Panasonic TU-CT20A Guide

Power Related Problem

Are

there any indication

s

of the LED

• Make sure the power adapter is

The above checks are all ok and

Unit is still

Unit is

not in

Unit purchased

Unit purchased

via

Return unit

AC Power Adaptor

Remote Control

Remote Control

Does the LED change

1.

Replace Batteries

The above process did not correct

the

Unit is still

Unit purchased

Unit pu

rchased via

Return unit

Click Here for:

Service Centre

Check Installation

No or Intermittent

No Colour

The above process

problem

Click Here for:

Service Centre

Click Here for:

Click Here for:

Reception Requirements

Volts

Back ratio and narrow acceptable angle

Standard Definition Set Top Box TU-CT20A Trouble Shooting Flow Chart

During non fault condition, a power indicator
LED located on the front left side of the unit
behind a dark Perspex lens will glow red
when in the “off” standby condition and green
when in the operating condition.

glowing?

Not Working

from Red to Green
or flash when the
Standby On/Off key
is pressed?

No

Yes

No

plugged into the mains power outlet
on the wall and the power is turned
on.

• Test unit on another mains power
outlet.

• Make sure the power lead of the
power adaptor is plugged in the
socket located on the rear of the unit
– see page 4 of operating instructions.

2. N ew batteries did not rectify

the problem.

• Remove Batteries

• Briefly short both sets of battery

terminals by linking them
together with a metal object
(paper clip, screw driver etc.)

3. Reinstall Batteries

problem still remains.

Power Adapter is possibly faulty

under warranty

warranty

from a retailer.

rewards points

program.

from a retailer.

back to retailer

for exchange.

Approved

back to retailer

Note: When selecting an Approved Service Centre

use Televisions - Audio & Visual option

Select

Spare Parts

Distributor

Approved

Service Centre

ADP-446SR

RC1153313/00

Approved

Service

Centre can
also supply
Accessories

Other Accessories

Other

• Connections

• Reception /

Antenna System

• Menu Settings

• Video output

settings

• RF output settings

• Test on ano ther TV

Yes

Have the unit tested at a retailer

Or otherwise continue

under warranty

for exchange.

• Test unit at a
different location

problem

rewards points

program.

Approved

Signal Strength

• Typical preferred threshold for quality analogue TV is 60dBmicro-Volts
(Minimum = 50dB micro-Volts, Maximum = 80 dB micro-Volts)

• Typical preferred threshold to decode digital TV is 54dB micro-
(Minimum = 40dB micro-Volts, Maximum = 70 dB micro-Volts)

Signal Quality

Minimum Signal-to-Noise Ratio requirements for digital TV is > 26dB

Suggestions to Increase Signal Levels and Improve Signal Quality:

• Use an extra gain aerial

• Use impedance matched Anti-interference aerial, mounted in a high

position out of doors.

• Use an aerial with a high Front /

• Use quad shielded cable, without links or breaks between aerial and Set

Top Box.

• Avoid routing cable near other electrical devices.

• Avoid using amplifiers where possible.

• Use a low noise amplifier with moderate gain and only use where

necessary.

• Direct antenna to receive a digital signal from alternate transmissions

Colour / Signal

• If using S-Video, check
video output setting in
menu is set to S-Video.

• If using RF output check
fine tuning on TV.

• Test on another TV .

Intermittent Colour

• If using RF output check
fine tuning on TV.

• Test on another TV.

No Signal (Loss of Signal)

• Check Antenna System /
Reception.

• Check RF Connections

• Test unit at a different

location – Friends Place

Intermittent Signal

(Loss of Signal)

• Check Antenna System /
Reception.

• Check RF Connections

• Test unit at a different

location – Friends Place

did not correct the