Crestron qm-rmcrx Benutzerhandbuch

Crestron QM-RMCRX  

         QuickMedia™ Receiver/Processor

 

IR or serial port not 
connected properly. 

Verify connections and tighten serial 
cables. 

Used wrong IR/Serial port. 

Verify that proper IR or serial port is 
defined. 

A/V system 
device does 
not respond. 

Serial cable miswired. 

Verify that serial cable is wired correctly 
for RS-232. 
Verify RGB, video, S-video output cable 
connection to unit and video display.  

No video 
output 
displayed. 

Incorrect cable connection 

Verify QM input Cable connection is 
secure. 

Wrong SystemBuilder or 
SIMPL Windows

programs.  

Verify and upload correct programs. 

Wrong source or 
video displayed. 

SystemBuilder project not set 
up correctly. 

Verify proper video set up for each video 
input. 

Incorrect cable connections. 

Verify 15-pin output cable connection. 
Verify QM input cable connections. 

Video from RGB 
source is garbled 
or no output. 

Signal skew due to cable 
length or unequal pair length.

Verify maximum QM cable length and 
compensation for skew. 

Poor RGB or 
video image 
quality. 

Incorrect peak and/or boost 
setting. 

Adjust DMT peak or boost controls till 
image quality is improved. 

Hum on audio. 

Grounding problem. 

Refer to note and diagram on page 19 for 
ground wire connection instructions.  

QM input connector loose or 
not connected. 

Verify that QM input connector is securely 
plugged in. 

Room output (speaker) 
wire(s) loose or not 
connected. 

Verify that speaker wires connected to 
SPEAKER connectors are secure. 
 

Audio distorted 
or not present at 
room output. 

Improper hookup. 

Verify that you are not using the 
SPEAKER output and the AUDIO line 
outputs at the same time. 

Intermittent or no 
audio/mic output.

Incorrect peak setting. 

Adjust DMT peak control until audio is 
restored. 

The System Monitor allows you to reload firmware into the QM-RMCRX in the 
event that you cannot load the firmware in the normal mode. 

Perform the following procedure to correct the “System does not function” 
trouble situation (in reference to Corrective Action). 

If the system does not function, perform the following procedure: 

1.  Connect DB9 null-modem RS-232 cable between the PC and QM-

RMCRX COM port B. Refer to “Hardware Hookup” on page 17. 

2.  Open Viewport and select Setup | Communication Settings to open 

the “Port settings” window. 

3.  In the window, select RS-232 (Connection Type), 57600 (Baud Rate), 

N (Parity), 8 (Data Bits), 1 (Stop Bits), RTS/CTS On, XON/XOFF 
Off, and click OK.  

4.  Power down the QM-RMCRX. 

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