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SUN TECHNICAL BULLETIN
Bulletin No. FS-09
Date : June 6, 1984
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Product ( S ) : SunStations Model Sun-2/120 and Sun-2/170 (with 19"
monochrome monitors
Subject-	New PROMs on the Sun-2 video controller board
a Information	□ FCO (Field Change Order)
ixJ Action	□ Mandatory. Implement by __.
Required	|—i _ .	.	.	, .
I—! Implement on next service call.
□	Implement on failure of specified part.
□	Discretionary or optional. Serial Numbers/Revision Levels Effected:
Revision
Product	Serial Numbers	Levels
Sun-2/120___Below 3719___
Sun-2/170	Below 3442
Description:
Sun-2 video controller board (Revision -08) in Products referenced above contains the revision of two PROMs which change the refresh rate of the monitor:
64.56 HZ to 66.70 Hz	verticle timing
65.10 KHZ to 62.50 KHZ	horizontal timing
Lowering the refresh rate lowers the temperature of the monitor.
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The PROM change requires readjustment to the monitor. After replacement of the Sun-2 video controller board, you will need to adjust the horizontal hold signal, geometry of the picture and possibly the intensity of the monitor. Instruction procedures for replacement of the board and performing monitor adjustments will be provided as a Sun-2 video controller board exchange is need.
TECHNICAL BULLETIN HISTORY
Bulletin
Number	_Subject_
FS-01	Spurious error message after rewind functions on Archive
V cartridge tape drives
FS-02	115V/220V line power conversion for Sun Models 100U and
150U (distribution on request only)
FS-03	Increasing read/write reliability of Archive V cartridge
tape drives
FS-04	Reliability and performance improvement of monochrome
monitors
FS-05	Mouse performance; pairing of mouse pads with mice
FS-06	Supplement to Technical Bulletin No. FS-05 -- Parallel
mice
FS-07	Location to the 3-Com 10 Mbps Ethernet interface board
in Model 120 cardcage
FS-08	Resolution of fuzzy screen on 19" monochrome monitors
after power on
FS-09	New PROMs on the Sun-2 video controller board
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