Factory menu
1. Press MUTE, TIMER, PICTURE buttons continuously in two seconds to enter
into factory menu.
2. Press P+, P- buttons to select the item to adjust.
3. Press VOL+
、
VOL- buttons to adjust the selected item or enter into the
submenu.
4. Press MENU button to return the super menu.
5. Under main menu mode, press MENU button to exit factory menu.
Factory menu settings please see the following: (* marked before the item
presents adjustable item, and the value in the bracket is default value)
AC power supply check and +B DC adjustment
1.
Check AC power supply is normal or not (120V, 60Hz and Sine Wave are normal)
2.
Receive Television broadcast signal, set PICTURE to standard mode
3.
Adjust RP950 so that voltages at two ends of C960 are +B, the voltage of
+B please see BOM
High voltage check and bulb voltage check
1. Make sure AC power supply and +B are within pointed range before
calibrating high voltage.
2. Connect high voltmeter to anode (G4) of CRT.
3. Turn on the receiver, set the BRIGHTNESS and CONTRAST to the minimum (zero
beam current).
4. High voltage must be measured below 27.5kV.
5. Bulb voltage must be measured within the range of 6.3
±
0.2Vrms by virtual
value meter
Picture IF setting
Receive any signal, enter into
VCJ VCO ADJ
VIF VCO AUTO ADJ menu
under factory mode, then press VOL+/- button, when
“
END
”
displays on the screen, that
means intermediate frequency has been adjusted to 45.75M in IC automatically.
RFAGC adjustment
1. Receive VH signal (Channel 7 or channel 10), apply 60dB
μ
V gray scale
signal
2. Enter VDJ ADJ
RF DELAY ADJ
and press VOL+/- button to adjust it until
picture noise is just disappeared
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