Onkyo HT-R8230 - Page 41

OPERATION CHECK-3
OUTPUT LEVEL & THERMAL DETECTION
HT-R8230
P6301
COM
TH1
TH2
7
25
25
27
27
27
27
25
25
12
12
25
25
17
15
12
20
12
12
22
25
17
17
17
15
17
15
15
12
12
20
17
17
25
2215
20 17
12
27
25
17
20
20
12
25
22
17
17
15
20
15
22 15
20
12
17
17
20
20
22
17
30
27
30
30
7 7
15 15
7
30
7
7 7
20
20
25
30
7
30
22
20
12
12
25
30
27
20
30
7
12
22
12
12
12 12
15
15
7
25
25
20
25
U16
NAAF-8245
POWER AMPLIFIER PC BOARD
P6301
TH1
COM
Front side
2.7 kohms
1W
Output level detection
1. Set the unit to test mode " Test-3-2 "
1-1. Press and the hold down the CD button , then press the STANDBY/ON button when the unit is Power ON.
1-2. Press the VIDEO 2 button, while the display of " Test - _ " has come out.
Unit will be in the state of " Test-3-00 ".
1-3. Repeat and press SPEAKERS B until the display of " Test-3-2 " comes out.
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 display come out.
6. Press the STANDBY/ON button, and exit from test mode.
Test - _
Test - 3-00
Test - 3-02
Test - 3-02
FM STEREO
FM STEREO
Thermal detection
1. Set the unit to test mode " Test-3-2 "
Refer to the clause of "Output level detection".
2. Connect the resistor 2.7 kohms /1W between " HT1 " and " COM " terminals of P6301.
3. Check that FM STEREO indicator is display come out.
6. Press the STANDBY/ON button, and exit from test mode.
Test - 3-02
FM STEREO
FM STEREO
<Check by test mode>
The following is the procedure of checking detection operation of a microprocessor in false, by using test mode.
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