Bosch EPS 708 Repair Instructions page 17

5.3.5 PCB (A14)
i
Circuit board A14 is included in the scope of delive-
ry of retrofit kit CP4 (1 687 010 390) and replaces
circuit board A6 when making the conversion.
Fig. 24: Circuit board 1 688 400 537
V21 15 V external voltage supply
V22 5 V internal voltage supply
V23 No function
V30 5 V internal voltage supply of pressure sensors
V70 6.5 V internal voltage supply
V96 13.5 V internal voltage supply
V72 3.3 V internal voltage supply
V74 USB communication status (LED flickers)
V82 No function
V1 Firmware status LPC800
V21 V22 V23 V30 V70
LED flashes during active USB communication. The LED is off in
1)
the absence of USB communication.
See connection diagram 1 689 927 302 in the appendix
2)
Robert Bosch GmbH
V23
V30 V70 V96
V72 V74 V82
V1
V22
V21
458863-60_Pal
V96 V72 V74 V82 V1
1)
Checklist for normal operation | EPS 708 | 17
Jumper setting for circuit board (A14)
Fig. 25: Jumper settings
Status
voltage supply and processor in
good working order. No faults oc-
curred
Emergency stop active or 15 V po-
wer supply 24 V voltage supply via
plug X320 faulty
2)
24 V voltage supply via plug X1
ty
24 V voltage supply via plug X1
15V voltage supply via plug X320
faulty
Short circuit 5 V voltage supply for
pressure sensor B48 or B49
en
X49
X2
458797-39_Pal
faul-
2)
and
2)
2)
|
1 689 975 233 2018-05-08