181
9REPAIR
9.2 POWER SUPPLY ALS 256
ALS
20X
256
9.2.2
Checking output voltages
5.2 V logic voltage
The following LEDs indicate that the logic voltage
applies properly::
– Background illumination operator panel (green).
– Green LED [199A] next to the D-Sub connector at
the CPU board connector plate (D502).
– Green LED [200A] next to the 10pin connector at
power supply (D204).
– Green LED [201A] near the 10pin connector on the
CPU board (D502, indicates 2.5 V which are gener-
ated out of 5.2 V).
[199] LED (A) indicating correct logic voltage at the CPU board.
[200] LED (A) indicating correct logic voltage at the power supply.
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