Advertisement
Troubleshooting
Tetris
No Sound
*
Check
the
volume
control adjustment.
*
Check
for
proper
voltage
on
the
PCB
edge
connec-
'
tor.
*
Check
the
wiring
from
the
PCB
to
the speaker.
*
Check
the
speaker
for
low
resistance
(approximate-
ly
8Q) between
the +
and -
tabs.
Bad Sound
*
Check
the
wiring
to
the
speaker
for
bad
solder
con-
nections.
*
Check
the
sound
with another
speaker.
No
Switch Input
*
Check
the
ground
connections
to
the switches.
*
Check
the wiring
between
the
PCB
and
switches
for
proper
connection.
*
Check
the
switches
with an
ohmmeter
to verify
proper
operation.
Switch Operates
Incorrect
Function
*
Check
the wiring
between
the
PCB
and
switches
for
proper
orientation.
*
Check
the wiring
for shorts
between
switch
inputs.
Coin Meter
Doesn't Function
»
Check
the
wiring
to
the coin meter.
*
Check
that
+5V
to
+12V
is
on
the
+
side
of
the
meter.
Advertisement
