Bosch BEA 150 - 10.3 Block circuit diagram of voltage supply

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10.3 Block circuit diagram of voltage supply
gnge
U N
110V ; 125V Fi1 = 2,5 A 230V ; 245V Fi 1 = 1,25 A 50/60 Hz
Trafo
4
Fi 1
Power switch
3
2
1
0V
+15V
-15V
110V
230V
5
2
1 2
3 4 5 6
7
X18
RPM/ temperature
IR- receiver
X12
Internal printer
Membrane keypad
TFT display
Control module
123
X14
1
2
3
X19
X13
1
2
1
2
X4
X17
X4 X5
X6
X8
5
X3
X8
X2
X1
X22
1
2
3
4
1
2
3
1
2
3
Pump
Valve
X24
X26
1
2
1
2
Disk drive
1
2
3
4
AMM
Hard disk
1
2
3
4
Pressure switch
1
2
O2 sensor
1 2
3
External printer
X7
X34
X25
X20
X21 X9
X16
X23
T
U2
U3
U4
GND U2L
VCC
U2
U3
U4
GND U2L
VCC
11, 13
1, 9, 10, 12, 14
16
6 8
2, 4
+ 5V
34
+ 5V
+ 12V
40
25
+ 5V
14,5 VAC
11 VAC
0V
11 VAC
14,5 VAC
22VAC
0V
RTM
X3
15
10
1
2 3
9V - 16V
7 - 11mV
+ 12V + 12V
NO2 sensor
+ 12V
22
1 2 3 4 5
1KV
8
9V - 16V
+ 12V
16
1
2
3
+ 5V
PC- keyboard
X15
RS 232
X11
6
9
DC
DC
DC
DC
DC
DC
DC
DC
DC
DC
+ 12V
+ 8V
+ 5V
- 5V
- 12V
1
2
NO sensor
Stromlauf_BEA_eng
3
4
+5V
URef GND
USignal
T2,5A
T5 A
T5 A
T5 A
T5 A
X6
OBD-PCB
10
! Please note: Do not change the wiring of X24 and X26.