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- Very good scan quality, PERFECT!
- Sehr gute scan Qualitaet, empfehlenswert!
Wolfgang Sundhaus
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Good site, works ok and you get what you order, no problems experienced, got my manual within a day. A++++
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Original well scanned manual. Got the job done. Microwave problem found & corrected. For $5 and a new magnitron from ebay, it was a cheap and good the first shot fix. Electrical schematics allowed me to mage sure every thing else was ok before cutting and order for parts. Hard to live without.
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I was very skeptical of this website, I have never downloaded manuals before. I put it on the AMEX and payed through Paypal to ensure protection. I got the manual exactly as described and now I can replace the filter capacitor for this amp. Great Price, others selling for 12.99 or more and this is the same manual. I will search out this website for other manuals. Thank you
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Manual was reasonably easy to follow. I am not an engineer or know much about electronics but with the manuals help I was able to figure out the problem, identify the part required for the repair. Replacement part cost around $30. Whilst replacing the part I was telling myself, "this aint gonna work cos it seems far too easy". Took about 15 minutes to do and my plasma TV works a treat. Would never have been able to do this without the service manual.
HT-R557 OPERATION CHECK-2
SPEAKER PROTECT-2 (CURRENT DETECTION)
[When] 1. Exchange power transistors (Q6050 - Q6054, Q6060 - Q6064). 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.
FL display
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, check 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, check 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.
C lear
Standby
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