Westinghouse-Electric-Corp-V-2508-11 电路原理图.pdf

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1、VOLUME R-22, MOST-OFTEN-NEEDED 1962 RADIO SERVICING INFORMATION WESTINGHOUSE Models H-76ACS1, H-76ACS2 Chassis V-2508-11 STEREO CARTRIDGE RIGHT CHAN. Rl 2 MEG VOL. cont. R3 J 6K 68 I CHASSIS REMOVAL 1. Remove the perforated tube-service cover which is at tached by 2 phillips screws. 2. Remove the 4

2、phillips screws holding the motor board. Lift the motor board. 3. Disengage the amp-lok from the changer and unsolder the leads to the changer terminal board. 4. Remove Volume control knobs. 5. Remove the 2 speed nuts holding the chassis to the cabinet front. 6. Disconnect the speaker leads. e T, UN

3、TINNED COPPER, RIDGE . k S% ON INSULATION_ LS F TINNED COPPER RIGHT SPEAKER 4 3.2 il QRN/WHT 1 red/whtI r LI .047 CHASSIS GROUND R5 2 MEG vol.cont.5 r-l85v 27oa_ L*2 UNTINNED COPPER,RIDGE S ON INSULATION_ p.75n F TINNED COPPER left speaker 4 3 2 il fo OFF ON SWITCH 1 PART OF 1 RECORD changer AC PHON

4、O MOTOR . 50EH5 35W4 50EH5 50EH5 AUDIO OUTPUT 35W4 RECTIFIER j terminal nearest color dot NOTES- 1. D C.VOLTAGES MEASURED FROM CIRCUIT GROUND USING A VTVM, LOUDNESS CONTROL AT MINIMUM. 2. ALL CAPACITANCE VALUES ARE IN MFD,ft ALL RESISTANCE f VALUES IN OHMS, 1/2 WATT, UNLESS OTHERWISE SPECIFIED : 3.

5、BOTH TRANSFORMER WINDINGS ARE IN THE SAME DIRECTION t CIRCUIT GROUND 收音机爱 好者资料库 RadioFans.CN ISO VAC VOLUME R-24. MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION WESTINGHOUSE Chassis V-2508-13, Models H-85MP1, H-85MP2, H-85MP3 -i Rl 500K1 R7 n 470K lC2B faOMFD 270 CHASSIS GROUND SWI ON VOL.CONT.

6、C2C BOMFD : 90 VAC PHONO MOTOR CARTRIDGE REPLACEMENT FUSIBLE 1. Remove the knob retainer screw and turnover knob. 2. Pull the cartridge out from the tone arm. Remove the spring, washer, and push-on connectors. CHASSIS REMOVAL 1. Remove two nylon-head screws from bottom of cabinet base. 2. Remove tur

7、ntable. 3. Remove two screws located underneath turntable. 4. Snap the edge of the motorboard out of the retaining grooves in the cabinet. Lift motorboard out of cabinet. CHASSIS V-2508-11, MODEL H-87ACS1 STEREO CARTRIDGE RIGHT CHAN. BLACK ft YELLOW Rl MEG VOUCONTi 50EH5 . AUDIO OUTPUT MOV is- JT CH

8、ASSIS REMOVAL 1. Remove the tube service cover. 2. Remove the speaker compartment cover on the left side of the cabinet. 3. Remove the screws holding the motorboard. Lift the motor- board out of the cabinet. 4. Disengage the amp-lok from the changer. Unsolder the leads to the changer terminal board

9、and the leads to the speakers. 5* Remove the control panel screws and lift the control panel out of the cabinet. The chassis is attached to studs on the underside of this panel. UNTINNED COPPER, RIOGE S ON INSULATION_ TINNED COPPER RIGHT SPEAKER 4 3.2 IL CHASSIS GROUND ittTi ,J smesL-Jc VOL.CONT? un

10、tinned copper,ridge ON INSULATION_ TINNED COPPER LEFT SPEAKER 4“ 3-2 It OFF ON SWITCH PART OF RECORD CHANGER AC PHONO MOTOR V-2508- II - 50EH5 35W4 50EH9 50EH5 AUDIO OUTPUT 3SW4 RECTIFIER -L -L terminal newest color dot NOTES: 1. D.C.VOLTAGES MEASURED FROM CIRCUIT GROUND USING A VTVM, LOUDNESS CONTROL AT MINIMUM. 2. ALL CAPACITANCE VALUES ARE IN MFD(ft ALL RESISTANCE VALUES IN OHMS, 1/2 WATT, UNLESS OTHERWISE SPECIFIED. 3. GOTH TRANSFORMER WINDINGS ARE IN THE SAME DIRECTION. CIRCUIT GROUND 168 收音机爱 好者资料库 RadioFans.CN