Service manual

Chapter 2

2-3

F-2-4

*1: black shading correction (the dark output analog level is adjusted so that the image density digital level is '0').

*2: scanning lamp warm-up (lasts until the temperature of the scanning lamp stabilizes).

*3: gain correction (standardizes the rate of amplification of the analog video signals generated by the CCD; main/sub scanning point adjustment)

2.1.2.2 Basic Sequence of Operation in Response to a Press on the Start Key (book)

0008-2931

Basic Sequence of Operation in Response to a Press on the Start Key(BOOK)

F-2-5

shading position

1. black shading*1

2. scanning lamp ON

3. scanning lamp

warm-up*2

5. main/sub scanning

position adjustment

4. gain correction*3

STBY SREADY

reader motor

scanning lamp

HP sensor

:motor forward

:motor reverse

:HP sensor ON

:scanning lamp ON

shift shading*2

HP HP

gain correction*1

Start key