Hitachi d36wf840n 用户手册

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页码 74
problem identification
69
INFORMA
TION
Digital TV R
eception  
T
rouble Shooting Guide
remedy
possible cause
No picture or picture is jerky
or blocking.
Aerial incorrect type.
Replace aerial on
advice from dealer.
Not enough signal to TV.
Connect aerial to digital
input on TV first.
Check digital services
availability - Postcode test
(see dealer)
Intermittent interference on
digital. This may appear as
certain parts of the screen
‘freezing’ (blocking).
Poor cabling between aerial
and TV point.
Replace cable with
double shielded type.
(CT100/CT125 satellite
cable).
Poor connection in TV point.
Replace wall socket
with shielded type.
Poor connection between
TV point and TV.
Replace flylead with
double shielded type.
Not enough signal to TV.
Connect aerial to digital
input on TV first.
Consult dealer
concerning digital
compatible booster
amplifier.
Interference from nearby
electrical sources.
Tilt aerial up slightly. 
VCR not recording analogue
programmes.
TV is switched off.
Place TV in Standby.
Cannot receive new services,
or can no longer receive some
old ones.
Need to repeat tuning
process.
Use ‘Add New Services’
from the ‘Digital Setup’
menu. (Manual Tune -
Digital section).