GE MEDICAL SYSTEMS
2127661
LOGIQ 400 SERVICE MANUAL
FUNCTIONAL CHECKS
4–37
REV 6
4–4 POWER SUPPLY ADJUSTMENTS
This section provides power supply adjustment procedures for the LOGIQ 400. Adjustments should be only made
when necessary. Power supply adjustments should be made in accordance with the schedule for periodic mainte-
nance in Chapter 7 of this manual.
LOGIQ 400 has two types of Power Supply Unit, Power Supply Unit (2126982 for 115V and 2126981 for 220V) and
Power Supply Unit 2 (2144481 for 115V and 2144480 for 220V). The Power Supply Unit is installed on the console
which is shipped before May, 1996. The Power Supply Unit 2 is installed on the console which is shipped after June,
1996. The part number, components, and adjustment procedures are different between both types of Power Supply
Unit. The section 4–4 provides the adjustment procedures for both types of Power Supply Unit.
Before beginning the power supply adjustments procedure, make sure the power outlet should provide the power line
standards. Refer to Chapter 2, Installation.
Note
If the adjustment pot is over–turned clockwise, the power supply output is down to protect the circuits
against the over–voltage. In that case, power the LOGIQ 400 OFF and turn the pot counterclock-
wise all the way. Then power it ON and try to adjust the power supply again.
There are five adjustable DC power supplies on the LV Unit, Low Voltage Unit of Power Supply Unit. The LV Unit is
located at the bottom of the console as shown in ILLUSTRATION 4–30 on page 4–39.
There are seven adjustable DC power supplies on the LV2 Unit, Low Voltage 2 Unit of Power Supply Unit2. The LV2
Unit is located at the bottom of the console as shown in ILLUSTRATION 4–30 on page 4–39.
There are five adjustable DC power supplies on the LV3 Unit, Low Voltage 3 Unit of Power Supply Unit3. The LV3 Unit
is located at the bottom of the console as shown in ILLUSTRATION 4–30 on page 4–39.
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