely plugged on both ends, the cable may have failed. Replace the failed cable with a new Ethernet cable. Result: The Supercomm is still not functioning. Repair: Contact Caterpillar for a replacement kit. |
Caterpillar Information System:
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