Gamma Adjustment - Sanyo PLC-400P Service Manual

G-DC ADJUSTMENT
EQUiPMENT"-
CONNECTiONS
)NPUTStGNAL
Osciftoscope
-TP48G and ground
16 Step Gray Sca)e video
signa) (NTSC)
ADJUSTMENT: 1. By using VR4021 adjust A to bo
8.7±0.1Vp-p.
GND
RVtDEO ADJUSTMENT-1
EQUfPMENT---
CONNECT)ONS-
)NPUT S)GNAL
Osci!)oscope
- TP48Ft and ground
16 Step Gray Sca)e video
signaf (NTSC)
GAMMA ADJUSTMENT
ADJUSTMENT: 1. By using VR4001 adjust A to be
8.7±0.1Vp-p.
2. By using VR4062 adjust B to be
2.5 ± 0.1V p-p.
EQUtPMENT---
CONNECTtONS-
'NPUTSiGNAL
Osd[)oscope
-TP48G and ground
16 Step Gray Scate video
signa) (NTSC)
ADJUSTMENT: 1. By using VR4063 adjust A to be
2.5 ± 0.1V p-p.
GND
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