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( ) 17. Attach a crimp terminal to the wire from CRO and
CRl.
( ) 18. Repeat above (#17) procedure for black wire from
CR2 and CR3 and connect it to terminal #13 of the
transformer.
( ) 19. Install and bolt heat sink (and diodes) onto the
PSC board.
NOTE;
WARNING!!1
The 4 large capacitors will be destroyed if power is applied
while they are installed backwards.
On the two large capacitors CO and Cl, the negative side
of the capacitor bolts to the DC ground plane of the PSC
board.
The positive end of capacitors CO and Cl bolts to
the unregulated 8 volt plane of the PSC board.
( ) 20. Place lockwashers on four 10,-32x3/8" screws, insert
them from the underside of the board and mount
capacitors CO and Cl.
( ) 21. In a similar manner, mount C3 with the negative
terminal bolted to the ground plane and positive
terminal bolted to the +16 volt plane.
( ) 22. To install capacitor C2, bolt the positive ter
minal to the DC ground plane and the negative
terminal to the negative (-16 volt) plane.
PAN INSTALLATION (OPTIONAL)
( ) 23. Attach the fan leads to lugs #6 and #9 or #1
and #4 to supply 115 VAC to the fan.
wiring is standard for all input AC wiring
configurations.
SEE MAINFRAME ASSEMBLY SECTION TO INSTALL POWER SUPPLY IN
CHASSIS AND CONNECT TO MOTHER BOARD.
2
8
Connect it to terminal #15 of the transformer.
OBSERVE POLARITY
POWER SUPPLY PS-28U
Assembly Instructions
This
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