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Model 256/PC Instruction Manual
CPU BOARD ASSEMBLY - 5211066
P/N
2000030
2000032
2100079
2210008
2230003
2230010
3100043
3100044
3200038
3200001
3200002
3200037
3200047
3300047
3300055
3300116
3300135
3300142
3300151
3300185
3300213
3300265
3300267
3300270
3300273
3300282
3300283
3300299
3300304
3300317
4025054
4041025
4041035
4041036
4041037
4041038
4041042
4041043
4041045
4041049
4041059
4041061
4041073
4041102
4500002
PARTS LIST
DESCRIPTION
INDUCTOR, FERRITE
TRANSFORMER
VOLTAGE SWITCH
BUZZER DC 6V
CRYSTAL 4.00 MHZ
CRYSTAL 1.8432 MHZ
FET VN0104N3
FET VP0104N3
DIODE, MBR030
DIODE 1N4150
DIODE 1N4005
ZENER 1N5924A
DIODE ARRAY-MAD1103P
IC, 74C14
IC, 7812C REGULATOR
IC, 7805C REGULATOR
IC, 8279C KEYBOARD CTRL
IC, 1488
IC, 1489
IC, 6809 MICRO
IC, 79M05 REGULATOR
IC, 74HC373
IC, 6551 ACIA
IC, 74HC04
IC, 74HC00
IC, 7912 NEG V-REG.
IC, 74HC138
IC, TC5564PL-15 SRAM
IC, LM311
IC, 27C64 UVPROM
RESISTOR, .50W,5%,6.2
RESISTOR,.25W,5%,100
RESISTOR,.25W,.5%,680
RESISTOR,.25W,5%,820
RESISTOR,.25W,5%,1K
RESISTOR,.25W,5%,1.2K
RESISTOR,.25W,5%,2.7K
RESISTOR,.25W,5%,3.3K
RESISTOR,.25W,5%,4.7K
RESISTOR,.25W,5%,10K
RESISTOR,.25W,5%,68K
RESISTOR,.25W,5%,100K
RESISTOR,.25W,5%,1.0M
RESISTOR,.25W,5%,5.1M
METAL OXIDE VARISTOR
SYMBOL
L1-L9
T1
SW1
L1
X2
X1
Q1
Q2
CR13
CR8,12,14
CR4,5,7,9-11
CR3
DA1
U14
VR1
VR4
U7
U1
U2
U5
VR3
U6
U4
U8
U3
VR2
U9
U12
U10,11
U13
R23
R3
R24
R14
R11
R13
R17
R12
R25
R4-7,16,2
R18,19
R10
R15
R8
VR5,6
Page 51
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