Displaying the operating state of a fan ······················································································································· 37
Displaying alarm information for a card ····················································································································· 37
Verifying and diagnosing transceiver modules ·········································································································· 38
Introduction to transceiver modules ····················································································································· 38
Verifying transceiver modules ······························································································································ 38
Diagnosing transceiver modules·························································································································· 40
Troubleshooting··························································································································································43
Configuration terminal problems·································································································································· 43
No terminal display ·············································································································································· 43
Garbled terminal display······································································································································ 43
Power supply system failure·········································································································································· 43
Fan failure······································································································································································· 44
MPU failure····································································································································································· 45
LPU failure······································································································································································· 46
Interface failure······························································································································································· 46
Technical support ··························································································································································· 47
Replacement procedures ···········································································································································48
Replacing a power supply system································································································································ 48
Replacing a DC power supply····························································································································· 48
Replacing an AC power supply··························································································································· 49
Cleaning a power supply air filter ······························································································································· 51
Replacing a card···························································································································································· 51
Replacing a subcard······················································································································································ 53
Replacing a fan tray ······················································································································································ 54
Replacing a fan tray for an A8805/A8812······································································································ 54
Replacing a fan tray for an A8808 ···················································································································· 55
Replacing a chassis air filter ········································································································································· 56
Replacing chassis air filters for an A8808 ········································································································· 56
Replacing an air filter for an A8805/A8812 ··································································································· 57
Replacing a CF card······················································································································································ 57
Replacing a transceiver module ··································································································································· 59
Hardware specifications············································································································································61
Environmental requirements ·········································································································································· 61
Technical specifications················································································································································· 61
Chassis ··································································································································································· 61
Cooling system ······················································································································································ 68
Card specifications ··············································································································································· 71
Power supply system ············································································································································· 77
LEDs·············································································································································································84
Power supply LEDs ························································································································································· 84
Fan LEDs·········································································································································································· 84
MPU LEDs········································································································································································ 85
CF card status LED················································································································································· 85
Network management port LEDs ························································································································· 85
LPU status LEDs······················································································································································· 86
MPU status LEDs ···················································································································································· 86
SPC card LEDs ································································································································································ 86
LINK/ACT LED······················································································································································· 87
Combo interface LED ············································································································································ 87
LINK and ACT LEDs··············································································································································· 87
SPE card LED ·································································································································································· 88
Subcard LEDs·································································································································································· 88
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