Sharp SF-2040 - Processing Unit; Adjustment of Blank Lamp Position; Adjustment of High-Voltage Output Balance; Applying the Special Measuring Tool

2. Processing Unit
(1) Adjustment of Blank Lamp Position
1 Check that the center deviation is 2.0mm or less. (If the center
deviation is more than 2.0 mm, correct it).
2 Set an A3(11x17)-size blank original on the original table, and
with the original cover opened, make a reduced (x 0.64) copy
using an A3 (11 x 17) paper.
3 Measure the width of solid areas. If the width is more than 1
mm, adjust the blank lamp unit position so that the width of the
solid areas is 1 mm or less.
1 notch of the adjusting cam : lamp movement 0.5 mm
Half notch of the adjusting cam : lamp movement 0.25 mm
(2) Adjustment of High-Voltage Output Balance
A. Applying the Special Measuring Tool
Digital multimeter (or ampere meter)
Note: use a multimeter with measuring range of 0 to 100 µA and
error of ±1% or less.
A
B
IA-BI 1mm
Backward
The blank lamp unit
moves forward
The blank lamp unit
moves backward
Forward
UKOG-0110FCZZ
UK0G-0110FCZZ
A
(QCLIZ0005FCZZ)
(QCLIZ0006FCZZ)
(QCLIZ0010FCZZ)
(QCLIZ0004FCZZ)
(QCLIZ0002FCZZ)
(QSW-M0118FCZZ)
PHOG-0007FCZZ
QTIPH0017FCZZ
(VRN-RT2EK304F)
300K Ω X 2
Electrode sheet (UKOG-0110FCZZ)
Electrode sheet harness (DHAI-0304FCZZ)
Microswitch
orange
blue
green
black
yellow
red
(Circuit diagram of A-portion)
blue
black
red
orange
white
white
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