2. To initialize the unit
The TX-L55/LR552 contain a micro processor for signal processing
and control functions. In very rare situations, severe interference,
noise from an external source, or static electricity may cause it to lockup.
In the unlikely event that this happens, unplug the power cord from the
wall outlet, wait at least Þve seconds, and then plug it back in again.
3. Safety-check out
(U.S.A. model only)
After correcting the original service problem, perform the
following safety check before releasing the set to the customer.
Leakage Current Check
Measure leakage current to a known earth ground(water pipe,
conduit, etc.) by connecting a leakage current tester between
the earth ground and exposed metal parts of the appliance
(input/output terminals, screwheads,metal overlays, etc.).
Plug the power supply cord directly into a 120V AC 60 Hz outlet
and turn Standby switch on. Any current meausred must not
1. Replacing the fuses
This symbol located near the fuses indicates that the
fuse used is fast operating type. For continued protection against
fire hazard, replace with same type fuse. For fuse rating refer to
the marking adjacent to the symbol.
Ce symbole indique que le fusible utlise est a rapide.
Pour une protection permanente, n'untiliser que fusibles de
meme type. Ce darnier est la qu le present symbol est
5.Setting the AM tuning step frequency
(Asian models only)
CIRCUIT NO. PART NO.
Note: <D>:120V model only
<P>: 230V model only
<G>: 220V model only
To reset the TX-L55/LR552 to its f actor y defaults, turn it on and,
while holding down the [
] TUNING button, press the
[STANDBY/ON] button. When the reset is complete,
"Clear" appears on the display and the TX-L55/LR552 enter
The TX-L55/LR552 use a battery-less memory backup sys-
tem (C7001) in order to retain radio presets and other settings
when it's unplugged or in the case of a po wer failure.
Although no batteries are required, it must be plugged
into an AC outlet in order to charge the backup system.
Once it has been charged, the TX-L55/LR552 will retain the
settings for several weeks, although this depends on
the environment and will be shorter in humid climates.
If you are using the Asian model, you need to set the AM
tuning interval for compatibility with AM broadcasts in
your particular country. The initial setting is 9 kHz.
Use the INPUT SELECTOR [TUN]
button to select AM.
Press the REMOTE MODE [AMP]
button followed by the [SETUP]
All presets will be deleted when you change the AM
Use the Up and Down [
buttons to select Ò6.Hardware,Ó
and then press [ENTER].
Use the Left and Right [
buttons to select:
9 K: North America
10 K: Other countries
Press the [SETUP] button.
The setup menu closes.