Table of Contents
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VI
Table of Contents
Model 285B
Section
VI
I
Figure
1-1.
2-1.
2-
2.
2-3.
3-1.
4-1.
6-1.
6-
2.
6-3.
i
v
CONTE
NTS (Continued)
Page
ELECTRONICS MAINTENANCE . .
6-1
6.1
Preventive
Maintenance
6-1
6.
3
Checkout and
Alignment
Procedures
6-1
6.5
Test Equipment
Required
6-1
6.7
Preliminary
Procedures
. .
6-2
6.9
Power Supply .
6-2
6.11
Logic
Functions
6-2
6.13
Playback Head Azimuth
6-4
6.15
Level and Equalization
6-5
6.17
Signal-to-Noise,
LINE OUTPUT
6-5
6.19
Noise
Level
,
SPEAKER OUTPUT
6-5
6.21
LINE OUTPUT
Di
stortion . .
6-7
6.23
SP
EAKER
OUTPUT
Distortion
. . .
6-7
6
.
25
Flutter
6-7
SCHEMATICS,
PARTS
LISTS AND RELATED DATA
7-1
ILLUSTRATIONS
Page
Scully Model 285B Tape Reproducer Installed In
Accessory
Console
1-0
Mounting Dimensions . .
2-1
285B Interconnection Diagram
2-3
Rear
View
of 285B Showing Location of Connectors
2-5
Controls and Indicators .
3-1
285B Reproduce
System Block Diagram .
4-2
Initial Test Setup
. . .
6-3
Power Supply
Voltage
Adjustment . .
6-4
Equalization and Level Adjustment Points
6-6
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