25/08/2004 ©
Söring
Service-Manual Arco- and RF-units
1
not valid for A-3000/ -2000
2
not valid for Arco-2000
-54-
3
not valid for MBC600
4
not valid for Arco-1000
12. Service- and adjustment procedures
This chapter is intended to support the trained service technician in case of repair, for
troubleshooting and for calibration. It shall be stated once more that:
Modifications and repairs on this equipment must only be performed by the
manufacturer or by persons authorized by him. If non-authorized persons perform
modifications or repair on this equipment or its accessories the manufacturer
undertakes no liability. Furthermore the warranty expires in this case.
Most adjustments of the equipment can be done within the Service-mode. For these
adjustments it is not necessary to open the equipment. The adjustments are performed
with the keyboard on the front panel.
An adjustment of modules inside the equipment shall be carried out only in exceptional
cases because the potentiometers are sealed after adjustment and de-adjustment is
nearly impossible. After every adjustment the potentiometers are again sealed with
securing lacquer.
The LEDs inside the equipment are for functional checks and allow easy troubleshooting.
After switching-on the equipment, the micro-controller first checks all operational
parameters necessary for error-free operation. If the self-test detects deviations from the
given specifications, an error-code is displayed on the front panel and the use of the
equipment is inhibited. In order to start the equipment nonetheless, service mode has to
be started by pressing the button "Cut step 1" during switch-on (see below). This is only
allowed for service purposes! The meanings of the error-codes are given in the
chapter "Error indication at system start".
12.1. Description of LEDs and adjustment potentiometers
The following plans show the placements of potentiometers and LEDs. The function of
the potentiometers is described in more detail in connection with the adjustment
procedures of the different modules. The meanings of the LEDs for function-check of the
equipment are as follows:
High-power supply
D23 Current limiting: Lights up, if maximum output current is exceeded (e.g.
short-circuit of Cut-module)
D27 : Mains voltage outside the allowable values
(230v
±
15%)
P2 Current limiting
P3 Voltage adjustment (100V)
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