Kodak DirectView CR 825 Diagnostics Manual page 174

DIAGNOSTICS
10DEC05
DG4825-1 TP
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Name
5 V DC_I Interface +5 V DC POWER
SUPPLY
DGND Digital ground
IGND Interface ground
PMT_HV_CTL High voltage power supply
control system for the PMT
PMT_HV High voltage for the PMT
AGND Analog ground
AGND Analog ground
–5 V DC_A Analog –5 V DC POWER
SUPPLY
–12 V DC_A Analog –12 V DC POWER
SUPPLY
12 V DC_A Analog +12 V DC POWER
SUPPLY
5 V DC_A Analog +5 V DC POWER
SUPPLY
PMT_1 Signal from PMT 1
2.5 V_BUF_REF +2.5 V DC reference
NOM_8.9 V –8.9 V DC reference
PMT_2 Signal from PMT 2
AGND Analog ground
PIX_A_1 Pixel signal +
PIX_A_2 Pixel signal -
Description
Test Points and LEDs
Expected Signal
5 V DC within the tolerance of the
REGULATOR on the DIGITIZER
BOARD A3
0.0 V DC
0.0 V DC
0.0 - 8.9 V DC
0 - 630 V DC
0.0 V DC
0.0 V DC
–4.9 - –5.1 V DC
–11.75 - –12.21 V DC
11.5 - 12.5 V DC
4.8 - 5.2 V DC
0 - 12 V DC in ratio to light and
voltage on the PMT
2.48 - 2.52 V DC
–8.8 - –9.0 V DC
0 - 12 V DC in ratio to the light
and voltage on the PMT
0.0 V DC
0 - +2.5 V DC from low light to full
light on the PMTS
2.5 - 0 V DC from low light to full
light on the PMTS