Voltage Check Procedure; Pulse Width Modulation (Pwm) Adjustment Procedure - AGFA Avantra 36/44 Service Manual

5.7

Voltage Check Procedure

Use the Voltage Check Procedure to insure that the correct voltages are being
supplied to the electronics of the system.
Tools Required: Digital voltmeter
Steps:
1. Open the right side doors. Refer to Section 5.2 on page 5-3 in Section 5:
Component Removal/ Replacement Procedures .
2. Remove the electronics enclosure cover. Refer to Section 5.3 on page 5-5
in Section 5: Component Removal/Replacement Procedures .
3. The voltage measurements are taken across the appropriate capacitor for
each voltage (except the -5.2 which is taken across a diode). Using a digi-
tal voltmeter, check the voltages on the DEC at the following locations:
Location
C248
C253
C272
C258
CR2
5.8 Pulse Width Modulation (PWM)
Adjustment Procedure
Run the Pulse Width Modulation Test to check dot gain.
The Pulse Width Modulation Test was designed to run with AGFA film only. For
other vendors use the densitometer to select the best 50% dot screen and then
select the number to the left.
Tools Required: Densitometer (must be able to measure dot gain), light table
NOTE: All four density settings must be set up correctly before
running the Pulse Width Modulation file.
Steps:
1. Connect the system APIS cable to the PC Imager board in your PC.
2. Turn the system on and wait for it to complete its boot cycle.
3. Launch the PC Imager program from your PC.
Voltage Range
+5 Volts 4.9 to 5.2
+12 Volts 11.9 to 12.3
-12 Volts -11.9 to - 12.3
+24 Volts 23.0 to 25.0
-5.2 Volts -5.1 to -5.3
Section I: Imagesetter
Alignment 5-11