Bosch tca60f9 - Page 93

58300000111195_ARA_en_f.doc – 02.06.09 Seite 93 von 102
Appliance does not switch on
5. Check voltage at power module output to transformer (220–240
VAC)
Check voltage on plug CP2B on power module.
► No voltage → defective power module (if voltage between F1
and F2 = 220–240 VAC)
► Power supply available → see Point 6
6. Check voltage at power module input from transformer
The secondary voltages (15 VDC / 9 VDC) of the transformer are
measured on the flat plug CP4 (2 x red = 15 VDC / 2 x white = 9 VDC)
► No voltage → defective transformer
► No 15 VDC voltage → defective transformer
► No 9 VDC voltage → defective transformer
► Voltage available → see Point 7
7. Check voltage at power module output to logic (5 VDC)
The output voltage is measured from the power module to the logic
module (control electronics) on plug CP9, terminals 1 = GND (brown)
and 2 = + 5V (red).
► No voltage → defective power module
► Voltage available → see Point 8
8. Check voltage on logic module input
Measure voltage input on plug CM9 of the logic module on terminals 1
= GND (brown) and 2 = + 5 V (red).
► No voltage
→ defective ribbon cable
► Voltage available
→ defective logic module