Pioneer SA-708 - Adjustments; Idle Current Adjustment; Output Indicator Adjustment

7. ADJUSTMENTS
Idle Current Adjustment
L.
Turn the VOLUME control down to minimum
level, turn the power on, and wait about 10
minutes.
. Connect a DC voltmeter to the TP terminals
(L ch; TP4 © and TP3 ©, R ch; TP1 © and
TP2 0) of the GWK-130.
. Check that the voltage between TP4 and TP3
(L ch) lies within the DV DC 4mV—50mV
range. Then make a similar check for the R ch
(between TP3 and TP4). If the voltage is less
than 4.4mV, cut jumper A (L ch), and jumper
B (R ch). If the voltage exceeds 50mV, check
for circuit failure.
6
Jumper A
Output Indicator Adjustment
1.
2.
12
Set the TONE switch OFF position.
Set the SPEAKERS selector to the A position,
and connect an 8 resistor and AC voltmeter
to the speaker output terminals.
. Set the FUNCTION switch to the AUX posi-
tion, and apply a 1kHz, 150mV signal to the
AUX input terminals.
. Adjust the VOLUME control so that the volt-
age on the output terminals (SPEAKERS) read
9V (AC).
. Adjust VR1 (L ch) and VR2 (R ch) of the
indicator assembly so that the output power
indicator read 10 watts.
TP2 TP1
—— Os
"
Jumper B
Fig. 7-1
Indicator assembly
Panel stay
Fig. 7-2