SECTION 7
TROUBLE·SHOOTING THE COIN CHANGER
(See Figure 7-1)
Trouble-shooting the S75-9800A or 575-98008 coin
changer is a simple matter since almost all functions
of the coin changer are controlled by the electronic
logic system mounted on one printed circuit board.
The printed circuit board was
not
designed or
intended to be repaired in the field.
If the logic board is out of warranty, and you would
prefer to service it yo"urself, electronic training and
technical assistance is available from any of the
Coinco Branch Offices.
Listed below are some visual checks that can be
made on the board and changer, and also, a
sequential test that you can make on the changer
using the Coinco #40 51 86 tester.
A. VISUAL CHECKS - LOGIC BOARD
1
.
Visually check to make sure there is
no
contamination
on the
l
o
gic board.
17
2. Check the solder connections of each
component for a possible poor connection.
Check the leads of the large 220 mfd
capacitor in particular.
3. Visually check the various components and
their leads to be sure they are not broken or
touching.
4. Check the logic board for burnt components
or an open fuse link.
B.
VISUAL CHECKS - COIN CHANGER
1 . Check all terminals to be sure they are not
loose or disconnected. Check in particular
for loose connections on the coin switches.
2. Check the harness for possible interference
with the coin switch wires.
