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Wurlitzer 112, Service Manual

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Wurlitzer 112 Service Manual Download Page 10

I 

0). 

�� 

, --· 

2. 

3. 

4. 

5. 

6. 

7. 

8. 

9. 

Front  Rail  Pin 

10. 

Key 

11. 

Music  Desk  Assembly 

12. 

Balance  Key  Pin 

13. 

Key  Cloth 

14. 

Capstan  Screw 

15. 

Whip 

16. 

Whip  Flange 

17. 

Fly  ( or  jack) 

18. 

NOMENCLATURE 

Main  Rail 

Butt 

Regulating  Screw 

Butt  Spring 

Butt  Flange 

Reed  Bar 

Hammer 

Reed 

Pick-Up  Insulator 

BALANCE 

JeAIL 

19. 

2). 

21. 

22. 

23. 

24. 

25. 

as. 

27. 

Pick-Up  Washer 

28.

Damper  Lever

Pick-Up  Screw 

29.

Damper  Lever  Flan�e

Pick-Up  Bushing 

30.

Damper  Lever  Spring

Reed  Washer 

31.

Damper  Washer

Damper  Rod 

32.

Damper  Let-Off  Button

Shield 

33.

Main  Rail  Stiffener

Pick-Up 

34.

Damper  Lever  Wire

Damper 

35.

Amplifier

Reed  Screw 

36.

Speaker

3 

WUELlTZEE:  ELECTeONIC  PIANO  MODEL  I f2.. 

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Fig.  6 

scanned by tropical fish  

tropicalfishvintage.com

scanned by tropical fish 

 

 

tropicalfishvintage.com

Summary of Contents for 112

Page 1: ...MODEL 112 WURLI TZER ELECTRONIC PIANO SERVICE MANUAL ...

Page 2: ...l piano And in many ways it is quite dif ferent It should be stated at this point that the Wurlitzer Electronic Piano is a piano with a purpose Not only has it been designed to be sold on its own merits in scores of spe cialized markets where conventional pianos would not be appro priate but it can and will become an important factor in increasing the sale of standard 88 note pianos through lesson...

Page 3: ...ipment occasionally occurs and the instrument should be thoroughly checked be fore it is placed in use 1 Unpack carefully examine for in transit damage For handling of damage claims see Wurlitzer Piano Service Manual 2 Check amplification system 3 Check key and action regulation 4 Dust and clean instrument thoroughly set up and test auxiliary equipment 2 scanned by tropical fish tropicalfishvintag...

Page 4: ...O MODEL 112 Width 39 Depth 22 1 4 Height 8 1 4 110 Volts AC 60 Cycle AC Wattage Consumption 60 SPECIFICATIONS FOR BENCH FOR WURLITZER ELECTRONIC PIANO MODEL 112 Height Width Length 19 1 4 13n 22 3 scanned by tropical fish tropicalfishvintage com ...

Page 5: ... Fig 1 Fig 2 4 scanned by tropical fish tropicalfishvintage com ...

Page 6: ...esk as shown in Fig 1 4 Lift top completely off piano as shown in Fig 2 5 Inspect the amplifier to see if all tubes are mount ed securely in their sockets These tubes are not special tubes and can be obtained easily in your own locality Location of tubes shown in Figs 3 and 10 and on Schematic Diagram Fig 9 Fig 3 5 scanned by tropical fish tropicalfishvintage com ...

Page 7: ... 9 SWITCH The line switch is on the piano volume control and its off position is clearly indicated on the unit and also in Fig 4 As the piano volume contrbl is rotated clockwise the switch will click and the pilot light on the front of the piano will glow See Fig 2 10 VOLUME CONTROL By rotating the piano volume control clockwise the volume of the instrument can be regulated NOTE The piano volume c...

Page 8: ... 9 SWITCH The line switch is on the piano volume control and its off position is clearly indicated on the unit and also in Fig 4 As the piano volume contrbl is rotated clockwise the switch will click and the pilot light on the front of the piano will glow See Fig 2 10 VOLUME CONTROL By rotating the piano volume control clockwise the volume of the instrument can be regulated NOTE The piano volume c...

Page 9: ...hat the reeds vibrate through the opening when struck by the hammer These tone pick ups are the fixed plates of a condenser in the capacity change system The reeds should be adjusted so that the free swinging reed clears the pick ups but NEVER contact them The pick ups have a polarizing voltage of 140V through a 470 000 ohm resistor and are not a shock hazard As the reeds swing away down from the ...

Page 10: ...nsulator BALANCE JeAIL 19 2 21 22 23 24 25 as 27 Pick Up Washer 28 Damper Lever Pick Up Screw 29 Damper Lever Flan e Pick Up Bushing 30 Damper Lever Spring Reed Washer 31 Damper Washer Damper Rod 32 Damper Let Off Button Shield 33 Main Rail Stiffener Pick Up 34 Damper Lever Wire Damper 35 Amplifier Reed Screw 36 Speaker 3 WUELlTZEE ELECTeONIC PIANO MODEL I f2 u s ANO FOeel N PATEl J TS PEtJOI fJ j...

Page 11: ...31 heed Washer 3 2 Damper Lever 33 Damper Lever Lift Wire 34 Damper Lever Lift Dowel 35 Damper Lever Flange J6 Damper Rod 37 Damper Rod Brackets 38 Damper Screws 39 I I 1 t I r JiJJi 1 I I l ll l rfj r __1I _______j___ LJ BAL CEi I e L r µ_ Q J e I 5 Damper Lever Flange Spring Action Rail Butt Screws Butt Flange Fly Regulating Leather Butt Regulating Screw Fly Amplifier Speaker Threaded Damper Rod...

Page 12: ... Refer to Wurlitzer Piano Service Manual Page 4 CAPSTAN ADJUSTMENT This is covered urrler the following section devoted to Touch TOUCH Determine if the key depth is sat isfactory to the present setting of the key height These heights are Natural 3 8 measured at face of key Sharp 5 16 measured over pin If the key depth is not right check the section under Level Keys first page 11 BE SURE THE KEY HE...

Page 13: ...away from the striking point with at least 1 32 of after touch and a hammer blow distance of 1 1 8 The striking point would be 15 16 above the keybedo The butt spoon Item 9 Diagram A has been factory set and should not require adjustment The spoon is bent out just far enough so the capstan screw Item 6 j Diagram A will escape to the fly leather Item 7 j Diagram A THE PROPER SETTING OF THE BUTT SPO...

Page 14: ...let off and will cause blocking of the reed If the hammer lets off too far from the reed check the setting of the capstan screw for lost motion Also check the key depth If the hammer let off is still too far from the reed the key depth should be increased as required If the hammer lets off too close to the reed it will cause blocking For correction first check the capstan setting and key depth If ...

Page 15: ... DAMPER ADJUSTMENT Adjust the damper button No 32 Fig 6 so that when the hammer No 16 Fig 6 has traveled half the distance to the reed No 17 Fig 6 the damper No 26 Fig 6 will start to lift off the reed Adjustment is made by turning the damper button down to lift off fast and to lift off slower Be sure the damper lifts high enough on the bass section to clear the reed while it is in full swing Also...

Page 16: ...be tuned by adding lead to the end of the reed A dding weight to the end of the reed is the better method and should be used if possible Filing unless expertly done can ruin the reed by weakening it and removing the protective coating which keeps it from rusting Should it be necessary to remove or repair a reed first remove the shield No 24 Fig 6 by removing two screws The reed can then be taken o...

Page 17: ...to 8 OHMS may be plug ged into the jack marked speaker Both the speaker in the unit and the external speaker will play when the external speaker is plugged into the speaker jack EXTERNAL AMPLIFICATION The amplifier in the Wurlitzer Electronic Piano may be used as a pre amplifier to drive a higher powered amplifier by plugging into the jack marked auxiliary output This provides a high impedance out...

Page 18: ...5 7 11 WICE JOUl JO C1 4 2 2 K 2 CA e 80 J Z 17 1000 7 v tCE WOUNO e1s 2 50 IC 3 eeo 470K vz CAeeo J CZI 100 C22 Z a t ez 470 K OHM S 1 2 w CAe aot J 6 Gr 2 tw c a o e2c 47K 01 fM 1 2 W C AieBO I lc 27 470K e 2 e o CZ i I 4 7 M e o 4 7oK Cl CZ C S c C 5 C ce C 3 Cl4 CAPAC1TOe 1 01 aC CECAMIC 01 SOOV M v OZ 500V 00 5 SOOY OOO S00 500V M V oz SOOV 02 SOOV 00 2 __1 00V 01 500V 01 SOOV CAPACl TOte oey...

Page 19: ... STY AIN eE UEF _ _ T Jl E SOC KE T IJO AL IEP 3t 7q OUTPUT TeANSF OCM IEfL 5PEAKEC SOCKET IE MET SI6 IEP 374 a COMMET l B ICo IEFL 77a CHAS SI S IEP zed CJ fAS61S SCT T0M l b Ele N SFOeMEe IEP 4b ELE LYTIC 4 KCTIQJ FUSE HOL DE_e s INPUT coe o A C TEl MINAL S AMP Sae IAL Jo PL ATE S SHT ME TAL 5c ee STeAIN E ELIE F 5e 5K eESIS lbC ezs l11 mI 0 1 111 D nnn 3 II 6 33 Fig 10 Q I 11 1 IO 0 1 1 I wWI F...

Page 20: ... a full and complete explana tion has been noted on the shipping papers CONCLUSION The story of the development of the Wurlitzer Electronic Piano is a fascinating one We urge you to read it in the Wurlitzer Electronic Piano Merchandising Program The Wurlitzer Electronic Piano and the comprehensive merchandis ing and promotion programs presented with it are available to authorized Wurlitzer Piano d...

Page 21: ...al Speaker 13 F Finish Care of o l2 Fuse e 6 H Hammer Let Off See Touch 9 Hammers Blocking e 11 I ndex 17 Introduction l 17 J Page No Jacks 13 K eys Cleaning 12 Keys Damaged 11 Keys Easing 9 Keys Leveling 11 Keys Spacing 11 N lotes 18 p Preparation of the Wurlitzer Electronic Piano For Sale 2 Pick Up 7 Pilot Light 4 R Range 7 Record Player 13 Reeds 12 s chematic Diagram of Amplifier 14 Service Dep...

Page 22: ... order to assist in the restoration of vintage Wurlitzer electronic pianos For your convenience the full text of this document is searchable Find high res versions of just the schematics as well as additional service manuals at tropicalfishvintage com schematics Questions comments info tropicalfishvintage com ...

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