FSG/MTM/001 060511
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Adjustment Procedure:
Note: The voltage on TP7 is clamped to approximately 3.9 V. It may be necessary to turn
P2 several turns CCW to bring the voltage below the clamp voltage.
1. Make sure that the lamp is new. If not it must be replaced
2. Remove the front cover of the scanner
3. Switch on the scanner
4. Wait for the lamp to switch on for the second time (after approx. 30 seconds)
5. Turn P2 CW until LED3 switches ON and then slowly CCW until LED3 switches OFF *
6. Leave the scanner on for 1 minute
7. Turn P2 CW until LED3 switches ON and then slowly CCW until LED3 switches OFF *
8. Replace the front cover
9. Reset the lamp counter:
• Start SCANtest 6
• Select Test 1 (Scanner Information)
• Press the button “Reset Lamp Counter”
• Type the password “xetnoc” and press “Reset Lamp Counter”
10. Run Scanner Maintenance to ensure correct Basic- and Color Calibration
* On early LME boards the LED’s are missing. In this case connect a voltmeter between
TP7 and GND and adjust to –300mV. Note that the voltage will change slightly after
adjustment, but this is normal and does not call for continued re-adjustments.
3.4.3 Signal LEDs on the LME-Board
The two indicators, LED3 and LED4, which are found on newer versions of the LME-Board,
indicate the status of the stabilization circuit of the Lamp Driver. The two LEDs are
controlled by the feedback voltage on TP7 and both LEDs will be ON as long as the feedback
voltage is within the active range of the stabilization circuit. LED3 can however be OFF in a
period of time right after a new lamp has been installed (and the lamp driver adjusted).
If LED4 is OFF it indicates that the stabilization circuit is close to or outside the active range
and the lamp should be replaced.
3.4.4 Stepper Motor Reference Voltages
The stepper motor must be stopped for adjustment of the reference voltages.
Adjust P3 until the voltage on TP12 reads:
10 mV ± 10 mV
Adjust P4 until the voltage on TP13 reads:
10 mV ± 10 mV
3.4.5 Functional Test
SCANtest 6: Test 5, Lamp Test
Test 6, Motor Test
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