Quadro CTV-37D10 TXT, Руководство по обслуживанию

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Service Adjustments
-14-
3P51 ADJUST MENU
1.FACTORY MODE:
(1)Assembly line adjust mode: Press S.M.,
(DISPLAY) and
keys in turn to enter
this mode.
(2)Engineer adjust mode: Press CLOCK, P.M. and keys in turn to enter this mode. This
mode is usually for R&D and engineering department use.
(3)Press digital keys to enter every adjust page, use PROG+/- keys to pick adjust items, use
VOL+/- keys to adjust the value.
(4)Press DISPLAY to quit factory mode.
2.B+ VOLTAGE ADJUST
Measure C600A + voltage, adjust VR641 to get proper B+ voltage according to CRT
assembly list requirement.
3. RF AGC VOLTAGE ADJUST
(1)Receive 294.25MHz,60dBcolor bar signal.
(2)Enter factory mode and press digital key “4”.
(3)Measure tuner AGC point voltage, adjust AGC item till the voltage is 2.4V,or till picture
noise just disappears
。
Usually the AGC value is fixed to 27.
4
、
FINE ADJUST
：
(1) FOCUS ADJUST
a. Receive cross-hatch pattern signal
。
b. Set picture to
“
RICH” mode
。
c. Adjust FBT’s FOCUS knob till picture is clear
。
(2) SCREEN VOLTAGE ADJUST(KEY 0 )
：
a. Set picture to
“
STANDARD
”
mode
，
without signal input;
b. Enter factory mode and press digital key”0”
c. Adjust FBT’s SCREEN knob till VG2 voltage flag changes between “LOW” and
“HIGH”
，
press PROG+ key to enter other menu
。
(3) HORIZON ADJUST(KEY 1 ):
a. Receive 50HZ monoscope PATTERN. Set TV to standard mode. Press KEY1 to enter
factory mode
b. Adjust 5HSH(for 60Hz picture,its is 6HSH)to set picture horizontal center to CRT
horizontal center.
c. Receive 60HZ monoscope PATTERN, repeat above b item