84
Trouble shooting
Display blank, but machine is
working otherwise.
Turn the machine’s wall switch off and on again.
Fault persists.
Machine working
Check glass-tube fuses F2 and F3 on program
control unit PCB. Rating: 1 A/250 V.
Fuses sound
Fuse fault
Check that input voltages to PCB are correct. At
connector X72, measure between the following
inputs:
X72:1 - 2
ca 1,75 V ~
X72:2 - 3
ca 1,75 V ~
X72:6 - 7
ca 13,5 V ~
An incorrect voltage
Voltages correct
Remove connector X172 on transformer T10.
Measure the voltages between the following
outputs on the transformer board.
5 - 6
ca 1,75 V ~
6 - 7
ca 1,75 V ~
1 - 2
ca 13,5 V ~
Voltages correct
An incorrect voltage
F2, F3
Display
2316
1
7
X72
2316
3348
X172
1
7
PCB transformer T10
Transient fault. No action
required.
Change fuse(s) and check
functioning.
Fault in wiring between
transformer and circuit board.
Check wiring and replace if
necessary.
Replace transformer T10.
Program control unit PCB
faulty. Replace PCB.
Cause/Action
Error code/symptoms
Fault-finding
Содержание EXSM 230 S
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Страница 32: ...32 Mechanical and electrical design Control unit ...
Страница 93: ...93 Trouble shooting If machine vibrates excessively A Tighten mounting bolts Fig 101 101 2408 ...
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