DTR-5.4
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.DVD
CRCHANNEL
SPEAKER
OSCILLATORINPUT
TERMINAL
DIFFEREN-
TIATINGATTENU-UNIT
ATOR
CIRCUIT
50Hz
SQUARE
OSCILLO-
SCOPE
INPUT
3.3k0.1 F1SS133x63.3k
OUT-
PUT
35Vp-p
10k0.01 F
GND
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.
Test Mode Caution:Don't continue more than 3 seconds.
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
Confirmation of voltage sensor
1. Set the unit to Test-4-35 or Test-4-36.
All segments
light on.2. Confirm that the FM STEREO is displayed.
Confirm that the speaker relays of RL6901 and RL6902
SP-ASP-B turn off.
3. When connect the resistor 2.7 kohm/1 W between
the terminals COM and TH1 of P6301, confirm that
"FEDCBA987654321"
"FM STEREO" light on.
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
The segments of odd circuit operates.
number light on .Note: No input signal.
The segments of even
number light on .
Press POWER button
to finish the Test mode
of FL tube.
The informations of
unit are shown. |