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PREAMPLIFIER CIRCUIT DIAGRAM
REPLACEMENT PARTS LIST
Reference
Designation
A l
A2
C102, 107, 108, 110
C103
C106
D101, 102, 103, 105, 106
D104
D107
L1, L2
MP2
MP3
P1
P2
Q101, 105
Q102, 103, 104
S101, 102
T1
W1
FIGURE 6
Part
Number
Description
90A8216
Printed Circuit Board Assembly
Microphone Cartridge-Housing
R134
Capacitor, Electrolytic, 1 µF, 50 Wvdc
86S628R
Capacitor, Electrolytic, 33 µF, 16 Wvdc
86AE629
Capacitor, Electrolytic, 15 µF, 63 Wvdc
86W628R
Diode, Computer, 75V, 0.4A
86A415R
86A8405
LED, Green
86C429
Diode, Current Regulator, 1.3 mA
80A253
Ferrite Bead Ring
RK245
Swivel Adapter
49A66
Windscreen
95A8077
Connector, Receptacle, 3-pin Miniature
95A247
Connector, Receptacle, 3-pin
86A350
Transistor, NPN
86A348
Transistor, PNP
55A8031
Slide Switch, SPDT
51A286
Transformer
Cable and Connector Assembly
C107
PREAMPLIFIER PC BOARD
FIGURE 7
Commercial
Alternate
None
None
None
Mallory VTL33S25
None
TI, GE 1N4148
None
Motorola, Teledyne
1N5300
Stackpole 57-0180
None
None
Switchcraft TB3M
Switchcraft D3M
Motorola, National
Semiconductor 2N5210
Motorola, National
Semiconductor 2N5087
None
None
None
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