Radio Shack TRS-80 Service Manual page 121

SYMBOL
L1
L2
L3
3A
4A
28
38
48
58
2C
3C
4C
5C
3D
4D
5D
1E
2E
3E
4E
5E
1F
2F
4F
R1
R2
R3
R4
R5
R6
R7
t
R12
R13
R14
R15
R16
R17
DISK CONTROLLER BOARD
PARTS LIST (Cont'd)
DESCRIPTION
INDUCTORS
390µh
390µh
680µh
MANUFACTURER'S
PART NUMBER
841-9003
841-9003
841-9004
INTEGRATED CIRCUITS
MC1733 805-0733
805-0592
801-0406
802-0020
802-0020
805-3011
805-0463
NE592A
7406, Buffer and Interface gate
74LS20, Positive NANO gate
74LS20, Positive NANO gate
MSM311 EL Precision Comparator
75463, Dual Peripheral Positive OR
Driver
74123, Retriggerable
Monostable Multivibrator
74LS74, Flip-Flop
74LS74, Flip-Flop
74LS04, Positive NANO gate
75462, Dual Peripheral Positive
NANO Driver
74LS86, Quadruple 2-input
Exclusive OR gate
*DIP Shunt, 16-pin
74LS14, Schmitt-Trigger Positive
NANO gate
7407, Buffer and Interface gate
75462, Dual Peripheral Positive
NANO Driver
74LS221, Dual Monostable Multi-
vibrator w/ Schmitt-Trigger inputs
7438, Buffer and Interface Gate
8-Resistor Network
7438, Buffer and Interface Gate
8.2K,¼W, 5%
8.2K, ¼W, 5%
8.2K, ¼W, 5%
27K, ¼W, 5%
27K, ¼W, 5%
3.6K, ¼W,5%
1K,¼W,5%
t
1K,¼W,5%
1.2K, ¼W, 5%
150 ohms, ¼W, 5%
Not Used
1K,¼W,5%
1K, ¼W,5%
RESISTORS
800-0123
802-0074
802-0074
802-0004
805-0462
802-0086
848-9001
802-0014
801-0407
805-0462
802-0221
8000038'
829-0007
8000038
820-7282
820-7282
820-7282
820-7327
820-7327
820-7236
820-7210
t
820-7210
820-7212
820-7115
820-7210
820-7210
RADIO SHACK
PART NUMBER
ACA8058
ACA8058
ACA8057
AMX4326
AMX368S·
AMX3675
AMX3555
AMX3555
AMX4327
AMX4329
AMX3955
AMX3558
AMX3558
AMX3552
AMX4321
AMX3701
AL0907
AMX3716
AMX3684
AMX4321
AMX3810
AMX-3683
ARX0181
AMX-3683
AN0271 EEC
AN0271 EEC
AN0271 EEC
AN0316EEC
AN0316EEC
AN0235BEC
AN0196EEC
i
AN0196EEC
AN0199EEC
AN0142EEC
AN0196EEC
AN0196EEC
113