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There are currently no product reviews.
 ;
Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
;
Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
;
Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
;
Very fast and perfect delivery. Clear and well scanned. A lot of work professionally realized.
Again thak you a lot
 ;
This manual is accurate and of high quality. It is only volume 2 of the service manual. This is schematic, parts lists, and exploded mechanical drawings. The theory of operation and the diss-assembly instructions are in volume 1. The unit can be tricky to dis-assemble portions of so the volume 1 manual can be important. The product description of the manual is accurate but it does not say anything about volume 1 and the image of the front page does clearly say Volume 2.
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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