U630 USER MANUAL PAGE 27
4 DETERMINE MERLIN STATES
In This Section
•Determine the current state of your UMTS Merlin, by interpreting the cadence (flashing sequence) and colour of the Light Emitting Diode
The Light Emitting Diode (LED) is a device that lights up when power is applied to it. Interpreting the LED’s flashing sequence and color, will provide you with the current state of your UMTS Merlin. See Table 1 below.
Cadence | LED | Merlin State | Cause | Remedy | |
(flashing | |||||
Display | |||||
sequence) |
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| Merlin trying to read SIM | The modem is unable to | See | |
(1/4sec) 250ms ON | RED |
| read the SIM. | Section 5, | |
(1/4sec) 250ms OFF |
| An error has occurred in the | Problem 5 | ||
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| modem firmware. |
| |
ON (Not flashing) |
| Merlin Searching for wireless service | The Merlin is not receiving a | See | |
RED |
| signal from the wireless | Section 5, | ||
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| network | Problem 6 | |
(1/4sec) 250ms ON |
| Your Merlin is currently receiving a |
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| UMTS circuit switched (CS) signal |
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(1 3/4sec) 1750ms | BLUE |
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from the network and has registered |
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OFF |
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| on the circuit switched (CS) domain |
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(1/4sec) 250ms ON |
| Your Merlin is currently receiving a |
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(1/4sec) 250ms OFF | BLUE | UMTS packet switched (PS) signal |
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(1/4sec) 250ms ON | from the network and has registered |
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(1 3/4sec) 1750ms |
| on the packet switched (PS) domain |
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OFF |
| (also CS i.e PS or PS+CS ) |
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ON (Not flashing) | BLUE | Your Merlin is currently PDP context |
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activated on the UMTS system. |
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(1/4sec) 250ms ON |
| Your Merlin is currently receiving a |
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| GSM circuit switched (CS) signal from |
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(1 3/4sec) 1750ms | GREEN |
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the network and has registered on |
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OFF |
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| the GSM circuit switched (CS) domain |
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(1/4sec) 250ms ON |
| Your Merlin is currently receiving a |
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| GSM/GPRS packet switched (PS) |
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(1/4sec) 250ms OFF |
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| signal from the network and has |
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(1/4sec) 250ms ON | GREEN |
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registered on the GSM/GPRS packet |
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(1 3/4sec) 1750ms |
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| switched (PS) domain. (also CS i.e PS |
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OFF |
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| or CS) |
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ON (Not flashing) | GREEN | Your Merlin is currently PDP (Packet |
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Data Protocol) context activated on |
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| the GSM/GPRS system |
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Revision 1 | |
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