Am(Mw) Adjustment; Fm Section Adjustment - Akai AC-M2 Service Manual

6-1. AM (MW) ADJUSTMENT
1) Connect test equipment as shown in Fig. 6-3.
2) Function Switch to AM.
3) Generator modulation is 400 Hz, 30%.
4) Proceed as outline in the Chart.
APPROX
600mm
TEST LOOP
ANTENNA
AM _S.S.G
AC
SEI VOLTMETER
O
OUTPUT
©
:
Leh OR Reh O
Step
Adjusmuent
Input Signal adieinent
Result
Tf
Remarks
Item Point
ne — —|
Maximum e Turn the Tuning Dial
1 AM IF
459 kHz 50 dB IT202
output {= counterclockwise.
| >
AM Local OSC
510 kHz 50 dB L109
Maximum
e Turn the Tuning Dial
(Low)
output
fully counterclockwise.
3
AM Local OSC
1650 kHz 50 dB
TC103 Maximum
e Turn the Tuning Dial
(High)
output
fully clockwise.
4
Repeat Step 2 and 3 as Required.
5 | LowRange
| ¢ookHz 50dB | L108
Maximum | , Tune to signal.
Sensitivity output
| 6 | HighRange | i4o0kHz 50dB | C102
Maximum |. Tune to signal.
Sensitivity
output
7
Repeat Step 5 and 6 as required.
|
6-2. FM SECTION ADJUSTMENT
2) Push the FM Button.
3) Generator modulation is 1 kHz, 75 kHz diviation.
4) Proceed as outline in the Chart.
AC
VOLTMETER
Lert cH ©
SPEAKER
TERMINAL
EXT,MOD O
OUTPUT K
O INPUT O
RIGHT CH
SPEAKER
TERMINAL
AC
VOLTMETER
FM STEREO
GENERATOR
Fig. 6-4
SERVICE MANUAL AC-M2
11