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ONKYO HTR820THX
Service Manual


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

Description of ONKYO HTR820THX 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 7 (click to view)
HT-R820THX OPERATION CHECK-4
OUTPUT LEVEL & THERMAL DETECTION
<Operation check of microprocessor by test mode>
The following is the procedure of checking detection operation of a microprocessor in false, by using test mode.

Output level detection
1. Set the unit to test mode " Test-3-3 " 1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power On.

Te st - _
1-2. Press the VIDEO 2 button, while the " Test - _ " is shown. Unit will be in the state of " Test-3-00 ".

Te st - 3- 00
1-3. Repeat and press SPEAKERS B button to the " Test-3-3 " is shown.

Te st - 3- 03
2. Apply signal (sine wave 1kHz, -1.5dBV) to MULTI CHANNEL (FL, FR, SL, SR, C) terminal, each channel. 3. Check that FM STEREO indicator is shown.
FM STEREO

FM STEREO

Test - 3-0 3
4. Press the STANDBY/ON button to power Off. (Exit from the test mode.)

Thermal detection 1. Set the unit to test mode " Test-3-3 " Refer to the clause of " Output level detection ". 2. Connect the resistor 1.8kohms /1W between " HT2 " and " COM " terminals of P6301.

P6301 1.8 kohms 1W
TH1 TH2 COM
COM TH2 P6301

TH1

Front side

U16 NAAF-8245
POWER AMPLIFIER PC BOARD

3. Check that FM STEREO indicator is shown.
MEMORY

MEMORY

Test - 3-0 3
4. Press the STANDBY/ON button to power Off. (Exit the test mode.)

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HT-R820THX ONKYO
Owner's Manual

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