HENNESSY INDUSTRIES Coats IBS 2000, Руководство по обслуживанию и руководство по устранению неполадок

Страница: 24 / 40

20 • Service Manual — COATS Model IBS 2000
Direct Drive
Keypad Problems. Keypad Problems.
Yes
Keypad Problems.
No
Yes
A/D ARM PROBLEMS
Perfor m pre-
diagnostic check.
Retur n the ar m to
HOME. Is the W
now flashing?
No Yes
Is the ar m in HOME
position?
Yes
No
Are the
potentiometer
readings within
tolerance?
S e e K E Y PA D f l ow
char t.
C h e ck
Potentiometer
adjustments. See
A R M
C A L I B R AT I O N .
Troubleshooting
complete.
Retur n to
operation.
Adjust the
potentiometers. Are
the readings stable?
Check Cable
connections at CPU
board and Ar m.
Replace the cable.
Troubleshooting
comptete. Calibrate
the arm. Calibrate the
balancer.
Yes
Use VOM to check supply
voltage on the A & D
potentiometers. Between
pins 1&3 for D, and 4&6
for A. Is voltage stable?
No
Yes
No
Use VOM to check
voltages on the
potentiometers
between 2&3 for D
and 5&6 for A. Are the
readings stable?
C h e ck
connections or
replace the
potentiometers.
Troubleshooting
complete.
Calibrate the Ar m,
Calibrate the
balancer.
Yes
Use VOM to check
voltage on P7 of
CPU board;
between pins 1&2
and 4&5. Are the
readings stable?
Yes
No
R e p l a c e C P U
board.
A & D Arm
Problems