DTR-7.3
SERVICE PROCEDURES
1. Replacing the fuses
3. Safety-check out
This symbol located near the fuses indicates (Only U.S.A. model)
After correcting the original service problem, perform the
that the fuse used is fast operating type. For continued
following safety check before releasing the set to the
protection against fire hazard, replace with same type fuse.
For fuse rating refer to the marking adjacent to the symbol.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.
Ce symbole indique que le fusible utlise est a
rapide. Pour une protection permanente, n'untiliser que 4. Memory Preservation
fusibles de meme type. Ce darnier est la qu le present
This unit does not require memory preservation batteries. A
symbol est appse.
built-in memory power back-up system preserves the contents
of the memory during power failures and even when the unit is
CIRCUIT NO. PART NO. DESCRIPTION
unplugged. The unit must be plugged in order to charge the
F6901,F6902 25219910A-UL, Fuse <D>back-up system.
25210010A-EAK, Fuse <A>
The memory preservation period after the unit has been
unplugged varies depending on climate and placement of theF901 25219910A-UL, Fuse <D>
F902 252077,4A-SE-EAK,
252243 or4A-SE-TL250V orunit. On the average, memory contents are protected over a
2522774A-SE-TL250V, Fuse <A>period of a few weeks after the last time the unit has been
F903 252075,2.5A-SE-EAK,unplugged. This period is shorter when the unit is e xposed to a
252241 or2.5A-SE-TL250V orhighly humid climate.
2522752.5A-SE-TL250V, Fuse <A>
F9501,F9502 252160 or2.5A-UL/T-237 or
2522542.5A-T/UL-ST2, Fuse <D>
252075,2.5A-SE-EAK,
252241 or2.5A-SE-TL250V or
2522752.5A-SE-TL250V, Fuse <A>
F9503,F9504 252158 or1.6A-UL/T-237 or
2522521.6A-T/UL-ST2, Fuse <D>
252073,1.6A-SE-EAK,
252239 or1.6A-SE-TL250V or
2522731.6A-SE-TL250V, Fuse <A>
Note:
<D>: 120V model only
<A>: Australian model model
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. |