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MC-DX50i
AM I.F. ALIGNMENT
1. Set the POWER BUTTON to POWER "ON".
2. Set the Radio and band button to Radio and AM BAND.
3. Connect a SWEEPSCOPE OUTPUT to AM antenna terminal.
4. Connect a SWEEPSCOPE INPUT to pin17 of IC2 through a 1uf capacitor and ground.
STEP
SET SIGNAL
1
4455KHz
AM R.F. ALIGNMENT
1. Connect an RF generator to a standard radiating loop.
2. Connect a SCOPE and VTVM across the speaker output.
STEP
SET SIGNAL
1
515KHz
2
1640KHz
3
600KHz
4
1400KHz
5
REPEAT STEPS 3 AND 4 TO OBTAIN BEST TRACKING.
FM R.F. ALIGNMENT
1. Connect an RF generator to the FM antenna terminal and ground.
2. Connect a SCOPE & VTVM across the speaker output.
STEP
SET SIGNAL
1
76MHz
2
108MHz
3
90MHz
4
106MHz
5
REPEAT STEPS 3 AND 4 TO OBTAIN MAX ADJUST.
CD ALIGNMENT
Auto alignment.
4
3 ADJUSTMENTS AND CHECKS
ALIGNMENT PROCEDURES
SET DIAL
GANG OPEN
SET DIAL
GANG CLOSED
GANG OPEN
1400KHz
1400KHz
SET DIAL
GANG CLOSED
GANG OPEN
90MHz
1106MHz
ADJUST
T3
ADJUST
L6
PVC-D
L4
PVC-C
ADJUST
L3
PVC-A
L2
PVC-B
ADJUST FOR
CENTER
&MAXIMUM OUTPUT
ADJUST FOR
MAXIMUM
OUTPUT
ADJUST FOR
MAXIMUM
OUTPUT
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