Incoming Goods Inspection - Bosch TCA640 Series Repair Instruction

7.3

Incoming goods inspection

The incoming goods inspection allows machine faults to be
localised quickly and suitable repair measures to be initiated:
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Follow the sequence in the table.
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Repair any faults and repeat the repair routine to the end.
1. Check machine for visual damage
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Housing part broken, damaged or deformed?
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Power cord or mains plug damaged?
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Has the customer opened the appliance?
2. Check the mechanical elements
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Drip tray with dregs drawer clean, inserted.
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Does function switch move easily?
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Ground coffee lid in place, closed?
3. Switching on the appliance
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Switch on the appliance with the mains switch.
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Is illuminated ring on the "On/Off" button lit?
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Switch on with standby button, appliance initialised? Conduct
drawer test with original tray.
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Insert test drawer, appliance rinses independently. Are
illuminated rings on the standby and cafe buttons lit?
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How long does the machine require to heat up, rinse?
(Standard time approx. 70 sec.)
58300000120060_ARA_en_c.doc – 18.09.09
4. Fill water tank
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Water tank leaking?
5. Coffee preparation without coffee
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Open and close ground coffee lid, are messages indicated?
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Press the cafe "on" button. Is water running out of the coffee
outlet?
6. Coffee preparation without beans
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Check clockwise rotation of the grinding unit.
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Brewing stops, is "Add beans" message indicated?
7. Check tank sensor
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Remove water tank, is "Add water" message indicated?
8. Hot water preparation
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Press function switch to draw hot water.
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Is the pump functioning?
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Is hot water running out of the steam pipe?
9. Steam generation
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Press function switch to draw steam. Approx. 30 seconds until
clock timing regular?
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Is steam flowing out of the steam pipe?
10. PC service diagnosis
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Conduct input diagnosis.
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