Test Mode - Integra DTR-6.4 Service Manual

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ADJUSTMENT AND CONFIRMATION PROCEDURES 2
3. Confirmation of Current detection circuit
Set the unit to "Test-1-00".
Connect the differentiating circuit and apply the 50Hz square signal to DVD INPUT terminal
of each channel.
Adjust the attenuator or Volume so that the output level becomes 35V p-p.
Confirm that the speaker relay does not turn OFF when a 3.0 ohm load is connected.
Confirm that the speaker relay turns off when a 1.5 ohm load is connected.
Caution:Don't continue more than 3 seconds.
CR
OSCILLATOR
50Hz
SQUARE
INPUT
3.3k
GND
TE
L 13942296513

Test Mode

1. Turn POWER button on.
2. Press and hold down CD button, then press STANDBY/ON button.
3. After "Test-1" on the FL tube is displayed, press CD button to set the unit to the Test mode of FL tube.
Note: VIDEO 1:Test-1 VIDEO 2 :Test-2 REC OUT: UP
VIDEO 3 :Test-3 VIDEO 4:Test-4 ZONE 2: DOWN
Test mode of FL tube
All segments
light on.
SP-A
"FEDCBA987654321"
light on.
The segments of odd
number light on .
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The segments of even
number light on .
Press POWER button
.
to finish the Test mode
of FL tube.
The informations of
unit are shown.
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DIFFEREN-
ATTENU-
TIATING
ATOR
CIRCUIT
0.1 F 3.3k
1SS133x6
10k
Differentiating Circuit
Set the unit to "Test-1-02".
Connect the differentiating circuit and apply the 50Hz square signal to the center channel of
DVD terminal.
Adjust the attenuator or Volume so that the output level of surround back becomes 35V p-p.
Confirm that the speaker relay does not turn OFF when a 3.0 ohm load is connected.
Confirm that the speaker relay turns off when a 1.5 ohm load is connected.
Caution:Don't continue more than 3 seconds.
SP-B
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2 9
8
DVD
CHANNEL
SPEAKER
INPUT
TERMINAL
UNIT
OSCILLO-
SCOPE
OUT-
PUT
0.01 F
Q Q
3 6 7 1 3
Confirmation of voltage sensor
1. Set the unit to Test-4-35 or Test-4-36.
2. Confirm that the FM STEREO is displayed.
Confirm that the speaker relays of RL6901 and RL6902
turn off.
3. When connect the resistor 2.7 kohm/1 W between
the terminals COM and TH1 of P6301, confirm that
"FM STEREO" light on.
Note: No input signal.
4. When connect the resistor 2.2 kohm/1 W between
the terminals of P6302, confirm that
"MEMORY" on FL tube lights on and the protection
circuit operates.
Note: No input signal.
.
9 4 2 8
35Vp-p
1 5 0 5 8 2 9 9 4
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co
DTR-6.4
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