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Zenith FT11 Service Manual

1961 high fidelity & stereophonic models

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ERVICE MANUAL
1961
HIGH FIDELITY &
TEREOPHONIC MODEL
ZENITH
RADIO
CORPORATION
6001
DICKEN
AVENUE
CHICAGO
39,
ILLINOI
HF 7
PRICE 60 CENT

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Summary of Contents for Zenith FT11

  • Page 1 ERVICE MANUAL 1961 HIGH FIDELITY & TEREOPHONIC MODEL ZENITH RADIO CORPORATION 6001 DICKEN AVENUE CHICAGO ILLINOI HF 7 PRICE 60 CENT...
  • Page 3 CHEMATIC MANUAL PAGE MANUAL PAGE MANUAL PAGE MANUAL PAGE MODEL HF5 - 57, 58 HF5 - 36 HF5 - 35 FT11 HF7 - 32 HF7 - 15 HF7 - 15 GV20 HF7 - 32 HF7 - 16 HF7 -16 GV21...
  • Page 4 5G29 Phono only 10W. (lift lid) 1.47 49-850 2-12 49-852 SFF2604M1 IDENTI CAL TO SFF2E >O4MT1 EXCEPT r INCLUDES FT11 DR0P4N ; rUNER SFF2604R1 IDENTICAL TO SFF2504RT1 EXCEPT INCLUDES FT11 DROP-IN TUNER - - --- — ....______ 1...
  • Page 5 Metal Plate — None None ZENITH-Crest Hot Stamped Sapphire 142-95 Shelf Manual on cabinet Sapphire Player None None ZENITH Dual Speakers Hot Stamped Sapphire 142-87 Shelf Manual Crest on cabinet Sapphire Player None None ZENITH Stereophonic Hot Stamped Sapphire 142-113...
  • Page 6 IDET ITICAL TO SFF ? 2515WT1 EXCI pt includes fi ’ ll DROP-IP 4 TUNER ♦SFF2615R1 IDENTICAL TO SFF2515RT1 EXCEPT INCLUDES FT11 DROP-IN TUNER SFF2615E1 IDEPS [TICAL TO SFF r 2515ETl EXCE PT INCLUDES FT11 DROP-IN TUNER SFF2535R1 Console Wood Wood Mahogany...
  • Page 7 TYPE OF INDICATOR CONTROL OUND BERATOR IDENTIFICATION LIGHT PANEL PEAKER TYLU CARTRIDGE MOUNTING TYPE Provisions DR60 ZENITH Stereophonic Metal Plate Diamond 142-110 FR101, FR102 Shelf For GV20 169-145 High Fidelity — Crest Sapphire FR103 or GV21 DR60 Provisions ZENITH Stereophonic...
  • Page 8 (WT. OZ.) T.V. RADIO-PHONO COMBINATION (Continued) G2786W Console Wood Grained Walnut 16G23 TV-Phono 8.5W. 2-3% (lift lids) 49-782 4G21 AM-FM 2-10 49-914 FT11 (7F20) G2786R Console Wood Grained Mahogany 16G23 TV-Phono 8.5W. 2-3% (lift lids) 49-782 4G21 AM-FM 2-10 49-914 FT11...
  • Page 9 Phono- Fidelity — Crest SPACE COMMAND “ 1000 ” Reverberation — — — — — None — — — — — ZENITH Radial Sound — — — — — ZENITH Radial Sound — — — — — — None —...
  • Page 10 GENERAL produce right and left information, The output from tereo ystem Models FF2515T-1, FF2615-1, the right element goes to the right channel and the FF2560-1, FF2570-1, FF2575-1, FF2585-1 output from the left element goes to the left channel, The individual outputs of these amplifiers feed The above models function identically to their to their respective speaker systems without mat- previous counterparts in the SFF line, in fact,...
  • Page 11 to the grid of the V4B amplifier, The information and then supplies this combined information to at this grid is R-(R+L)D, In V4B the signal is each stereo amplifier channel, In the following inverted in phase and the output from the plate explanation!, refer to the GV-20 block diagram and which now becomes -R + (R+L)D is fed back to schematic, When the shorting plug is removed from...
  • Page 12 FM IF channel. The instruc ­ It is most important that coded speaker leads be tion book for the Zenith Model 800 Signal Genera ­ connected to coded terminals on speakers for proper tor (Form Z8001) covers complete FM alignment pro ­...
  • Page 13 The signal generator output should be kept just FM Discriminator Alignment high enough to get an indication on the meter, (a) Vacuum Tube Voltmeter Lug 7 on discriminator When the secondary of the discriminator is aligned transformer to chassis (half discriminator load), use sufficient signal input to get a good positive and negative indication before setting the slug for (b) Vacuum Tube Voltmeter Lug 5 on discriminator...
  • Page 15 4G23 CHEMATIC FOR GV20 4G23 TUBE LAYOUT FOR GV20...
  • Page 16 4G24 CHEMATIC FOR GV21 4G24 TUBE LAYOUT FOR GV21...
  • Page 17 CHEMATIC 80 TUBE & CONTROL LAYOUT...
  • Page 18 4G21 CHEMATIC FOR MODEL FF2503T-1, FF26O3-1, G2780, G2786 & G2787...
  • Page 19 4G21 & 5G29 TUBE LAYOUT FOR MODEL FF2503T-1, FF2603-1, G2780, G2786, G2787, G3388 AND FF2504T-1, FF2604-1, FF2505T-1, FF2605-1, FF2607-1...
  • Page 20 5G29 CHEMATIC FOR MODEL FF2504T-1, FF2604-1, FF2505T-1, FF2605-1, FF2607-1 AND G3388...
  • Page 21 4G30 TUBE LAYOUT FOR MODEL FF2515T-1 & FF2615-1 7G30, 7G31 TUBE LAYOUT FOR MODEL FF2515T-1, FF2615-1, FF2570-1, FF2575-1 & FF2585-1...
  • Page 22 4G30 CHEMATIC FOR MODEL FF2515T-1 & FF2615-1...
  • Page 23 7G30 CHEMATIC FOR MODEL FF2515T-1 & FF2615-1...
  • Page 24 3G32 CHEMATIC FOR MODEL FF2535-1...
  • Page 25 9G26 CHEMATIC FOR MODEL FF2535-1...
  • Page 26 3G32 - 9G26 TUBE LAYOUT FOR MODEL FF2535-1...
  • Page 27 •o »d Z" 'o' v — z CM r-4 £ Alignment Chart For Chassis HG25 & 9G26...
  • Page 28 11G25 TUBE LAYOUT FOR MODEL FF2570-1, FF2575-1 & FF2585-1...
  • Page 29 7G31 CHEMATIC FOR MODEL FF2570-1, FF2575-1 & FF2585-1...
  • Page 30 11G25 CHEMATIC FOR MODEL FF2570-1, FF2575-1 & FF2585-1...
  • Page 31 UMERICAL PARTS LIST GP 80 CHA PART PART PART DESCRIPTION PRICE DESCRIPTION PRICE 22-1842 Capacitor .01 Mfd. 600V (2 used) WC 14244 Electrolytic 30/350V, 15/3<D0V,.25/25V 3.50 22-2128 Capacitor .001 Mfd. 600V Resistor 330 Ohm 1/2 W In.s. 20% 22-2634 Capacitor .047 Mfd. 400V Resistor 82 K Ohm 1/2 W Izns.
  • Page 32 PART PART DESCRIPTION PRICE PRICE DESCRIPTION Rubber Washer (used on 62-23) 93-1179 Shaft Friction Spring 86-1249 Power Transformer 95-1837 Sleeve Friction Spring 80-1250 Audio Output Transformer (2 required) 95-1859 5 Lug Terminal Strip (2 r^guir.ed) 83-2145 10 - 16 X 3/8 x 5/16 Hex. Washer Hd. 114-699 7 Lug Terminal Strip 83-2216...
  • Page 33 4630 PART PART >ART DESCRIPTION PRICE DESCRIPTION PRICE 39 k bhm 1/2 W Ins. 10% ‘ 1 d 12-2999 Stereo Switch Mtg. Brkt. 63-1852 , 47 Shield Retaining Clip (3 required) 19-284 63-1855 47 K.Ohm t l/2 W Ins. 10% 22-3 .01 Mfd.
  • Page 34 PART PART PRICE DESCRIPTION ] PRICE DESCRIPTION 95-1650 Audio Output Transformer (2 required) 4.75 83-2639 3 Lug Terminal Strip 83-2649 2 Lug Terminal Strip 95-1837 Power Transformer 16.00 6 Lug Terminal Strip 114-699 10-16 x 3/8 x 5/16 Hex. Washer Hd. 83-2673 83-2965 7 Lug Terminal Strip...
  • Page 35 PART PART DESCRIPTION PRICE DESCRIPTION ..- si PRICE 83-1475 Insulating Strip ■J F 83-2145 5 Lug Terminal Strip 95-1692 Output Transformer , b j 51 61O.O 83-2216 7 Lug Terminal Strip (6 required) 95-1834 Power Transformer f , ( j 83-2898 3 Lug Terminal Strip (2 required) 114-78...
  • Page 36 PART PART DESCRIPTION PRICE DESCRIPTION PRICE ,83-2965 7 Lug Terminal Strip Bearing Strip Rubber Grommet (1 used on Ea. S-15691 & 83-3075 125-73 83-3239 8 Lug Terminal Strip 15743) Antenna Terminal Strip (FM) 126-622 Tube Shield 83-3647 Bandswitch Tube Shield 85-691 126-797 Stereo-Monaural Switch...
  • Page 37 PART PART DESCRIPTION PRICE DESCRIPTION PRICE 63-1757 220 Ohm 1/2 W Ins. 10% 83-2641 5 Lug Terminal Strip 63-1758 220 Ohm 1/2 W Ins. 20% (3 required) 83-2712 Terminal Strip (Loop Anten. na) 63-1772 470 Ohm 1/2 W Ins. 20% 83-2915 4 Lug Terminal Strip 63-1779...
  • Page 38 5 1/4 ” PM Speaker (2 used} 8.00 WC14263- 57-1721 Emblem Plate Handle Assembly 1.25 57-3259 Name Plate (Zenith Stereophonic) WC14459-9 Vent Plate 142-115 Stereo Cartridge & Needles WC14883 ' Hinge Assembly 169-141 Record Changer (See Parts List for Components...
  • Page 39 FF2501-1 CABINET PART PART PART DESCRIPTION PRICE DESCRIPTION PRICE 72-139 8 x 3/8 Phils. Flat Hd. Wood Screw Stereo Balance Control Mtg. Bracket 12-3042 (4 required) 14-3327 Console Cabinet - Model SFF2501 WT1 78-1036 5 Contact Socket (2 Pt. of S — 47257) 14-3328 Console Cabinet - Model SFF2501 RT1 83-765...
  • Page 40 |FF2503T-1 PART PART PART DESCRIPTION DESCRIPTION PRICE PRICE Console Cabinet - Mocjql §FFg§08 WT1 14=0636 Console Cabinet - Modgj §FF2§03 ET1 14=8637 114-386 Chassis Mtg. Screw (4 required) Packing Carton 10-1838 Dual Pickup Cartridge (Diamond-Sapphire) Lid Support Hinge (Pt. gf 14=0637) 2.50 142-117 40-286...
  • Page 41 PART PART DESCRIPTION PRICE DESCRIPTION PRICE 54-385 6-32 x 5/16 Hex Nut'(l Mts. Ea. S-26657 St 2 Mt. Ea. 49-842) 159-117 Plug Button (SFF2603 El) 83-3474 Line Cord Capacitor Strip 169-144 4 Speed Record Changer 86-255 Spade Terminal (Pt. of S-50395) 202-697 FM Instruction Book 113-66...
  • Page 42 PART PART DESCRIPTION PRICE DESCRIPTION PRICE 4 Speed Record Changer (see changer parts 169-145 Name Plate Background (Pt. of 169-145) 57-3005 list for components) Name Plate Overlay (Pt. of 169-145) 57-3007 FM Instruction Book 202-697 Line Cord Capacitor Strip 83-3474 Instruction Book 202-1751 Protective Strip...
  • Page 43 FF2535-1 CABINET PART Kn-Xt 1 PART DESCRIPTION PRICE DESCRIPTION PRICE 2-954 Cabinet Back 4.50 93-1358 Felt Washer 12-2608 Indicator Light Mtg. Bracket 93-1360 Felt Washer 14-3387 Record Storage Well 100-67 Indicator Light Bulb 14-3576 Console Cabinet - Model SFF2535R1 112-1226 Record Changer Mtg ’...
  • Page 44 PART PART 1 DESCRIPTION PRICE DESCRIPTION PRICE 6-18 x 1/2 x 1/4 Hex. Hd. Self-tap 114-669 8 x 1/2 Phils. Flat Hd. Wood Screw (3 72-140 Screw (1 used on 12-2608 & 2 on Ea. used on 14-3387) Cabinet, 9F24, S-47257 & 83-1884) 5 Contact Socket 78-1036 Chassis Mtg.
  • Page 45 PART PART DESCRIPTION PRICE DESCRIPTION PRICE 93-1360 Felt Washer 202-1746 Instruction Book 100-67 Indicator Light Bulb S-17325 Low Impedance Loop (Pt. of S-17917) 112-1226 Record Changer Mtg. Screw (2 required) S-17917 Low Impedance Loop , Clip & Strip 112-1266 6-32 x 1 1/2 Speaker Mtg. Screw (12 Pt. Assembly of Cabinet) S-18560...
  • Page 46 NOTE...
  • Page 47 NOTE...
  • Page 48 ZENITH RADIO CORPORATION 6001 DICKEN AVENUE CHICAGO 39, ILL HF7-R.R. Printed in U. .A. 3/31/611...

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