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Bell System Practices 43, Disassembly/Reassembly

Ensure a hassle-free setup for your home entertainment system with the Barkan 43 Safety & Assembly Instructions manual. Delve into this comprehensive guide, available for free download at 88.208.23.73:8080, to effortlessly assemble and secure your Barkan 43 product while ensuring utmost safety.

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SECTION 574-504-720 

cable  connector 

P201  from logic card  and 
lift out switch assembly. 

RELAY CONNECTOR 

(See 9) 

Loosen  screw  (nut  on later  units) 
and  remove ground  strap  running 
from punch frame  ( 412390  strap). 

Note: 

Steps 11 and 12 need  no be 

performed  to remove Punch and Reader. 

Remove  power  supply  ac 
cable connector  (P-601). 

Remove punch  and reader 

assembly from housing. 
Lift  straight up. 

(!)Remove cable connectors 

from logic  card. 

/

Remove 2  circuit  card 

bracket  screws. 

�----

J-' 

�

Slide logic  card  re

arwar

d  out 

of plastic  guides  and housing. 

9 

Remove  relay  cable connector located 

at  front  of  power  supply  circuit  card. 

Note: 

During  reassembly,  be  certain  that  the  reader  tight  tape  arm  remains  outside  the  opening  in  the 

cover. 

Page 4 

Summary of Contents for 43

Page 1: ...eft and right and up or down and top or bottom etc refer to the paper tape unit in its normal operating position 1 05 Refer to Maintenance Tools Section 570 005 800 for a complete listing of the various types of hand tools available for main tenance of Teletype Corporation equipment For a listing of the tools required to perform the disassembly reassembly procedures refer to 2 TOOLS REQUIRED 1 06 ...

Page 2: ...es TOOLS Hex key wrench 1 16 inch Hex key wrench 050 Hex key wrench 093 Screwdriverjw clip 1 4 inch Assembly wrench 1 4 inch Wrench 3 16 x 1 4 open end Wrench 5 16 x 3 8 open end Wrench 7 16 x 1 2 open end 3 01 To replace fuses or gain access to variable feature switches VARIABLE FEATURE SWl l GH Page 2 Remove screws and plate LOGIC SWITCHES 412349 Remove screws Early Version F2 F3 F4 NEW STYLE 0 ...

Page 3: ...eader Assembly with Motor 3 02 To remove punch and reader with motor Remove main cover wind cover and chad box Remove main and wind cover 1 lRemove chad box Pull to left and up 143o618 securing main cover 2 0675 securing wing cover 1 Page3 ...

Page 4: ...o remove Punch and Reader Remove power supply ac cable connector P 601 Remove punch and reader assembly from housing Lift straight up Remove cable connectors from logic card Remove 2 circuit card bracket screws J Slide logic card rearward out of plastic guides and housing 9 Remove relay cable connector located at front of power supply circuit card Note During reassembly be certain that the reader ...

Page 5: ... 3 02 Steps 5 6 7 11 and 12 Power Supply and Rear Frame Assembly 3 04 To remove the power supply and rear frame assembly _ Remove bustle and guard assembly Perform 3 01 Steps 1 through 4 0Remove covers and chad box Perform 3 02 Steps 1 through 4 Remove punch and reader assembly and logic card Perform 3 02 Steps 5 through 12 I I I t y I J l 0Remove 4 screws and V slide out power supply and rear fra...

Page 6: ...flat washer 156572 and felt washer 95758 from end of connector link 2 Pis and remove connector link TRANSPORT DRIVE ECCENTRIC ASSEMBLY 4 Remove outer retainer ring 119649 and felt washer 169654 in front of pawl Remove inner retainer ring 119649 pawl and pawl spring take care not to lose spring Note When replacing carefully compress spring in hole as pawl is moved onto post in front of spring Steps...

Page 7: ...tric drive and remove assembly Note When replacing align setscrew with countersunk hole in shaft before tightening To remove reader transport assembly sJRemove 0 ring belt 11JDisconnect transport connector The transport can now be removed if necessary Remove retainer ring 119652 and shim 131 Loosen cable clamp screw and free transport coil cable from clamp 4JDisconnect transport connector from cir...

Page 8: ... be taken not to lose shims on transport shaft Note 1 In reassembly the Feed Pawl and Ratchet Wheel Engagement adjustment must be made Note 2 In reassembly connect link to transport assembly while mounting punch to center frame PageS Loosen mounting screw and remove grounding strap Remove mounting screw with cable clamp FRAME BELT O RING 0Disconnect two magnet bank cable connectors Part of 412325 ...

Page 9: ...able Part of 412324 Cable READER ASSEMBLY PUNCH ASSEMBLY Note In reassembly the Feed Pawl and Ratchet Wheel Engagement adjustment must be made ISS 1 SECTION 574 504 720 L 7 0 412250 CONNECTING LINK 31 Remove three mounting screws one with cable clamp and move reader assembly away from cenJeJ frllJl1e _Care should be taken not to lose shiins on transport shaft Page9 9 Pages ...

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