TX-DS797
SERVICE PROCEDURES
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
appse.
CIRCUIT NO.
PART NO.
DESCRIPTION
F901
252199
F902
252077,
252243 or
252277
F903
252075,
252241 or
252275
F9501,F9502
252160 or
252254
252075,
252241 or
252275
F9503,F9504
252158 or
252252
252073 or
252239
10A-UL/T-314,Fuse <D/WT/GT>
4A-SE-EAK,
4A-SE-TL250V or
4A-SE-TL250V,Fuse <P/WT/R/A/GT>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <P/WT/R/A/GT>
2.5A-UL/T-237 or
2.5A-T/UL-ST2,Fuse <D>
2.5A-SE-EAK,
2.5A-SE-TL250V or
2.5A-SE-TL250V,Fuse <P/WT/R/A/GT>
1.6A-UL/T-237 or
1.6A-T/UL-ST2,Fuse <D>
1.6A-SE-EAK or
1.6A-SE-TL250V,Fuse <P/WT/R/A/GT>
Note: <D>:120V model only
<P>: European model only
<WT>: Worldwide model only
<R>: Asian model only for 230V
<GT>: 220V model only
<A>: Australian model only
2. To initialize the unit
This device employs a microprocessor to perform various
functions and operations. If interference generated by an external
power supply, radio wave, or other electrical source 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 hold down the VIDEO 1 button, then press the
STANDBY/ON button.
2.After "clear" is displayed, the preset memory and each
mode stored in the memory, such as surround, are
initialized and will return to the factory setting.
3. 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 screw on the back panel.
Specifications: 3.3Mohm·} 10% at 500V.
4. Memory Preservation
This unit does not require memory preservation batteries. A
built-in memory power back-up system preserv es the contents
of the memory during po wer f ailures and even when the unit is
unplugged. The unit must be plugged in order to char ge the
back-up system.
The memory preserv ation period after the unit has been
unplugged v aries depending on climate and placement of the
unit. On the average, memory contents are protected over a
period of a fe w weeks after the last time the unit has been
unplugged. This period is shorter when the unit is exposed to a
highly humid climate.
Worldwide models are equipped with a voltage selector to conform with
local power supplies. Be sure to set this switch to match the voltage of
the power supply in your area before plugging in the unit.
1. Determine the proper voltage for your area: 220-230 V or
120 V.
2. If the preset voltage is not correct for your area, insert a screw-
driver into the groo ve in the switch. Slide the switch all the w a y
to the right (120 V) or to the left (220-230 V), which ever is
appropriate.
5.Setting the Voltage selector (Worldwide models
onl y)
A
1
2
3
4
5
B
C
D
E
F
G
H
