Galvin-Mfg-Co（Motorola）-SK-78-1 电路原理图.pdf

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1、VOL UME R-24, MOST-OFTEN-NEED ID 19(4 RADIO SER I ING INFORMATION MOTOROLA Model HK54-2, Chassis HS-996, JDIO INPUT vAM-FM V1 % 2SB56 used in various FM-Stereo comuinauuns EMITTER FOLLOWER V3 6AU6 38KC DOUBLER . _C12|/.Q1 M. 120K_ r-r-*p TEST I 41 a j 1 16 POINT XE1 NOTES CAPACITORS UNLESS OTHERWISE

2、 SPECIFIED, DECIMAL VALUES IN MF ALL OTHERS IN MMF. VOLTAGES * MEASURED FROM POINT INDICATED TO GROUND WITH A VTVM 10* NO SIGNAL IN. : jL. -i cj;: C m csi“ ( JUMPER E4 pi* vim PLUG V loo *iml =i E iPWR CONNECTOR Ipif in Uj IK BALANCED SYNCHRONOUS DETECTOR ft : i TT, j C If R23 56K i ipr sic TEST POI

3、NT2 _K ?R2* 56K s ffl 5 T 2SB56 : INVERTER 8 srft rr; B? :B S-;S HS-996AB SCHEMATIC DIAGRAM V3_ 6AU6 38KC DOUBLER RIGHT CHAN OUTPUT IUSED WITH THREE CHANNEL MODELS) LEFT CHAN 0UTPUT-_ INVERTED RIGHT CHAN OUTPUT- (USED WITH MULTI-CHANNEL MODELS) 1 1. OKI Svi ri yQ negative lead to ground. 2. Adjust L

4、-3 and primary and sec ondary of T-l for maximum indica tion on VTVM. 3. Move VTMV to Test Point 2 and adjust T-2 primary and secondary for maximum meter indication. 4. Move VTVM to Test Point 1 and while monitoring this voltage, care fully adjust L-3 for maximum sep aration in left and right speakers on program material. This maximum separation point should be very near peak meter indications. Adjustment of Sensitivity Control, R 5 The control should be set so that the stereo monitor lights on stereo sig nals but does not light on noise in between stations. 96 收音机爱 好者资料库 RadioFans.CN