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ONKYO HT-R550
Service Manual


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  • Contains Circuit Diagrams
  • Download
  • PDF Format
  • Complete manual
  • Language: English
Price: $4.99

Description of ONKYO HT-R550 Service Manual

Complete service manual in digital format (PDF File). Service manuals usually contains circuit diagrams, printed circuit boards, repair tips, wiring diagrams, block diagrams and parts list. Service Manual ( sometimes called Repair Manual ) is used mainly by technicians.

If You just want to know how to use Your tv, video, mp3 player etc. You should look for Owner's Manual. After placing order we'll send You download instructions on Your email address.

The manual is available in languages: English

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Text excerpt from page 62 (click to view)
TX-SR505/505E OPERATION CHECK-2
SPEAKER PROTECT-2 (CURRENT DETECTION)
[When] 1. Exchange power transistors (Q6050 - Q6056, Q6060 - Q6066). 2. Exchange amplifier PC board ass'y (NAAF-8779). <Note> 1. No input. 2. Do not check two or more channels at the same time. 3. Do not connect a dummy load to speaker terminal longer than 2 seconds. [Procedure] 1. Press and hold down CD button, then press STANDBY/ON button while the unit is powered on. " Test - _ " is displayed only for 5 seconds.

T e st - _

Blinks

2. Press AUX button, while " Test - _ " is displayed. The unit will be in the state of " Test-4-00 ".

T e st - 4- 00
3. Repeatedly press + (TONE) button until " Test-4-35 " is displayed.

T e st - 4- 35
4. Connect the dummy load of 3 ohms to the Front L ch speaker terminals. At this time, confirm that the speaker relay is not turned off.

T e st - 4- 35
5. Connect the dummy load of 1 ohm to the Front L ch speaker terminals. At this time, confirm that the speaker relay is turned off and " Protect " is displayed.

P rotect
Disconnect the dummy load immediately after checking the display of " Protect ".

T e st - 4- 35
6. Check other channels according to the same procedure as 4 and 5. 7. Press the STANDBY/ON button. Turn off

C lear

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Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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