Introduction - Vivitar 283 Service Manual

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SECTION 1
INTRODUCTION
1.1 SCO PE OF MA NUA L
Automatic Electronic Flash
Model 283
This document is the Service Manual for the Vivitar Electronic Flash Unit Model 283, sold under Vivitar stock
number 0233952 and further identified by Vivitar Top Assembly part number 3900277. This manual provides
information on principles of operation, operational checkout, troubleshooting, disassembly and reassembly, repair,
component replacement, and recommended tools and test equipment. A parts list, exploded view drawings,
schematic diagram, PC board layout and wiring view drawings are also provided.
Please note that illustrations and parts l ists are based on production data at time of publ ication, and that details
may vary with production changes.
1.2 GENERA L SPECIFICA TIONS
Automatic Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . PURPLE Mode: 2 ft. to 11 ft. (0.6m
\O
3.3m)
BLUE Mode: 2 ft. to 15 ft. (0.6m to 4.5m)
RED Mode: 3
ft.
to 30
ft.
(0.9m to 9m)
YELLOW Mode: 3 ft. to 43 ft. (0.9m to 13m)
Automatic Sensor Measuring Angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 degrees
BCPS (Beam Candle Power Seconds) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2,900 (Manual)
Recycle Time (fully charged or fresh batteries) . . . . . . . . AC: 7 seconds (Manual). 0.5 to.., ;aconds (Automatic)
DC: 5 seconds (Manual) with NiCad batteries, 0.5 to 5 seconds (Automatic) with NiCad batteries
9 seconds (Manual) with alkaline batteries, 0.5 to 9 seconds (Automatic) with alkaline batteries
Flash Duration (approximate) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1/1000 second (Manual)
Color Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5500 degrees Kelvin
Angle(s) of Illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 degrees horizontal, 45 degrees vertical
Operating Position(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Vertical, with variable tilt reflector assembly
Power Sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AC: 105· 125V with V ivi tar SB-4 AC Adapter
DC: Four AA alkaline 1.5V batteries or
Vivitar Interchangeable NiCad Battery Pack (NC-3)
Flashes per Set of AA alkaline batteries . . . . . . . . . . . . . . . . . . . . . . . . . . 75 (Manual). 75-800 (Automatic)*
Flashes per 15-minute charge with NiCad Battery Pack . . . . . . . . . . . . . . . . 50 (Manual). 50-800 (Automatic)•
Camera/Electronic Flash Synchronization Connection(s) ......... PC sync cord, hot shoe, or sensor holder cord
*Number of flashes in the Automatic Mode depends on Flash to Subject Distance, room reflectivity, and Auto f-stop
setting used .
Vivitar 37 4 60596 (11/80)