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Chapter 4 Troubleshooting and Diagnostics Installation and Operation Manual
4-10 Troubleshooting ASM-40CD Ver. 1.0
Table 4-3. ASM-40CD Alarm Messages
Alarm Message Indicates
SYNC LOSS Line is disconnected
NO MANAGEMENT Management channel is not available
FPGA FAILED ASM-40CD data processor has been incorrectly loaded
NVRAM FAILED Modem non-volatile RAM failed
NO MODEM PORT (IR) Modem does not detect the digital interface
ILLEGAL EXTERNAL CLOCK Detected clock rate is not supported by the modem
4.6 Troubleshooting
ASM-40CD is designed to facilitate identifying and correcting system failures that
preclude normal modem operation. This section lists some possible failures in
ASM-40CD function, and describes their symptoms and the required corrective
actions.
Using LEDs
Many malfunctions or system failures can be detected through changes in the
state of the ASM-40CD front panel LEDs (described in
Chapter 2
).
Table 4-4
lists
changes in the status of some LEDs that indicate malfunctions, and the
appropriate corrective actions.
Table 4-4. Troubleshooting Using LEDs
Symptom Malfunction Corrective Action
Power LED is Off Blown fuse, +5V or -5V Replace the blown fuse
SYNC LOSS LED is On
Modem is not locked
DCD LED is Off
Line connection between
modems
Check line and line
connection between
modems
TX LED is Off
Modems are locked
(no information transfer)
Modem to DTE connection Check connection between
modem and DTE
ERR LED is On See
Table 4-5
–
Using Alarm Messages
Some ASM-40CD malfunctions can be detected from a combination of alarm
messages and changes in the state of the front panel LEDs.
Table 4-5
details a
number of alarm messages associated with ERR LEDs that indicate different
sources for system failures and the required corrective actions.
- ASM-40CD 1
- Limited Warranty 4
- Product Disposal 4
- General Safety Instructions 5
- Safety Symbols 5
- Handling Energized Products 6
- Attention 8
- FCC-15 User Information 9
- Quick Start Guide 11
- Advanced Configuration 12
- Contents 13
- Chapter 1 15
- Introduction 15
- Features 16
- 1.2 Physical Description 17
- Table 1-1 18
- Table 1-1. Fuse Data 18
- Figure 1-4 18
- 1.3 Functional Description 19
- Management 21
- Configurable Parameters 21
- Power Supply 24
- Environment 24
- Chapter 2 25
- Installation and Operation 25
- Figure 2-1 26
- Interface Module Inspection 27
- LRSI-F-5 28
- LRSI-F-14 28
- Setting Internal Jumpers 29
- 2.6 Operating the ASM-40CD 30
- Table 2-5. ASM-40CD LEDs 31
- Figure 2-5. ASM-40CD LEDs 31
- Powering ASM-40CD Up 32
- Normal Operation 32
- Chapter 3 33
- Configuration 33
- Using Alarm Messages 34
- Chapter 4 34
- Navigating the Menu 35
- 3.5 Configuring the Modem 36
- Troubleshooting and 37
- Diagnostics 37
- Activating Loopback Tests 38
- Running Loopback Tests 38
- Local Analog Loopback (LLB) 38
- Local Digital Loopback (DIG) 40
- 4.4 Viewing Alarm Status 43
- Figure 4-6 44
- Table 4-2 44
- . Table 4-3 45
- Table 4-5 46
- Appendix A 51
- IR-ETH Ethernet Card 51
- A.2 Technical Specifications 52
- Configuring IR-ETH 53
- Installing the IR-ETH Card 53
- Figure A-3 54
- Figure A-4 54
- Installing the Hub 55
- LED Indicators 55
- Appendix B 57
- IR-ETH/QN (IR-ETH/Q) 57
- Interface Module 57
- B.3 Technical Specifications 58
- Configuring IR-ETH/QN 59
- Appendix C 63
- Command List 63
- C.2 Modem Setup 64
- Clock mode of both 65
- C.3 Modem Status 66
- Figure C-3 67
- Table C-3 67
- C.4 Modem Log File 68
- Customer Response Form 71
- Error Report 73
- Innovative Access Solutions 76
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