1 689 975 140 2013-07-01| Robert Bosch GmbH
26 | EPS 807 / 815 | Adjustment and Functional Testen
7.4.2 Printed circuit board 1 688 400 251 (from FD
01-2001)
If main switch Q1 is on the following LED’s must lit on
A5 (DZE):
$ V55 - 24V-Supply (control signal on converter)
$ V68 - 5V- Supply (computer, logic, interface etc.)
If not, test the supply of the LP (transformer T2, safety
fuses F10, F5).
Further LED V23 should blink (watchdog). This identifies
a proper performance of the program. Should it be off
the operating program must be reinstalled (download).
LED V29 identifies the stop command of the speed
measurement on the driver. Blinking indicates error
(interface to the control unit / indicating instrument or
converter is interrupted, maximal speed is exceeded,
false running direction etc.) – comply with error mes-
sage of the BAG.
Fig. 43: Printed circuit board 1 688 400 251 (from 01-2001 till
06-2004)
Fig. 44: Printed circuit board 1 688 400 251 (from 07-2004)
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