Integra DTR-4.9 Service Manual

DTR-4.9
ADJUSTMENT PROCEDURE-1
IDLING CURRENT ADJUSTMENT
[Procedure]
Refer to "ADJUSTMENT PROCEDURE-2 " for the adjustment points and the test points.
<Note> No load and No signal
1. Before idling adjustment, turn the trimming resistors fully to counter clockwise.
2. Connect the dc voltmeter to test points,
using two 100 ohm resistors between the poles of the jig terminal and the dc voltmeter terminals.
3. Connect the ac power cord to a wall outlet. And press On/Standby button to turn the power on.
4. Adjust the trimming resistors as the following procedure immediately after power on.
5. Wait for 4 - 6 minutes. (Heat running)
6. Re-adjust the trimming resistors as the following procedure.
7. Disconnect the dc voltmeter.
8. Press On/Standby button to turn the power off. And disconnect the ac power cord.
Adjustment point
R6040
R6040
R6041
R6041
R6042
R6042
R6043
R6043
R6044
R6044
Adjustment value
2.5 mV
2.5 mV
1.5 mV
1.5 mV
Test point
P6080
P6080
P6081
P6081
P6082
P6082
P6083
P6083
P6084
P6084
9 mV
9 mV
Leave it as it is
Leave it as it is
11 mV
11 mV
6 mV
6 mV
Leave it as it is
Leave it as it is
8 mV
8 mV
In below 9 mV
In case 9 - 11 mV
In case over 11 mV
In case below 6 mV
In case 6 - 8 mV
In case over 8 mV
Channel
Front Left
Front Right
Center
Surround Left
Surround Right
Front Left, Front Right
and Center
Surround Left
Surround Right
ID+
ID-
Test point
DC voltmeter
Jig terminal
100 ohms
(1/4 watt)
12 +/- 3
12 +/- 3
mV
9 +/- 3
9 +/- 3
mV
<Notes>
Idling currents are stabilized in about 10 minutes after power on.
[When]
1. Exchange Power transistor (Q6050 - Q6054, Q6060 - Q6064).
2. Amplifier PC board (NAAF-9424).
Channel Measured value Adjustment value
Specifications

Integra DTR-4.9 Specifications

General

Brand	Integra
Model	DTR-4.9
Category	Receiver
Language	English