Manhattan Computer Products ST 250 instruction manual Trouble Shooting Guide, Specifications

TROUBLE SHOOTING GUIDE

If you suspect there is a problem with your receiver, please check the following trouble shooting guide before calling a Manhattan authorised service agent.

WARNING! Do NOT attempt to repair the receiver yourself. Tampering with the receiver may result in fatal electric shock and will invalidate your warranty.

Symptoms --- Possible cause / solutions

Front display not lit ---Check that the mains lead is plugged into the power socket. Check that your TV is tuned for the correct channel or is switched to correct AV input.

No picture or sound or any menus ---No signal. Channel is scrambled. The antenna is not in correct position. Check LNB wire is not damaged or shorting. Check LNB may be faulty. Unplug receiver from power socket and retry.

Interference, on picture, using Modulator output --- Local terrestrial TV interference. Switch the output

channel to different one then re-tune your TV. Select the appropriate ‘TV Standard’ using TV Settings menu. Bad picture with blocking or frozen ---Signal weak or noisy. Check signal quality. Antenna not in correct position

Not responding to remote control ---Check the batteries in your remote control. Replace with new. You have lost or forgotten your password ---Apply master password or contact your Manhattan dealer.

SPECIFICATI
SPECIFICATIONS
TUNER
Input Connector	F-type IEC 169-24 Female
Frequency Range	950MHz to 2150MHz
Input Impedance	75 Ohm
Signal Level	-25 to - 65 dBm
LNB Power & Polarization	Vertical +14V, Horizontal +18V (600mA Max. with Overload Protection)
LNB Control	22KHz … 4 KHz, Tone burst A/B and DiSEqC 1.2
22 KHz Tone Amplitude	0.6Vpp (…0.2V)
Input Symbol Rate	1~45 Msps
FEC Decoder	Auto, 1/2, 2/3, 3/4, 5/6, 7/8
SYSTEM
Transmission Standard	DVB MPEG-2
Input Data Rate	Max 15Mb/s
Aspect Ratio	4:3, 16:9
Video Resolution	720 x 480 NTSC, 720 x 576 PAL
Audio Decoding	MPEG Layer 1 and 2
Audio Mode	Single channel / Dual Channel/Joint Stereo / Mono
Sampling Rate	32KHz, 44.1KHz, 48KHz, 96KHz,
COMMON INTERFACE
Slots	2 slots type 1 and type 2
PCMCIA	DVB Common Interface Standard
IRDETO EMBEDDED CI
Card Slot	1 Slot DVB Common Interface Standard
PVR READY	To fit 40 - 120 GB Hard Disk Drive
CONNECTORS
CVBS	1 PHONO RCA
Audio Output	2 x PHONO (L, R) / RCA
Digital Audio Output	1 PHONO RCA (S/P DIF)
+12V Output	1 PHONO RCA (+12Volts 100mA Max)
Data Interface	1 RS232 (Bit Rate: 115,200 baud Connector: 9-pin D-sub type)
RF connectors	75 Ohm IEC 169-2 Male/Female
RF MODULATOR
Frequency	60MHz to 72 MHz
Channel Range	CH3 to CH4
TV standard	NTSC M

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