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10. ALIGNMENT INSTRUCTIONS
AUDIO CIRCUIT ADJUSTMENT/CHECK

EQUIPMENT REQUIRED
1. DC Voltmeter

2. Audio Oscillator

3. Oscilloscope

4. AC Voltmeter

For location of connection points and trimmer resistors, see P.C.B. view.

MAIN AMP ADJUSTMENT/CHECK

NOTE: .
oMaintain voltage at 120 volts, 60 Hz AC. (UL. C.S.LI a
50 Hz for Australia 8 220/240 V AC, 50 Hz for Europe

oSet SELECTOR switch to AUX.
oSet Mode switch to Stereo.
oSee P.C.B. illustration for alignment points/adjustmns

CONNEC- AU DIO
STEP ADJUSTMENT EQUIPMENT TION FREQ. LEVEL
Check balance DC See No DC voltage
by measuring DC voltmeter Fig. 1 signal should be
1 voltage across within i 30 mV --
Output terminal
of L and R channel.
Idling current DC See NO Adjust voltage was
adjustment voltmeter Fig. 2 signal between TPI and TP2 V! I
(L chi and
2 TP3 and TP4 IR Ch)
to be 10 mV :2 mV
(8 ohm load)

For location of connection points and trimmer resistors, see P.C.B. view.

4,010+me m O'Iv:2
\ I
L our In Out) \
(T: '3) (TE) ,/7\
GROUND D T
l_.
MAIN AMP DC VOLTMETER MAIN AMP DC VOLT
[SOmV to +30mV) (SHIV N 2"
Figure 1 Figure 2
PROTECTOR CIRCUIT CHECK
STEP ADJUSTMENT EQUIPMENT CONNECTION 3:33: FREQ- SETTING LEVE.
Audio Osc. Fig. 3 1000 Hz VOLUME: Adjust ion-
AC Voltmeter max. to get W 8
1 Oscilloscope BASS, MID of 2 veils I -
8 TREBLE: load).
Center
Check if Same as Fig. 3 1000 Hz Same as No output *
protector STEP 1 STEP 1 after output
2 circuit is is shorted 7.
functioning
Check for Same equip- Fig. 3 1000 Hz Same as Normal at-
normal ment as STEP 1 output fig! 3
3 output STEP 1. driven inns
output load: at 4 ohm II
4 ohm

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