Panasonic PVQ-1312W, Service Manual

Page: 59 / 251

The picture is too dark or too light.
Test Point :
Pin 5 of P6001 (TV/VCR Main C.B.A.) or TP49 (CRT C.B.A.)
Adjustment :
SUB CONTRAST (EVR)
Specification :
3.0 V[p-p]±0.1 V[p-p]
INPUT :
Video Input Jack,
Crosshatch Pattern Signal 1 V[p-p]
(75 terminated)
Mode :
STOP
Equipment :
Oscilloscope,
NTSC Video Pattern Generator
1. Supply a Crosshatch Pattern Signal to the Video Input Jack.
2. Connect the Oscilloscope to Pin 5 of P6001 on the TV/VCR Main
C.B.A. or TP49 on the CRT C.B.A.
3. Select SUB BRIGHT in EVR adjustment mode. Then, after making
a note of the original value, adjust to the (D0).
4. Select SUB CONTRAST in EVR adjustment mode and adjust so
that the level A is 3.0 V[p-p]±0.1 V[p-p].
5. Select SUB BRIGHT in EVR adjustment mode and reset to the
original value.
Fig. E6
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