Adjustments; Brightness And Contrast Adjustment - Sony UP-860 Service Manual

UP-860/870ME
SECTION 3
ADJUSTMENTS
Measuring Equipment Required
1. Oscilloscope
2. Frequency counter
3. Color-bar pattern generator (1410 and 1411 signal generator)
4. Digital multimeter
'Turn on the POWER switch
while pressing the
and
Switching regulator
buttons at the same
time.
Note:
Do not release the switch until
the buzzer sounds.
wee ew ee eee
'For printing-out, press the
button.
'Set DIP switches 2 through 8
to ON (lower position), and set
DIP switch 1 to OFF.
'Use the UPP-110HD paper.
'Set the GAMMA slide switch
to the center position (II).
gradation signal smooth as shown in Fig. 1.
3-2. BRIGHTNESS CONTRAST ADJUSTMENT
TP4
4°
® Rv1
RV2
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