Compensation Of Analog Outputs By Service Mode 4-0D; (Necessary After Replacing The Dcp2) - KIP 9000 Service Manual

4. 4 Compensation of Analog Outputs by
Service Mode 4-0d
(Necessary after replacing DCP2)
This operation is needed only after replacing the DC Power Supply 2 (DCP2).
[Technical operation]
The Main Controller PCB needs to be supplied with 5Vdc from the DC Power Supply 2 (DCP2), but
in actual case there are many cases that the power from DCP2 to Main Controller PCB is lower
than 5Vdc (as "4.99Vdc" or "4.98Vdc"). In such case the Analog Outputs from the High Voltage
Power Supplies (HVP1-6) and Bias Power Supply (BIAS) are very slightly smaller than what they
are needed to be.
The Service Mode 4-0d (Compensation of Analog Outputs) compensates those Analog Outputs to
the needed levels automatically. For example if the current actual input to Main Control PCB is
"4.98V" and it is input to the Service Mode 4-0d, the KIP9000 firmware takes an internal process to
"increase" the actual input (4.98Vdc) to the needed input (5Vdc), and the Analog Outputs from
HVP (1-6) and BIAS are increased as well consequently.
The input voltage to Main Control PCB has been measured and correctly input to the Service
Mode 4-0d before shipment. If the DC Power Supply 2 (DCP2) is replaced in the field, it is required
to measure the actual input and input to the Service Mode 4-0d. (KIP9000 firmware takes
necessary compensation automatically if only the actual value of input voltage is set on 4-0d.)
[Operation]
1. Find J-201 on the Main Controller PCB, and measure the DC voltage between J201-3 (yellow)
and J201-4 (blue) with multi-meter. This is the actual input voltage to Main Controller PCB.
2. Enter the Service Mode, select the Adjustment Mode 0 (Sub Mode No.0), and select the Sub
Mode No.0d.
Input the actual value input voltage to Main Controller PCB.
J-201
4-104
J201-3
J201-4
K115sm4ea.doc