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A.1 TROUBLESHOOTING
There may be various reasons for abnormal operation of the receiver. Check the receiver according to the
procedures shown below. If the receiver does not work properly after checking it, please contact your dealer
or the local Service Hotline. Do NOT try to open or disassemble the receiver. It may cause a dangerous
situation and warranty will be void.
Problem
LED indicator not lit
No signal found
No picture or sound on TV
or amplifier
Scrambled channel
message
No response to remote
control
Forgotten PIN code
Forgotten channel lock
code
Signals are interrupted
or blocking is visible on
screen
The receiver switches off
automatically.
Playback of video is
causing picture freeze/
macro blocks or similar
distortion, especially on
HD content.
A.2 TECHNICAL SPECIFICATIONS
Tuner
Tuner:
Input Impedance:
Minimum Input Level:
Receiving Channel Range:
Modulation:
Symbol rate:
Possible cause
Mains lead unplugged
Cable input is disconnected Orange
signal LED is Off
HDMI or SCART is not selected on your
TV or amplifier or the unit is set to
higher resolution as the TV supports.
TV/amplifier is not switched on
Channel is scrambled
Receiver off
Remote not aimed correctly
Front panel obstructed
Remote batteries exhausted
Cable signals are too weak or have
reflections/interference.
Auto Standby function enabled.
Read speed of your USB device could
be too low.
Rafael R850
75 Ohm
≤ 40 dBuv (64 QAM)
≤ 44 dBuv (256 QAM)
47 MHz ~ 862 MHz
16, 64, 128, 256 QAM
3.6 ~ 6.952 MS/s
What to do
Check mains plug
Check cable lead Check with dealer
Switch to correct TV/amplifier input
Select lower resolution on receiver
Switch TV/amplifier on.
Select alternative channel
Plug in and turn on plug
Aim remote at front panel
Check for obstructions
Replace remote batteries
Default PIN is 0000
Contact local Service Hotline or send
email to our Support via www.strong.tv
Press the INFO button on remote 2x to
call up signal bars and check your cable
connections and leads. Using (many)
splitters in the signal lead might cause
reflections/interference in the digital
signal and distort reception. When in
doubt, check with your dealer.
Disable auto standby. See chapter 7.4.3
for details.
Make sure to use a USB storage device
with sufficient speed and space. Pen
drives ('USB sticks') may not support
sufficient speed.
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