DTR-8.4
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.
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 the STANDBY ON button to turn on the unit.
2.Press and hold down the VIDEO 1 button, then press the
STANDBY/ON button.
3.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.
4.Unplug the power supply cord.
4. Memory Preservation
This unit does not require memory preservation batteries. A
built-in memory power back-up system preserves the contents
of the memory during power failures and even when the unit is
unplugged. The unit must be plugged in order to charge the
back-up system.
The memory preserv ation period after the unit has been
unplugged varies 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.
Note: <D>: 120V model only
<A>: Australian model only
REF. NO.
PART NO.
DESCRIPTION
F901
252196
12A-UL/T-314,Fuse <D>
F902
252078
5A-SE-EAK,
252244 or
5A-SE-TL250V or
252278
5A-SE-TL250V, Fuse <A>
F903
252164 or
5A-UL/T-237 or
252258
5A-T/UL-ST2,Fuse <D>
252075,
2.5A-SE-EAK,
252241 or
2.5A-SE-TL250V or
252275
2.5A-SE-TL250V,Fuse <A>
F9501,F9502
252160 or
2.5A-UL/T-237 or
252254
2.5A-T/UL-ST2,Fuse <D>
252075,
2.5A-SE-EAK,
252241 or
2.5A-SE-TL250V or
252275
2.5A-SE-TL250V,Fuse <A>
F9503,F9504
252158 or
1.6A-UL/T-237 or
252252
1.6A-T/UL-ST2,Fuse <D>
252073,
1.6A-SE-EAK,
252239 or
1.6A-SE-TL250V or
252273
1.6A-SE-TL250V,Fuse <A>
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
exceed 0.5mA.
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