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Model
8901B
Reference
Designator
A1
A2
A4
A5
A6
A7-A9
A1 0
A1
1
A1 2
A13
A1
4
A1 5
A1 6
A1 7
A1 8
A1 9
A20
A21
A22
A23
A24
A25
A26
A27
A28
A29
A30
A31
A32
A33-A49
A50
A51
A52
A53
A54
A55
A56-A69
A71
A72
'
A3
lbble 8A-I. Assembly and Service Sheet Cross Reference Index
Schematic
Number
Block
Assembly Name
Service
Sheet
Diagram
Keyboard and Display
25, 26, 27
5
Audio Filters
12
4
Audio De-emphasis and Output
13
4
FM Demodulator
10,11
3
Voltmeter
14,15
4
AM Demodulator
8, 9
3
Power Supply Regulators
31,32
5
Counter
22,23
5
Controller
24
5
Remote Interface
28
5
RF Input
4
2
Buffer Amplifier (Option Series 030)
5
2
Input Mixer
5
2
IF Amplifier
5
2
LO Divider
17
2
LO Control
20,21
2
Low Frequency VCXO Filter
19
2
Low Frequency VCXO
19
2
Sampler
18
2
High Frequency VCO
18
2
Audio Motherboard
35
Power Supply Motherboard
31,32
5
Digital Motherboard
35
RF Motherboard
35
Series Regulator Heat Sink
31,32
5
Line Power
31
5
Remote Interface Connector
28
5
Power Reference Oscillator
3
2
(Not Assigned)
AM Calibrator
30
3
FM Calibrator
29
3
Audio Counter/Distortion Analyzer
16
4
Power Meter
1,2
2
IF Channel Filter (Option Series 030)
7
3
IF Amplifier/Detector (Option Series 030)
6
3
I F
Channel Filter (Option Series 030)
33
3
IF
Amplifier/Detector (Option Series 030)
34
3
(Not Assigned)
(Not Assigned)
(Not Assigned)
Service
8A-7
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