Admiral-925 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION Admiral CHASSIS 2E1 2E1A MODELS 925 929 938 RECORD CRANCER MO. *2400-001-013 I- I - SI REJ-0N-DFF f 50EH5 LEFT CHANNEL OUTPUT tV / R5.33K f LOUDNESS N R2 I NEC C20 R 2D“f*,SOV I NEC . LOUDNESf 5/ rlbk ( 50EH5 v RIGHT CHANNEL OUTPUT V2 A

2、C INPUT CIRCUIT FOR 2 El CHASSIS nr VOLTS, 80 M7S SO CYCLES, AC 0MLY R4 RECTIFIER R6 4T Vi RED END; u . too t If PARTS RESISTORS AND CONTROLS Sym Description Part No. Sym HI 130 ohms, 4 watts. ,.61B 20-34 CRl K2 1 megohm, Loudness control left channel in 2E1 and Ml 2E1A chassis. .75D 1-127 R3 1 mego

3、hm, Loudness control right channel in 2E1 chassis M2 (incl. Si). right channel in 2E1A .75D 1-128 M3 chassis. . 75D 1-127 R4 47 ohms, 2 watts.,. .60B 21-470 R5 33.000 ohms, V2 watt. .60B 8-333 K6 82 ohms, 1 watt. 60B 14-820 R7 33,000 ohms. V2 watt. .60B 8-333 M4 R8 100 ohms, 1 watt. .60B 14-101 R9 2

4、,200 ohms, watt. 60B 8-222 CAPACITORS Cl .047 mf, 400 volts. .64B 8-28 C2A 60 mf, 150 volts* M5 C2B C2C 40 mf, 150 volt* T 20 mf. 150 volts felectrolytlc .67B 42-1 C2D 20 mf. 150 volts/ M6 TRANSFORMERS M7 T1 Transformer, Output. .79D 88-1 1*2 Transformer. Output. .79D 88-1 C2A C201 60NF 40MF | IS0V

5、IS0T | MISCELLANEOUS PARTS Description Part No. Rectifier, Silicon Diode (200 ma).93B 16-1 Phono, 3 Speed, Motor and Turntable Assembly (less Tone Arm).400D 710-1 AC Line Cord and Plug.89B 1-1 Cartridge, Dual Needle Type (includes needles).409C 37-1 Needle Assembly for above cartridge sapphire, .7 m

6、il needle.98C 95-4 sapphire, 3 mil needle.98C 95-5 Tone Arm Assembly, complete with cartridge and needles models 925 and 929. 400C 707-1 iur,rw4Ai qqa See Service Manual Mode1938 No. S800 Rev. 1 Tone Arm Rest aii models except model 938.401A 468 Loc-plug. AC Line (does not Include connector pins).33

7、B 287-2 pin for above plug.9B 35-12 Loc-socket, AC Line (does not Include connector pins).33B 287-1 pin for above socket.,9B 35-12 Speaker 4 PM, all models except model 938.78C 160-1 5 PM, model 938.78C 161-1 Ml PHONO . SINCLE PLAT TTPE CREEK M4 TONE ANN assembly O M6 |ci,.04TNF SI ON-OFF ! (PAST OF

8、 S3) nr volts , so tiffs SO CYCLES, AC ONLY M8 Speaker 4 PM, all models except model 938.78C 160-1 5 PM, model 938.78C 161-1 M9 Socket, right channel speaker connector.88B 11-3 M10 12 foot length. Twin Speaker Cable and Plug.89B 92-2 CABINET PARTS Cabinet model 925 (Coral and Silver).35E 550-1 model

9、 929 (Blue and White).35E 550-2 model 938 (Blue and Aqua).35E 551-1 ADMIRAL Chassis 1F1 used in Models 329 and Y949 mr-t ci ir.oi 25L6GT uc amplifier pw E5 3 CHASSIS, H(- 5R? CftOUNC , , DT CJ 5001 /TV 11 660 r-. 11 NNF RiS Wc -1 ISOS M2 1 REJ-ON-OFF_ | |T VOLTS .- J5 ggg 8NLT 4- MMM CONNON CROUN0 |

10、C40 JC4C 3o *160 150V 150V j RUN CHANGES (Jd) Stan at proa, tst R3 wot tOOJi. Chang,d to ftmit ?5L6G T ptatt ear,oat. NOTES. au resistor values in onns anr capacitors VALUES IR MICROFARADS URLESS OTHERWISE SHOWN. ALL VOLTAGES TAREN WITN A VACUUN TUBE VOLTMETER. CHASSIS AND CHANGER REMOVAL The amplif

11、ier tube maybe reached for servicing by removing three screws that secure the metal grille to the top.front edge of changer compartment and lifting the grille up, out of the way. Tube socket voltage s may be measured by using an octal cheater socket. If further servicing is necessary, remove the six Phillips screws that hold the motor board. Remove the control knobs and the 3/8 hex nuts that hold the controls to the cabinet. Lift the changer up and turn the chassis over for servicing circuit components. 16 收音机爱 好者资料库 RadioFans.CN