QSC CM16a Manuel télécharger pdf (Page 17)

6) The Hyper Terminal main window will appear next, but blank. Type the letter “h” (for help) and then the “Enter” key. This will prompt the CM16a to post its menu

text. The “h” key is the Help prompt for the CM16a.

7) The next screen will look similar to the Hyper

Terminal window, right. After typing “h” and

“Enter”, a text menu will appear. The menu

should appear very similar to the example

above. This is sent by the CM16a and will detail

your options and instructions for changing the

address information. Any differences in menu

text from the above example might occur after

any firmware updates of the CM16a.

From this “main-menu” you will need to make

your menu choices and follow the instructions

in the following sub-menus or screens.

Although many of the instructions and tests

may not pertain to a specific set-up or trouble-

shooting situation, you may be asked to run cer-

tain tests by a QSC technical representative.

The results of these tests will help to trouble-

shoot any problems.

The most common user item that might require settings to be changed would be the IP address information. This would be useful if the IP address was inadvert-

ently changed to an unrecognized address and subsequently you were unable to “talk” to the CM16a over the network. This situation would require the “Display

Network Settings” and “Enter Network Set-up” items to be accessed for re-assigning a “good” IP address.

IP ADDRESS ASSIGNMENT-

ONLY REQUIRED FOR ATTACHING TO EXISTING NETWORKS!

DO NOT CHANGE THE COMMUNICATIONS SETTINGS OF THE CM16a UNLESS CERTAIN OF YOUR ACTIONS. THE FACTORY-PRO-

GRAMMED IP ADDRESS IS PRINTED ON A LABEL AFFIXED TO THE FRONT PANEL OF THE CM16A WHEN IT IS SHIPPED. RECORD THIS IP

ADDRESS SHOULD YOU NEED TO RETURN TO THE INITIAL SETTINGS.

TELNET ACCESS

The RS-232 features can be accessed via the network.

The Microsoft Telnet application is a Windows program. Consult Windows documentation for Telnet information.

This is the basic procedure for opening a Telnet session:

1- To open the Telnet session- Click START, select RUN, type Telnet followed by a space, then the IP address of the CM16a you want to communicate with

in the text box and click OK. Win2000 will not use a console window (with menu) but rather a DOS window.

2- If the address entered was correct and network communications with the CM16a are successful, the Telnet session should open.

3- Now you have the same options that are available in the Serial Port I/O (RS-232) interface section (see page 29).

FUSE REPLACEMENT

If the CM16a does not power-up when the POWER switch is in the “on” position (POWER indicator LED does not illuminate) check the

source of AC power and the connection of the power cord at the outlet and IEC receptacle ends. If the AC source is “on” and the

power cord is connected and in good condition, then the condition of the fuses should be checked.

The fuse holder is an integral part of the IEC connector. It contains two fuses.

•To replace a fuse, first detach the AC power cord from the CM16a.

•Then use a flat-blade screwdriver to pry the fuseholder out, as shown at left.

The fuses are held in the round openings in the end of the fuseholder as shown at left, below. Replace one or both fuses with

the same type: 20 × 5 mm, 2 amp, 250V.

A visual inspection of the fuse will usually indicate if the fuse has been “blown” or not. This method is not foolproof, however, as sometimes the fuse element is

severed close to the end-cap making it impossible to see the break. When in doubt, test the fuse with an ohmmeter or just replace the fuse. Below is an illustration

of a typical clear glass-cartridge fuse. The “GOOD” fuse has an intact element from end to end and the “BAD” (or blown) fuse has a break in the element.

If the CM16a continues to “blow” fuses, DO NOT INCREASE THE FUSE RATING as severe damage to the CM16a could result. Contact QSC for service if fuses

repeatedly blow.

If fuse replacement does not enable the CM16a to power up, double-check the AC power source and the cord assembly

before returning the unit for possible repair.

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QSC CM16a Manuel Page 17

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