Onkyo DTA 9.4 Service Manual
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Extracted text from Onkyo DTA 9.4 Service Manual (Ocr-read)
Page 1
2A1 NISSHIN-CHO,NEYAGAWA7$HI,OSAKA 572A854OJAPAN
Service EngineeringGmup, Customer Relations Dept.
NO:03007
MANAGER GL DESIGN
Kiyoshi Matsuoka Seiji lchikami Terukazu Matumi
| 2003/07/25 || 2003/07/25 || 2003/07/25 |
[MODELS : DTA-9.4 l
ISUBJECT 2 Improvement of the sensitivity of DC detection circuit I
Symptom:
When an excessive signal is inputted into amplifier, DC detection circuit operates and results No sound.
Cause:
The DC current detection circuit is too sensitive.
Procedure for service:
In NAAF-7797 R593, chip resistor is changed from 10K to 3.3K
DAT-9.4 has seven units of N AAF-7797 and do this change for all units.
ICircuit N0. Before change II After change Description Remarks I
I Part No. Description Part No. II II I
IR593 435031034121 IIRN72K1J-103J 435033324121 IIRN72K1J-332J || |
Refer to the attached file---Page 2
Application: ...All seven power amplifier modules per unit.
Marking: Mark "A" after the serial number.
Revised: By Gedion Teklewolde
History:
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