Epson PhotoPC700, Service Manual

Page: 41 / 51

PhotoPC700
Chapter5 Adjustment
Rev. A 5-7
11. Each hexadecimal number which is divided to one byte is again changed to decimal number
respectively. Example numbers will be;
AGC+2 (5D): 93
AGC+1 (3D): 61
AGC
±
0 (24): 36
AGC
−
1 (14): 20
12. Be sure that the value of AGC
±
0 value is within 15 to 100. (36 in the example above)
The value of AGC = 15
∼
100
13. Input 4 numbers, which are changed to decimal number in procedure 11 above, into the
following 3 formulas, and be sure that each calculated value is within the following range.
Formula 1: (AGC+2) / (AGC+1)= Approximately 1.5(from the example above)
Formula 2: (AGC+1) / (AGC
±
0)= Approximately 1.7(from the example above)
Formula 3: (AGC
±
0) / (AGC
−
1)= 1.8(from the example above)
(AGC+2)/(AGC+1) = 1.1
∼
2.8
(AGC+1)/(AGC
±
0) = 1.1
∼
2.8
(AGC
±
0)/(AGC
−
1) = 1.1
∼
2.8
CAUTION
If each calculated value is not within the range above, adjust them
again. Also, if re-adjusted values are not within the rage again,
exchange CA1, CA2 boards or CCD.
5.1.5 Flange-Back Adjustment
Here explains adjustment procedure to input a flange-back value. This adjustment adjusts focus to
the subject (Siemens star chart), which is located a certain distance away from the camera, and
stores that value as standard value. This adjustment should be done when replacing the lens unit,
CCD and CA2 board. Also, even when the lens unit, CCD or optical unit is disassembled and
assembled, this adjustment should be performed.
CAUTION
Be sure to perform section 5.1.2 “Initialization” before starting this
adjustment. Also, make sure to perform section 5.1.4 “5100K AWB
Adjustment” after performing “Initialization”.
1. Perform 1 to 3 procedures in section 5.1.1, and execute the adjustment program.