Star Tech Journal

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NECK PCB ASSEMBLY
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J9
FOCUS TERMINAL
COVER
4. Deflectlan Baerd
Install a 1 N751 A zener diode
(5.1 V) to the vertical sync input,
anode to ground, as follows:
a. Locate the first pad connec·
ted to J1 pin 5 on the trace or
circuit side of the board.
Note: PLL b0ard is installed
in place of J1 .
b. Locate the pad going to
NOTE:
ground near J1 pin 6, between
pin 6 and R10.
c. Install the zenerdiode(anode
to ground) between these
two pads on the circuit side
of the PCB.
ing one lead of the cap to the
cathode pad (square pad) of
04 and the other lead to the
pad of C5 connected to the
gate of Q4. Install the cap on
the circuit side of the PCB.
15. a RemoveC5(0.1 uF)axialcap.
e. Route the high-voltage anode
b. Install a 0.22 uF (25 V) axial
cap between the cathode and
gate of Q4(MCR101), solder·
lead away from the deflection
board, and secure it with a wire
tie wrap.
Upright Firefox games built after
game serial number UR00802 will
not need this modification. This
modification has already been in·
corporated on all sitdown Firefox
games.