Table of Contents
Advertisement
9. ELECTRICAL ADJUSTMENTS
1. DC offset adjustment
Master Volume : Minimum, Speaker out : non Load
Step
Power
1
on
Note : If the measured value is not exceed 20mV, no need to adjust the DC offset.
2. Iding current adjustment
Master Volume : Minimum, Speaker out : non Load
Step
Power
1
Power on
after
2
4 minutes
Time since power on
4–4 minutes 30 seconds
4m30s–5 minutes
5–5 minutes 30 seconds
5m30s–6 minutes
6–7 minutes
7-8 minutes
8-9 minutes
9-10 minutes
10-11 minutes
3. Thermostat circuit confirmation
1) When the product is POWER ON, remove the wire W701 from the connector J715 (P704).
2) FLD shows "ERROR PWR1".
3) Confirm the product is POWER OFF after 3 seconds.
4) Connect the wire W701 to the connector J715 (on P704).
5) Confirm the product is standby status.
Adjustment
Channel
Point
Front L
R715
Center
RT15
Front R
RP16
Surr. L
RP15
Surr. R
R716
Adjustment
Channel
Point
Front L
R743
Center
RT43
Front R
RP44
Surr. L
RP43
Surr. R
R744
J***:4P Connecter
R***:Emitter Resister
[ 0 . 1
Idling current adjust.
5.6mV
6.4mV
7.2mV
7.7mV
8.2mV
8.6mV
8.8mV
8.6mV
8.4mV
Test Point
Adjustment Vaule
Speaker Output
Terminal
Adjustment
Test Point
J713 or R773
JT13 or RT73
within 1 minute
JP04 or RP74
JP03 or RP73
J714 or R774
see table
for adjustment
[between 1p-4p)
x 2 (0.18
x 2)]
W
W
Time since power on
11-12 minutes
12-14 minutes
14-16 minutes
16-18 minutes
18-22 minutes
22-26 minutes
26-30 minutes
more than 30 minutes
62
20mV
Vaule
0.4mV
vaule
Idling current adjust.
8.0mV
7.6mV
7.2mV
6.5mV
5.6mV
4.9mV
4.4mV
4.0mV
The taget is 4.0mV
Advertisement
Table of Contents
