Checking The Fuses; Checking The Leds On D801; Standby Mode; Checking The Control Voltages - Siemens MULTIMOBIL 10 Troubleshooting Manual

3.2.2 Checking the fuses

Open the front cover of the control unit.
Loosen the Fuse carrier, which are mounted on the transformer bracket of the
control unit and check the continuity of fuse link. If fuse link has responded for
overcurrent replace the Fuse Link.

3.2.3 Checking the LEDs on D801

F1 6AT
F2 1AT
F3 2.5AT
F4 2.5AT
F5 10AT
F6 0.8 AT
F7 1.6AT

Standby mode

On D801 the following LED's are illuminated
V30 Supply for SMPS
V31 Supply for Filament Inverter.
V32 Supply for Rotating Anode ckt
V35 12V AC Supply for Collimator
V36 +VP supply
V50 24V DC on D801
V23&V24 DC supply for filament inverter
3.3

Checking the Control Voltages

In the standby state of the Unit,measure the voltages DC at X15 connector of D915
PCB.
Pin Signal Name
No.
1
2
3
4 DC supply
5 DC supply
6
7 DC supply
- nc - = No Connection
Siemens Ltd. Med Division India
Filament Inverter supply.
SMPS supply
Rotating Anode supply .
24V Ac supply for Control ckt.
Collimator supply
DC-DC Conv. ckt.
220V AC supply for contactors.
Input/Output
Dgnd
-nc-
Dgnd
Agnd
max. permissible
voltage/current
Input
-nc-
Input
Input
Input
Input
Input
Version 4.0
Service Manual
Service Instructions
0V
-
0V
+ 5V
+15V
0V
-15V
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