1-1
SECTION 1
EQUIPMENT REQUIRED/POWER REQUIREMENTS
1.1 Equipment Required
1.2 Power Requirements
1.3 Regulatory Notices
1.1
Equipment Required
The following equipment is required for installation:
a. Triggered sweep oscilloscope and probes with 20 MHz or greater bandwidth.
b. Voltmeter for measuring Exciter Lamp Power Supply (11 Vdc)
c. Cat. No. 69T Dolby Tone Test film
d. Cat. No. 1010 Sync Test film (supplied)
e. Cat. No. 1011 Channel ID Test film (supplied)
f. Cat. No. 1012 Dolby Level Test film
g. 2mm Allen Wrench for Focus Adjustment (supplied)
h. 3mm Allen Wrench for Digital Soundhead Flywheel Installation (supplied)
i. 9/16" (15mm) Open end Wrench
j. No. 2 Phillips Screwdriver
k. Tools for removing existing Top Reel Arm from Projector
1.2
Power Requirements
DA20
The Dolby Model DA20 may be operated from any nominal 120Vac or 240Vac power
source. Voltage selection is automatic within the DA20. The switching power supply
used in the DA20 may be used with mains voltages in the range 85-265 Vac, 50-60 Hz
without adjustment for input voltage.
FUSE—T 2 Amp 5mm x 20mm Time Lag
The fuse may be inspected or replaced by removing the power cord from the unit and opening the
hinged cover of the power entry module. The fuse holder can then be removed.
Cat. No. 700 Digital Soundhead Exciter Lamp Power Supply
The Cat. No. 700 Digital Soundhead contains an internal exciter lamp power supply and
is intended for operation at nominal 120Vac or 240 Vac input and nominal 10Vdc output.
The switching power supply used in the Cat. No. 700 may be used with mains voltages in
the range 85-265 Vac, 50-60 Hz without adjustment for input voltage.
FUSE—T 2 Amp 5mm x 20mm Time Lag
The fuse may be inspected or replaced by removing the power cord from the unit and opening the
hinged cover of the power entry module. The fuse holder can then be removed.
