SC-ZT1EE, SU-ZT1EE, SB-ZT1EE - Panasonic Audio Other Service Manuals (repair manual). Page 14

14

Fig. 3

FL display

Symptom

Cause and Remedy

F61/OVERLOAD

Speaker short, amplifier failure, electrical over-
load etc.

Speaker short and failure in power amplifier, pre-amplifier
circuits.  Check for faulty parts and replace with new parts if
necessary.

Humidity protection activated

FANLOCK

Fan stopped

Failure fan and fan control circuits. Check for faulty parts
and replace with new parts if necessary.

F70

Communication error between sub micro- pro-
cessor and its peripheral LSI

Failure sub-micro processor and its peripherals LSI.  Check
for faulty parts and replace with new parts if necessary.

F76

When the power is turned on, the unit power
automatically turns off; the power cannot be
turned on.

Failure in the power circuit system of the unit.  This may
happen when the direct current electricity is supplied to
speaker terminals.  Check that the speaker wires are not
shorted (bare wire touching each other) or that the unit is in
a hot enviroment without proper ventillation.

Remote 2
Remote 1

Main unit code setting problem with remote
control.

Set the same remote control code for this system and 
remote control.

• If “REMOTE 2” is displayed, set remote control code to 

“2”.

• If “REMOTE 1” is displayed, set remote control code to 

“1”.

U701

HDMI does not work properly.

The  equipment connected by the HDMI cable is not com-
patible with this system’s copyright protection technology.

U704

HDMI does not work properly.

The system is receiving video signals that are incompatible
with it through HDMI connection. Check the settings of the
connected equipment.

U703

A problem has occured with the HDMI connec-
tion.

A problem has occurred with the HDMI connection. Try the
following to correct the problem. Consult your dealer if the
error code remains on the display.

• Turn the connected equipment off and on again.
• Disconnect the HDMI cable then reconnect it.
• Do not connect more than 2 equipment in series to the

output of this system.

NOT POSSIBLE FOR THIS INPUT
SOURCE
(Scrolling)

Input signals are automatically cancelled.

You cannot use Dolby Virtual Speaker, Dolby Pro Logic II
and SFC for dual sounds.

NOT POSSIBLE FOR THIS PCM
SOURCE
(Scrolling)

Input signals are automatically cancelled.

You  cannot use Dolby Virtual Speaker, Dolby Pro Logic
and SFC effect with PCM signals with sampling frequency
over 48 kHz.
SFC  is not available for multi-channel LPCM signal.

Remote Control

Test Mode Function and settings

Selector

Sound Mode

Other settings

Vol/Tone

SPEAKE LEVEL -

AUX 4

STEREO

Analog

-18dB/0dB

SPEAKER LEVEL 

CH

AUX 3

STEREO

E2 : OPT2, Others : Analog

-18dB/0dB

ENTER(OK)

TV

STEREO

Digital (OPT1)

-48dB/0dB

SFC MUSIC

AUX 2

STEREO

Digital (E2 : CAOX, Others : OPT2)

-48dB/0dB

MUTE

All indicators of FL are displayed. All LED are off.
Note: After this setting, only “POWER” button or “Checker Command” code by the remote control can be entered.

VOL +

Check Main 

μP software version.

Display [M---- ****]; ---- is current version; **** is current checksum. If no ROM correction, [NO] is displayed.
* Volume is still increased but not displayed.

VOL -

Check HDMI uP software Version.
Display [H---- ^^^^^]; ---- is current version.
* Volume is still increased but not displayed.