L) Voltage Adjustment - Epson PhotoPC 850Z Service Manual

EPSON PhotoPC 850Z
5.2.2.5 12.4V (L) Voltage Adjustment

Measuring Point: CL534

Measuring Equipment: Digital Voltmeter

ADJ. Location: VR504

ADJ. Value: 12.40 ± 0.05V

Adjusting Method: Adjust with VR504 to 12.40 ± 0.05V.
5.2.2.6 7.7V (L) Voltage Adjustment

Measuring Point: CL563

Measuring Equipment: Digital Voltmeter

ADJ. Location: VR505

ADJ. Value: 7.70 ± 0.05V

Adjusting Method:
1. Use CL554 to check that the pulse width of the inverter clock is
approximately 8.8 msec.
2. Note that the inverter clock will be at "L" for 1 second after backlight
illumination starts.
3. Adjust with VR505 to 7.70 ± 0.05V.
Adjustment Adjustment
Revision A
94