Panasonic PV-DF2700-K Service Manual page 140

Crosshatch Pattern Signal 1 V[p-p] (75
Mode :
STOP
Equipment :
Oscilloscope,
NTSC Video Pattern Generator
1. Set to PINP mode, and then set PARENT PICTURE to UHF/VHF TUNER/TV
DEMODULATOR 2 UNIT input.
("-T" is displayed on the screen.)
2. Supply a Crosshatch Pattern Signal to the Antenna Input Terminal.
3. Connect the Oscilloscope to TP48 on the CRT C.B.A.
4. Select SUB BRIGHT in EVR adjustment mode. Then, after making a note of the
original value, adjust to the (D0).
5. Select SUB CONTRAST in EVR adjustment mode and adjust so that the level A is
2.4 V[p-p]±0.1 V[p-p].
6. Select SUB BRIGHT in EVR adjustment mode and reset to the original value.
7. Set PARENT PICTURE to UHF/VHF TUNER/TV DEMODULATOR 1 UNIT input. ("-
R" is displayed on the screen.)
8. Select R-SUB BRIGHT in EVR adjustment mode. Then, after making a note of the
original value, adjust to the (D0).
9. Select R-SUB CONTRAST in EVR adjustment mode and adjust so that the level A
is 2.4 V[p-p]±0.1 V[p-p].
10. Select R-SUB BRIGHT in EVR adjustment mode and reset to the original value.
terminated)
Fig. E8
140