Kodak DirectView CR 825 Diagnostics Manual page 170

DIAGNOSTICS
10DEC05
Table 18 Test Points on the DIGITIZER BOARD A3
DG4825-1
Page
TP
170 of 180
1
2
3
5
6
7
8
9
10
11
12
13
14
Description
+24 V DC power
Ground
+5 V DC power
GALVO CLOCK
Ground
"Line Start Signal" connects to "line
done" on GALVO BOARD A4
"Convert Start Not"
Ground
FFWR (FIFO WRITE)
FFRD (FIFO READ)
FFRST (FIFO RESET)
BYTSEL (BYTE SELECT)
PIXSEL
Expected Signal
22.5 - 25.5 V DC
0 V DC
4.9 - 5.1 V DC
Approximately 342 kHz during scanning
0 V DC
High pulse approximately every 13 ms
during scanning
Pulses low for every pixel pulse.
200 kHz during scanning.
0 V DC
One pulse for each pixel during scanning
One pulse for each pixel during transfer
One pulse for each pixel before transfer of
image
One pulse for each pixel for each high and
low byte
Not used
Test Points and LEDs