EN 164 3139 785 315329.
Circuit- and IC Description
9.1. PSU Board
9.1.1. General
MAINS CONNECTOR
Figure 9-1 PSU Board Layout
The PSU board provides the following connection to the rest
of the set:
• Connector A: Supply/Signal to Analog Board
Pin no. Supply / Signal Remarks
1 12VSTBY
2 STBY control >2.5V = supply for conn. B
is off (Standby mode)
<0.5V = supply for conn. B
is on (On mode)
3 5VSTBY
4 DD_ON >2.5V = supply for conn. D
is on
<0.5V = supply for conn. D
is off
5 3V3STBY
6 IPFAIL >4.0V = power is good
<0.5V = power fail
7 5NSTBY
8GND
9 33VSTBY
10 GND
11 VGNSTBY
9. Circuit- and IC description
• Connector B: Supply to Digital Board
Pin no. Supply / Signal Remarks
13V3D
23V3D
33V3D
43V3D
5 GND
612VD
7 GND
8 GND
95VD
10 HD_ON >2.5V = supply for conn. C
& G is on
<0.5V = supply for conn. C
is off
11 GND
12 5ND
• Connector C: Supply to HDD
Pin no. Supply
112VH
2 GND
3 GND
45VH
• Connector D: Supply to Basic Engine
Pin no. Supply
112VE
2 GND
3 GND
45VE
• Connector E: Not in use
F: Not in use
The PSU is designed with short-circuit protection that will
shutdown the power supply. When this happen, the voltage
stored in capacitor C1 and C40 will prevent the Power Supply
to turn-on, therefore they must be discharged before the PSU
can function normally again.
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