Bell & Howell - Projector - Filmosound 641 - 642 ... - Cine Information

Circuit
Ref. Description
R1 Resistor 220
R2 " 27
R 3 " 220
R4 " 2.2
R 5 M 470
Kb " 1.5
R 7 " 100
R8 " 10
R9 " 1
RIO " 470
R 1 1 " 1.5
R12 M 100
R13 " 680
R14 " 680
R15 " 390
R16 " 2.2
R17 " 100
R18 M 10
R19 " 330
R20 " 33
R21 " 10
R 22 " 1
R23 " 68
RtI4 " 100
R25 " 33
" 2.2
H21 " 100
He'8 " 220
R 29
R 30
R 31
R 32
R 33
R 34
R 3 5
R 36
R 3 7
K38
R 39
R40
R4 1
R42
"
"
"
"
"
"
"
"
"
"
"
"
"
47
2.2
47
1
10
470
470
360
360
2.2
6.8
1
1
M R43
R44
R45
R46
"
"
"
"
100
4.7
220
22
10
VR1 Potentiometer 250
VR2 Potentiometer 250
Figure 23
642 AMPLIFIER ASSEMBLY
Circuit
Part No. Ref.
K ohm + 10% 58481 VR3
K ohm 10% 58386 VR4
K ohm 5% 58750 VR5
M ohm 20% 56417 CI
K ohm 5% 58752 C2
K ohm 20% 56492 C3
K ohm 5% 58753 C4
K ohm 20% 58483 C5
M ohm 20% 56380 C6
K ohm 5% 58752 C7
K ohm 20% 56492 C8
K ohm 5% 58753 C9
K ohm 20% 58759 C10
K ohm 20% 58759 Cll
K ohm 10% 58760 C12
K ohm 20% 56378 C13
K ohm 20% 56386 C14
K ohm 20% 58483 C15
K ohm 10% 58755 C16
K ohm 10% 58756 C17
K ohm 20% 58483 C20
M ohm 10% 56391 C21
K ohm 10% 58757 C22
K ohm 10% 56397 C23
K ohm 10% 58756 C24
K ohm 20% 56378 C25
ohm 10% 58387 C26
K ohm 20% 56379 C27
K ohm 20% 56337 C28
K ohm 20% 56378 C29
K ohm 20% 56337 D1
M ohm 20% 56380 VI
K ohm 20% 58754 V2
K ohm 20% 59284 V3
K ohm 20% 59284 V4
ohm 5% 58763 V5
ohm 5% 58763 V6
K ohm 10% 56431 V7
K ohm 10% 58761 V8
K ohm 10% 58758 T1
K ohm 58764 T2
ohm + 20%
K ohm
58762 SI
M 10% 58939 J1
K ohm " 20%
K ohm ii 10%
56379
57402
J2
J3
K ohm 10% 59285
K ohm 58765
K ohm 58765