Service Procedure - Onkyo HT-RC270(B) Service Manual

SERVICE PROCEDURE-1

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. PART NAME
F2000 FUSE
F2000 or FUSE
F2001 FUSE
F2001 or FUSE
F6901 FUSE
F6901 or FUSE
F6902 FUSE
F6902 or FUSE
F901 FUSE
2. Safety check out
(U.S.A. model only)
After correcting the original service problem, perform the following safety check before releasing the unit to the customer.
Leakage current Check
Measure the leakage current to a known earth ground (water pipe or conduct etc.) by connecting a leakage current
tester between the earth ground and exposed metal parts of the unit (input/output ground terminals, screw heads or metal overlays etc.).
Plug the power supply cord directly into a 120Vac 60Hz wall socket and turn ON/STANDBY button on.
Any current measured must not exceed 0.5mA.
3. Memory Backup
This model uses a EE-PROM IC in order to retain radio presets and other settings. So, memory contents will be
kept eternally with no care.
4. To initialize the unit
1. ON/STANDBY (Power On)
2. VCR/DVR + ON/STANDBY.
Cl e a r
Preset memory and each mode stored in the memory, are
initialized and will return to the factory settings.
DESCRIPTION PART NO.
4A-UL/T-233 252325GR
4A-T/UL-ST2 252257GR
2A-UL/T-233 252320GR
2A-T/UL-ST2 252253GR
15A-TUL-250V 252303GR
15A-UL/T-314 252197GR
15A-TUL-250V 252303GR
15A-UL/T-314 252197GR
10A-UL-ST6 N1 252382GR
ON/STANDBY
Stand-by
REMARKS
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VCR/DVR
HT-RC270