Service Procedures - Onkyo HT-R8230 Service Manual

SERVICE PROCEDURES

1. Replacing the fuses
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.
REF. NO. DESCRIPTION
F6901 8A-UL
F6901 or 8A-T/UL-ST2
F6902 8A-UL
F6902 or 8A-T/UL-ST2
F901 8A-UL
F901 or 8A-T/UL-ST2
F903 5A-UL/T-237
F903 or 5A-T/UL-ST2
3. 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 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 " C le a r " is displayed, the preset memory and each mode
stored in the memory, are initialized and will return to the
factory settings.
4. How to check version of microprocessor?
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.
ex.
Versi on 04212a
2. Press the STANDBY/ON button to Power Off.
PART NO. REMARKS
252198 !
252261 !
252198 !
252261 !
252198 !
252261 !
252164 !
252258 !
5. Memory Preservation
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.
HT-R8230