5.2 - Service electronics
88
TCT-2301 Service instructions
M2007/3en
©BTG 2004
TP15
+24V
Fuse
250V
1A
F1
P3
Conn.
block
Fuse
250V
1A
F2
Fuse
250V
1A
F3
TP14
+5V
–RS485
TP13
GND
–RS485
TP9
+5V
TP12
V
in–RS485
TP4
LED–ACT
TP10
GND
TP3
LED–SET
TP1
1
+12V
TP2
DSP
P3
P13
P6
P10
P8
P5
COM+ DO1 DO2 DI1
TP17
+7V
TP16
1.23V
ref
TP18
Q2
gate
TP1
TEST
P10
Conn.
block
TP5
V
in–A/D
TP7
SDO
TP8
2.5V
ref
J3,6
V
ana–A/D
J3,1
GND–A/D
TP6
Vdig–A/D
Fig 48 Measurement points on
the electronics card