Galvin-Mfg-Co（Motorola）-52C1 电路原理图.pdf

《Galvin-Mfg-Co（Motorola）-52C1 电路原理图.pdf》由会员分享，可在线阅读，更多相关《Galvin-Mfg-Co（Motorola）-52C1 电路原理图.pdf（8页珍藏版）》请在收音机爱好者资料库上搜索。

1、MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS Motorola MODEL 52 Cl 52C1A CHASSIS HS-309 (Service material continued on next page) ? c1 -J-Iih : ll I* “t2 “ :-i ,lj, as* si li| iis Pi o3 i, gSin s g fSd Q- UJ - I O+l ,1 UJ :w J O * Jr?* j uj 2 z Q he , c w O 3uj*i=s Sid 2*12 L 3 SI _j 收音机爱 好者资料库 Ra

2、dioFans.CN I2AT6 DET-AVC I I2BD6 I2BE6 R5 IF AMP R2 Tl CONV ADJUST MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS MOTOROLA Model 52C1, Chassis HS-309, continued. R8 C5 R7 A DUMMY STEP ANTENNA For circuit diagram and dial stringing data see preceding page. ALIGNMENT NOTE: It is recommended that an i

3、solation transformer oe placed between the power line and the receiver to avoid hum and electrical shocks. If an isolation transformer is not available, connect the low side of the signal generator to chassis through a . 1 mf capacitor. 1# Connect a low range output meter across the speaker voice co

4、il. 2. Connect the low side of the signal generator to chassis. 3. Set the signal generator for 400 cycle, 30% modulation. 4. Turn the receiver volume control to maximum. 5. Use a small fibre screwdriver for aligning the IF and |diode transformers. 6. As stages are brought into alignment, reduce the

5、 signal generator output to a level which produces less than . 40 volts (. 05 watts) across the voice coil to avoid overloading the receiver. GENERATOR CONNECTION GENERATOR FREQUENCY GANG SETTING REMARKS IF ALIGNMENT 1. I .1 mf RF ALIGNMENT 2. I 3. .1 mf Grid of conv. (pin 7, I2BE6) Fully 1,2, 3 & 4

6、 Adjust for maximum, open (IF cores) j Set pointer to hori zontal position. Grid of conv. 1620 Kc (pin 7, 12BE6) Radiation loop* 1400 Kc Fully 5 (osc) open Tune for 6 (Ant) max Adjust for maximum, Adjust for maximum, Connect generator output across 5 diameter, 5 turn loop and couple inductively to receiver loop. Keep loops at least 12” apart. *s. *s. SEC (TOP) (3) ( 1 JSEC (TOP) IF 455 KC PRi (BOT) DIODE 455 KC PR! (BOT) ANT 1400 KC OSC 1620 KC 50C5 I2BE6 CONV I2BD6 RECT I2AT6 35W4 TUBE AND TRIMMER LOCATION 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN