IBM 3279 2A Maintenance Information page 17

3279 MIM
Chapter
1.
General Description and Location
\-6
Analog Card
* *
Amplifier Card
Test Points (see Figure 6-11) Power Supply Card
***
, View hole for
CRT filament
Jumper
o
HCENT
(J)Q:.~:PURITyA
o
STATIC
BLAT0B~}
4BLAT
G0R~
GAIN*
MIN ~ 0 Q}COLOR N
MAX
~ ~
S
BALANCE
PI? All 1011 alpl?S
I
(
In'
\"
~p'4
I ' •
\ 1'1'2
L."'.l_
***
Two ground wires
Video Card
(for Test Points,
see Figure 6·10)
*
Factory preset (some presets are only on early level cards)
**
Four Static Convergence Controls
*
**
DANGER
Ensure the insulated covers are in place on any
transistor in these two positions as the cases are at dangerous
potentials (1 kV pkl
Figure \-4. Display Unit - Rear View, Open
Convergence and Purity
Coil Assembly