Service Procedure - Integra DTR-7.8 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.
<Notes>
: DTR-7.8 USA and Canadian model
<DD>
<MA> : DTR-7.8 Australian model
REF NO. PART NAME
F2501 FUSE
F2502 FUSE
F6601 FUSE
F6602 FUSE
F6603 FUSE
F6604 FUSE
F9000 FUSE
F9100 FUSE
F9100 FUSE
F9101 FUSE
F9102 FUSE
F9301 FUSE
2. To initialize the unit
1. Press and hold down VCR/DVR button, then press STANDBY/ON button when the unit is powered on.
2. After " C le ar " is displayed, the preset memory and each mode stored in the memory are initialized and will
return to the factory settings, and turn to Standby mode.
3. 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 STANDBY/ON button on.
Any current measured must not exceed 0.5mA.
4. 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.
DESCRIPTION PART NO.
4A-UL/T-233 252325GR
4A-UL/T-233 252325GR
20A-UL-250V
252304GR
20A-UL-250V 252304GR
20A-UL-250V 252304GR
20A-UL-250V 252304GR
5A-UL/T-233 252326GR
12A-UL-ST6 252340GR
6.3A-SE-EAK 252079GR
252325GR
4A-UL/T-233
4A-UL/T-233 252325GR
4A-UL/T-233 252325GR
.
REMARKS
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DTR-7.8