INFICON SRT-422 Crucible Indexer - Manual (Page 64)

Page 62 Trouble Shooting
Section 5.2: ROUTINE TROUBLESHOOTING
Symptom Possible Cause(s) Procedure
1. When indexer is switched on,
front-panel LED on control unit
does not display anything, and
rear-panel READY light is not lit.
DANGER
Shocks from 120V and 240V
power can cause physical injury
and even death. Perform this
and all other internal checks with
the Input power cable
disconnected.
1a. Incorrect input power cable
connected.
1b. Input power cable not properly
connected.
1c. No power at wall receptacle that
power cable is plugged into.
1d. Fuse blown.
1a. Make sure that power cable is
correct type for input power
voltage.
1b. Check to see that power cable
is securely plugged in at both
ends.
1c. Plug power cable into a different
receptacle of correct voltage, or
test to see whether power is
available at the original
receptacle
1d. Open fuse holder in rear panel
of control unit, check condition of
fuse. If necessary, replace with
correctly rated fuse. If fuses blow
repeatedly, check control unit for
internal shorts in input power
circuit
2. LED and READY light perform
correctly. But drive motor does
not turn as indexer goes through
its initialization routine and as
pocket selection is changed.
2a. Motor cable (which connects
control unit to index drive unit)
not properly connected.
2b Continuity problem in motor
cable.
2c. Continuity problem between
motor and connector J1 on
interlace PC board in index drive
unit
2a. Check to see that connectors on
both ends of motor cable are
plugged in and that screws
securing these connectors to the
connectors on indexer
components are screwed in
reasonably tight.
2b. Check continuity between pins 6
and 14 on the ‘D’ connectors on
both ends of motor cable.
2c. Open case of index drive unit
and check continuity of wires
running between motor and J1
pins 5 and 6.
3. LED on control unit front panel
flashes between pocket currently
selected and zero.
3a. Index drive motor cannot rotate
hearth because of buildup of
material under edge of cutout in
top of source.
3b. Drive Assembly could be
binding
3c. A higher torque selection is
required.
3a. Clean deposited material from
cutout edges and from ridges in
top of hearth
3b. Check for proper alignment
3c. Set switches 7, 8 to a higher
torque setting
Table 5.1: Trouble Shooting guide