RG-361 ALIGNMENT PROCEDURES
AM IF. ALIGNMENT
1, Set the FUNCTION switch to “RADIO” position.
2, Set the BAND switch to “AM” position.
3, Connect a SWEEPSCOPE OUTPUT to AM standard radiating loop antenna and match the
direction for built-in ferrite bar of AM antenna.
4, Connect a SWEEPSCOPE INPUT to pin 13 or 14 of IC1 through a 1uf capacitor and GND.
STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR
1 465KHz LOW-END OF BAND T3( IFT,YELLOW) CENTER & MAXIMUM OUTPUT
AM RF. ALIGNMENT
1, Connect a RF GENERATOR to the standard radiating loop antenna.
2, Connect a SCOPE and VTVM across the speaker output
STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR
1 520KHz LOW-END OF BAND T5(AM OSC) MAXIMUM OUTPUT
2 1650KHz HIGH-END OF BAND P.V.C C3 MAXIMUM OUTPUT
3 REPEAT STEP 1 & 2 TO MAXIMUM
4 610KHz NEAR 610KHz L104 (AM SENS COIL) MAXIMUM OUTPUT
5 1400KHz NEAR 1400KHz P.V.C C4 MAXIMUM OUTPUT
REPEAT STEP 4 & 5 TO MAXIMUM
FM IF. ALIGNMENT
1, Set the BAND switch to “FM” position.
2, Connect a SWEEPSCOPE OUTPUT to pin 23 of IC1 through a 20pf capacitor and GND.
3, Connect a SWEEPSCOPE INPUT to pin 13 or 14 of IC1 through a 1uf capacitor and GND.
STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR
1 10.7MHz CF1
(FM DISCRI.,PINK)
WITH 10.7MHz AT ZERO CROSSOVER
& MAKE THE “S” CURVE TO FINER.
2 REPEAT STEP 1 TO FINEL
FM RF. ALIGNMENT
1, Connect a RF GENERATOR to the terminal of FM telescope antenna and GND.
2, Connect a SCOPE and VTVM across the speaker output.
STEP SET SIGNAL SET DIAL ADJUST ADJUST FOR
1 87.5MHz LOW-END OF BAND L1(FM OSC) MAXIMUM OUTPUT
2 108MHz HIGH-END OF BAND P.V.C C2 MAXIMUM OUTPUT
3 REPEAT STEP 1 & 2 TO MAXIMUM
4 90.1MHz NEAR 90.1MHz L2(FM SENS COIL) MAXIMUM OUTPUT
5 106.1MHz NEAR 106.1MHz P.V.C C1 MAXIMUM OUTPUT
6 REPEAT STEP 4 & 5 TO MAXIMUM
CASSETTE PARTS ALIGNMENT
1, MOTOR TURNSPEED: Adjust the screw at motor back side to make the output signal near
3KHz while play the 3KHz standard tape. It used frequency meter connected output.
2, HEAD AZIMUTH: Adjust the screw of head azimuth to make the 6.3KHz signal to maximum.
It play the 6.3KHz standard tape and used VTVM connected output.
PAGE 17 ,TOTAL 31
To Next Page
Loading...
