TX-SR402/8240/HT-R420
SERVICE PROCEDURES-1
120V
VOLTAGE SELECTOR
220-230V
120V
VOLTAGE
SELECTOR
220-230V
SWITCHED
100W MAX.
AC OUTLET
1. Replacing the fuses
2. Safety-check out
(Only U.S.A. model)
After correcting the original service problem perform the
following safety check before releasing the set to the customer
Connect the insulating-resistance tester between the plug of
power supply cord and terminal GND on the back panel.
Specifications: More than 10Mohm at 500V
This symbol located near the fuse indicates that the
fuse used is show 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 utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
3. To initialize the unit
This unit does not require memory preservation batteries.
A built-in memory power backup system preserves the contents of
memory during power failures and even when the power cord is unplugged.
The power cord must be plugged in order to charge the backup system.
The memory preservation period after the unit has been turned off varies
depending on climate and placement of the unit. On average, memory
contents are protected over a period of a few weeks after the time the unit
has been turned off.
This period is shorter when the unit is exposed to a very humid climate.
[NOTE]
<DD> : 120V model only
<DC> : 120V model only
<WT> : World wide model only
<GR> : Chinese model only for 220V
<PA> : Australia model only for230V
<PT> : Asian model only for 230V
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical sauce results in accident
which causes the specified operations and functions to operate
abnormally.
To perform a result, please follow the procedure below.
1. Press and the hold down the VIDEO 1 button , then press the
STANDBY/ON button when the unit is Power ON.
2. After "Clear " is displayed, the preset memory and each mode
stored in the memory, are initialized and will return to the
factory settings.
5. Memory Preservation
6.Setting the voltage selector
(Worldwide models only)
The Worldwide model has a voltage selector for compatibility with
power systems around the world. Before you plug in this model,
make sure that the voltage selector is set to the correct voltage for
your area. If it isn't, use a small screwdriver to set it as appropriate.
For example, if the voltage in your area is 120 volts (V), set the
selector to "120V. " And if it's between 220 and 230 volts (V), set it
to "220-230V."
REF NO.
PART NO. DESCRIPTION
NOTES
F6901,F6902
F6901,F6902
F6901or,F6902or
F901
F901 or
F902
F902 or
F902 or
F903
F903 or
F903 or
F903
F903 or
252099
252198
252261
252198
252261
252076
252242
252276
252075
252241
252275
252164
252258
8A-EAK
FUSE
8A-UL
8A-T/UL-ST2
8A-UL
8A-T/UL-ST2
3.15A-SE-EAK FUSE
3.15A-SE-TL250V
3.15A-SE-TL250V
2.5A-SE-EAK FUSE
2.5A-SE-TL250V
2.5A-SE-TL250V
5A-UL/T-237
5A-T/UL-ST2
GR,WT,PA,PT
DC,DD
DC,DD
DC,WT,DD
DC,WT,DD
GR,WT,PA,PT
GR,WT,PA,PT
GR,WT,PA,PT
GR,WT,PA,PT
GR,WT,PA,PT
GR,WT,PA,PT
DC,DD
DC,DD
Main microprocessor Q7008.
1. Press and the hold down the DISPLAY button , then press the
STANDBY/ON button when the unit is Power ON.
Version is displayed on FL display only for 3 seconds.
2. Press the STANDBY/ON button to Power Off.
Sub microprocessor Q7502.
Check is impossible. (Unnecessary)
4. How to check version of microprocessor?
Version 30212a
ex.
