Teac MC-DX50i - 3 ADJUSTMENTS AND CHECKS; Radio Alignment Procedures; CD Alignment and PCB Test Points

4
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 SET DIAL ADJUST ADJUST FOR
1 4455KHz GANG OPEN T3
CENTER
&MAXIMUM OUTPUT
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 SET DIAL ADJUST ADJUST FOR
1 515KHz GANG CLOSED L6
MAXIMUM
OUTPUT
2 1640KHz GANG OPEN PVC-D
3 600KHz 1400KHz L4
4 1400KHz 1400KHz PVC-C
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 SET DIAL ADJUST ADJUST FOR
1 76MHz GANG CLOSED L3
MAXIMUM
OUTPUT
2 108MHz GANG OPEN PVC-A
3 90MHz 90MHz L2
4 106MHz 1106MHz PVC-B
5 REPEAT STEPS 3 AND 4 TO OBTAIN MAX ADJUST.
CD ALIGNMENT
Auto alignment.
3 ADJUSTMENTS AND CHECKS
ALIGNMENT PROCEDURES